CN101936244A - Internal combustion engine high pressure fuel system - Google Patents
Internal combustion engine high pressure fuel system Download PDFInfo
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- CN101936244A CN101936244A CN 201010174830 CN201010174830A CN101936244A CN 101936244 A CN101936244 A CN 101936244A CN 201010174830 CN201010174830 CN 201010174830 CN 201010174830 A CN201010174830 A CN 201010174830A CN 101936244 A CN101936244 A CN 101936244A
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Abstract
The present invention is an a kind of internal combustion engine high pressure fuel system.Its major character is: a, wherein the high pressure fuel in the accumulator (3) is sent to fuel dispenser (8) at regular time and quantity under a high pressure fuel power on/off magnet valve (7) control; B, fuel dispenser (8) are arranged in high pressure fuel power on/off magnet valve (7), and oil sprayer (12) is before afterwards; ECU in c, the native system (13) can realize the control of fuel injection pressure and injection time, and the oil sprayer in the native system (12) adopts traditional positive injector.This high pressure fuel system can realize the control to each cylinder injection time and fuel injection quantity, and can realize the repeatedly oil spout of each cylinder in a work cycle by the control of ECU (13) to a high pressure fuel power on/off magnet valve (7).High pressure fuel provided by the present invention system, realized freely controlling of fuel-injection pressure and injection time, and can in a work cycle, realize multi-injection, can satisfy internal-combustion engine maximum discharge standard-required, and have novel structure, simple, reliable operation, easy to maintenance and low cost and other advantages.
Description
Technical field:
The invention belongs to the high pressure fuel system that internal-combustion engine is used, be specially adapted to the Electrocontrolled high-pressure oil-fired system of use for diesel engine.
Technical background:
Energy-conservation is two big Driving forces of current internal-combustion engine technology development with reducing discharging, and petrol engine is also different owing to its research emphasis of the different decisions of combustion manner with diesel engine.Petrol engine adopts the three-effect catalysis technology can be with emission control in very low value, so that research emphasis is is energy-conservation; The research emphasis of diesel engine is how to reduce discharging.Developed country implements strict Abgasgesetz to internal-combustion engine since the early 1990s in last century in the world, and As time goes on more and more harsher.Mainly contain the U.S., Europe, Japan's three big emission standards at present in the world, along with the corresponding engine technology that requires of the raising of emission standard also is more and more advanced.The emission standard of China mainly adopts European equivalence margin, requires to be equivalent to Europe 1 standard execution in 2000, and is equivalent to Europe 2 standards execution in 2004.Issued GB 17691-2005 standard in 2005 again, the limit value and the test method of the exhaust contaminant of vehicular engine have been stipulated.The limit value and the pattern of state's 3,4,5 discharge phase that table 1 will be implemented for the medium and heavy diesel engine of China are checked and approved the time.
The medium and heavy diesel emission standard of table 1 China
| Stage | CO (g/kW.h) | HC (g/kW.h) | NOx (g/kW.h) | PM (g/kW.h) | Smoke intensity (m -1) | Pattern is checked and approved the |
| State | ||||||
| 3 | 2.1 | 0.66 | 5.0 | 0.1 | 0.8 | 2007.01.01 |
| |
1.5 | 0.46 | 3.5 | 0.02 | 0.5 | 2010.01.01 |
| |
1.5 | 0.46 | 2.0 | 0.02 | 0.5 | 2012.01.01 |
In order to satisfy state's 4 Abgasgesetzs or requirements at the higher level, to improve design to the critical system of diesel engine body on the one hand, further improve burning; Adopt technical sophistication, expensive equipment for after-treatment on the other hand again.Therefore, particularly important for the essential post-processing technology of the least possible usefulness for the improvement of diesel engine body critical system, and being diesel engine, high pressure fuel system wherein reaches the core technology place of more maximum discharge standard.In order to satisfy higher Abgasgesetz, for the general requirement of high pressure fuel system be: injection pressure height, injection pressure and injection time be controlled, in a work cycle multi-injection ability is arranged.
Therefore, each big diesel engine fuel jetting company of the world all drops into a large amount of scientific research personnel the high pressure fuel system is studied.The jet pressure of oil-fired system is from about the 100MPa of state's 1 discharge phase, along with the strict jet pressure of Abgasgesetz is more and more higher, basically the Abgasgesetz jet pressure that whenever steps to a new level will raise about 20MPa, and just the jet pressure that requires to 4 stages of state is about 160MPa.Except high injection pressure requires, in order to satisfy higher emission standard, the control of oil-fired system is required also more and more higher, require jet pressure, discharge time, fuel injection quantity etc. freely to control to each operating mode.Therefore the structural type of oil-fired system is also in continuous development, develops into electric control fuel oil jet system from the mechanical type oil-fired system at initial stage.And electric control fuel oil jet system has experienced three generations's development course up till now.First generation positioning control formula is by the control of Injection Pump oil mass pull bar being realized the control of fuel injection quantity, as electronic speed regulator; Second generation time-based control is controlled injection time by solenoid valve, as automatically controlled VE pump, electronically controlled unit pump etc.; The third generation is the pressure-time controlling type, can both control jet pressure, discharge time, as the Electrocontrolled high-pressure common rail fuel injection system.
For traditional pump-pipe-mouth system, because jet pressure depends on rotating speed and load, even peak injection pressure has satisfied requirement, the jet pressure when low speed and load is still lower, does not satisfy the control requirement of more maximum discharge standard.Wherein traditional mechanical in-line arrangement oil-fired system does not reach higher requirement for the control accuracy of injection time, fuel injection quantity yet; Though automatically controlled VE pump can freely be controlled injection time, the raising of jet pressure is restricted; Though the electronically controlled unit pump peak injection pressure can reach very high value, but the pressure during low speed and load is still lower, can not freely control jet pressure, and the further raising of jet pressure can bring the quick rising of Injection Pump driving torque, cause the consumed work of Injection Pump to raise.Therefore, will to satisfy more maximum discharge standard difficulty very big for traditional pump-pipe-mouth system.
Existing Electrocontrolled high-pressure common rail oil-fired system is separated pump oil process and injection process, and jet pressure is not subjected to can freely control about rotating speed, load; Generally adopt by the solenoid valve or piezo actuator control injection time and the fuel injection quantity that are assembled on the oil sprayer, realize the free adjustment of injection pressure and injection time.Simultaneously, in a work cycle, can realize repeatedly oil spout as required.Therefore, at present, the Electrocontrolled high-pressure common rail oil-fired system is to satisfy the better selection of maximum discharge standard.But, Electrocontrolled high-pressure common rail oil-fired system complex structure, the accuracy of manufacturing of requirement is very high, and especially the complex structure of injector assembly, difficulty of processing are very big, compare cost with traditional injection system and increase considerably.Owing to the high-precision requirement of common rail fuel combustion system, service condition is also harsh relatively, therefore, also has a lot of problems at present on working service in addition.
In order to adapt to the maximum discharge standard-required, U.S. Pat 6520153B1 has adopted the structure of central dispense device and accumulator to realize pre-spray, back spray in the prior art.Its structure is: at first through an electromagnetic valve, the fuel oil of 30MPa enters behind the accumulator high-voltage power supply as pre-spray, back spray through the fuel oil of high-pressure service pump pressurization, and the fuel oil that is higher than 30MPa directly enters the central dispense device, as the high-voltage power supply of main jet.There are a solenoid valve, this solenoid valve to be responsible for selecting two kinds of different high-voltage power supplies to spray for oil sprayer in the ingress of each oil sprayer.This patent helps high-voltage power supply stable of pre-spray and back spray, can realize pre-spray of accurately control and back spray, can satisfy the higher emissions standard-required.But the deficiency of this patent is as can be seen: directly pass through the oil sprayer that the central dispense device arrives respective cylinder for the main jet pressure source, so pressure can not freely be controlled; Simultaneously, the inlet at each oil sprayer has a corresponding solenoid valve to be responsible for selecting two kinds of different high-voltage power supplies to spray complex structure for oil sprayer.
U.S. Pat 5431142 has accumulator and fuel dispenser equally, reaches the control to injection pressure and time, can satisfy diesel engine higher emissions standard-required.Its structure is: the fuel oil through the high-pressure service pump pressurization enters accumulator, through first electromagnetic valve high pressure fuel is sent to distributor then, and distributes the oil sprayer that arrives respective cylinder to carry out oil spout through distributor, and the control through second solenoid valve makes oil spout stop again.The deficiency of this patent is to control the requirement that could satisfy injection timing, fuel injection quantity by the coordination of first solenoid valve and second solenoid valve as can be seen, and the control difficulty is big, reliability is relatively poor.
In addition, along with applying of automatically controlled high speed internal-combustion engine and multi-injection technology, a kind ofly can in a work cycle of internal-combustion engine, realize multiple switching, thereby accurately control the high pressure of fuel-injection pressure and injection time, at a high speed, the high frequency fuel solenoid valve has been public, is the prior art of a maturation.
Summary of the invention:
The purpose of this invention is to provide a kind of internal combustion engine high pressure fuel system, can satisfy more maximum discharge standard-required of diesel engine.This oil-fired system just can realize freely controlling of injection pressure and injection time when adopting traditional positive injector (oil sprayer that pump-pipe-nozzle system adopts), and it is in a work cycle, realize repeatedly oil spout as required, and simple in structure easy to implement.
The technical solution adopted in the present invention is that the more novel high-pressure oil-fired system of maximum discharge standard-required of internal-combustion engine can freely be controlled, be satisfied to a kind of injection pressure of exploitation, injection time, it mainly comprises high-pressure fuel-feed pump 1, accumulator 3, pressure transducer 4, high pressure fuel power on/off magnet valve 7, fuel dispenser 8, high-pressure oil pipe 11, oil sprayer 12, ECU13 etc., it is characterized in that: a, wherein the high pressure fuels in the accumulator 3 are sent to fuel dispenser 8 at regular time and quantity under 7 controls of a high pressure fuel power on/off magnet valve; B, fuel dispenser 8 are arranged in after the high pressure fuel power on/off magnet valve 7 before the oil sprayer 12; ECU13 in c, the native system can realize the control of fuel injection pressure and injection time, and the oil sprayer 12 in the native system adopts traditional positive injector.(see figure 1)
The difference of the technical solution adopted in the present invention and prior art is: existing high-pressure common rail oil-fired system all adopts every cylinder to adorn an electric-controlled fuel injector, integrated solenoid valve or piezo actuator on this electric-controlled fuel injector, press the electric-controlled fuel injector output control pulse of each cylinder working order by the ECU (Electrical Control Unit) of internal-combustion engine, directly control the fuel injection quantity and the injection time of each cylinder injector to each cylinder.And in novel fuel of the present invention system, do not adopt common electric-controlled fuel injector and adopt positive injector used in traditional pump-pipe-nozzle system.Its principle is equivalent to the control valve in the electric-controlled fuel injector is become two parts with mechanical-hydraulic oil spout isolation of components, and control valve of each cylinder merged become the public control valve parts of motor, it is exactly the high pressure fuel power on/off magnet valve 7 among the present invention.For example in 4 cylinder machines, this solenoid valve has 4 times the high pressure fuel in the accumulator 3 is sent in the fuel dispenser 8 the center high-pressure oil duct 15 on the distribution rotor 9 at regular time and quantity (for simple and clear in each work cycle, below do not consider multi-injection, main injection only has been described).Press the hydraulic injection device fuel feeding of each cylinder working order by fuel dispenser then to each cylinder.Spray time beginning that high pressure fuel power on/off magnet valve 7 is opened at every turn and delayed injection time (corresponding to fuel injection quantity) are then determined according to the input signal of sensor and the program of internal reservoir by ECU (Electrical Control Unit) ECU13, have realized the flexible control to fuel injection pressure and injection time.Both adopt the hydraulic injection device thereby reached, realized the target of electronic control function again.
The present invention compares the beneficial effect that is had with prior art: because high pressure fuel provided by the invention system, realized freely controlling of injection pressure and injection time, therefore compared and to satisfy higher emission standard with traditional pump-pipe-mouth oil-fired system; Compare with existing high-pressure common rail oil-fired system, satisfying under the equal emission standard condition, owing to only adopt a high pressure fuel power on/off magnet valve 7 and use traditional positive injector 12 (oil sprayer that pump-pipe-nozzle system adopts), therefore novel structure, simple, reliable operation, easy to maintenance, and cost is low.
Description of drawings:
Fig. 1 is an internal combustion engine high pressure fuel system schematic of the present invention.
Fig. 2 is an internal combustion engine high pressure fuel system architecture schematic representation of the present invention
Fig. 3 is conventional pump-pipe-mouth oil-fired system schematic representation.
Fig. 4 is existing high-pressure common rail oil-fired system schematic representation.
Label declaration: 1. high-pressure fuel-feed pump, 2. one-way valve, 3. accumulator, 4. pressure transducer, 5. oil transfer pump, 6. the inlet metering valve, 7. high pressure fuel power on/off magnet valve, 8. fuel dispenser, 9. distribution rotor, 10. distribute sleeve, 11. high-pressure oil pipes, 12. oil sprayers, 13.ECU, 14. fuel distribution holes, 15. center high-pressure oil ducts, 16. oil outlets, 17. common-rail injector assemblies, 18. flow-limiting valves, 19. fuel tanks.
Embodiment:
Describe specific structural features of the present invention and working condition in detail below in conjunction with accompanying drawing.
Fig. 1 is an internal combustion engine high pressure fuel system schematic of the present invention.
The structural representation of internal combustion engine high pressure fuel of the present invention system that shown in Figure 2 is.
In Fig. 1 and Fig. 2, have an inlet metering valve 6 on the high-pressure fuel-feed pump 1, perhaps adorn the flow that a high-pressure fuel-feed pump solenoid valve is used to regulate high-pressure fuel-feed pump at every cover pump element place of high-pressure fuel-feed pump 1.Fuel oil is sucked from fuel tank 19 by oil transfer pump 5, and by entering high-pressure service pump 1 after inlet metering valve 6 meterings by ECU13 control, high-pressure service pump is pressurized to needed pressure with low-voltage fuel, by one-way valve 2 high pressure fuel is sent to accumulator 3 then.Pressure transducer 4 perception fuel pressure sizes on the accumulator 3, make judgement and feed back to inlet metering valve 6 by ECU13, whether decision will increase or reduce the requirement that fuel delivery satisfies accumulator 3 pressure stabilitys, and accumulator 3 plays voltage stabilizing and effect pump is oily and the injection process isolation like this.The generation of high pressure oil and pressure accumulation technology are identical with existing high-pressure common rail oil-fired system (see figure 4).
High pressure oil in the accumulator 3 is controlled high pressure fuel timing, quantitative flow to fuel dispenser 8 by a high pressure fuel power on/off magnet valve 7 by ECU13 control.Fuel dispenser 8 is arranged in after the high pressure fuel power on/off magnet valve 7, before the oil sprayer 12, form by distribution rotor 9, distribution sleeve 10 and distributor body, distribution rotor 9 is by the camshaft actuated of high-pressure fuel-feed pump 1, the center high-pressure oil duct 15 of distribution rotor 9 is communicated with high pressure fuel power on/off magnet valve 7, and distribution rotor 9 has a fuel distribution hole 14 and center high-pressure oil duct 15 to link up at circumferencial direction; On the circumference that distributes sleeve 10, the oil outlet 16 of counting equal number with cylinder of internal-combustion engine is arranged, when the dispensing orifice on the distribution rotor 9 14 when certain oil outlet 16 on distributing sleeve 10 communicates, high pressure fuel is just through a delivery connection, high-pressure oil pipe 11 and oil sprayer 12 oil spouts on the fuel dispenser 8.As can be seen, by between oil sprayer 12 and high pressure fuel power on/off magnet valve 7, adding fuel dispenser 8, make the present invention when only adopting traditional positive injector 12, just can realize freely controlling of fuel injection pressure and injection time, realize the identical function of existing high-pressure common rail oil-fired system.
The function of the high pressure fuel power on/off magnet valve 7 among the present invention is identical with the function of the solenoid valve of existing high-pressure common rail oil-fired system oil sprayer, is that high pressure fuel power on/off magnet valve 7 of the present invention is not installed on the oil sprayer, and is mounted on the fuel dispenser 8.In addition, the frequency of okperation of high pressure fuel power on/off magnet valve 7 of the present invention is than the height of existing high-pressure common rail oil-fired system fuel injector magnetic system.The solenoid valve of the oil sprayer of existing high-pressure common rail oil-fired system, because prior art is fuel injector magnetic system of every cylinder, therefore, fuel injector magnetic system is only opened once for the oil sprayer of a certain cylinder or several in a work cycle of motor.But, the present invention has only a high pressure fuel power on/off magnet valve 7, be responsible for control to all oil sprayer injection processes, therefore, as can be seen in a work cycle of motor, the work number of times of high pressure fuel power on/off magnet valve 7 of the present invention is identical with the cylinder number at least, and its work number of times more will increase when adopting multi-injection.Simultaneously as can be seen, the present invention is by the control of ECU13 to a high pressure fuel power on/off magnet valve 7, just can realize the control to each cylinder injection time and fuel injection quantity; And can realize the repeatedly oil spout of each cylinder in a work cycle, make that therefore system architecture is simple, each cylinder oil spout high conformity.
Structure, the principle of the distributor in fuel dispenser 8 of the present invention and the existing distribution rotor formula Injection Pump are identical.
The control strategy of ECU13 of the present invention is identical with existing high-pressure common rail oil-fired system.Internal combustion engine high pressure fuel of the present invention system stores among the ECU13 wherein according to by the signal of engine speed sensor, temperature transducer, throttle position switch, pressure transducer 4 inputs the fuel-injection pressure and the injection time of oil sprayer 12 being controlled required program; ECU13 realizes to inlet metering valve 6 and high pressure fuel power on/off magnet valve 7 output control signals by ECU13 the control function of oil sprayer 12.
Internal combustion engine high pressure fuel of the present invention system can realize the accurate control to each cylinder injection time of internal-combustion engine and fuel injection quantity by the control to a high pressure fuel power on/off magnet valve 7.Internal combustion engine high pressure fuel of the present invention system also can realize the repeatedly oil spout of each cylinder of internal-combustion engine in a work cycle by the control to a high pressure fuel power on/off magnet valve 7.
Has an inlet metering valve 6 on the high-pressure fuel-feed pump 1 of internal combustion engine high pressure fuel of the present invention system, its effect is: the fuel pressure numerical value that the ECU13 in the system obtains according to the pressure transducer on the accumulator 34, make judgement and 6 increases of control inlet metering valve or reduce the requirement that fuel delivery satisfies accumulator 3 pressure stabilitys, accumulator 3 plays voltage stabilizing and effect pump is oily and that injection process is isolated like this.In like manner, internal combustion engine high pressure fuel of the present invention system also can be on high-pressure fuel-feed pump 1, by on every cover pump element, using the mode of a high-pressure service pump solenoid valve, realize increasing or reducing the function of fuel delivery, thereby satisfy the requirement of accumulator 3 pressure stabilitys.The high-pressure fuel-feed pump 1 of internal combustion engine high pressure fuel of the present invention system both can adopt in-line arrangement, equally also can adopt the rotator type high-pressure fuel-feed pump.
The present invention compares with above-mentioned patent US6520153B1 as can be seen and since high pressure fuel all through after the accumulator voltage stabilizing just for injection, so jet pressure can free adjustment be controlled; And only control high pressure fuel with a high pressure fuel power on/off magnet valve 7 and regularly, quantitatively lead to fuel dispenser 8, and the oil sprayer 12 that is sent to respective cylinder carries out oil spout, so novel structure, simple.US5431142 compares with patent because only with a high pressure fuel power on/off magnet valve 7 control high pressure fuel regularly, quantitative injection, so novel structure, simply be easy to control.
Fig. 3 is traditional pump-pipe-mouth oil-fired system schematic representation, the high pressure oil that this system high pressure oil-feeding pump 1 produces is guided oil sprayer 12 into through one-way valve 2 and high-pressure oil pipe 11 and is carried out oil spout, so injection pressure and rotating speed, load are relevant, the low requirement that can not satisfy the maximum discharge standard of jet pressure during low speed and load, and injection time can not accurately be controlled.In addition, even can realize the better electronically controlled unit pump of control of injection time, jet pressure is still lower during low speed and load, can not freely control jet pressure.
Fig. 4 is existing high-pressure common rail oil-fired system schematic representation, the high pressure fuel that this system high pressure pump 1 produces enters accumulator 3 through one-way valve 2 earlier, flow into high-pressure oil pipe 11 by the flow-limiting valve 18 that is assembled on the accumulator 3 then, guide each cylinder fuel oil power on/off magnet valve 7 again into, lead to common-rail injector assembly 17 at last by ECU13 control.Therefore, the high-pressure common rail oil-fired system can freely be controlled injection pressure and time, and can realize multi-injection as required in a circulation.But compare with the present invention, its injector assembly 17 is more complex, and difficulty of processing improves greatly, and every cylinder all will adopt a solenoid valve, will guarantee that so the conforming difficulty of each cylinder oil spout just increases.
In sum, the present invention is a kind of creative invention of internal combustion engine high pressure fuel system, when adopting traditional positive injector (fuel injector that pump-pipe-nozzle system adopts), just freely controlling of injection pressure and injection time can be realized, more maximum discharge standard-required of internal combustion engine can be satisfied. Compare with traditional pump-pipe-mouth fuel system, realized freely controlling injection pressure and injection time; Compare with existing high-pressure common-rail fuel system, reached the identical control function to injection pressure, injection time, injection flexibility. Simultaneously the present invention also has novel structure, simple, reliable operation, easy to maintenance, the advantage such as reduce cost, and is a kind of novel internal combustion engine high pressure fuel system.
Claims (7)
1. internal combustion engine high pressure fuel system, it mainly comprises high-pressure fuel-feed pump (1), accumulator (3), pressure transducer (4), high pressure fuel power on/off magnet valve (7), fuel dispenser (8), high-pressure oil pipe (11), oil sprayer (12), ECU (13) etc., it is characterized in that:
A, wherein the high pressure fuel in the accumulator (3) is sent to fuel dispenser (8) at regular time and quantity under a high pressure fuel power on/off magnet valve (7) control;
B, fuel dispenser (8) are arranged in high pressure fuel power on/off magnet valve (7), and oil sprayer (12) is before afterwards;
ECU in c, the native system (13) can realize the control of fuel injection pressure and injection time, and the oil sprayer in the native system (12) adopts traditional positive injector.
2. internal combustion engine high pressure fuel according to claim 1 system, it is characterized in that having an inlet metering valve (6) on the high-pressure fuel-feed pump (1), perhaps adorn the flow that a high-pressure fuel-feed pump solenoid valve is used to regulate high-pressure fuel-feed pump at every cover pump element place of high-pressure fuel-feed pump (1).
3. internal combustion engine high pressure fuel according to claim 1 system, it is characterized in that wherein fuel dispenser (8) is made up of distribution rotor (9), distribution sleeve (10) and distributor body, distribution rotor (9) is by the camshaft actuated of high-pressure fuel-feed pump (1), the center high-pressure oil duct (15) of distribution rotor (9) is communicated with high pressure fuel power on/off magnet valve (7), and distribution rotor (9) has a fuel distribution hole (14) and center high-pressure oil duct (15) to link up at circumferencial direction; On the circumference that distributes sleeve (10), the oil outlet (16) of counting equal number with cylinder of internal-combustion engine is arranged, when the dispensing orifice (14) on the distribution rotor (9) with distribute sleeve (10) on certain oil outlet (16) when communicating, high pressure fuel is just through a delivery connection, high-pressure oil pipe (11) and oil sprayer (12) oil spout on the fuel dispenser (8).
4. internal combustion engine high pressure fuel according to claim 1 system is characterized in that the control to a high pressure fuel power on/off magnet valve (7) by ECU (13), can realize the control to each cylinder injection time and fuel injection quantity.
5. internal combustion engine high pressure fuel according to claim 1 system is characterized in that the control to a high pressure fuel power on/off magnet valve (7) by ECU (13), can realize the repeatedly oil spout of each cylinder in a work cycle.
6. internal combustion engine high pressure fuel according to claim 1 system is characterized in that high-pressure fuel-feed pump (1) is in-line arrangement or rotator type high-pressure fuel-feed pump.
7. internal combustion engine high pressure fuel according to claim 1 system is characterized in that storing among the ECU (13) wherein according to by the signal of engine speed sensor, temperature transducer, throttle position switch, pressure transducer (4) input the fuel-injection pressure and the injection time of oil sprayer (12) being controlled required program; ECU (13) realizes to inlet metering valve (6) and high pressure fuel power on/off magnet valve (7) output control signal by ECU (13) the control function of oil sprayer (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010174830 CN101936244A (en) | 2010-04-29 | 2010-04-29 | Internal combustion engine high pressure fuel system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010174830 CN101936244A (en) | 2010-04-29 | 2010-04-29 | Internal combustion engine high pressure fuel system |
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| CN101936244A true CN101936244A (en) | 2011-01-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047059A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Electronic-control fuel jetting system of engine |
| CN105386914A (en) * | 2015-12-11 | 2016-03-09 | 中国北方发动机研究所(天津) | Double-rail high-pressure common-rail system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5431142A (en) * | 1993-02-18 | 1995-07-11 | Robert Bosch Gmbh | Fuel injection system for internal combustion engines |
| CN1055745C (en) * | 1993-05-06 | 2000-08-23 | 卡明斯发动机公司 | Compact high performance fuel syste with accumulator |
| US6520153B1 (en) * | 1999-08-20 | 2003-02-18 | Robert Bosch Gmbh | Fuel injection system for an internal combustion engine |
| CN1786457A (en) * | 2005-09-19 | 2006-06-14 | 童维友 | Preset high pressure distributing type fuel oil injecting pump |
-
2010
- 2010-04-29 CN CN 201010174830 patent/CN101936244A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5431142A (en) * | 1993-02-18 | 1995-07-11 | Robert Bosch Gmbh | Fuel injection system for internal combustion engines |
| CN1055745C (en) * | 1993-05-06 | 2000-08-23 | 卡明斯发动机公司 | Compact high performance fuel syste with accumulator |
| US6520153B1 (en) * | 1999-08-20 | 2003-02-18 | Robert Bosch Gmbh | Fuel injection system for an internal combustion engine |
| CN1786457A (en) * | 2005-09-19 | 2006-06-14 | 童维友 | Preset high pressure distributing type fuel oil injecting pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047059A (en) * | 2013-01-10 | 2013-04-17 | 无锡开普机械有限公司 | Electronic-control fuel jetting system of engine |
| CN105386914A (en) * | 2015-12-11 | 2016-03-09 | 中国北方发动机研究所(天津) | Double-rail high-pressure common-rail system |
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Open date: 20110105 |