CN101975130A - Electronic control high-pressure common rail fuel injecting device - Google Patents
Electronic control high-pressure common rail fuel injecting device Download PDFInfo
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- CN101975130A CN101975130A CN 201010527302 CN201010527302A CN101975130A CN 101975130 A CN101975130 A CN 101975130A CN 201010527302 CN201010527302 CN 201010527302 CN 201010527302 A CN201010527302 A CN 201010527302A CN 101975130 A CN101975130 A CN 101975130A
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Abstract
The invention discloses an electronic control high-pressure common rail fuel injecting device comprising an electronic control high-pressure common rail fuel injector, a high-pressure common rail, an electronic control unit (ECU), a fuel selector switch, a differential pressure control valve and a high-pressure lubricating oil rail. By using the selector switch and selecting and starting various fuel subprograms stored in the ECU by switching a signal input circuit of the fuel programs, the device solves the problems of the switching of various fuels for the electronic control high-pressure common rail fuel injector to combust and the matching and lubrication of a slidably-matched circular hole surface of the electronic control high-pressure common rail fuel injector and a needle valve; and the ECU controls the frequency of an electronic control two-way valve to be higher than 1KHz. The invention avoids the wear and the failure of the needle valve, improves the work reliability, can combust various fuels with different components, not only can accurately control the optimal start fuel injection time and pulse width of various fuels, but also can control the speed of the fuel and allow a diesel engine to obtain the minimum fuel consumption rate and emission pollution.
Description
Technical field
The invention belongs to technical field of internal combustion engines, relate to diesel fuel injection system, be specially a kind of Electrocontrolled high-pressure common rail fuel injection apparatus.
Technical background
Diesel engine thermal efficiency height has become widely used motor.Diesel engine uses diesel oil to make fuel, because world petroleum resource reduces year by year in recent years, the diesel-fuel price fluctuation rises, and countries in the world are all in the alternative fuel of seeking and promote diesel oil; Various countries' Abgasgesetz and vehicle fuel consume limit value are severe day by day, and diesel engine is all being updated in countries in the world, not only will reduce the fuel consumption rate and the discharging of diesel engine, and need make diesel engine be fit to use the alternative fuel of diesel oil of the different cultivars of each region.A large amount of development tests have been done to diesel engine dimethyl ether fuel, biodiesel, methanol diesel-oil, ethanol diesel fuel in the whole world, what have enters the commodity production stage, and the U.S., Britain have all carried out diesel engine with Germany and used the Study of Gasoline test and obtained ratio with the lower fuel consumption rate of power petrol engine.Current, diesel engine uses substitute fuel ubiquity two large problems: the one, because fuel-injected pressure, commencement of fuel injection constantly, fuel injection quantity, injection rate is the key factor that influences diesel engine fuel consumption rate and exhaust emission, and the physicochemical characteristics difference of the fuel of different cultivars, best injection pressure when on diesel engine, using, oil spout is (injection advance angle) constantly, fuel injection quantity, injection rate is all inequality, and these parameters are difficult to adjust by the replacing of fuel band in the using process of existing diesel engine, so general a kind of fuel of burning that only is fit to of improved alternative fuel diesel engine, owing to alternative fuel kind difference and the under-supply situations of alternative fuel that each region occurs because of the resource difference, the diesel engine that causes using alternative fuel is difficult to apply; The 2nd, the ratio of viscosities diesel oil of most of alternative fuel is low, and the plunger and bare of injection pump of diesel engine and injector valve idol part are to rely on diesel fuel lubricity and sealing, use the problem that low viscous alternative fuel is prone to plunger coupled parts and pintle nozzle match-ing parts wear out failure, at present all adopt the method that in the low viscosity alternative fuel, adds the additive that improves viscosity, but bring fuel cost increase with additive in diesel engine combustion, change into new pollutant and in use additive adhesive layer progressive additive on injector valve idol part the sticking problem of stubbornly refusing to move of pintle nozzle match-ing parts appears.For solving the pintle nozzle match-ing parts wear problem, utility model patent " lubricating fitting of dimethyl ether engine oil sprayer " (notice of authorization CN1599266Y) provides a kind of high pressure gas holder to be connected with the large tank of lubricant oil pressurizing cylinder through the pressure regulator valve of outlet, with the lubricant oil in the small oil tank of supercharging in pipeline is pressed onto oil pocket on the needle-valve fitting surface, play lubricated and seal action, exist and be difficult to long-term fuel feeding, particularly can not control the problem of lubricant oil and fuel oil pressure reduction, lubrication pressure is too high can to flow into fuel oil, cross when low low viscous dimethyl ether fuel and can enter matching gap and make the needle-valve wear out failure, thereby this device does not have the example of practical application so far; For addressing the above problem, patent of invention " the diesel engine double-fuel oil pump sprays the system of two kinds of fuel " (notice of authorization CN1312393C) has been invented the mechanical type injection system that sprays two kinds of fuel oils with two kinds of fuel pumps, make two kinds of fuel oils of diesel engine burning, not enough is to use two kinds of fuel oils, the mechanical type injection system that adopts is difficult to reach state IV emission standard, and tighter from now on fuel consume limit value, also there is the problem of injector valve idol part inefficacy easy to wear when using low viscosity (as dimethyl ether etc.) fuel.
Summary of the invention
The objective of the invention is in order to overcome deficiency and the defective in the existing diesel technology, the invention provides a kind of minimizing needle-valve wearing and tearing, improved functional reliability, but use various fuel with making the diesel engine high-efficiency low-pollution, and obtain the Electrocontrolled high-pressure common rail fuel injection apparatus of minimum specific fuel consumption and exhaust emission.
Technological scheme provided by the invention for achieving the above object is:
A kind of Electrocontrolled high-pressure common rail fuel injection apparatus, comprise the Electrocontrolled high-pressure common rail oil sprayer, high-pressure common rail, ECU (Electrical Control Unit) ECU, differential pressure control valve, extreme pressure lubricant rail, it is characterized in that: also comprise the fuel diverter switch and switch fuel program singal input circlult, described fuel diverter switch links to each other with switching fuel program singal input circlult, switch fuel program singal input circlult and link to each other with ECU (Electrical Control Unit) ECU, described ECU (Electrical Control Unit) ECU links to each other with the Electrocontrolled high-pressure common rail oil sprayer by control oil spout circuit; Described high-pressure common rail links to each other with fuel pressure control valve and oil pressure sensor respectively, and oil pressure sensor links to each other with ECU (Electrical Control Unit) ECU through the oil pressure sensing circuit, and ECU (Electrical Control Unit) ECU links to each other with fuel pressure control valve through the fuel pressure control circuit; Described high pressure fuel pump tubing interface links to each other with high-pressure common rail through fuel pressure control valve, and high-pressure common rail is connected with the Electrocontrolled high-pressure common rail oil sprayer through injection line; Described differential pressure control valve links to each other with high-pressure common rail through fuel pipe, the high-tension lubrication tubing interface links to each other with the extreme pressure lubricant rail through differential pressure control valve, and the extreme pressure lubricant rail is connected with annular oil groove on the guiding circular hole face that is slidingly matched with needle-valve through the oil leab of high-tension lubrication oil pipe, Electrocontrolled high-pressure common rail oil sprayer.
Beneficial effect of the present invention:
1, uses fuel diverter switch and select and start the oil spout subroutine that is stored in the various fuel among the ECU (Electrical Control Unit) ECU among the present invention by switching fuel program singal input circlult, solve the transfer problem that the Electrocontrolled high-pressure common rail oil sprayer uses various fuel, can use various fuel oil.
2, extreme pressure lubricant of the present invention enters the needle-valve gap that is slidingly matched through differential pressure control valve, lubricant oil oil pressure in the maintenance gap is relatively higher than the lubrication principle of a little pressure reduction of oil pressure of two ends high pressure fuel, efficiently solve the lubrication problem of needle-valve of working and the circular hole face that is slidingly matched in the different high fuel oil of different cultivars fuel oil is pressed, thereby avoided the needle-valve wearing and tearing and lost efficacy the functional reliability of injector valve when having improved the low-viscosity fuel that uses different cultivars.
3, the ECU (Electrical Control Unit) ECU that is adopted controls the frequency that automatically controlled Twoway valves opens and closes and is higher than 1KHz, thereby not only can control the best start injection time and the pulsewidth of various fuel exactly, and may command injection rate, but use various fuel with making the diesel engine high-efficiency low-pollution, and obtain minimum specific fuel consumption and exhaust emission.
Description of drawings
Fig. 1 is the structural representation of a kind of Electrocontrolled high-pressure common rail fuel injection apparatus of the present invention.
Among Fig. 1: 1, Electrocontrolled high-pressure common rail oil sprayer; 2, high-pressure common rail; 3, oil pressure sensor; 4, fuel pressure control valve; 5, ECU (Electrical Control Unit) ECU; 6, fuel diverter switch; 7, high pressure fuel pump tubing interface; 8, fuel pipe; 9, high-pressure oil pump tubing interface; 10, differential pressure control valve; 11, extreme pressure lubricant rail; 12, high-tension lubrication oil pipe; 13, injection line; 14, return tube interface; 1.1, automatically controlled Twoway valves; 1.2, needle valve spring; 1.3, needle-valve; 10.1, oil cylinder, 10.2 pressure difference valve; 10.3, the low differential pressure spring; 10.4, fuel oil cylinder, 10.5, annular oil groove; 10.6, lubricated oil cylinder; 10.7, the pressure reduction valve opening; The matching gap of j, needle-valve and guiding circular hole; H, back oil road; R1, fuel oil road; R2, annular pressure chamber; R3, ring shaped oil passage; R4, nozzle opening; Y1, oil leab; Y2, annular oil groove; J1, meter in hole; J2, meter out hole; D1, control oil spout circuit; D2, oil pressure sensing circuit; D3, fuel pressure control circuit; D4, throttle position, engine speed, crank angle, top dead center signal input circuit; D5, switching fuel program singal input circlult; K, control chamber.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.
As shown in Figure 1, structural representation of the present invention.A kind of Electrocontrolled high-pressure common rail fuel injection apparatus comprises Electrocontrolled high-pressure common rail oil sprayer 1, high-pressure common rail 2, oil pressure sensor 3, pressure controlled valve 4, ECU (Electrical Control Unit) ECU5, fuel diverter switch 6, differential pressure control valve 10 and extreme pressure lubricant rail 11.
Described Electrocontrolled high-pressure common rail oil sprayer 1 has automatically controlled Twoway valves 1.1, needle valve spring 1.2 and needle-valve 1.3, its needle-valve 1.3 is contained in the cylindrical pilot hole of Electrocontrolled high-pressure common rail oil sprayer 1, be accurate being slidingly matched with circular hole, matching gap j is 0.0015～0.003 millimeter scope, the upper end of needle valve spring 1.2 upper ends and control chamber K joins, and lower end and needle-valve 1.3 join; The conical surface of described needle-valve 1.3 lower ends is being pressed under the effect of needle valve spring 1.2 elastic force on the nozzle opening R4, fuel oil road R1 is communicated with ring shaped oil passage R3 through annular pressure chamber R2, also be connected with control chamber K through meter in hole j1, control chamber K is communicated with automatically controlled Twoway valves 1.1 through meter out hole j2, meter out aperture j2 is greater than meter in aperture j1, and automatically controlled Twoway valves 1.1 is communicated with return tube interface 14 through back oil road H;
High pressure fuel pump tubing interface 7 is communicated with fuel pressure control valve 4, fuel pressure control valve 4 is communicated with high-pressure common rail 2, high-pressure common rail 2 is communicated with oil pressure sensor 3, and high-pressure common rail 2 also is communicated with the fuel oil road R1 of Electrocontrolled high-pressure common rail oil sprayer 1 through injection line 13;
Fuel oil diverter switch 6 is communicated with ECU (Electrical Control Unit) ECU5 through switching fuel program singal input circlult D5, oil pressure sensor 3 is connected with ECU (Electrical Control Unit) ECU5 through oil pressure sensing circuit D2, throttle position, engine speed, crank angle, top dead center signal input circuit D4 are connected with ECU (Electrical Control Unit) ECU5, and ECU (Electrical Control Unit) ECU5 is connected with fuel pressure control valve 4, is connected with the automatically controlled Twoway valves 1.1 of Electrocontrolled high-pressure common rail oil sprayer 1 through control oil spout circuit D1 through fuel pressure control circuit (D3) respectively;
Described differential pressure control valve 10 comprises oil cylinder 10.1, pressure difference valve 10.2, low differential pressure spring 10.3, pressure difference valve 10.2 is contained in the oil cylinder 10.1, be accurate being slidingly matched with oil cylinder 10.1, matching gap is 0.002～0.004 millimeter scope, on the fitting surface of the oil cylinder 10.1 that cooperates with pressure difference valve 10.2, be provided with the oil-feed tank 10.5 of annular, annular oil-feed tank 10.5 is connected with high-pressure oil pump tubing interface 9, the upper-end surface of pressure difference valve 10.2 is connected with the lower end of low differential pressure spring 10.3, the upper end of low differential pressure spring 10.3 is connected with the end face of oil cylinder 10.1, pressure difference valve 10.2 is divided into the fuel oil cylinder 10.4 of upper end and the lubricated oil cylinder 10.6 of lower end with oil cylinder 10.1, pressure reduction valve opening 10.7 in the pressure difference valve 10.2 is connected with lubricated oil cylinder 10.6, pressure reduction valve opening 10.7 also is connected with annular oil groove 10.5, the fuel oil cylinder 10.4 on pressure difference valve 10 tops is connected with high-pressure common rail 2 through fuel pipe 8, the lubricated oil cylinder 10.6 of bottom is connected with extreme pressure lubricant rail 11, be that differential pressure control valve 10 is communicated with high-pressure common rail 2 through fuel pipe 8, high-pressure oil pump tubing interface 9 is communicated with differential pressure control valve 10, differential pressure control valve 10 is communicated with extreme pressure lubricant rail 11, and extreme pressure lubricant rail 11 is through high-tension lubrication oil pipe 12, the oil leab Y1 of Electrocontrolled high-pressure common rail oil sprayer 1 is connected with annular oil groove Y2 on the circular hole face that is slidingly matched with needle-valve 1.3.
The working principle of a kind of Electrocontrolled high-pressure common rail fuel injection apparatus of the present invention:
As shown in Figure 1, in ECU (Electrical Control Unit) ECU, store the subroutine of combustion diesel fuel, dimethyl ether, biodiesel, gasoline, methyl alcohol during fabrication, elder generation is according to the fuel band that enters fuel pressure control valve 4 from high pressure fuel pump tubing interface 7 before piloting engine, by switching the fuel subroutine, start the control subprogram of this kind fuel among the ECU (Electrical Control Unit) ECU5 with fuel diverter switch 6 by signal input circuit D5; During engine start, the fuel oil oil pressure Pr that pumps into high pressure fuel pump tubing interface 7 is higher than the best oil spout oil pressure Pr2 of various fuel oils, be Pr＞Pr2, the lubrication pressure Pj that pumps into high-pressure oil pump tubing interface 9 presses Pr greater than the fuel oil that pumps into high pressure fuel pump tubing interface 7, be Pj＞Pr, oil pressure sensor 3 is imported ECU (Electrical Control Unit) ECU5 with the fuel pressure signal in the high-pressure common rail 2 through oil pressure sensing circuit D2, ECU (Electrical Control Unit) ECU5 drives fuel pressure control valve 4 through fuel pressure control circuit D3 will be controlled to be the best injection pressure Pr2 of this kind fuel oil from the fuel pressure that high pressure fuel pump tubing interface 7 enters high-pressure common rail 2 through fuel pressure control valve 4, high-pressure common rail 2 intermediate fuel oils enter the fuel oil road R1 of Electrocontrolled high-pressure common rail oil sprayer 1 through injection line 13, enter ring shaped oil passage R3 through annular pressure chamber R2 respectively by fuel oil road R1 again, j1 enters control chamber K through the meter in hole, this moment annular pressure chamber R2, fuel pressure among ring shaped oil passage R3 and the control chamber K all equals Pr2, the fuel pressure that fuel pressure that needle-valve 1.3 upper ends are downward and spring force sum make progress greater than the lower end, the needle-valve 1.3 lower end conical surfaces are pressed in nozzle opening R4 and upward nozzle opening R4 are sealed; Fuel pressure Pr2 in the high-pressure common rail 2 imports differential pressure control valve 10 into through fuel pipe 8, the lubricant oil oil pressure Pj2 that differential pressure control valve 10 control enters extreme pressure lubricant rail 11 from high-pressure oil pump tubing interface 9 through differential pressure control valve 10 is higher than the fuel oil oil pressure Pr2 the high-pressure common rail 2 that imports differential pressure control valve 10 from fuel pipe 8 into, a little pressure reduction is arranged, control also keeps lubricant oil oil pressure Pj2 to equal the normal pressure that fuel pressure Pr adds a crust, i.e. Pj2=Pr2+1bar.
The extreme pressure lubricant pressure P j that enters annular oil groove 10.5 through high-pressure oil pump tubing interface 9 is greater than the high pressure fuel oil pressure Pr that enters the fuel oil cylinder 10.4 of differential pressure control valve 10 from high-pressure common rail 2 through fuel pipe 8, Pj＞Pr, Pj 〉=Pr+4bar, lubricant oil enters lubricated oil cylinder 10.6 from annular oil-feed tank 10.5 through pressure reduction valve opening 10.7, the high-tension lubrication oil pressure that acts on pressure difference valve 10.2 lower ends is pressed greater than the upper end high pressure fuel, pressure difference valve 10.2 up compression and low pressure difference springs 10.3 are to the be connected disconnection of pressure reduction valve opening 10.7 with annular oil-feed tank 10.5, stop into lubricant oil, pressure difference valve 10.2 stops up, it is 1bar at the oil pressure that lubricated oil cylinder 10.6 produces that selected low differential pressure spring 10.3 elastic force at this moment acts on pressure difference valve 10.2, low differential pressure spring 10.3 promotion pressure difference valve 10.2 are descending when the oil pressure in the lubricated oil cylinder 10.6 descends, pressure reduction valve opening 10.7 is communicated with annular oil-feed tank 10.5 again, it is up that lubrication pressure in the lubricated oil cylinder 10.6 rises to pressure difference valve 10.2 again, pressure reduction valve opening 10.7 disconnects with oil-feed tank 10.5 and stops oil-feed, oil pressure reaches till the Pr+1bar, and the extreme pressure lubricant oil pressure Pj2 in the differential pressure control valve 10 control extreme pressure lubricant rails 11 is than the high 1bar of high pressure fuel oil pressure Pr in the high-pressure common rail 2; Lubricant oil in the extreme pressure lubricant rail 11 is through high-tension lubrication oil pipe 12, the oil leab Y1 of Electrocontrolled high-pressure common rail oil sprayer 1 enters the annular oil groove Y2 on the circular hole face that is slidingly matched with needle-valve 1.3, thereby the lubricating oil pressure among the annular oil groove Y2 equals the lubricant oil oil pressure Pj2 in the extreme pressure lubricant rail 11, be needle-valve 1.3 with the lubrication pressure at the middle part of the matching gap j of guiding circular hole be higher than upper end control chamber K intermediate fuel oil oil pressure press with lower end annular pressure chamber R2 in the fuel oil oil pressure press, stoped fuel oil to enter gap j1, evidence: matching gap j in the gap less than 0.004 millimeter, gap length is greater than 5 millimeters, the lubricant oil pressure reduction at two ends, gap is during less than 5bar, unlubricated oil flow phenomenon in the gap, the lubricant oil among the annular oil groove Y2 also can not flow in the fuel oil of annular pressure chamber Y2 and control chamber K through gap j1 at this moment.
ECU (Electrical Control Unit) ECU5 is to from throttle position, engine speed, crank angle, the signal of top dead center (declaring cylinder) signal input circuit D4 input carries out computing, D1 controls 1 oil spout of Electrocontrolled high-pressure common rail oil sprayer through control oil spout circuit: when control oil spout circuit D1 energising, automatically controlled Twoway valves 1.1 is open-minded, high pressure fuel among the control chamber K is through meter out hole j2, automatically controlled Twoway valves 1.1, back oil road H and return tube interface 14 flow back to fuel tank, because meter out hole j2 is greater than meter in hole j1, control chamber K intermediate fuel oil pressure descends rapidly, when the fuel oil drops surpasses 50bar, the fuel pressure that needle-valve 1.3 lower ends make progress is greater than upper end downward fuel pressure and spring force sum, needle-valve 1.3 upwards lifts, and high pressure fuel sprays into engine chamber from ring shaped oil passage R3 through nozzle opening R4; Automatically controlled Twoway valves 1.1 cuts out when outage, cause fuel pressure in the control chamber K to rise to pressure P r2 in the high-pressure common rail 2 rapidly, the fuel pressure that fuel pressure that needle-valve 1.3 upper ends are downward and spring pressure sum make progress greater than needle-valve 1.3 lower ends, needle-valve 1.3 is pressed in nozzle opening R4 upward with nozzle opening R4 sealing, end of injection to coming downwards to the lower end conical surface; Because available fuel diverter switch 6 is selected and starts to be stored in the oil spout subroutine of the various fuel among the ECU (Electrical Control Unit) ECU5 by switching fuel program singal input circlult D5, thereby can use various fuel oils; Because controlling the frequency of automatically controlled Twoway valves switching, ECU (Electrical Control Unit) ECU5 is higher than 1KHz, thereby not only can control the best start injection time (injection advance angle) and the pulsewidth (fuel injection quantity) of various fuel exactly, and may command injection rate (carrying out pre-spray, main injection and repeatedly spray), but use various fuel with making the diesel engine high-efficiency low-pollution, obtain minimum specific fuel consumption and exhaust emission.
Needle-valve 1.3 is connected with control chamber K with the upper end of the matching gap j of guiding circular hole, the lower end is connected with annular pressure chamber R2, the centre is connected with annular oil groove Y2, diesel engine bent axle revolution two in the work operation process changes once oil of (720 °) spray, oil spout perdurabgility less than 36 ° of crank angles, promptly control that oil spout circuit D1 energising, automatically controlled Twoway valves 1.1 are opened, the oil pressure among the control chamber K descends, needle-valve 1.3 rises the Cumulative time of nozzle opening oil spouts less than 5% of the diesel engine work time; The maximum height (lift) that needle-valve 1.3 rises during oil spout is less than 0.4 millimeter, at time of 95 percent of diesel engine work control oil spout circuit D1 no electric circuit, needle-valve 1.3 is in closed condition, this moment needle-valve 1.3 with guiding circular hole matching gap j up and down the high pressure fuel oil pressure at two ends equal lubricant oil oil pressure Pr2 in the high-pressure common rail 2, lubricant oil oil pressure in the middle of the matching gap j equals the lubricant oil oil pressure Pj2 in annular oil groove Y2 and the extreme pressure lubricant rail 11, be Pj2＞Pr2, Pj2=Pr2+1bar, lubricant oil oil pressure among the matching gap j is higher than two ends fuel oil oil pressure, has stoped fuel oil to enter gap j; Lubricant oil among the matching gap j of needle-valve 1.3 and guiding circular hole can not flow into control chamber K and annular pressure chamber R2 yet as previously mentioned;
When control oil spout circuit D1 energising, automatically controlled Twoway valves 1.1 is open-minded, as above-mentioned, during control chamber K intermediate fuel oil drops 50bar, needle-valve 1.3 rising nozzle opening R4 oil spouts, at this moment, fuel oil among the control chamber K internal combustion oil pressure ratio annular pressure chamber R2 forces down 50bar, force down 51bar than the lubricant oil among the annular oil groove Y2, be the high 51bar of fuel oil oil pressure among the control chamber K on the lubricant oil oil pressure ratio matching gap j among the annular oil groove Y2, the lubricant oil of diesel engine is being higher than under the high pressure of 2000bar viscosity greater than 0.682Pas, the diameter of needle-valve 1.3 is 4mm, matching gap j is 0.003 millimeter, annular oil groove Y2 to the gap length of control chamber K be 10mm, when the pressure at the two ends, gap was 51bar, calculating the oil leak amount was 0.00027cm
3/ min, the time that accumulative total fuel injection control circuit D1 energising control chamber K intermediate fuel oil descends in the diesel engine work only accounts for 5% of the diesel engine work time as described above, thereby the oil leak amount among the calculated gap j is per minute 100,000/1. 4 milliliter, 0.000014cm
3/ min compares with former diesel engine oil consumption, can ignore.
Described differential pressure control valve 10 is communicated with high-pressure common rail 2 through fuel pipe 8, high-pressure oil pump tubing interface 9 is communicated with extreme pressure lubricant rail 10, the structure that extreme pressure lubricant rail 10 is connected with annular oil groove Y2 on the circular hole face that needle-valve 1.3 is slidingly matched through the oil leab Y1 of high-tension lubrication oil pipe 12, Electrocontrolled high-pressure common rail oil sprayer 1, when having solved the Electrocontrolled high-pressure common rail oil sprayer and having used pluralities of fuel, the lubrication problem of needle-valve 1.3 and the circular hole face that is slidingly matched.
Claims (1)
1. Electrocontrolled high-pressure common rail fuel injection apparatus, comprise Electrocontrolled high-pressure common rail oil sprayer (1), high-pressure common rail (2), ECU (Electrical Control Unit) ECU (5), differential pressure control valve (10), extreme pressure lubricant rail (11), it is characterized in that: also comprise fuel diverter switch (6) and switch fuel program singal input circlult (D5), described fuel diverter switch (6) links to each other with switching fuel program singal input circlult (D5), switch fuel program singal input circlult (D5) and link to each other with ECU (Electrical Control Unit) ECU (5), described ECU (Electrical Control Unit) ECU (5) links to each other with Electrocontrolled high-pressure common rail oil sprayer (1) by control oil spout circuit (D1); Described high-pressure common rail (2) links to each other with fuel pressure control valve (4) and oil pressure sensor (3) respectively, oil pressure sensor (3) links to each other with ECU (Electrical Control Unit) ECU (5) through oil pressure sensing circuit (D2), and ECU (Electrical Control Unit) ECU (5) links to each other with fuel pressure control valve (4) through fuel pressure control circuit (D3); Described high pressure fuel pump tubing interface (7) links to each other with high-pressure common rail (2) through fuel pressure control valve (4), and high-pressure common rail (2) is connected with Electrocontrolled high-pressure common rail oil sprayer (1) through injection line (13); Described differential pressure control valve (10) links to each other with high-pressure common rail (2) through fuel pipe (8), high-tension lubrication tubing interface (9) links to each other with extreme pressure lubricant rail (11) through differential pressure control valve (10), and extreme pressure lubricant rail (11) is connected with annular oil groove (Y2) on the guiding circular hole face that is slidingly matched with needle-valve through the oil leab (Y1) of high-tension lubrication oil pipe (12), Electrocontrolled high-pressure common rail oil sprayer (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105273026A CN101975130B (en) | 2010-10-29 | 2010-10-29 | Electronic control high-pressure common rail fuel injecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105273026A CN101975130B (en) | 2010-10-29 | 2010-10-29 | Electronic control high-pressure common rail fuel injecting device |
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| Publication Number | Publication Date |
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| CN101975130A true CN101975130A (en) | 2011-02-16 |
| CN101975130B CN101975130B (en) | 2012-05-02 |
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| CN2010105273026A Expired - Fee Related CN101975130B (en) | 2010-10-29 | 2010-10-29 | Electronic control high-pressure common rail fuel injecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257362A (en) * | 2015-10-30 | 2016-01-20 | 中船动力研究院有限公司 | Common rail type air cylinder oil injection lubricating system |
| CN107956618A (en) * | 2016-10-18 | 2018-04-24 | 上海夏雪科技有限公司 | Internal combustion engine |
| CN107956617A (en) * | 2016-10-18 | 2018-04-24 | 上海夏雪科技有限公司 | The fuel injection system of internal combustion engine |
| CN108286476A (en) * | 2017-12-29 | 2018-07-17 | 北京理工大学 | The control method and device of bi-directional electromagnetic force control valve for common rail flow control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105257362A (en) * | 2015-10-30 | 2016-01-20 | 中船动力研究院有限公司 | Common rail type air cylinder oil injection lubricating system |
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| CN108286476A (en) * | 2017-12-29 | 2018-07-17 | 北京理工大学 | The control method and device of bi-directional electromagnetic force control valve for common rail flow control |
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| Publication number | Publication date |
|---|---|
| CN101975130B (en) | 2012-05-02 |
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