Method of software control of duration of spark discharges of capacitor ignition

FIELD: electricity.

SUBSTANCE: method consists in software setting and subsequent execution of duration (indirectly of energy as well) of each separate spark discharge in any range of ICE rpm using a controller ROM of which is loaded with programs with constants of programming of functional dependence of this duration from the combination and intensity of the operating modes of ICE involved in its control and selected from its rpm, load, threshold temperature of cooling liquid, depth of leaning (quality) of fuel and air mix taking into account the brand of motor fuel. During ICE operation the controller processor selects according to technical information of sensors of selected modes in the ROM working program the constant of programming of optimum duration of forthcoming spark discharge with the subsequent execution of this parameter in each ICE cylinder. With the guaranteed rate of repetition of spark discharges limited only by technical capability of its practical use by the specific type of ICE and with indirectly adjustable energy considerably exceeding limiting capabilities of dominating systems with the normalized time of its accumulation in magnetic field of the ignition coil.

EFFECT: improvement of efficiency of ICE operation for the successful solution of the essential and predicted tasks of their modernization connected with improvement of environmental safety, thermal efficiency and specific dimensional power.

6 cl, 8 dwg

 

The invention relates to systems of electric spark ignition and are specifically aimed at further improvement variants of these systems previously disclosed in the application for the invention "Method of modernization condenser ignition with continuous accumulation of energy", according to application materials which is issued by the RF patent for the invention with registration number 2364745 (publ. On 20 August 2009, Bulletin No. 23). This variant of the upgraded ignition condenser (hereinafter ISS, source, L1) is the prototype of the proposed Method software controlling the duration of the spark discharge ignition condenser" ("Method"). The pooling of unused technical reserves of the prototype with its known in the prior art the essential features is the physical basis for a "Method", developed with the aim of expanding Arsenal of technical means of condenser ignition on software to regulate the duration of each individual spark discharge, optimally corresponding to the combination and intensity involved (i.e. accounted for) in the regulation of engine operation. Hereinafter the combination of the involved modes are implied their various combinations: the number of revolutions, load, threshold coolant temperature, the depth of the depletion FA ispolzuemaya motor fuel, choose based on the planned efficiency of internal combustion engines, and programmatically set the duration of each individual spark discharge is used to provide a complete generation of identical spark discharges in all cylinders of the internal combustion engine, capable of providing a reliable ignition of the fuel charge and its efficient operation at full and partial loads, including a wide range of change of the depth of the depletion of the fuel Assembly, which is the main reserve to reduce emissions and improve thermal efficiency. For example, currently operated cars using TV-mixture with a quality factor of 1.5 (Japan), providing a realistic fuel savings of up to 20% stringent standards of environmental safety ("Electrical, electronic and autotrance equipment passenger cars auto. Sosnin, D. A., ed. Solon-Press, Moscow, 2010, p. 188, para.2; next, L2). Also included in the source graph (Fig.20.2, p. 183, L2) implies that the depletion of the fuel Assembly is reduced substantially (by some estimates up to hundredths of a percent) content of carbon monoxide in the exhaust gases, which is quite natural for combustion with excess oxygen, but at the same time increases the emission of unburned hydrocarbons CH because of the misfires. Moreover, already at the required quality factor of the fuel Assembly 1, (and in the future more than 1.7; p. 188, para.2; also p. 186, n. 4, L2) such a deep enough lean fuel mixture in a classic internal combustion engine ceases to fire. To avoid this, serious obstacles to their improvement necessary (along with the special preparation of fuel charges) spark discharges increased duration with energies significantly above its optimal level, for ignition and normal or slightly depleted fuel assemblies. The duration (and indirectly, and energy) spark discharges are also to some extent depends on the brand of motor fuel (ignition energy of its fuel assemblies), load, temperature, number of revolutions of the internal combustion engine. As a result of the unregulated value of this parameter is redundant for light modes, may be totally inadequate for their intensive options (especially when combined), leading to undesirable misfires that logically demonstrates the need to guarantee the optimum duration (and consequently energy) spark discharges in a wide range of real loads of sparks and the regulation of this duration in direct functional dependence on the intensity of engine operating modes, are involved in its regulation. The essence of the proposed "Method" is to implement this program�lot of regulation of the duration (and indirectly, and energy) each current spark discharge using a microprocessor (MP) control. Such sparking, out of reach of all known in the prior art systems of this assignment, can significantly extend the functionality of the Arsenal of technical means ignition condenser not only on increasing the efficiency of operation of the running engine, but the successful solution of immediate and anticipated challenges with their modernization, especially when it is combined with MP integrated management systems automotive engine (ESAU-VAZ", "MIKASA", etc.).

However, the technical resources to implement the "Way" is very limited. For example, all of the dominant species of the ignition system with normalized time, energy sparking in the magnetic field of the ignition coil (hereinafter, a transistor system) duration spark discharges with energy up to 100 MJ (p. 107, para.1, L2) given to the secondary circuit high voltage (p. 107, para.1, L2), depends only on modest quantities virtually uncontrollable its EMF of self-induction (for a possible limitation of this EMF is illogical) that makes it practically impossible for the regulation of this duration. Moreover, when the declared nominal value of up to 2.5 milliseconds with the inductive component of the discharge current is 0.1 A, the current in an electric circuit consisting of active resistance vtori�Noah winding of the ignition coil (for example, microprocessor 29.3705 - from 11 kW to 12.5 kW; L2, p. 108, PL.11.1) and the resistor limits the interference of high-frequency capacitive component of the current (from 4 Ohm to 10 kOhm; p. 85, para.8, L2), each spark discharge should be allocated in the form of heat loss energy from 375 to 560 MJ MJ, and without taking into account energy, additionally expended in the spark gap of the spark plug, is significantly greater than the limit value (100 MJ), which can give the secondary circuit of the ignition coil of the system (for example, the same 29.3705 at maximum current gap 10 A). This indicates the discrepancy of the declared parameters achievable, which actually should have significantly lower current and duration, which makes even more problematic the use of this system in the decision of actual problems of modernization of the internal combustion engine, coupled with the need to maintain very high shunt resistance leakage of high voltage tract, reducing the magnitude of which is lower than 5.0 MW has a negative impact on all the parameters of the spark discharges ("Electronic ignition system" ed. Khodasevich, A. G., and others, ed. INTELCOM, Moscow, 2001; p. 25, Fig.3.2, Fig.3.3; next L3). Similar conclusion is valid for sparking classic condenser systems due to the fact that the parameters of duration (and energy) of their sparks�o discharges deteriorate significantly with increasing number of revolutions of the internal combustion engine and also UN software regulation, except devoid of these shortcomings upgraded condenser ignition system (ISS, L1). It was developed on the basis of the classical system with the continuous accumulation of energy spark discharges by additional inclusion in its electric circuit (figure 1, L1) of the storage capacitor 9 is charged by the output voltage of the inverter DC voltage (PPN) with bridge rectifier 8 and electronic (transistor) key 32 controlled by pulse signals (figure 2, L1) of the secondary winding of the current transformer 30 is operating in the mode of differentiation of the current of the primary winding of the ignition coil 29, and a similar current transformer 31, outstanding pulse signals used to turn on the thyristor key 26. These changes allowed use in the wiring diagram of this system PPN with independent external excitation to provide the stable voltage level of the charge accumulating capacitor 9 (running a local tracking system, item 11, figure 1, L1) and change the principle of formation of the current spark discharge through energy, bit (cumulative) of the capacitor 18 (from accumulating 9) taken to generate each period of the discharge current (and renewable power in the moments of the end of each of them) and so obrazonvaniya, the voltage of the charge on the source (primary) level during the whole process of sparking. This, in turn, helped to generate spark discharges with a stable amplitude of the discharge current excess duration (which it became necessary to limit the function of the engine rpm), and generate another spark discharge directly to the trailing edge of the preceding and to provide a possible frequency, limited only by the possibility of its practical use to a specific type of engine. The principle of formation and duration of current (limited at 0.1 A its effective value by analogy with the peak transistor current system) spark discharges such sparking is used, in one embodiment, the implementation of "Method" (figure 1 graphic materials).

However, these acquired qualities that are inaccessible to classical analogues ISS, not fully used to increase the efficiency of its sparking. As a consequence, in particular, change of fixed duration spark discharges as a function of engine rpm (figure 3, figure 2, L1) is set equally for all possible combinations of modes of operation without regard to their significant individual or joint influence on the optimal value of this parameter, especially in the intensive exercise regimes. While in ISS reasonably enough this long�alnost can be hardware (ie. the nominal values of the individual elements of the electrical circuit: El.24, 25; figure 1, L1) is set only at the beginning and end of the speed range of the internal combustion engine, and in remaining (main) part of this range depends on the selected leveling characteristics (straight, curves of the second order, etc.; the characteristic "f" of figure 2; figure 3, L1), and can be just random coincidences with the necessary. At the same time actually more extensive and more precise control of this parameter, with each individual spark discharge and throughout the entire speed range of the internal combustion engine, when a microprocessor (MP) management software that sets its current value, for example, by a rigid algorithm of three-dimensional characteristics of the matrix type (similar to Fig.9.6, p. 82, L2) with the functional dependence of the duration of spark discharge not only from the number of revolutions of the internal combustion engine, but also, for example, from a combination of: the number of revolutions with the quality of the fuel Assembly, the number of revolutions with load (figures 2 and 3 alternative programs, respectively), the magnitude of the load with a quality FA or another, including a simpler dependence on one of the modes given threshold temperature of the internal combustion engine and the brand of the motor fuel. With this regulation, for example, for a specific number of revolutions at different load levels (or quality FA) will be programmatically ass�and practically implemented various duration spark discharges, nominally corresponding to the total (joint) the intensity of the current values of these modes. In "the Way" even in a more simple relationship duration spark discharges from one mode (e.g. speed), unlike the prototype, the possible objective assessment and program setting the duration of each individual spark discharge in the entire speed range of the internal combustion engine taking into account the threshold coolant temperature and engine fuel.

For the implementation of such regulation in the proposed "Method" used the distinctive features of the prototype: the maintenance (fixed) voltage level of the charge accumulating capacitor; replenish energy and maintaining the source voltage of the discharge capacitor and proportional to the corresponding high voltage spark discharges during the process of sparking; maintenance duration spark discharges until it is forced restrictions, as well as technical means of ensuring these processes: a DC / DC Converter (PPN); accumulating and discharge capacitors, thyristor and transistor switches controlled by pulse signals of the current transformers. Distinctive features of the "Method" are: software regulating the duration of each Department�tion spark discharge provided by the use of the controller, the ROM which programs are used with constants programming this duration with regard to its functional dependence on the intensity involved in the regulation of engine operation, in real time defined by technical information sensors these modes. By converted (digitized) to the value of the information of the sensors, the processor of the controller selects the program of your ROM constant programming the duration of the upcoming spark discharge for subsequent monitoring of identical spark discharges with a duration of all cylinders of the internal combustion engine (timing signals U1, U2 of the external system of ignition timing advance angle). Special cases of the software controlling the duration spark discharges in "the Way" are the above-mentioned combinations accounted for (used) engine operating modes selected based on the conditions of the planned efficiency (with the threshold coolant temperature), and the duration of each spark discharge takes the opportunity programmatically set its optimal value in direct functional dependence on the intensity of the affect this parameter is involved in the regulation of the current modes of operation D�With, selected from it: load, speed, threshold coolant temperature, and the depth of the depletion of the fuel Assembly used brands of motor fuel, in the designed programmes developed in two versions - for "cold" coolant temperature to 65 degrees Celsius and warmed up the engine, while metered dose corresponding to real needs, using the duration (and therefore energy) spark discharges, eliminating unnecessary overload of the high voltage path and the ignition system provided high-quality training programs. To ensure this quality in the "Way" of significant practical importance is the possibility of checking and adjusting the constants programming duration spark discharges in programmes developed in the process of bench testing with the planned load of the internal combustion engine, which can address the shortcomings of programming and virtually eliminate the misfire of fuel charges fuel assemblies caused sparking and thus greatly facilitate the work of the ecological systems of the vehicle. In "the Way" is preferable to set the program duration spark discharges by the number of periods of the primary current of the ignition coil with a stable frequency and duration, and as a result simply, without reference RA�tions largest millisecond time intervals, to monitor the actual performance of given duration of each spark discharge by the number of periods its primary (and, respectively, and discharge) current, the coincidence of the realized number of which is specified programmatically force to stop the continuation of this category (details below). However, the duration of the spark discharges in the "Way" can programmatically be set in milliseconds and with the introduction of the timer circuit controller node. However, the actual duration of the spark discharges, are always composed of integer number of complete periods of the primary current of the ignition coil, will be determined by their total duration and may therefore differ from exceeding specified programmatically (not accurately calculated) by a maximum of one period of this current. Also in the "Method" can be used a model for a self PPN with self-excitation, however, this is accompanied by the absence of stabilizing the high voltage (and current) spark discharges, leading to high consumption of energy from the electrical system and to the deterioration of all parameters of the process of sparking, including its efficiency.

On the block diagram of figure 4 shows one of the variants of implementation of the "Way" to ensure the operation of a four-cylinder engine. It consists of the ignition unit 1 (f�Gura 5), consisting of two identical channels of sparking (identical to the single-channel version of the ISS), the load of which are double outlet coils 2/1, 2/2 with the spark plugs 3 and block program management controller (BPC) 4 (figure 6). In the process of sparking the ignition module triggers the PCU feedback signal "u" is actually implemented, an odd number of half-cycles (formally corresponding to the number of full periods) of the primary current of the current spark discharge and takes from that block control signal And providing the execution of the program the duration of this discharge, and also receives from the external system of ignition timing advance angle 5 control signals U1 and U2, alternately including the work of its channels. Controller (BPC) 4 provides software control spark with the use of technical information sensors of engine operating modes 6 and own programs according to the current value of the duration of the spark discharges from the intensity of these modes. For particular cases of practical implementation of the "Method" required only those sensors whose information is being used (pressed) in regulation. For power supply units used stable source 7 voltage +5 volts, eliminating errors in their work when and when and�arinam the increased tension of the spring 8 on-Board power +12 volts. Synchronisation of units ignition and programmatically control the engine operation is performed on the control signals, a source of reference BUT that are issued by a sensor, Rev D1, and the signals U1, U2 of the external system the CPP. The work is a "Method" is the following the interaction of the ignition module, controller, and internal combustion engines. When applying voltage to the ignition module (PPN) provides fixed (stable value), the voltage necessary for the operation of channels, and supports him in the process sparking (when forming a high voltage and duration spark discharges). Further, during start-up and operation of the internal combustion engine by a signal source of reference BUT (BUT converted to 1, see below) speed sensor D1, the controller 4 determines the current values involved in the regulation of engine operation for technical information their sensors 6 and on the basis of this information, selects in the program of your ROM (for example, in figure 2, in the alternative of figure 3 or the like) corresponding to the intensity of these modes constant programming the duration of the upcoming spark discharge, which is used (propagated) to implement identical spark discharges in each of the four cylinders of the internal combustion engine, and outputs to the ignition unit 1 control�, most of the signal And, providing maintenance of this duration for program a given level and generated according to the feedback signals "B" coming from the ignition module in the generation process of each spark discharge, the start of each of which signals U1, U2 external system POPS-synchronized with the operation of the ignition unit, PCU and the engine. The rear edges of these signals (corresponding to the beginning of spark discharge) in real time appear towards the signal source of reference BUT (NO) with a certain delay that depends on the calculated value of the ignition timing system of the ISP.

The IGNITION UNIT (figure 5).

The ignition module is designed to generate spark discharges and fundamentally different from those of the prototype diagram only way software (microprocessor) control the duration of each one. It consists of two identical channels sparking with static high voltage distribution for the four cylinders of the internal combustion engine using twin ignition coils 2/1, 2/2 and a common double-circuit PPN with independent (external) excitation. The master oscillator of this excitation is performed on enabled by the loop scheme standby multivibrators 9/1 and 9/2 (in this embodiment - KAH) issuing mutually offset by 180 electrical degrees C�Nala control power circuit excitation (consisting of bipolar transistors 10/1, 10/2 and transformer 11) when applied to their reset inputs R1, R2 control signal is logic high at output "G" local servo system 12 to the comparator CSA with potentiometric divider 13, which establishes the value of the reference voltage at its input "B" (details below). Power circuit PPN consists of bipolar transistors 14/1, 14/2 and the transformer 15. Its the same value of output voltage (rectified in bridge rectifier 16/1 and 16/2) provide the charge accumulating (electrolytic) capacitors 17/1, 17/2 channels. Voltage these charges are served on the resistor voltage divider 18, the output of which their large-scale equivalent to the input "A" of the comparator 12, which compares in the process of maintaining a fixed high voltage spark discharges with the equivalent of this high voltage applied to its input "B" of the reference signal with potentiometric voltage divider 13 (also fixed and equal to quotient from dividing the level of high voltage spark discharges on the transformation ratio of the ignition coil and the scale factor of the voltage divider 18). When equality of scale equivalent voltage of the charge accumulating capacitor with equivalent high voltage iscrewy� discharges, provide pulse relay (key) the inclusion of a PIP control signal from the output G of the comparator, changing the logical level of the control signal from high to low, from disruptive PPN. The loss of this equality, greater than the hysteresis (deadband) of the regulatory system as a result of leaks in the power circuits of the accumulating capacitors or the selection of energy to produce sparks, the process of restoring the equality of these equivalents and a fixed voltage level of the charge accumulating capacitor and the corresponding high voltage spark discharges is repeated. The essence used in this embodiment, the implementation of the "Way" maintain a predetermined fixed voltage of the charge accumulating capacitors is that the output (rectified) voltage PPN exceeds the level of this voltage and the relay (key) enable PPN is an increase of the charging voltage of the capacitors to the level determined by potentiometric divider 13 (without adjustment with a higher output voltage PPN). Error maintain a fixed level of this voltage depends on the resolution of local servo system 12, and the speed - power onboard PPN.

The process of General� spark discharges in the "Method" similar to the principle of single-sparking prototype. When voltage is applied on-Board meals included in the work PPN (control signal of high logic level from the output G of the comparator 12), providing the charge accumulating capacitors 17/1, 17/2 to the level of their fixed voltage (corresponding to the set at the input "B" of the reference voltage of the comparator, in turn, is proportional to the desired high voltage level, see above). When this bit capacitors 19/1 and 19/2 in standby (pre) charge mode (with a time constant of about 0.1 seconds) from accumulating 17/1, 17/2 through resistors, constantly shunting the collector and emitter of the conclusions of the transistor switches (hereinafter STC) 20/1 and 20/2 (without contact of the starting relay used in the circuit of the prototype), and in the process sparking the opening of these keys. In this process, to the control electrodes of the thyristor keys (hereafter TCS) 21/1 and 21/2 served alternately pulse signals generated from a pulse-potential U1 and U2, coming from an external system controlling the advance angle of ignition advance angle (figure 4), initiating the beginning of each generation of spark discharge, i.e. the first period of the primary current of the ignition coil, and further enabling thyristor TCS and transistor STK keys and the formation of the remaining periods of this current is regulated by oscillatory PR�process also providing and filling source of energy of these fluctuations in discharge capacitors 19/1 and 19/2 (from accumulating 17/1 and 17/2). For example, in the first channel of sparking when the signal U1 logic high system POPS open the transistor 22/1, creating a circuit of the current flow through the inductance 23/1 from the source 7 stabilized voltage of +5 volts. When changing the level of the signal U1 from high to low (meaning the beginning of spark discharge) closes the transistor 22/1. As a result, EMF inductance 23/1, summed with a voltage of +5 volt power source 7, is in the form of a short pulse through a capacitor to the control electrode of the thyristor key TKS 21/1, as a result of opening in which the resonant circuit formed by the capacitance of the discharge capacitor 19/1 and inductance of the primary winding of the ignition coil 2/1, there are harmonic oscillations of the first period of the primary current of the coil on the circuit: discharge the capacitor 19/1, anode TKS 21/1, the body, the primary winding of the ignition coil 2/1, the primary winding of current transformers 25/1, 24/1 and discharge the capacitor 19/1 (with the parallel shunting TKS 21/1 diode 26/1 during recharge in this oscillatory process of the capacitor 19/1 source polarity). As well as that of the prototype, in this chain� included primary current transformers ITL 24/1 and ATT 25/1, outstanding on its secondary windings of the pulse signals formed by differentiating each half period of this primary current (figure 7). In this case, the pulses of ITL 24/1 negative polarity, corresponding in real time to recharge the discharge capacitor 19/1 in polarity, reverse the original (i.e. with the negative potential on the anode of the thyristor key TKS 21/1) and coincident with the transition of the primary current through its zero value (moments t1, t3, t5 and others; figure 7), not used (are bridged by a diode), and the pulses corresponding to the overcharging of the capacitor in the original polarity (times t2, t4. t6 and others) and coinciding with the end of the first and the following other periods of the primary current, and - with a zero value, is applied to the base-emitter p-n-transition transistor switch STK 20/1, which opens for a short duration of each pulse, creating a circuit increasing the voltage of the discharge capacitor 19/1 to the voltage level of the storage 17/1. As a result, the opening in the discharge capacitor is compensated for the amount of energy they spent on the generation of the first period of the current spark discharge (and similarly for all subsequent periods). In this case, the current transformer ITL 25/1 (unlike the prototype, the element 31, figure 1, L1), is made with two windings with at�closed on the body of their common point, so you can use it the odd pulse signals of negative polarity (t1, t3, t5 and others, figure 7), corresponding to the end of the first and all subsequent odd-numbered half-cycles of the primary current of the ignition coil, to control the actual duration of each current spark discharge (programmable in PCU the number of periods of the primary current in this embodiment, the implementation of "Method", see above, more below) on these pulse feedback signals "B" are alternately supplied to the working channels of sparking in the MCR (figure 6). And its pulses of positive polarity (t2, t4, t6, and others, figure 7), corresponding to the oscillatory process in the end of the overcharging bit capacitor 19/1 with the original polarity of the charging voltage and coinciding with the end of the first and all subsequent periods of the primary current, serves to the control electrode of the thyristor key TKS 21/1, the opening of which initiates the generation of the next (second and subsequent) period of the primary current and the further continuation of the spark discharge before issuing a control circuit (protection) it programmatically set duration from the MCR signal logic high "And", which is formed in the reversible binary counter 37 (figure 8, detail later) in the software coincidence given number of periods and FAK�automatically realized an odd number of half-cycles of the primary current of the current spark discharge (determined by feedback signals "In"). It opens for half a period before the end of the spark discharge common to both channels of the bipolar transistor 26, and bottom of the housing chain re-enable the oscillatory process (even-numbered pulses of ITL 25/1) thyristor key TKS 21/1, this circuit preventing the possibility open it again and generate another (unnecessary program PCU) period of the primary current (with parallel effects on the same chain is broken at this time, the second channel). As a result of the oscillatory process (the transformation of high voltage) in the working channel ends with the overcharging bit capacitor 19/1 in the original polarity of the charging voltage and to the completion of his energy taken to generate the final period ended current spark discharge) by including a transistor switch STK 20/1 last (even) impulse current transformer ITL 24/1 obtained by dierentiating the last period of the primary current of the ignition coil. Similar replenish energy discharge capacitor means the readiness of the working channel to the next generation of spark discharge directly on the falling edge ended, that is, to offer "the Way" (in contrast to the transistor and capacitor analogues ISS) no period of accumulation of energy spark gap�Dov in time intervals between them (including for single channel and sparking with dynamic high voltage distribution in the cylinders of the internal combustion engine). This energy is replenished and maintained at the original level of the charging voltage of the discharge capacitor at the end of each period of the primary current of the ignition coils throughout the process of sparking, which ensures the independence level of a high voltage spark discharges from the repetition frequency and duration (when using PIP is sufficient capacity). This, in turn software allows you to set the duration of each spark discharges with a frequency (with a duty cycle of up to 1.0) in all ranges of the necessary practical use of these parameters for operating the internal combustion engine and to ensure a reliable spark when developing their high-speed (including rotary vane and rotary piston) modifications.

The second channel of sparking works similarly when receiving the control signal U2 from the system advance angle (figure 4) initiating the generation of another identical (duplicated, see below) working spark discharge in the next cylinder of the internal combustion engine in order to include them in the work, and so on until the end of the cycle of four identical spark discharges, followed by the determination unit PCU programmatically set duration of the next spark discharge for the next similar cycle of sparks.

The PROGRAM MANAGEMENT UNIT PSU� (figure 6).

MCR-controller is used to programmatically control the duration of the spark discharges. It consists of input ports 30 technical information input sensors of engine operating modes and the feedback signal "B" of the ignition module and the output port 31 of the control signal "And"; device I / o ewu 32, CPU 33, and a read only memory ROM 34 (with the General structural scheme, similar to that shown in figure 9.5, page 81, for L2 MP system POPS).

At ports of entry 30 converts the information of the sensors operating modes of the internal combustion engine into electrical signals suitable for operation of the controller with the formation of the slope of their fronts and logic levels (normalization). In this embodiment, the implementation of the "Method" used software job (see above) duration spark discharges, a multiple of the number of periods of the primary current (0.25 msec each, figure 1) ignition coil, and control its execution by the equivalent number of completed odd half-cycles of the primary current of the ignition coils alternately recorded in MCR on feedback signals "In" transformers ITL 25/1 and ATT 25/2 (figures 5, 7; more below).

The input signals of the input ports 30 are technical information:

"B" - the number of finished odd half-cycles of the primary current of the coil for�of iganie working channel of the ignition unit;

D1 - source reference point BUT issued by the rpm sensor and the corresponding real-time the position of the upper dead point of the compression stroke of the first cylinder four-cylinder engine;

D2 - about the current value of the number of revolutions of the internal combustion engine;

D3 is about the qualitative composition (depth of poverty) FA, we present a wideband oxygen sensor (type LAF-Sensor);

D4 - about the level of load of the internal combustion engine, as defined by the vacuum in the intake manifold;

D5 - on threshold value of the coolant temperature of the internal combustion engine (with the trigger level of the sensor 65 degrees Celsius by analogy with the system of the CPP).

Of course, the specific design of each particular case of implementation of the "Way" is necessary to use only those sensors whose information is used in program management.

Ewu controller generates a pulse from the source point BUT leading at half of the period of revolution of the crankshaft of the internal combustion engine normalized signal NO (similar to ewu CMW system POPS) that are necessary for coordinated operation of the processor with the operation of the internal combustion engine; the command processor "Start ADC performs the conversion of electrical and acceptor (non-electric) values of the sensors involved in the regulation of engine operation in digital codes, which installs in program�e external ROM address constants programming the duration of the upcoming spark discharge provides temporary storage of its value (in the counter-register 36, figure 8), which generates the control signal And for execution by the ignition unit is programmatically set duration of plaintiff's discharge and controls this execution by feedback signals "B" from the ignition module using in this embodiment, the implementation of the "Way" local tracking system (ewu) for reversible binary counters CIE 36, 37 (figure 8, more below).

The processor of the controller with the arrival of each signal NA performs at the address a10 select the ROM work programme (subject to a threshold coolant temperature) and start the cycle of determining the constants of programming the duration of the upcoming spark discharge when using the technical information of the sensors involved in the regulation of engine operation, convertible to ewu to a digital code by the processor commands "Start ADC", and the selected CPU operating program ROM, which is made in the form of constants programming dependence of the duration of the spark discharges from the digitized current values involved in the regulation of (possible) engine operating modes, recorded in the form of rigid algorithm of matrix three-dimensional characteristics, similar in principle of construction of zobrazen�th in the diagram of figure 9.6 page 82 source L2 for MP system ignition timing. The information in these programs is included in two versions - for cold (coolant temperature up to 65 degree Celsius by analogy with the system POPS) and warmed up the engine. The choice of the working version of the programs is done by the threshold temperature signal D5 supplied to the low-order address A11 ROM (figure 6).

In the diagram of figure 2 shows a variant of construction of three-dimensional matrix characteristics duration spark discharges as a function of speed and quality of the fuel Assembly, and in the diagram of figure 3 - the same characteristics of the functional dependence of the duration of the spark discharges from the number of revolutions and load of the internal combustion engine for two from the number of possible instantiations implement the "Way". The desired value of the constant programming of the duration of the upcoming spark discharge is determined by the processor in the diagram of figure 2 at the intersection of columns and rows, represented respectively Jr. (from A0 to A4) and senior (from A5 to A9) bits of ROM addresses generated in ewu by digitized current values of speed and quality of the fuel Assembly (figure 6). Similarly, the constant programming in alternative work program according to the duration of the upcoming spark discharge from the number of revolutions and load of the internal combustion engine (figure figure 3). For implementation of the adopted option a "Method" defined�tion programmatically set duration of the next spark discharge occurs for a full cycle sparking in the four cylinders of the internal combustion engine (i.e., for four identical spark discharges), but can be extended to several cycles corresponding dividing the number of signals NO.

In connection with the solution of a particular problem of obtaining the required efficiency of internal combustion engines the combination of modes involved in the regulation of the duration of the spark discharges, may be different, for example, the load and the quality of the fuel Assembly or the use of more simple based on one of the modes (with the same build alternative programs). However, of all modes of engine operation, the duration (and therefore energy) of the spark discharges to the greatest extent depends on the speed - maximum required during cold start at low ambient temperatures with a consequent reduction in the duration at idle and with revs, as the preservation of its constant value in the whole range of revolutions leads to a directly proportional (and unjustified) growth in energy consumption from the electrical system. Therefore, the use of this mode in the variants of their combination is the most preferred. Matrix diagrams (figure 2, figure 3) presented conditionally, as their construction requires individual process calculation of constants of programming for a specific type of internal combustion engine followed by a practical test them dost�allegiance during bench testing under load using all of the provided (used) in the program modes. The dependence of the duration of the spark discharges from the motor fuel must be taken into account in each developed program. This dependence is implemented in modern integrated engine control systems (for example, in ESAU-VAZ" to control the ignition timing) hardware selection in the ROM (i.e. switching without processor) relevant programmes that take account of this dependence, including simple replacement ROM chips into a special socket connector when changing a motor fuel. This method also is most suitable for a "Method".

THE FUNCTIONING OF A "METHOD".

When the supply voltage VPI of the ignition module provides the potentiometer 13 (figure 5) fixed to the voltage level of the charge accumulating 17/1, 17/2 and bit 19/1, 19/2 capacitors During start-up and operation of the internal combustion engine in turn are incorporated in the channels of sparking of the ignition module (on the signals U1, U2 of the external system the CPP, see above). With the advent of each reference signal NO processor 33 to the address a10 selects the ROM work program functional dependence of the duration of the spark discharges from involved in the regulation of engine operation and generates a command "Start ADC"; in ewu begins the transformation of information from sensors speed D2 and a quality FA D3 into digital codes (for this particular case the combination of modes, figure 2). Based on the obtained codes ewu sets the network address of the ROM in Junior - from A0 to A4 and senior - from A5 to A9 discharges with access to the necessary information in this program (figure 2) and produces a signal "End of conversion", in which the processor chooses her to be the constant programming of the duration of the upcoming spark discharge, expressed by the number of periods of the primary current of the ignition coil, which in binary code programmatically configured number of these periods (for this particular case the implementation of the "Way") downloaded their inputs "D" pre-installation in the counter - register 36 ewu to a reversible binary counter (CIE, figure 8). When a signal of high logical level U1 (or U2) external system the CPP prior to the commencement of each spark discharge information this counter-register 36 is written (also by the inputs preinstall "D") in the same binary down counter 37. At the input of the subtraction in the generation process started (on the falling edge of the signals U1 or U2) spark discharge comes from the ignition module (figure 5) pulse signal "B" corresponding to the end of each odd-numbered half cycle of the primary current of the ignition coil working channel. As a result, when you reset the counter to zero (for half the period of the primary current before the end �rogramme given duration of the current spark discharge) from the output of this counter in the ignition unit is issued amplified at the output port 31 of the control signal is logic high "And". It opens bipolar transistor 26 (figure 5), which closes the housing in a working channel of the circuit reclosing of the thyristor key TKS 21/1 (see above) and thus prevents the possibility of continuing the current spark discharge, ensuring equality of actual and programmatically set duration. With alternating signals U1, U2 repeats the census information of the counter-register 36 in the binary reversible counter 37 with the subsequent implementation of the software given duration (and fixed high voltage) identical spark discharges in the remaining cylinders of the internal combustion engine. When you do this programmatically specified duration in the counter-register 36 is maintained unchanged until the arrival of the next signal NO, upon receipt of which repeats the same cycle definition given duration of the next spark discharge and its subsequent implementation in the four cylinders of the internal combustion engine with ignition module, ensure the continuity of the process of sparking with strict observance of the priority of the work of this unit and the ignition of the fuel charges in the cylinders of the internal combustion engine according to the signals U1, U2 external MP system CPP.

As a result, the implementation of "the Way of programmatic regulation of the duration of the spark discharge ignition condenser" reveals a fundamentally new functionality forming�tion of this most important parameter sparking and provides convincing enough to expand the Arsenal of technical means for this purpose.

Technical result of the implementation of the "Way" consists in the ability to:

1. To generate spark discharges with software setting the optimum duration of each of them taking into account the functional dependence of the intensity of engine operation involved in their regulation (including temperature).

2. To ensure the mutual independence of the parameters of high voltage and program duration spark discharges, allowing to set and implement the duration of each of them (with a duty cycle up to units) with a repetition rate of, guaranteed to overlap any range of possible practical use in the operation of existing and the design perspective of high-speed internal combustion engines.

3. Optimally corresponding to the real needs (metered) use duration spark discharges (and, indirectly, their energy), eliminating unnecessary overload of the high voltage path and the ignition unit and increases the efficiency of the process of sparking.

4. To ensure the deficiencies of each of the developed program of sparking in the process of bench testing (using all prescribed engine operating modes), allowing virtually eliminate the misfire of fuel charges fuel assemblies caused by scroobious�.

5. To ensure reliable sparking during all modes of engine operation, including a deep depletion of the fuel Assembly, which allows to improve thermal efficiency of internal combustion engines and to improve environmental safety by reducing emissions of carbon monoxide and unburned hydrocarbons in exhaust gases.

6. To ensure the dependence reliably implement any programmable parameters sparking only on the power and performance of PPN ignition module (it is enough to just solve engineering problems).

To construct the blocks of the plugs on the wiring diagram "Method" sufficient range of electronic components for wide application. When you select transistor switches STK (20/1 and 20/2, figure 5) should be taken into account periodic increase of the collector potential to the total voltage of the charge accumulating (17/1, 17/2) and bit (19/1, 19/2) capacitors in moments of overcharging the latest in a polarity opposite to the original (i.e. with the negative potential on the anode of the thyristor keys TKS 21/1 and TCS 21/2). Also discharge capacitors should be used with a small value of tangent of dielectric loss angle. To complete the MCR can be used sensors MP systems ignition timing: temperature sensor 19.3828; sensor synchronization 141.3847; sensor time�of Azania strain; wideband oxygen sensor LAF-Sensor quality FA; double outlet coils ignition type 29.3705. When sharing a "Method" with integrated control systems automotive engine (ESAU-vases, MIKASA, etc.), as well as with MP systems of regulation of a corner of an advancing of ignition (MS "electronics", etc.), there is no need in this configuration, since all the necessary information about the current engine operation can be borrowed from these systems. To build a controller with enough MP kit CR using ROM high capacity RA (or 27.128). For the formation of its output control signal "And" perhaps the use of reversible binary counters CIE, and for local tracking system to maintain a fixed voltage accumulating electrolytic capacitor (100 µf) - comparator CSA. With some refinement, the controller is a "Method" can be combined with the MP system the CPP. For example, in ewu KM BB1 this system processed input information sensors, the number of revolutions and load of the internal combustion engine, which must be supplemented normalized quality value FA for several special cases of this variant implementation "Method". Thus for the transformation of practically sinusoidal primary current of the ignition coil in a high voltage�tion is most appropriate to use ignition transformers with a fully closed core made of material with a rectangular magnetic hysteresis loop, Efficiency can reach 95% and almost double to surpass this parameter typical transistor ignition coils system for which this method of transformation is fundamentally not available.

LIST of GRAPHICAL MATERIALS

Figure 1 - waveform of the voltage drop across load resistor 14 Ohm current spark discharges (restricted to the level of his current 0.1 A values) in the bench tests of practical design "Method" with a power consumption of 100 Watts. Zoom scanner: vertically - 1.0 V/cm; horizontally to 0.5 msec/cm; A - trigger mode of the internal combustion engine; "B" idle; "B", "G", "D", "E" operating modes.

Figure 2 - option matrix charts three-dimensional characteristics of the constants programming duration spark discharges in a functional depending on the number of revolutions of the internal combustion engine and the depletion depth (quality) of the fuel Assembly.

Figure 3 - option matrix charts three-dimensional characteristics of the constants programming duration spark discharges in a functional depending on the number of revolutions and load of the internal combustion engine.

Figure 4 is a block diagram of the implementation of the "Way".

Figure 5 - schematic of the ignition module.

Figure 6 - block diagram of the controller (block program management BPS).

Figure 7 - electrical signals of the secondary windings of current transformers PT and FRI�25.

Figure 8 is an electric circuit forming a control signal And provide program duration spark discharges.

1. Method software controlling the duration of the spark discharge ignition condenser, consisting of the fact that the output voltage of the PPN charge accumulation and discharge capacitors, the signal of the external system of ignition timing open latch-key, through which the discharge of the discharge capacitor to the primary winding of the ignition coil, resulting in excite in the circuit formed by this bit capacitor and the primary winding of the ignition coil, harmonic oscillations of the voltage of the primary current of the coil, transforming its secondary winding in the high voltage spark discharge, to maintain high voltage and duration which make up the energy and the charge voltage of the discharge capacitor from accumulating at the end of each period of the primary current by turning on a transistor switch at time points coinciding with the overcharge discharge of the capacitor in the polarity of his original charging voltage and also in these moments produce repeated actuation of the thyristor key, limit the duration of the spark discharge blocking the reclosing, characterized in that regulate the length�alnost each spark discharge, what is it used for the controller, in ROM which is used as program constants programming functional dependence of the duration from the current values are involved in its regulation of operating modes of the internal combustion engine, in concert with the work in which real-time technical information install these sensors current values by which define in the program ROM constant programming the duration of the upcoming spark discharge and issue to the controller output control signal which ensures the equality of the current duration of this spark discharge specified under the program in the implementation of its parameters in all cylinders of the internal combustion engine.

2. A method according to claim 1 software controlling the duration of the spark discharges, characterized in that is used in the ROM of the controller program functional dependence of the duration of the spark discharges from the speed and quality of the fuel Assembly.

3. A method according to claim 1 software controlling the duration of the spark discharges, characterized in that is used in the ROM of the controller program functional dependence of the duration of the spark discharges from the number of revolutions and load of the internal combustion engine.

4. A method according to claim 1 software controlling the duration of the spark discharges, characterized in that is used in the ROM of the controller program functional dependence �littelest spark discharges on the quality of the fuel Assembly and the load of the internal combustion engine.

5. A method according to claim 1 software controlling the duration of the spark discharges, characterized in that is used in the ROM of the controller program functional dependence of the duration of the spark discharges from the number of revolutions of the internal combustion engine.

6. A method according to claim 1 software controlling the duration of the spark discharges, characterized in that the load in the ROM of the controller program functional dependence of the duration of the spark discharges according to claim 2 or 3 or 4 or 5 in two versions - for the threshold temperature of the coolant of the internal combustion engine to 65 degrees Celsius and above.



 

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