Method of engine operation (versions) and engine system

FIELD: engines and pumps.

SUBSTANCE: invention can be used in diesel internal combustion engines (ICE) fuel supply control systems. Disclosed is method of number of fuel injections controlling supplied into ICE cylinder during cylinder cycle. According to disclosed method in ICE cylinder first and second fuel is fired, wherein combustion phase is controlled when second fuel is fired, as compared to, when first fuel is fired and number of fuel injections supplied into cylinder during cylinder cycle in response to combustion phase.

EFFECT: reduced toxicity of ICE exhaust, reduced combustion noise.

7 cl, 8 dwg

 



 

Same patents:

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

FIELD: engines and pumps.

SUBSTANCE: device for fuel supply control is offered, which comprises a nozzle (1) with a spring-loaded needle and an electromagnetic operating valve, an individual high pressure control valve (20) with piezodrive for each nozzle (1) and an individual fuel pump (26) for each nozzle driven by a camshaft (25) connected kinematically with a crank-shaft. The system is controlled using the electronic control unit. Besides, the method of fuel supply control is offered by means of which it is possible to performed at least one preliminary injection, at least one main injection with the pre-set shape, and at least one injection after the main one.

EFFECT: realisation of optimum forms of the main injection in nozzles with individual fuel pump.

2 cl, 3 dwg

FIELD: motors and pumps.

SUBSTANCE: method of fuel supply control is proposed, which consists in that the fuel pressure is formed using the high pressure fuel pump, the fuel is supplied to the high-pressure hydraulic accumulator, and a certain pressure level is established therein using the high-pressure control valve, the fuel is supplied to each injector at the pressure set for all injectors from common high pressure hydraulic accumulator, the fuel is supplied under the needle and to the camera above the needle, during injection the fuel from the camera above the needle is sent for draining through the duct, which is opened by the injector control valve with piezoelectric drive, due to the difference of pressures above and below the needle the needle lifted and fuel is injected, the control valve is closed, the fuel is supplied under high pressure to the camera above a needle, the needle is shifted to the seat due to high-pressure, effecting the needle from above. Using the proposed method it is possible to perform at least one preliminary injection, at least one main injection and at least one injection after the main one. Besides the device for implementation of the fuel supply control method is offered.

EFFECT: improvement of precision of dosing of amount of injected fuel and optimization of the fuel combustion process.

2 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: method is proposed to control fuel supply, which consists in the fact that fuel pressure is created with the help of a high pressure fuel pump (13), fuel is supplied into a high pressure hydraulic accumulator (6), certain pressure level is set in it with the help of a high pressure control valve (14), maximum voltage is applied to a piezodrive of a nozzle needle (1) with a multiplier, the needle is moved to a seat, and fuel is cut, fuel is sent for drainage via the high pressure control valve (14) of the high pressure hydraulic accumulator (6) during cutoff. Voltage below the maximum value is supplied to the piezodrive of the nozzle needle (1), the needle and the piezodrive are moved upwards due to fuel pressure, fuel is supplied under the needle, fuel injection is carried out. With the help of the proposed method at least one preliminary injection may be carried out, as well as at least one main injection and at least one injection after the main one. Besides, the device is proposed to realise the method of fuel supply control.

EFFECT: increased accuracy of dosing of quantity of injected fuel and optimisation of fuel combustion process.

2 cl, 3 dwg

FIELD: motors and pumps.

SUBSTANCE: method of control of fuel supply and device for implementing the method of control of fuel supply is proposed. Using the proposed method at least one preliminary injection, at least one main injection and at least one injection after the main one can be carried out.

EFFECT: improving accuracy of dosing the quantity of fuel injected, optimisation of fuel combustion process, and implementation multi-injection with controlled duration and the pressure of injections by means of simple mechanical devices.

2 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed regulator comprises casing drive shaft (1), holder (2) of weights rigidly fitted on shaft (1), rotary weights (3) articulated in holder (2), rotary weight coupling (4) arranged coaxially with drive shaft to displace along shaft axis to rest via rod thrust bearing (26) against main lever (5) sliding in regulator casing to rest by screw thereon. Main spring (7) is engaged with main lever (5). Fuel pump rack (9) is arranged in casing and engaged with rack lever (10) gimbal mounted at coupling (4). Electromagnetic actuator (11) is fixed in casing and electrically connected with electronic control unit, control lever position transducer (23) gimbal mounted in the casing, diesel rpm transducer, rack coordinates transducer, transducers of air pressure and temperature in intake manifold and transducer of fuel pressure and temperature in low-pressure fuel line. Regulator incorporates backup adjustment mechanism including three-arm lever (24) pivoting at main lever (5) retained by spring (25) connected with the main lever articulated with the rod and contacting with two-arm lever (17) articulated with the casing. Two-arm lever (17) is connected with electric control link (20) and electromagnet (21) armature manual control tie (22) retained by spring (27) in contact with electronic control unit and lock ring (18). Lock ring (18 slides at rotary lever engaged with the casing and pressed by spring (14) and screw (15) against the casing and is linked with differential lever (12) via tie (13). Differential lever (12) swivels on rack lever (10) and is articulated with electromagnetic mechanism (11) of electronic control unit.

EFFECT: manual and automatic changeover from electronic regulator to mechanical one and vise versa.

4 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: engines and pumps.

SUBSTANCE: proposed device comprises nozzle with orifice without spring and with two valves with mechanical switching over from one position to another one, atomiser with one level of orifices, fuel tank, fuel feed pump, high-pressure fuel pump and high-pressure hydraulic accumulator.

EFFECT: better dynamics of fuel feed, higher indicated efficiency and controlled injection using simple mechanical means.

2 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: method of starting the ICE running on fuel contained in the tank comprises estimation of fuel amount, fuel volatility (PVR), fuel being injected into engine cylinder at starting subject to estimated fuel volatility (16). Estimated fuel volatility (15) is replaced by preset magnitude (20) at starting after replenishment.

EFFECT: easier starting at frost.

14 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises thermal machine 1 with load assembly, fuel hardware with fuel feed control element drive 5, shaft rpm transducer 2, fuel feed control element position transducer and fuel feed adjusting element position transducer. System comprises thermal machine first control unit 6, first comparator 8, second driver 7, second comparator 9, rpm transducer output signal multiplier 2 and fuel feed adjusting element position transducer, controller static parameter corrector 11, controller operation algorithms unit 12 and load assy power variator 13. First and second comparators 8, 9, second driver 7, controller static parameter corrector 11 and controller operation algorithms unit 12 are incorporated in microprocessor controller 14. Thermal machine shaft rpm transducer 2 is connected with second driver 7, second rpm transducer output signal multiplier 10, fuel feed element adjusting mechanism transducer and controller static parameter corrector 11. Fuel feed element adjusting mechanism transducer is connected with actuator 5, adjusting element 4, second comparator 9, rpm transducer output signal multiplier 2, fuel feed element adjusting mechanism transducer and controller static parameter corrector 11. Said controller static parameter corrector 11 is connected with multiplier 10 of rpm transducer output signal multiplier 2 and first comparator 8. First comparator 8 is connected with first driver 6 and controller operation algorithms unit 12. Said controller operation algorithms unit 12 is connected with actuator 5. Second comparator 9 is connected with second driver 7 and load variator assy is connected with thermal machine 1.

EFFECT: higher reliability.

5 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. This method comprises step whereat injection control device is used to evaluate if preset terms of fuel changeover logics are satisfied in engine running on several fuels. This is done to change fuel to drive by said fuel 1 to drive by said fuel 2.It includes the step whereat said logics is used to force the amount of fuel to engine cylinder 1 in every cycle in compliance with programmed pattern. This allows the fuel amount to be increased for involved atomiser. Note here that fuel amount injected by atomiser not involved in changeover. Note also that fuel amount is forced in other cylinders with sequential reiteration of said pattern. It comprises the step whereat patter portion is executed wherein total amount of fuel fed to said cylinder 1 is injected by atomiser involved in changeover. Fuel changeover is terminated when said patter portion is sequentially executed one time in all other cylinders. Invention discloses also the injection control device.

EFFECT: higher efficiency of engine operation.

6 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: feed system of a tractor diesel engine with manual feed control of a mixed fuel includes tanks (1 and 2) of vegetable oil and mineral fuel, mixer (9), in the inlet channels (10 and 11) of which throttle gates (12 and 13) with steering control levers (23 and 24) fixed on their axes (14 and 15) are arranged. Control levers (23 and 24) are kinematically connected to turning two-arm lever (28) having a possibility of being moved in slots of rigidly fixed sector (30) with indicator (31) under action of an externally applied force. Depending on a value of external resistances to movement of the tractor, an operator by manual movement of turning two-arm lever (28) along sector (30) sets the required volumetric ratio of vegetable and mineral components of the mixed fuel, or when necessary, changes over operation of the diesel engine to mineral fuel.

EFFECT: manual feed control of mineral fuel and vegetable oil provides for operation of a diesel engine on a mixed fuel both in modes of partial and full loads.

4 dwg

FIELD: engines and pumps.

SUBSTANCE: nozzle comprises casing (1), hollow sprayer (4) with conical seat (5) and channels (2, 3) for feed of the main and pilot fuels. Sprayer (4) accommodates spring-loaded needle (11) with conical locking surface made at its lower part to make with said sprayer (4) the under-needle chamber and mixing chamber. Sprayer (4) inner chamber has distribution chamber (18) communicated with fuel feed channels (3, 9) and with mixing chamber via circular channel (19). Needle (11) body has axial channel (20) communicated with radial channels (21) and fuel feed channels (7) and (8) via circular chamber (22). Note her that the main fuel is fed to chamber (22) and channel (20) while pilot fuel is fed to chamber (18) and channel (19). Nozzle mid part has the area (26) for additional adjustment of pilot fuel flow rate composed of stepped section of circular channel (19). Said channel is composed of combined ledge and mating circular groove with application of cylindrical surfaces of sprayer (4) and needle (11).

EFFECT: correction of mix composition, better fuel mix spraying.

3 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: power system of motor-and-tractor diesel engine involves fuel tanks (1, 2) for various fuels, heat exchanger (9), coarse fuel filters (11, 15), fuel backup pump (12, 16), fine fuel filters (14, 18), fuel injection pump (6), nozzle (8), fuel lines group (7), control module (19) and indicator lamps (27). Module (19) controls shut-off of thermostat (3) channels by adjusting required delivery of each fuel based on signals received from: temperature sensor (20) and fuel pressure pickup (21), coolant temperature (22), pump (6) rack (23) position, ambient air temperature (24), mode selection key (25) and controller (26) of mixture switching. Also the system is provided with mixer (5), located before pump (6) controlled by duplex four-channel thermostat (3) with hydraulic accumulator (4) located before it, additional heat exchanger (10) installed before filter (11), valves for fuel intake (13) located between filters (14) and (11), and sensor (24).

EFFECT: improving quality of motor-and-tractor diesel engine operation using bio-diesel and vegetable-based fuel, and reducing its consumption.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: biomineral fuel mixer is arranged in vehicle fuel tank and comprises external pipe 1 and comprises biological component feed line, internal pipe 4 with moving conical funnel 7, inner chamber 17 communicated with fuel tank chamber filled with mineral component. funnel 7 is connected by yoke 10 with road 11 loaded by return spring 15 and arranged inside solenoid 12 with electric circuit is connected via switch 13 to DC source 14. Additionally, contact temperature pickup 16 of engine cooling system is connected in the circuit between solenoid 12 and switch 13. Cold engine start and warm-up are executed on mineral component. With coolant temperature reaching 602C contacts of pickup 16 make so that solenoid 12 rod 11 displaces conical funnel 7 for it to allow the feed of biological component to mineral component at alignment of holes 5 and 9 on internal pipe 4 and funnel 7. Vehicle engine starts running on biomineral fuel. Engine shut down and cooled down, contacts of temperature pickup 16 break to de-energise the circuit of solenoid 12 and to make funnel 7 return to initial position with the help of spring 11 whereat vehicle engine starts running on mineral component.

EFFECT: automatic mixing.

1 dwg

FIELD: motors and pumps.

SUBSTANCE: components mixer of mixed diesel fuel containing external pipe with tank inlet channel secured in the tank bottom part; internal pipe with radial holes and output channel, cone funnel with cylindrical branch having radial holes that is kinematically connected via the plug with stock; the difference is that plug stock is driven from linear (or step) motor electrically connected with the electronic control box and transmitters of the engine load and speed modes; internal cavity of the cone funnel is connected with cavity of the mineral component tank, inlet channel in bottom of the external pipe is connected with vegetative component supply main line.

EFFECT: automatic control of percentage composition of mineral and vegetative components of mixed diesel fuel depending on load and speed mode of the engine.

1 dwg

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: transport.

SUBSTANCE: invention can be used in automotive vehicles equipped with ICEs. Control device is mounted at carrier. Said carrier comprises engine to run on first fuel and second fuel, second fuel being characterised by smaller emission. Device comprises fuel changing components to select between first and second fuel to be fed into engine. It comprises catalyst arranged in engine exhaust system and catalyst wear detector. Control device is designed to control catalyst wear when carrier operating range corresponds to that suitable for wear detection when fuel changing device feeds first fuel to the engine.

EFFECT: control device controls catalyst wear after carrier operating range corresponds to that suitable for wear detection when fuel changing device feeds second fuel to the engine.

7 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed ICE comprises compression ratio variator and valve open-close moment controller. Compression ratio in operation at low load as compared to that at high load increases while alcohol-bearing fuel is used as the fuel. Compression ratio at low load engine decreases when alcohol concentration in fuel is high as compared with low alcohol concentration in said fuel.

EFFECT: ruled out overexpansion in using alcohol-bearing fuel.

6 cl, 26 dwg

FIELD: engines and pumps.

SUBSTANCE: method of starting the ICE running on fuel contained in the tank comprises estimation of fuel amount, fuel volatility (PVR), fuel being injected into engine cylinder at starting subject to estimated fuel volatility (16). Estimated fuel volatility (15) is replaced by preset magnitude (20) at starting after replenishment.

EFFECT: easier starting at frost.

14 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to operating ICE running on first or second fuel. Note here that first fuel features lubing capacity sufficient for ICE valve seat lubing. Note also that said system comprises at least two fuel circuits for said two different fuels and at least one electronic control unit to control ICE operation on both said fuels. ICE operation is controlled so that first fuel is fed into engine in preset intervals.

EFFECT: sufficient lubrication of valve seats.

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