Method for engine (versions)

FIELD: engine devices and pumps.

SUBSTANCE: method for engine (10) is that the intake air is directed from the intake manifold (22), downstream of the compressor (14), to the exhaust manifold (36), upstream of the turbine (16), by external recirculated exhaust gases (EGR) and positive overlapping of the valves (62), (64) through the cylinder (30). The direction of intake air through the external EGR is that the EGR valve (52) is opened in the EGR channel (51) located between the intake manifold (22) downstream of the compressor (14) and the exhaust manifold (36) upstream of turbines (16). The amount of air directed through the EGR and the air directed through the positive overlapping of the valves are adjusted based on the operating conditions of the engine. Invention discloses versions of described method for engine.

EFFECT: increased turbocharger performance.

20 cl, 4 dwg



Same patents:

FIELD: engines and pumps.

SUBSTANCE: diesel injector spray nozzle for biofuel includes housing (1) and needle (2). Needle (2) is located in housing (1). Annular groove (3) is made on inner surface of housing (1). There is well (6) and fuel spray holes (5) in lower part of housing (1). Inner part of holes (5) is provided with fuel flow shapers. The latter contribute to carbon formation reduction. Each shaper can be made in the form of insert (7) with screw channels, which is then continued to conical chamber (8) and to nozzle holes (5). Insert (7) is made in the form of a screw with double-threaded winding and turns of rectangular section.

EFFECT: possibility of achieving finer biofuel spray is provided.

5 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: invention proposes a fuel system containing fuel pump 28, a fuel pressure amplifier and injection nozzle 1. In housing 2 of the pressure amplifier there located is spring-loaded piston-multiplier 3, opposite which disk 11 separating drain valve 12 located after it is installed. A cavity between disk 11 and piston-multiplier 3 is interconnected with fuel accumulator 18 is interconnected with the fuel accumulator through a discharge valve and contains spring-loaded plunger made in the form of a pipe located in head of cylinders 5. Fuel pump 28 is interconnected with the fuel accumulator through a discharge valve and contains spring-loaded plunger 29 having a drive from cam shaft 26 of the engine. Plunger 29 is located in a sleeve installed in a cartridge enveloping a return spring of the plunger, which is arranged about the sleeve.

EFFECT: reduction of pressure losses of fuel supplied to the injection nozzle to increase spray pressure of fuel to engine cylinders to improve a process of mixture formation, and therefore, fuel combustion.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: this device comprises fuel pressure booster, body (1) provided with tubular section (2) fitted in the engine cylinder head (3). Sleeve is fitted on body section (2) and provided with threaded joint with cylinder head (3) to abut on crescent-shaped inserts (5). The latter are fitted in circular groove made in the body section (2). Tapered end of section 1 is fitted in funnel made in the case of atomiser (6).

EFFECT: decreased fuel pressure drop, higher fuel injection pressure, better combustion.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: device to feed fuel to nozzle (1) comprises pressure booster with case (2) accommodating spring-loaded stepped piston-booster (3). Barrel-like case (2) houses disc (11) opposed to booster piston (3). Electromagnetically controlled drain valve (12) is arranged behind said disc. Said valve as-opened communicates chamber (14) with drain pipe via holes in disc (11) and in case (2). Booster piston houses return piston (15). Chamber between disc (11) and booster piston (3) communicates with fuel accumulator (18) arranged in cylinder head (5).

EFFECT: decreased fuel pressure losses, increased fuel injection pressure.

2 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: fuel pressure booster is offered in a housing 1 of which a step hole 12 is provisioned, where a boosting piston 13 with a return spring 14 is located. In the piston 13 a spring-loaded check valve 16 locking fuel passing from the nozzle 6 towards the cover 8 of the housing is located. In front of the locking element of the valve 16 its seat 17 is installed which has a threaded connection with the piston 13. The seat 17 has a through axial hole 18 located opposite to the valve locking element 16 and the throttle lateral opening 19 interconnecting the hole 18 through the hole 21 in the piston 13 with the cavity 22 in the housing 1 where the spring 14 is located. The cavity 22 is interconnected through the throttle hole 24 with the controlled drain valve 25.

EFFECT: decrease by simple means of losses of pressure of the fuel supplied to a nozzle and by that increase of pressure of injection of fuel into engine cylinders for improvement of mix forming process.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: device for supply of fuel to the engine nozzle 1 is offered which contains a fuel pressure booster inserted into a cylinder head of an engine and having a housing 2 designed as a barrel with collar. In the housing 2 the spring-loaded step boosting piston 3 is located. The bushing 23 with a threaded connection with the cylinder head is put on the housing near the collar. Between the housing 2 and the nozzle the fixing ring 6 having a threaded connection with the cylinder head, the washer 7 with the conic hollow located from the nozzle side, the tubular rod 8 with the conic ends located in the hollow made in the washer 7, and in the funnel made in the nozzle housing, are installed.

EFFECT: decrease of losses of pressure of the fuel supplied into a nozzle, increase of pressure of fuel injection into the engine cylinders and improvement of mix forming process without complication of the nozzle design.

3 cl, 2 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 fuel feed corrector comprises high-pressure fuel pump with fuel feed proportioner, temperature gage arranged at high-pressure fuel pump inlet and electrically connected with actuator articulated with fuel feed corrector. Besides, it is equipped with the bar its length being varied by screw-nut gearing with one end connected with high-pressure pump proportioner and opposite end connected with actuator built around stepping motor control by electric control unit in response to signals generated by temperature gage.

EFFECT: higher accuracy of correction.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine (ICE) includes cylinders, fuel spray injectors (11-18) and at least two common high pressure fuel lines (R1, R2). Cylinders are grouped at least in two rows (B1, B2). Injectors (11-18) of one row (B1, B2) of cylinders are connected to different common high pressure fuel lines (R1, R2). Also, ICE version with cylinders grouped at least in two rows (B1, B2) in which each atomiser is connected to one of common fuel lines (R1, R2) is described. Each common fuel line (R1, R2) has its own high pressure pump and common fuel lines (R1, R2) are hydraulically connected to each other. Besides, there described is operation control method of ICE with several cylinders, the common fuel lines (R1, R2) of which are hydraulically connected to each other, at which fuel pressure in one common fuel line (R2) is controlled, and pressure is controlled in advance in the other common fuel line (R1).

EFFECT: reduction of pressure fluctuations in common high pressure fuel lines.

10 cl, 6 dwg

FIELD: engine engineering.

SUBSTANCE: invention relates to engine engineering, particularly to high pressure fuel supply systems equipped with systems controlling fuel injection pressure in locomotive diesel cylinders. Automatic fuel injection pressure control system depending on diesel operation modes is provided with pneumatic filling up injectors connected to the common locomotive air main-line through the by-pass pipeline and standard electro-pneumatic valve coupled with switching contacts of locomotive driver controller. The system is provided with three by-pass pipelines connected to the pneumatic filling-up injectors and common locomotive air main-line. Pneumatic gear boxes and electric pneumatic valves are installed in each by-pass pipeline. They are coupled with a plus side of power supply terminal through the reverse and direct auxiliary contacts of a standard electromagnetic contactor switch. Two pairs of additional contacts are also available in the by-pass pipelines, which control electro-pneumatic valves operation. The above mentioned electro-magnetic valves are cinematically connected with two additional edge cams being rigidly installed on a driven rod of locomotive driver controller.

EFFECT: wide range of injection pressure control and fuel injection pressure changing in not only idle mode, but also at partial diesel loads.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production, in particular, to ICE control systems. The proposed ICE control device comprises a set of fuel injection mechanisms including one first fuel injection mechanism to inject fuel into the cylinder and one second mechanism to inject fuel into inlet manifold. Note that every cylinder is furnished with the aforesaid set of mechanisms. The proposed device incorporates also a controller to exercise control over the said first and second fuel injectors and to distribute the injected amount in compliance with the ICE specs, and the ICE temperature detector. The said controller computes the change in the amount of fuel to be injected by the aforesaid first and second fuel injection mechanisms with the idling engine and corrects the aforesaid amount allowing for computed change. There are several versions of the device embodiment described by the formulae enclosed.

EFFECT: ICE control device accurately defining amounts of fuel to be injected for cold and warmed up engine states.

18 cl, 10 dwg

FIELD: engines and pumps.

SUBSTANCE: this invention allows control over nitrogen oxides emission. System to this end proceeds from computation of error set by the difference between first measured value received from nitrogen oxide pickup (7) and second value obtained from evaluation of nitrogen oxides. Said pickup (7) can be used in adaptation circuit wherein exhaust gas recycling control system runs with or without feedback. Said system is tuned to make expected nitrogen oxide emissions from exhaust gas recycling controller comply with those measured by said pickups at stationary operating conditions.

EFFECT: higher rate and accuracy of adaptation of nitrogen oxides emissions.

5 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to control systems of operation of internal combustion engines. The result is achieved by determination of mass flow rate of recirculation (dmEGR) of exhaust gas from difference between full mass flow rate (dmTot) of exhaust gas through engine cylinders and mass flow rate (dmTurb) through a turbine, which is determined as per the turbine model.

EFFECT: measurement and control of recirculation degree of exhaust gas in an internal combustion engine system containing EGR cooler of EGR valve and a turbine.

16 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICEs. Invention discloses control over oxygen pump cell of ICE transducer or in ICE extra exhaust gas purification system. Note here extra control stage is added to current control step with feedback with advance whereat oxygen pump expected current proceeding from parameters of exhaust gas composition computed on the basis of engine operation data.

EFFECT: better quality and precision of oxygen pump cell operation.

7 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine building industry and can be used at stationary plants at operation of an engine on different types of fuel, namely on oil. The invention proposes a control method of fuel parameters in a fuel feed system of a multifuel engine, which consists in the fact that the engine start is performed on standard fuel; then, non-standard fuel is supplied to the engine by means of an injection pump (IP) (6); pressure of non-standard fuel is controlled in a make-up engine line by changing IP rotation speed and temperature of non-standard fuel is controlled at the inlet of fuel boost pump (FBP) (10) located at the inlet of the high pressure fuel pump (HPFP) of the engine by heating or cooling of excess non-standard fuel that is fed from HPFP to the inlet of FBP (10) or IP (6).

EFFECT: possibility of controlling fuel parameters by changing its pressure and temperature at engine operation on fuels with a wide range of viscosities; exclusion of a possibility of mixing standard and non-standard fuel when switching-over the make-up line from one type of fuel to another and simplification of a fuel feed system.

4 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. Proposed method for ICE (1) consists in that supercharging air is forced, at increased power output, with pre-compression into ICE by two-step supercharge from low-pressure stage (ND) and high-pressure stage (HD). At low power output, supercharge air is forced with pre-compression into ICE (1) by compressor as the third supercharge pressure. Invention disclosed versions of supercharge assembly to this end.

EFFECT: high power output irrespective of geodesic altitude.

10 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in operation of ICEs. Proposed method is based on measurements. These include engine rpm measurements at appearance of derivatives peaks by rpm of autocorrelation function ACF or acceleration power spectrum of accelerations, mean in an acceleration cycle. Shifts in time of mutual autocorrelation function peak (MACF) of said accelerations and run out relative to the peak of run out ACF are measured. Inclination of phase-frequency characteristic of mutual power spectrum of said accelerations is measured. At determination of IAA in separated cylinders, this method proceeds from rpm measurement at appearance of the peaks for rpm derivatives of said mean accelerations. Besides, it proceeds from time shift of acceleration ACF peaks or full load at working stroke of every cylinder relative to TDC. Besides, it proceeds from the peaks of acceleration MACF and run out at working stroke relative to those of ACF and run out and from inclination of phase-frequency characteristic of mutual power spectrum of said accelerations. In the case of ICE with unbalanced harmonic, used is, similarly, the shift of relative unbalanced harmonic of acceleration. Proposed device comprises rpm and first cylinder TDC transducers, differentiators, signal and peak registration units, angular mark count start timing unit, measurement frequency, angular mark cycle and number masters, rpm and acceleration averaging units, level selector, correlation meters, power spectrum meter, two peak meters, two IAA determination gadgets and PFC meters.

EFFECT: simplified process, lower labour input, higher precision.

9 cl, 11 dwg

FIELD: transport.

SUBSTANCE: process for adjustment of first and second fuels feed into engine running on first fuel in first operating mode and on the mix of first and second fuels in second operating mode. Note here that proposed process includes the steps that follow. 1) Calculation of first fuel amount Md required engine operating in said first mode. 2) Calculation of fuel energy Fe proceeding from amount Md to ensure the latter Md. 3) Determination of minimum decreased first fuel amount Fdmin required for operation in second mode. 4) Calculation of second fuel amount Msub which, in decrease in diesel fuel amount Fdmin, should ensure fuel power equivalent to Fe.

EFFECT: higher efficiency.

24 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to control of an internal combustion engine, namely to control methods of supply of a fuel mixture and its components. The set task is solved due to the fact that the optimisation method of operation of an internal combustion engine involves functional relationship between electrical conductivity of the fuel mixture in a gap between electrodes of an ignition plug and combustion efficiency of the fuel mixture.

EFFECT: optimisation of operation of an internal combustion engine, which contributes to prolongation of engine serviceability, more complete combustion of fuel, reduction of fuel consumption and emission of exhaust gases.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICE combustion feedback systems. ICE (10) comprises multicylinder engine (12), load (14) engaged with engine via crankshaft (16), torque magnetic torque (24) arranged between engine (12) and load (14) and control module (26). Said torque magnetic transducer (24) can measure engine (12) torque to generate its output signal (28). Control module (26) is connected with torque magnetic transducer (24) to interact therewith. Control module (26) comprises data collection module (30) to receive torque signal (28) and to generate one or more control signals (32, 34, 36, 38) corresponding to one or more combustion parameters on the basis of torque signal (28). Data collection module (30) incorporates HF filter to generate detonation output signal configured to receive torque signal and to generate detonation output signal corresponding to engine one cylinder. Control module (26) can control one or more engine (12) control parameters on the basis of one or more combustion parameters for control over combustion in every engine (12) cylinder. Invention discloses the system design version.

EFFECT: higher accuracy of control.

16 cl, 6 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