Method for engine

FIELD: engines and pumps.

SUBSTANCE: invention relates to method of vehicle engine control to reduce the event of premature ignition. Forced supply of residual gases from cylinder performing late combustion to the adjacent cylinder can be detected on the basis of engine block vibration detected while exhaust valve of cylinder performing late combustion is open. In response to the supply of residual gases inhibiting premature ignition action such as fuel enrichment or output of the operation is performed in an adjacent cylinder.

EFFECT: method for late ignition reducing caused by events of premature ignition in the cylinder is proposed.

11 cl, 7 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: invention can be used at designing control system for ICE 2 running on several types of fuel. Identification of knocks at changing the type of fuel consists in registration of characteristic of signal (ikr) describing the ICE housing noise and definition of base level of background noise (rkr) by filtration in low-pass filter (LPF) LPF filtration factor (TPF) is varied during transition from one fuel to the other. Note here that magnitude of said factor is set to lower value that moment. Occurrence of knocks is defined proceeding from threshold value (SW) to be coordinated at changing of fuel type. Proposed device comprises housing noise registration unit 5 to record the characteristic of signal (ikr) and knocks identification unit 4 to register aforesaid signal and to determine its base level (rkr). Adjustment is performed by changing the throttle position, amount of fed fuel or ignition dwell angle.

EFFECT: lower probability of false operation of control system.

7 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICEs. Particularly, it relates to engine adaptation of octane number by conversion of identified octane number. Proceeding from check advance ignition adjustment at engine operating range for definite octane number said operating range is divided into several zones (1-16). Note here every said zone comprises includes antiknock advance ignition correction magnitude of check adjustment. Changeover to check adjustment corresponding to lower octane number is performed. When threshold magnitude of advance correction cycle (S1_2-S16_2) is exceeded at one zone, or when zone counter wherein another threshold magnitude (S1_1-S16_1) is exceeded, multi-zone threshold (S3) is exceeded.

EFFECT: engine adaptation to fuel octane number.

6 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to internal combustion engines. Particularly, it relates to adaptation of engine to fuel octane number by conversion of the fuel identified octane number. Proceeding from spark advance check adjustment in the area of measured engine operating magnitudes, for definite octane number this area of measured engine operating magnitudes is divided into several zones (1-16); note here that every said zone comprises antiknock correction value for spark advance for said check adjustment. Here, changeover to check adjustment is performed corresponding to higher octane number: when incremental counter (TDC_CTR) of TDC number exceeds definite threshold (S3) if advance correction at current zone is smaller than definite threshold (S1_1-S16_1), or when zone number counter wherein advance correction cycle is smaller than the other threshold (S1_2-S16_2) exceeds multi-zone threshold (S3).

EFFECT: engine adaptation to fuel octane number.

7 cl, 3 dwg

FIELD: transport.

SUBSTANCE: electronic control unit (ECU) of the engine executes a program with the following stages: detecting the value of the engine vibration (stage S102); detecting the wave shape of the engine vibration based on the said value (stage S104); calculating the quotient K of correlation if the engine rotational frequency NE is less than the threshold value NE (1), using the sum of the values where each value is calculated by substracting the positive reference value from the value taken in the shock shape model , the sum is used as the area S of the shock shape model; and calculating the quotient K of correlation if the engine rotational frequency NE is not less than the threshold value NE (1), using the whole area S of the shock shape model (stage S114); and determining whether the detonation occurred or not, using the quotient K of correlation (stages S120, S124). The quotient K of correlation is calculated by dividing the sum of remainders by the area S, where each remainder is a remainder between the value on the vibration wave shape and the value on the shock shape model.

EFFECT: creation of method and device for detecting the detonation which is capable of detecting precisely whether the detonation occurred or not.

24 cl, 28 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed internal combustion engine comprises expansion ratio control mechanism A to vary expansion ratio and mechanism C to control gas phase distribution at outlet to vary moment of opening of exhaust valve 9. Expansion ratio and moment of exhaust valve opening are selected subject to engine load so that with engine load increasing, expansion ratio increases while moment of exhaust valve sifts toward delay in intake stroke BDC.

EFFECT: higher thermal efficiency.

6 cl, 23 dwg

FIELD: transport.

SUBSTANCE: output signal of device detonation pickup 28 is filtered by multiple of band filters 36-39 to extract components of multiple frequency bands oscillation (f1-f4). Weight factor G1-G4 multiplying component of frequency band oscillation in each frequency band is set so that said factor increase with increase in frequency band noise intensity. Thus, component of frequency band oscillation in each frequency band is synthesized by weighing in compliance with effects of noise intensity in every frequency band.

EFFECT: decreased noise, higher accuracy of detonation determination.

5 cl

FIELD: engines and pumps.

SUBSTANCE: method to control operation of an internal combustion engine with multiple combustion chambers includes introduction of advance into synchronisation of ignition in the first subgroup of combustion chambers from working synchronisation of ignition, until a detonation event is registered, simultaneously operation of other combustion chambers with working synchronisation of ignition is controlled. The first border of detonation is determined for the first subgroup of combustion chambers in compliance with the difference between working synchronisation of ignition and ignition synchronisation in case of the detonation event. Properties of fuel supplied into combustion chambers are determined in compliance with at least the first detonation border.

EFFECT: provision of internal combustion engine operation parameters control with account of fuel quality variation and conditions of engine operation.

20 cl, 4 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention is aimed at increasing efficiency of discrimination of signals caused by knocking in internal combustion engine from signals caused by other noises in engine. Method is implemented by means of at least one detonation combustion sensor and signal processing unit installed after detonation combustion sensor and provided with at least one comparator. Output signal from detonation combustion sensor is compared after processing by comparator with variable reference value of level formed basing on preceding output signals of said combustion detonation sensor. Reference value of level passes into comparator through low-pass filter, and comparator indicates presence or absence of knocking basing on results of comparing. Tracking of reference value of level or calculation of value of input signal of low-pass filter are carried out at least by two different methods. Method is chosen depending on presence or absence of dynamic mode of engine operation.

EFFECT: improved efficiency of discrimination of signals caused by knocking.

5 cl, 6 dwg

The invention relates to a method and apparatus control the detonation of the internal combustion engine (ice)

The invention relates to a method of eliminating detonation knocking in the internal combustion engine (ice) when in dynamic mode

FIELD: engines and pumps.

SUBSTANCE: invention may be used in supercharge diesels. Proposed method is intended for diesel (1) including pipe (2) to feed air into diesel (1), diesel exit gas exhaust pipe (3), diesel soot filter (31) arranged in exhaust pipe (3) and exit gas circulation system (50, 60) to return exhaust gas into diesel (1). Exhaust gas circulation system comprises off-gas circulation line (60) to receive exhaust gas from exhaust pipe (3) downstream of soot filter (31). Method of diesel control consists in setting the threshold (Sth) for amount of soot getting into off gas circulation system. Besides, actual amount (Saa) of said sooth is defined. Now, the procedure of off-gas circulation line protection is actuated if actual amount (Saa) is higher than said threshold (Sth). Besides it discloses the device to this end.

EFFECT: reduced sooting.

12 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises compression ratio control mechanism (A) designed to vary compression ratio. Besides, it comprises valve timing control mechanism (B) designed to vary intake valve closing moment wherein preset is the inhibited zone for combination of mechanical compression and intake valve (7) closing moment to inhibit getting of working point in inhibited zone. Said working point represents a combination of mechanical compression degree and intake valve (7) closing moment. Said of mechanical compression degree and intake valve (7) closing moment can vary from current working point in direction towards required one on the side of lower mechanical compression degree without getting in inhibited zone when compression mechanism fails.

EFFECT: required combustion at lower compression ratio at failure of compression control mechanism.

11 cl, 57 dwg

FIELD: transport.

SUBSTANCE: invention relates to transport and can be used in processes of fuel combustion in internal combustion engines (ICE). In the method, both charge stratification and homogeneous air-fuel mixing is provided by means of changing at least one injection parameter. The method consists in adjustment of fuel injection depth by means of changing injection pressure. Injection depth is adjusted within total depth of combustion chamber, and injection pressure is changed either smoothly or in steps, in particular using mode selector. Mode selector provides at least two fixed charge stratification modes with possibility of their selection or switching between them. Herewith, within used modes the injection duration parameter can be set in proportional dependence or in one of types of nonlinear dependence on injection pressure: differential, integral, logarithmic or any other nonlinear dependence.

EFFECT: wider range of fuel depletion degrees which improves efficiency and cleanliness of exhaust ICEs.

8 cl, 1 dwg

FIELD: automotive industry.

SUBSTANCE: in the method, the device, the medium, and the vehicle of correction of combustion parameter the value of the parameter Pi is set (104) by interpolation between two pre-determined values Piref1 and Piref2 depending on the CO value of the engine mode and on the temperature of the engine coolant, and the values Piref1 and Piref2 are optimal for reducing polluting emissions when the control fuel is fed to the engine respectively to high volatility and low volatility.

EFFECT: limitation of polluting emissions during the blowdown of the vehicle engine.

8 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed device comprises section 2 to control conditions of heat source 1 mounted at vehicle, section 5 to calculate required heat, section 4 to estimate fuel feed and section 6 to increase heat emission. Section 5 to calculate required heat calculates expected amount of heat required for heat consuming device 3 that uses heat emitted by source 1. Section 4 to estimate fuel feed estimates expected fuel feed from source 1 to heat consuming device 3 Section 6 to increase heat emission requests section 2 to increase emission of heat from source 1 when amount of heat estimated by section 4 is lower than that calculated by section 5. Invention covers the design version of said control device.

EFFECT: reduced loss of heat.

26 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed ICE system comprises: high-pressure hydrogen source 1, pressure regulator 2, pressure regulator control unit 3, electromagnetic valve 4 with control unit 5, spark plug 6, ignition system 7, trigger pulse generator 9, trigger pulse delay element 8, load pickup 10, crankshaft rpm pickup 11, combustion chamber gas pressure pickup 14 and hydrogen pressure pickup 13. Pressure regulator control unit 3 electromagnetic valve control unit 5 are connected with gas pressure pickup 14 and hydrogen pressure pickup 13. Pressure regulator control unit is connected to ignition system 3.

EFFECT: reduced hydrogen consumption.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) includes variable compression degree mechanism and gas distribution phase control mechanism. Variable compression degree mechanism has the possibility of changing mechanical compression degree. Gas distribution phase control mechanism has the possibility of controlling the inlet valve closing moment. During ICE operation at low load the mechanical compression degree is higher than that during operation at high load. At load increase the mechanical compression degree decreases gradually. At ICE operation the first and the second air-fuel ratios are performed randomly; at that, the second ratio is bigger than the first one. At ICE operation at high load the first air-fuel ratio is performed. At ICE operation at low load, when mechanical compression degree is lower than the pre-defined reference value, combustion is carried out with the first air-fuel ratio, and when mechanical compression degree is higher than reference value, combustion is carried out with the second ratio.

EFFECT: improving combustion process arrangement allowing to obtain high thermal efficiency.

5 cl, 17 dwg

FIELD: engines and pumps.

SUBSTANCE: ignition control device of general-purpose internal combustion engine (10) supplying the ignition signal in compression stroke and exhaust stroke of four-stroke cycle cuts out (S10, 8108) one of ignitions which shall be performed as per two output ignition signals, and measures engine speed after ignition cutout after the ignition is cut out (S10, S110). For each of two ignition signals it is determined whether it was given out in compression stroke or in exhaust stroke, on the basis of difference of average engine speed and engine speed after ignition cutout (S10, S112-S120). Ignition is controlled as per ignition signal determined as that of two ignition signals, which was output in compression stroke (S12).

EFFECT: longer service life of ignition plug of engine and simpler design.

8 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: in control device for internal combustion engine the module (10) of output of requirements outputs various requirements of internal combustion engine characteristics, which is expressed in terms of torque moment, efficiency or composition of air-fuel mixture; adjustment module (22) of torque moment gathers from many values of requirements, which are output from module (10) of requirement output, only the requirement values expressed in terms of torque moment, and adjusts values of requirement in torque moment to one; module (24) of adjustment of efficiency gathers the values of requirements, which are expressed in efficiency terms, and adjusts values of the requirement in efficiency to one; module (26) of adjustment of air-fuel mixture gathers values of requirements, which are expressed in terms of composition of air-fuel mixture, and adjusts the values of requirement included in air-fuel mixture to one; calculation module (30) of control variables calculates control variables of actuators (42), (44) and (46) on the basis of value of the requirement in torque moment, value of requirement in efficiency and value of requirement included in air-fuel mixture, which are output from adjustment modules (22), (24) and (26) accordingly.

EFFECT: providing accuracy of introduction of requirements connected to various characteristics of internal combustion engine to operation of actuators, and proper achievement of those requirements.

9 cl, 10 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) control device consists in controlling variable calculation device and drive control device. Controlling variable calculation device calculates many controlling variables that help to control energy generated by ICE. Drive control device influences controls of many executive mechanisms on the base of many controlling variables. Controlling variable calculation device includes required value calculation device that refers to ICE (61) energy, ICE (62) emission, heat losses at ICE (63) cooling and required values summing device (64). Required values summing device summarises every required value to define required summed value. Controlling variables also can be intake air quantity and ignition timing. Controlling variable calculation device can additionally include calculation means of supplied fuel quantity, intake air quantity, ignition timing (67), exhaust gas energy estimation (70) devices, second ignition timing device (68) and corrective device (69).

EFFECT: creation of ICE control device that allows realisation of many functions.

6 cl, 11 dwg

FIELD: electricity.

SUBSTANCE: control device comprises inductance coil, electronic key, diode and control circuit, at that electronic key is coupled between negative bus of onboard network, inductance coil and diode anode, the second output of inductance coil is coupled to positive bus of onboard network, which second output is coupled to control circuit. Capacitor, controlled square-wave generator and the second diode are introduced into the device; at that diode cathode is connected to input of control circuit by the first capacitor output and anode of the second diode, diode cathode is connected to the first output of the nozzle, control input of controlled square-wave generator is related to output of the control circuit.

EFFECT: reduced power consumption and higher reliability of the circuit.

1 dwg

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