Vehicle engine control device

FIELD: transportation.

SUBSTANCE: vehicle engine control device with an electric fuel pump, a fuel pressure sensor, an electric motor starting the internal combustion engine and an electric storage device comprises an electronic control unit configured to: control the electric feeding pump based on a value determined by the fuel pressure sensor; control the electric motor starting the internal combustion engine and control the electric feeding pump and the electric motor. The electric storage device supplies electric power to the electric motor, giving preference to the electric feeding pump when the first electric power is less than the determined threshold value. The first electric power is the power that the storage device is capable of producing at the engine starting moment.

EFFECT: improving the engine starting characteristics.

5 cl, 7 dwg

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: in a control method of a motor-generator, in any of six sectors of -30+330 electrical degrees, in case of negative values of deviations of present values of currents from the specified ones and in case of a positive sign of deviation of the present current value from the specified one along a longitudinal axis and a negative sign of deviation of current along a cross axis, signs of all the phase voltages are set as equal.

EFFECT: reduction of additional losses in a power converter.

4 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: system comprises one inverter and one electric machine, operating as a start or as a generator, during the start the inverter provides for development of a rotating electromagnetic field and rotation of a rotor in accordance with any available program, and in the generation mode the inverter operates as a rectifier and a step-up controller of DC voltage. Its transition into the generation mode is realised with a switch of control units power supply by a signal of an electric machine rotor rpm controller, afterwards in turns, by half-cycles, power keys of the inverter are controlled from a metering element of output voltage via two width-pulse modulators.

EFFECT: stabilisation of voltage on loads with reduction of their weight and cost of a system.

1 dwg

FIELD: electricity.

SUBSTANCE: method and device to control starter - generator is proposed by the invention. Both method and device are based on the synchronous machine operation using electromagnetic excitation. The claimed method and device ensure machine operation both in starter and generator modes with minimum copper losses and minimize additional (switching) losses in the machine and power converter.

EFFECT: simple design of device, improved reliability and reduced cost while preserving all functional properties and advantages.

2 cl, 2 dwg

Starter-generator // 2321765

FIELD: automotive industry.

SUBSTANCE: starter-generator comprises two-phase rectifying inductive machine with electromagnetic asymmetry, transistor commutator made of the minimum number of switches. The main winding of each of two phases is connected with the power source through a transistor of the inverter. Each recuperating winding of two phases is connected with the power source through a diode of inverter.

EFFECT: simplified structure and reduced losses.

3 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to electrical equipment of vehicles and it can be used for modification of mainline and shunting diesel locomotives of all types. According to invention, proposed starting system of diesel locomotive contains storage battery, device to cut off battery from locomotive electric circuit, electric starter, contacts of starting contactors, capacitive energy stores device and diode. Starter-generator or traction generator is used as electric starter. Capacitive energy storage device is made in form of parallel or parallel-series connected two-plate capacitors. Current-limiting resistor placed in charging circuit of capacitive energy storage device is shunted by diode at flow of energy accumulator discharge current. Proposed starting system is furnished with additional contactor with winding and making contacts first of which is placed in charging circuit of capacitive energy storage device, and control relay with winding and breaking contact. Winding of control relay is connected to capacitive energy storage device through contact of starting contactor. Winding of additional contactor is connected to locomotive circuit through series-connected breaking contact of control relay, first switch with breaking contact and second switch with making contact, second making contact of additional contactor being connected in parallel to the latter.

EFFECT: prevention of charging of capacitive energy storage device to higher voltage generated by locomotive charging generator after starting of diesel engine and keeping of energy storage device between startings at low voltage and, as a result, improved reliability and increased service life of starting system.

3 cl, 1 dwg

FIELD: electric engineering, possible use in autonomous objects, in particular, automobiles, for generation of electric energy and launching driving motor.

SUBSTANCE: energy plant with asynchronous starter-generator contains asynchronous machine, primary engine, main and additional accumulators of electric energy, current indicator of main electric energy accumulator, gate transformers. Direct current outputs of first gate transformer are directly connected to consumers of direct current of first voltage level. Additional electric energy accumulator is connected to consumers of direct current of second voltage level and through third gate transformer of direct current to direct current is connected to unipolar clamps of first gate transformer.

EFFECT: possible generation of two levels of voltage for consumers of direct current and increase of efficiency in generator mode.

2 cl, 1 dwg

Starter-generator // 2270931

FIELD: electrical engineering; vehicles with internal combustion engines.

SUBSTANCE: according to invention, proposed starter-generator is made on base of inverted contactless electric machine. Stator is rigidly connected with housing of internal combustion engine by means of fastening holes in gearbox through first construction member which serves simultaneously as holder of oil seal of crankshaft nose and sensitive elements of pickups providing information on current position of rotor. Bearing is installed in first construction member on inner surface of which second construction member with fitted-on rotor of starter-generator is installed. Second construction member is connected with nose of crankshaft through third construction member being standard flywheel of internal combustion engine rigidly connected with outer surface of second construction member through fourth construction member.

EFFECT: optimization of design of starter-generator with account of necessity of building-in into power set of automobile without modification of members of internal combustion engine and gearbox and installation of pickups of information of current position of rotor.

6 dwg

FIELD: engine manufacture; device for connecting generator, such as ac one set in motion by prime mover, to ac circuit.

SUBSTANCE: proposed method for connecting ac generator set in motion by prime mover and installed for current generation between two contacts in ac circuit includes insertion of passive member between ac generator contacts whose resistance is such that prime mover setting in motion ac generator is motionless and cannot make this generator produce current; initialization of prime mover so as to place it in position in which it can set generator in motion at frequency of ac current flowing in circuit meant for connection to generator; and connection of generator contacts to ac circuit to make generator start prime mover. Method for disconnecting ac generator includes connection of passive member in parallel with ac generator set in motion by prime mover. Passive member resistance is low enough to pass current exceeding that making it impossible to set in motion this generator by prime mover so that the latter stops running and generator is disconnected from ac circuit. Generator connecting device has passive member connected in circuit in parallel with generator and disconnected from circuit, its resistance being sufficiently low to make it impossible for prime mover to set generator in motion for producing current bypassing passive member during its parallel connection and switch designed to connect ac generator to ac circuit. Device for disconnecting ac generator has passive member connected in circuit in parallel with this generator. Passive member resistance is sufficiently low to make it impossible for prime mover to set generator in motion for producing current bypassing parallel-connected passive member and switch designed for disconnecting ac generator from ac circuit.

EFFECT: facilitated procedure and simplified design of device; enhanced reliability, facilitated use, and reduced cost of device.

24 cl, 10 dwg

FIELD: engine engineering.

SUBSTANCE: device comprises asynchronous motor with the short-circuited rotor and shaping unit that generates specified values of the components of the vector of the stator current in the frequency-current control system.

EFFECT: reduced losses.

2 cl, 3 dwg, 1 ap

Starter-generator // 2268391

FIELD: electrical engineering.

SUBSTANCE: starter-generator is made on the basis of the inverse contactless electrical machine. The stator is rigidly connected with the housing of the internal combustion engine through fastening openings of the gear box and first structural member which also represents a holder of the sealing gland for the tip of the crankshaft and sensors of the pickups for receiving information on the current position of the rotor. The first structural member is set on the outer surface of the bearing whose inner side is provided with the rotor of the starter-generator through the second structural member. The rotor of the starter-generator is connected with the face surface of the tip of the crankshaft of the internal combustion engine through the third structural member and the clutch of the gear box. The third structural member is connected with the face surface of the tip of the crankshaft through the fastening members with damping spacers.

EFFECT: improved structure.

1 cl, 5 dwg

Fuel atomiser // 2555066

FIELD: heating.

SUBSTANCE: invention refers to a fuel atomiser. Fuel atomiser (10) for fuel injection to combustion chamber (11) in an internal combustion motor primarily for common rail system is described, featuring valve element (27) controlling injection, travelling between closed position and open position where it opens atomising orifice system (25), and controlled by solenoid armature system (49; 80) via connective cavity (70) filled with pressurised work medium. According to the invention, solenoid armature system (49; 80) features at least two armatures (55, 55a, 55b, 56, 56a, 56b, 81, 86, 92, 94, 95, 97, 101, 108, 108a) moving against each other and protruding to connecting plane (70) by their end surfaces (65, 65c, 66, 66c).

EFFECT: distribution of force transferred by solenoid coil to solenoid armature system among both armatures so that the first armature performs mostly lifting of valve element controlling injection from its seat while the other armature ensures rather long required travel of valve element controlling injection.

12 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: application gives description to a pilot valve having a bush-like shutoff element which is set so that to be able of axial displacement at a guiding rod with one end of the latter resting against a stationary part. The other end of the guiding rod is periodically loaded by high pressure in the course of fuel nozzle operation. Such high pressure is used at the stage of fuel nozzle testing for the purpose of plastic deformation of the stationary part resulting in a recess-like backup indentation for the other end of the guiding rod.

EFFECT: improved design.

8 cl, 1 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: engines and pumps.

SUBSTANCE: fuel injector has needle 4 that displace in lengthwise direction to control opening of, at least, one injection orifice 5. Control cavity 17 is connected to high-pressure circuit. Pressure in said cavity acts, at least, indirectly, to needle 4 and control valve 23 with needle 26. Seat 26 is arranged radially between high-pressure valve cavity 22 communicated with control cavity 17 and low-pressure valve cavity 24. Moving valve element 25 confines radially high-pressure valve cavity 22 to interact with seat 26. Control valve element 25 has annular ledge 29 extending radially into high-pressure valve cavity 22. Annular ledge 29 of extending surface faces seat 26 to interact therewith and to make sealing surface. Control valve element 25 represents a valve sleeve. Note here that high-pressure valve cavity 22 is made inside valve sleeve 25.

EFFECT: reduced wear.

5 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: control valve for a fuel injector includes control sleeve (25) and injector part (5). Control sleeve (25) restricts increased pressure cavity (26; 26') and is installed with possibility of being moved in its longitudinal direction. Control sleeve (25) is provided on end surface with sealing surface (27; 27'; 27") that interacts with seat (28; 28'; 28") made on injector part (5). Groove (24; 24') is made in injector part (5) on the side facing cavity (26; 26'). Control sleeve (25) and groove (24; 24') are made so that their deformation under action of pressure in cavity (26; 26') leads at least to approximately equal offset of seat (28; 28'; 28") and sealing surface (27; 27'; 27").

EFFECT: reduction of the wear of the valve in the seat zone.

13 cl, 5 dwg

Atomiser // 2469206

FIELD: engines and pumps.

SUBSTANCE: proposed atomiser comprises control valve 18. Said valve controls fuel flow via drain channel 14 made in atomiser part 6. Fuel flows from control chamber 5 confined by axially displacing valve element 2 toward zone 12 of atomiser 1 at low pressure of said zone. Valve 18 comprises atomiser part 6 including valve bush 17. The latter is arranged to displace directly inside guide element 26. Said element represents a separate element secured to atomiser part 6 with interference fit on taper section. Said guide element 26 is provided with transverse hole 31, 32 for heat removal from drain channel 14.

EFFECT: simplified design.

9 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine at stay after cold starting can change its combustion mode to homogeneous combustion mode or that based on fuel charge layer-by-layer distribution. Working range of combustion based on layer-by-layer fuel charge distribution at vehicle stay after cold starting is expanded relative to that of homogeneous combustion at stay after cold starting as vehicle inclination angle decreases.

EFFECT: expanded working range, negative pressure of sucked air for required brake characteristic, decreased HC content at stay after cold starting.

7 cl, 6 dwg

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