CN102691604A - Multi-stage boosting electric-control common-rail oil injection system - Google Patents
Multi-stage boosting electric-control common-rail oil injection system Download PDFInfo
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- CN102691604A CN102691604A CN2012101631365A CN201210163136A CN102691604A CN 102691604 A CN102691604 A CN 102691604A CN 2012101631365 A CN2012101631365 A CN 2012101631365A CN 201210163136 A CN201210163136 A CN 201210163136A CN 102691604 A CN102691604 A CN 102691604A
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Abstract
The invention aims to provide a multi-stage boosting electric-control common-rail oil injection system comprising an engine oil tank, a high-pressure engine oil pump, an oil tank, an oil pump, a multi-stage boosting control portion, an electric-control oil injector, an engine oil common-rail pipe, an oil common-rail pipe, a pressure sensor, a relief valve and an oil inlet pipe. The high-pressure engine oil pump is connected with the engine oil tank and the engine oil common-rail pipe, the oil pump is connected with the oil tank and the oil common-rail pipe, the multi-stage boosting control portion is connected with the engine oil common-rail pipe and the oil common-rail pipe and is connected with the electric-control oil injector through the oil inlet pipe, the electric-control oil injector is connected with the oil common-rail pipe, the pressure sensor and the relief valve are mounted on the engine oil common-rail pipe, and the engine oil common-rail pipe is communicated with the engine oil tank through the relief valve. The oil injection pressure of the multi-stage boosting electric-control common-rail oil injection system can be controlled flexibly and quickly, the defects of large capacity and slow pressure changing speed of common-rail pipes of existing large and medium-size diesel engines are overcome, oil injection can be at different speeds, and economy and dynamic performance of the diesel engine can be effectively improved, and harmful emission is reduced.
Description
Technical field
What the present invention relates to is a kind of motor, specifically the injection system of motor.
Background technique
Along with the increasingly stringent of diesel engine electric controlled fuel injection technology rapid development and boat diesel engine Abgasgesetz, adopt the new electronic control injection system to become the inexorable trend of boat diesel engine development.The electric-controlled co-rail injection system can be realized Fuel Injection Quantity for Diesel and fuel injection characteristic control fast, accurately, neatly; Effectively improve the economic performance and the power performance of diesel engine; Significantly reduce simultaneously noxious emission; Be one of current the most advanced electric control fuel oil jet system, on boat diesel engine, obtained using widely.Because big-and-middle-sized diesel engine cycle fuel injection quantity peculiar to vessel is big; For being provided, enough fuel injection quantitys stabilize the pressure surge that causes in fuel feeding and the injection process simultaneously; Require to be equipped with on the diesel engine common rail pipe of big volume; It is slow to cause the common rail pipe internal pressure to set up speed thus, and can increase the difficulty and the cost of permanent high pressure sealing in the common rail pipe simultaneously.Therefore the fuel injection system of many big-and-middle-sized diesel engines peculiar to vessel adopts supercharging type electric-controlled co-rail injection system usually; Common rail pipe in the system is no longer put aside and directly is used to the high pressure fuel that sprays; But be used to accumulate lower fuel oil of pressure or hydraulic work oil; Utilize charged piston according to a certain percentage the fuel pressure of accumulating in the common rail pipe to be amplified, the fuel oil that is about to spray is carried out supercharging, supply with electric-controlled fuel injector and be used for spraying.
Be applied to the supercharging type electric-controlled co-rail injection system of the big-and-middle-sized diesel engine of boats and ships; Can improve the speed of setting up of rail pressure to a certain extent, effectively reduce the difficulty and the cost of permanent high pressure sealing in the common rail pipe, and can realize high-pressure injection; But still have the deficiency part, need further to improve.
1, for the supercharging type electric-controlled co-rail injection system of big-and-middle-sized diesel applications peculiar to vessel, though the fuel pressure in the common rail pipe is able to significantly reduce, the circulating fuel injection quantity of big-and-middle-sized diesel engine is big; For enough fuel injection quantitys are provided and reduce the interference of pressure surge as far as possible to injection process; The volume of common rail pipe is still bigger, and fuel oil is many in the rail, and it is long that rail pressure changes lag time; System can't realize rail pressure is carried out fast; Control flexibly, the rail pressure of system can't change fast, is generally a determined value.Supercharging type electric-controlled co-rail injection system only has a charged piston simultaneously, and for the common rail pressure of confirming, after the process charged piston carried out a certain proportion of amplification to fuel pressure, system only can spray into fuel oil in the cylinder with a certain definite jet pressure.Therefore applied supercharging type electric-controlled co-rail injection system on current big-and-middle-sized diesel engine peculiar to vessel; Be difficult to realize rail pressure fast and flexible ground is controlled; Thereby can't realize flexible control to injection pressure; Can only under single jet pressure, accomplish the course of injection of fuel oil, be difficult to satisfy the requirement to different fuel-injection pressures under different rotating speeds and operating mode of big-and-middle-sized diesel engine.
2, applied supercharging type electric-controlled co-rail injection system only disposes a charged piston on the current big-and-middle-sized diesel engine peculiar to vessel; Under the common rail pressure of confirming; Can't be implemented in a course of injection injection rate is regulated; Be difficult to further improve the jet performance of electric-controlled co-rail injection system, limited further optimization motor.
Summary of the invention
The object of the present invention is to provide and be applied to realize on the big-and-middle-sized diesel engine peculiar to vessel multistage pressurized electrically controlled co-rail oil injection system that fuel-injection pressure and injection rate are controlled flexibly.
The objective of the invention is to realize like this:
The multistage pressurized electrically controlled co-rail oil injection system of the present invention; It is characterized in that: comprise sump, high pressure lubricating oil pump, fuel tank, fuel pump, multistage pressurization control part, electric-controlled fuel injector, machine oil common rail pipe, fuel common-rail pipe, pressure transducer, pressure-limit valve, oil inlet pipe; High pressure lubricating oil pump junctor fuel tank and machine oil common rail pipe; Fuel pump connects fuel tank and fuel common-rail pipe, and multistage pressurization control partly connects machine oil common rail pipe, fuel common-rail pipe and passes through oil inlet pipe connection electric-controlled fuel injector, and electric-controlled fuel injector connects the fuel common-rail pipe; Setting pressure sensor and pressure-limit valve on the machine oil common rail pipe, the machine oil common rail pipe is communicated with sump through pressure-limit valve.
The present invention can also comprise:
1, described multistage pressurization control partly comprises multistage pressurization control unit; Multistage pressurization control unit comprises two-position three way magnetic valve, charged piston, in line check valve, return check valve; The charged piston top is provided with charged piston top hydraulic pressure cavity; The charged piston below is provided with charged piston below hydraulic pressure cavity; Charged piston hydraulic control chamber is set in the charged piston, and first charged piston top hydraulic pressure cavity connects machine oil common rail pipe and sump through first two-position three way magnetic valve, and the first charged piston control chamber connects the fuel common-rail pipe, connects fuel tank through return check valve through first in line check valve respectively; First charged piston below hydraulic pressure cavity connects second charged piston top hydraulic pressure cavity and oil inlet pipe through second two-position three way magnetic valve; The second charged piston control chamber connects the fuel common-rail pipe, connects fuel tank through return check valve through second in line check valve respectively, and second charged piston below hydraulic pressure cavity connects oil inlet pipe, and the 3rd in line check valve is communicated with fuel common-rail pipe and oil inlet pipe.
2, the pressure ratio of described first charged piston and second charged piston is respectively 6 and 2.
3, described multistage pressurization control unit also comprises the charged piston Returnning spring, and the charged piston Returnning spring is installed in the charged piston.
4, described electric-controlled fuel injector comprises bi-bit bi-pass high-speed electromagnetic valve, control piston, needle-valve, oil holding slot; Control piston connects needle-valve, and the control piston top is provided with pressure control cavity, and pressure control cavity connects fuel tank through the bi-bit bi-pass high-speed electromagnetic valve; Pressure control cavity also is communicated with oil inlet pipe; Between pressure control cavity and the bi-bit bi-pass high-speed electromagnetic valve fuel-displaced throttle orifice is set, the meter in hole is set between pressure control cavity and the oil inlet pipe, oil holding slot is arranged on the needle-valve place and is connected with oil inlet pipe.
5, described electric-controlled fuel injector also comprises the needle-valve Returnning spring, and the needle-valve Returnning spring is installed in the needle-valve top.
6, described multistage pressurization control unit and electric-controlled fuel injector are formed an oil spout unit, and the quantity of oil spout unit equals the quantity of engine cylinder.
Advantage of the present invention is: the present invention is through the cooperation control of solenoid valve; Can be flexibly the injection pressure of control system apace, it is big to have overcome big-and-middle-sized common rail for diesel engine pipe volume peculiar to vessel, the deficiency that pressure change speed is slow; And can realize multiple injection rate; Can satisfy diesel engine requirement to injection pressure and fuel injection characteristic under different rotating speeds and operating mode, thereby effectively improve the Economy and the power performance of diesel engine, reduce noxious emission.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is multistage pressurization control part of the present invention and electric-controlled fuel injector part-structure schematic representation;
Fig. 3 is a multistage pressurization control part-structure schematic representation of the present invention;
Fig. 4 electric-controlled fuel injector part-structure of the present invention schematic representation.
Embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
In conjunction with Fig. 1～4, multistage pressurized electrically controlled co-rail oil injection system mainly comprises sump 1, fuel tank 12, filter cleaner 2,6,11,13, high pressure lubricating oil pump 3, machine oil common rail pipe 8, fuel pump 10, fuel common-rail pipe 14, multistage pressurization control part 15, electric-controlled fuel injector 16 and oil pipe etc.Sent in the machine oil common rail pipe 8 through high-pressure unit oil pipe 4,5 by high pressure lubricating oil pump 3 after the filtration of machine oil in the sump 1 through oil filter 2 and 6.Pressure-limit valve 7 and pressure transducer 9 are installed on the machine oil common rail pipe 8.Pressure-limit valve 7 is used to limit rail pressure, and when rail pressure surpassed limit value, pressure-limit valve 7 was opened, and the machine oil in the machine oil common rail pipe is released by return tube in the sump 1, thereby reduces rail pressure.Pressure transducer 9 is used for measuring the engine oil pressure in the machine oil common rail pipe in real time, and pressure signal is fed back to the control that electronic control unit is used for rail pressure.Machine oil common rail pipe 8 has accumulates machine oil and the effect of stabilizing the pressure surge of pipe inner engine oil, and is responsible for machine oil is assigned in the hydraulic pressure cavity of charged piston top.The working oil of multistage pressurized electrically controlled co-rail oil injection system is a machine oil, utilizes machine oil that fuel oil is carried out supercharging.
Fig. 2 is the structural representation of multistage pressurization control part of multistage pressurized electrically controlled co-rail oil injection system and electric-controlled fuel injector part.Fig. 3,4 is respectively the structural representation of multistage pressurization control part and electric-controlled fuel injector part.Shown in figure, multistage pressurization control part 15 links to each other with electric-controlled fuel injector with common rail pipe respectively, and this part comprises in line check valve 17,29; Charged piston 22,26; Two-position three way solenoid electric valve 18,24, charged piston Returnning spring 21,27, charged piston below hydraulic pressure cavity 19,30; Charged piston top hydraulic pressure cavity 23,25, charged piston hydraulic control chamber 20,28 and charged piston return check valve 31.Solenoid valve 18 is installed between the path of charged piston below hydraulic pressure cavity 19 and electric-controlled fuel injector 16 and charged piston top hydraulic pressure cavity 25, is used to switch the unlatching and the closure of two paths, and injection system is operated under the different working pattern.Solenoid valve 24 be used to control between charged piston top hydraulic pressure cavity 23 and the machine oil common rail pipe 8 the oil-feed path and and sump 1 between way to cycle oil.Charged piston hydraulic control chamber 20 links to each other with fuel common-rail pipe 14 through in line check valve 17,29 respectively with 28, and links to each other with fuel tank 12 through return check valve 31.Charged piston below hydraulic pressure cavity 19,30 communicates with electric-controlled fuel injector 16 and links to each other with fuel common-rail pipe 14 through in line check valve 32.The cracking pressure of return check valve 31 is greater than the cracking pressure of in line check valve 17 and 29.
Multistage pressurization control partly utilizes two-position three way magnetic valve control charged piston whether the fuel oil in the hydraulic pressure cavity of charged piston below to be carried out supercharging.When the solenoid valve no electric circuit, charged piston is not implemented pressurization to the fuel oil in the hydraulic pressure cavity of below.When solenoid valve was switched on, charged piston carried out supercharging to the fuel oil in the hydraulic pressure cavity of below, simultaneously the fuel oil in the charged piston hydraulic control chamber was pushed back fuel tank through return check valve.After end of injection; The solenoid valve outage; Pressurization system is communicated with sump; Pressure reduces rapidly, and the fuel oil in the fuel common-rail pipe 14 gets into charged piston hydraulic control chamber 20,28 through one-way valve 17,29, cooperates the reposition force of charged piston below hydraulic pressure and Returnning spring that charged piston is pushed back top dead center.
In line check valve 17,29 is used to prevent that the fuel oil in the charged piston hydraulic control chamber 19 and 30 flows back to the fuel common-rail pipe when charged piston is descending; To guarantee that fuel pressure is stable in the fuel common-rail pipe; The cracking pressure of return check valve 31 is greater than the cracking pressure of in line check valve 17 and 32; Can guarantee that the interior fuel oil in charged piston hydraulic control chamber 19,30 can directly not flow back to fuel tank 12 when charged piston 22,26 is not implemented pressurization.In line check valve 32 is used to stop the fuel oil that is pressurized plunger booster to flow back to fuel common-rail pipe 14, thereby guarantees stable fuel oil rail pressure and boost pressure.
Electric-controlled fuel injector 16 links to each other with fuel common-rail pipe 14 through in line check valve 32; And communicate with two charged pistons below hydraulic pressure cavity, mainly form by bi-bit bi-pass high-speed electromagnetic valve 33, meter in hole 36, pressure control cavity 35, fuel-displaced throttle orifice 34, control piston 37, needle-valve Returnning spring 38, needle-valve return spring holder 39, needle-valve 40, oil holding slot 41 and fuel tank 12.Electric-controlled fuel injector links to each other with fuel common-rail pipe 14 through one-way valve 32, and communicates with the hydraulic pressure cavity 19 and 30 of charged piston below.Pressure control cavity 35 links to each other with fuel common-rail pipe 14 with charged piston below hydraulic pressure cavity 19,30 through meter in hole 36, links to each other with fuel tank 12 through fuel-displaced throttle orifice 34.Unlatching and closure by drainback passage between solenoid valve 33 pilot pressure control chambers 35 and the fuel tank 12.
Fuel oil in the solenoid valve 33 pilot pressure control chambers 35 is to the drainback passage of fuel tank 12; During solenoid valve 33 power-failure closes; Drainback passage is sealed, and the active area that fuel oils make progress to needle-valve 40 greater than oil holding slot 41 intermediate fuel oils to control piston 37 downward active areas in the pressure control cavity 35 is therefore in pressure control cavity 35 under the acting in conjunction of the spring force of fuel pressure and needle-valve Returnning spring 38; Needle-valve 40 is taken a seat and is resetted, sealing jet orifice.When solenoid valve 33 energisings are opened; Drainback passage is opened, and the fuel oils in the pressure control cavity 35 are released rapidly in the fuel tank 12, and the fuel pressures in the pressure control cavity 35 descend rapidly; The active force that oil holding slot 41 intermediate fuel oil pressure make progress to needle-valve 40 is greater than the downward spring force of needle-valve Returnning spring 38; Needle-valve 40 rises, and opens spray orifice, the commencement of fuel injection process.
Electric-controlled fuel injector 16 is regulated the oil spout moment, the duration of injection and the injecting times of oil sprayer according to diesel engine speed and operating mode demand according to control command.
Working principle of the present invention is:
When oil sprayer carries out oil spout; Cooperation control through solenoid valve 18,24 and 33; Multistage pressurized electrically controlled co-rail oil injection system can be operated under three kinds of patterns, under identical machine oil common rail pressure condition, can carry out fuel injection with multiple different injection pressures and injection rate.
1, in injection process, solenoid valve 18 outages, solenoid valve 24 energisings.Solenoid valve 18 outages cut off hydraulic pressure cavity 19 and hydraulic pressure cavity 25, and are communicated with fuel common-rail pipe 14 through one-way valve 32, and not pressurized fuel oil gets in the hydraulic pressure cavity 19.Solenoid valve 24 energisings make hydraulic pressure cavity 23 be communicated with machine oil common rail pipe 8, and high-pressure oil gets in the hydraulic pressure cavity 23, and it is descending to promote charged piston 22, the fuel oil in the hydraulic pressure cavity 19 is pressurizeed, and the high pressure fuel after the supercharging is sent in the electric-controlled fuel injector 16.After solenoid valve 33 energisings are opened, system's commencement of fuel injection, injection pressure is confirmed by the pressure ratio of charged piston 22, is the rail pressure of 6 times of machine oil common rail pipes.After end of injection, solenoid valve 24 outages make hydraulic pressure cavity 23 be communicated with sump 1, and pressure reduces rapidly.Fuel oil in the fuel common-rail pipe 14 gets in the hydraulic control chamber 20 of charged piston 22 through one-way valve 17; Cooperate the reposition force of charged piston 22 below hydraulic pressure and Returnning spring 21 that charged piston 22 is pushed back top dead center; Fuel oil in the fuel common-rail pipe 14 is full of hydraulic pressure cavity 19 again through one-way valve 32, prepares to spray next time.
2, in injection process, solenoid valve 18,24 is switched on simultaneously.Solenoid valve 18 energisings make hydraulic pressure cavity 19 be communicated with hydraulic pressure cavity 25, cut off with fuel common-rail pipe 14, and this moment, the fuel oil of fuel common-rail pipe 14 interior non-intensified got in the hydraulic pressure cavity 30 of charged piston 26 belows through one-way valve 32.Solenoid valve 24 energisings; Hydraulic pressure cavity 23 is communicated with machine oil common rail pipe 8, and high-pressure oil gets in the hydraulic pressure cavity 23, and it is descending to promote charged piston 22; Fuel oil in the hydraulic pressure cavity 19 pressurizes; And be pressed in the hydraulic pressure cavity 25, and then carrying out supercharging through the fuel oil in 26 pairs of hydraulic pressure cavity 30 of charged piston, the fuel oil after the supercharging is admitted in the electric-controlled fuel injector 16.After solenoid valve 33 energisings are opened, system's commencement of fuel injection, injection pressure is confirmed jointly by the pressure ratio of charged piston 22,26, is the rail pressure of 6 * 2=12 times of machine oil common rail pipe.After end of injection; Solenoid valve 24 outage earlier; Pressurization system is communicated with sump, and pressure reduces rapidly, and the fuel oil in the fuel common-rail pipe 14 is through getting into hydraulic pressure cavity 28 through one-way valve 17; Cooperate the reposition force of charged piston 26 below hydraulic pressure and Returnning spring 27 that charged piston 26 is pushed back top dead center, the fuel oil in the hydraulic pressure cavity 25 is pushed back in the hydraulic pressure cavity 19.Solenoid valve 18 cuts off the power supply again then; Through the fuel oil in the one-way valve 17 entering hydraulic control chambeies 20; Cooperate the reposition force of charged piston 22 below hydraulic pressure and Returnning spring 21 that charged piston 22 is pushed back top dead center; Fuel oil in the fuel common-rail pipe 14 is full of hydraulic pressure cavity 19 again through one-way valve 32, prepares to spray next time.
3, in injection process, solenoid valve 24 energising earlier, solenoid valve 18 back energisings.When solenoid valve 24 energising and solenoid valve 18 were not switched on, pressurized effect was identical with the 1st kind of mode of operation, and by charged piston 22 independent superchargings, pressure ratio is the rail pressure of 6 times of machine oil common rail pipes.And when point 18 when also switching on, pressurized effect then with the 2nd in mode of operation identical, by charged piston 22,26 common superchargings, pressure ratio is the rail pressure of 12 times of machine oil common rail pipes.Therefore, under this kind mode of operation, can obtain the two-stage cascade fuel-injection pressure that pressure raises gradually, and then effectively control the injection rate in the injection process.
In the injection process, confirm the beginning and the finish time of oil spout constantly by the opening and closing of solenoid valve on the electric-controlled fuel injector 33, the opening time of solenoid valve 33 is confirmed the fuel injection pulsewidth of system.When the solenoid valve 33 of electric-controlled fuel injector was opened, the fuel oil in the oil sprayer hydraulic control chamber 35 flowed back to fuel tank 12 via return tube.
Through the multi-injection control function that can realize the control and the electric-controlled fuel injector of injection pressure and injection rate under three kinds of mode of operations; Multistage pressurized electrically controlled co-rail oil injection system is the injection pressure and the injection rate of control system neatly; Satisfy diesel engine requirement to different injection pressures and injection rate under different rotating speeds and operating mode; Can improve jet performance effectively, further improve the performance of diesel engine, reduce noxious emission.
Claims (9)
1. multistage pressurized electrically controlled co-rail oil injection system; It is characterized in that: comprise sump, high pressure lubricating oil pump, fuel tank, fuel pump, multistage pressurization control part, electric-controlled fuel injector, machine oil common rail pipe, fuel common-rail pipe, pressure transducer, pressure-limit valve, oil inlet pipe; High pressure lubricating oil pump junctor fuel tank and machine oil common rail pipe; Fuel pump connects fuel tank and fuel common-rail pipe, and multistage pressurization control partly connects machine oil common rail pipe, fuel common-rail pipe and passes through oil inlet pipe connection electric-controlled fuel injector, and electric-controlled fuel injector connects the fuel common-rail pipe; Setting pressure sensor and pressure-limit valve on the machine oil common rail pipe, the machine oil common rail pipe is communicated with sump through pressure-limit valve.
2. multistage pressurized electrically controlled co-rail oil injection system according to claim 1; It is characterized in that: described multistage pressurization control partly comprises multistage pressurization control unit; Multistage pressurization control unit comprises two-position three way magnetic valve, charged piston, in line check valve, return check valve; The charged piston top is provided with charged piston top hydraulic pressure cavity; The charged piston below is provided with charged piston below hydraulic pressure cavity; Charged piston hydraulic control chamber is set in the charged piston, and first charged piston top hydraulic pressure cavity connects machine oil common rail pipe and sump through first two-position three way magnetic valve, and the first charged piston control chamber connects the fuel common-rail pipe, connects fuel tank through return check valve through first in line check valve respectively; First charged piston below hydraulic pressure cavity connects second charged piston top hydraulic pressure cavity and oil inlet pipe through second two-position three way magnetic valve; The second charged piston control chamber connects the fuel common-rail pipe, connects fuel tank through return check valve through second in line check valve respectively, and second charged piston below hydraulic pressure cavity connects oil inlet pipe, and the 3rd in line check valve is communicated with fuel common-rail pipe and oil inlet pipe.
3. multistage pressurized electrically controlled co-rail oil injection system according to claim 2 is characterized in that: the pressure ratio of described first charged piston and second charged piston is respectively 6 and 2.
4. multistage pressurized electrically controlled co-rail oil injection system according to claim 3 is characterized in that: described multistage pressurization control unit also comprises the charged piston Returnning spring, and the charged piston Returnning spring is installed in the charged piston.
5. according to the arbitrary described multistage pressurized electrically controlled co-rail oil injection system of claim 1-4; It is characterized in that: described electric-controlled fuel injector comprises bi-bit bi-pass high-speed electromagnetic valve, control piston, needle-valve, oil holding slot; Control piston connects needle-valve, and the control piston top is provided with pressure control cavity, and pressure control cavity connects fuel tank through the bi-bit bi-pass high-speed electromagnetic valve; Pressure control cavity also is communicated with oil inlet pipe; Between pressure control cavity and the bi-bit bi-pass high-speed electromagnetic valve fuel-displaced throttle orifice is set, the meter in hole is set between pressure control cavity and the oil inlet pipe, oil holding slot is arranged on the needle-valve place and is connected with oil inlet pipe.
6. multistage pressurized electrically controlled co-rail oil injection system according to claim 5, it is characterized in that: described electric-controlled fuel injector also comprises the needle-valve Returnning spring, the needle-valve Returnning spring is installed in the needle-valve top.
7. according to the arbitrary described multistage pressurized electrically controlled co-rail oil injection system of claim 1-4, it is characterized in that: described multistage pressurization control unit and electric-controlled fuel injector are formed an oil spout unit, and the quantity of oil spout unit equals the quantity of engine cylinder.
8. according to the arbitrary described multistage pressurized electrically controlled co-rail oil injection system of claim 5, it is characterized in that: described multistage pressurization control unit and electric-controlled fuel injector are formed an oil spout unit, and the quantity of oil spout unit equals the quantity of engine cylinder.
9. according to the arbitrary described multistage pressurized electrically controlled co-rail oil injection system of claim 6, it is characterized in that: described multistage pressurization control unit and electric-controlled fuel injector are formed an oil spout unit, and the quantity of oil spout unit equals the quantity of engine cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210163136.5A CN102691604B (en) | 2012-05-24 | 2012-05-24 | Multi-stage boosting electric-control common-rail oil injection system |
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| CN201210163136.5A CN102691604B (en) | 2012-05-24 | 2012-05-24 | Multi-stage boosting electric-control common-rail oil injection system |
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| CN102691604B CN102691604B (en) | 2014-01-29 |
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| CN102900576A (en) * | 2012-10-22 | 2013-01-30 | 哈尔滨工程大学 | Electric control common rail oil injection system with two-stage supercharging piston |
| CN102900579A (en) * | 2012-10-22 | 2013-01-30 | 哈尔滨工程大学 | Variable-oil injection pressure double-boosting common-trail oil injection system |
| CN104595078A (en) * | 2014-11-26 | 2015-05-06 | 中国北方发动机研究所(天津) | Electronic control injector |
| CN105569898A (en) * | 2015-12-24 | 2016-05-11 | 芜湖恒耀汽车零部件有限公司 | Automobile exhaust waste gas recycling system |
| CN105651534A (en) * | 2015-12-30 | 2016-06-08 | 中国航空工业集团公司沈阳发动机设计研究所 | System capable of realizing high-pressure and low-pressure fuel oil and lubricating oil heat exchanger tests |
| CN112780416A (en) * | 2021-01-29 | 2021-05-11 | 安徽应流航空科技有限公司 | Main fuel oil distribution structure |
| CN112814816A (en) * | 2020-12-18 | 2021-05-18 | 南岳电控（衡阳）工业技术股份有限公司 | High-pressure common rail fuel injection system and control method thereof |
| CN112814816B (en) * | 2020-12-18 | 2024-06-11 | 南岳电控（衡阳）工业技术股份有限公司 | High-pressure common rail fuel injection system and control method thereof |
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| CN104595078A (en) * | 2014-11-26 | 2015-05-06 | 中国北方发动机研究所(天津) | Electronic control injector |
| CN105569898A (en) * | 2015-12-24 | 2016-05-11 | 芜湖恒耀汽车零部件有限公司 | Automobile exhaust waste gas recycling system |
| CN105651534A (en) * | 2015-12-30 | 2016-06-08 | 中国航空工业集团公司沈阳发动机设计研究所 | System capable of realizing high-pressure and low-pressure fuel oil and lubricating oil heat exchanger tests |
| CN112814816A (en) * | 2020-12-18 | 2021-05-18 | 南岳电控（衡阳）工业技术股份有限公司 | High-pressure common rail fuel injection system and control method thereof |
| CN112814816B (en) * | 2020-12-18 | 2024-06-11 | 南岳电控（衡阳）工业技术股份有限公司 | High-pressure common rail fuel injection system and control method thereof |
| CN112780416A (en) * | 2021-01-29 | 2021-05-11 | 安徽应流航空科技有限公司 | Main fuel oil distribution structure |
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| CN102691604B (en) | 2014-01-29 |
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