CN103201496B - The fuel injection system of internal combustion engine - Google Patents
The fuel injection system of internal combustion engine Download PDFInfo
- Publication number
- CN103201496B CN103201496B CN201180053426.8A CN201180053426A CN103201496B CN 103201496 B CN103201496 B CN 103201496B CN 201180053426 A CN201180053426 A CN 201180053426A CN 103201496 B CN103201496 B CN 103201496B
- Authority
- CN
- China
- Prior art keywords
- fuel
- injection system
- pressure
- fuel injection
- metering units
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 82
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 12
- 238000003860 storage Methods 0.000 claims abstract description 7
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000010992 reflux Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 2
- 239000008187 granular material Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/27—Fuel-injection apparatus with filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/28—Details of throttles in fuel-injection apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Filtering Materials (AREA)
Abstract
The present invention relates to the fuel injection system of a kind of internal combustion engine, it includes high pressure fuel pump (3), metering units (7) is connected in the upstream of the high-pressure area (5) of described high pressure fuel pump, the fuel quantity carried from storage container (2) is supplied to high-pressure area (5) with metering method via service (8) by described metering units, wherein, zero conveyance conduit (18) branches out from service (8) and leads to narrow portion (20) region of venturi choke valve (19) in backflow portion (14), wherein, venturi choke valve (19) also fluidic junction in entrance (21) and/or in leading to narrow portion (20) is respectively provided with a filter (22, 23).
Description
Technical field
The present invention relates to the fuel injection system of a kind of internal combustion engine, it includes a high pressure fuel pump, metering units is connected in the upstream of the high-pressure area of high pressure fuel pump, the metering of this metering units will be supplied to high-pressure area with measuring from the fuel quantity storing container transport by service, wherein, zero conveyance conduit branches out from service, and this zero conveyance conduit converges in backflow portion in the narrow portion region of venturi choke valve.
Background technology
The fuel injection system of modern diesel engines majority at present is configured to common-rail injection system.In such systems, cylinder draws fuel under high pressure by each fuel injector from pressure accumlator, and pressure accumlator is provided with the fuel under high pressure of respective amount for its that aspect by the high-pressure area of high pressure fuel pump.Here, metering units is generally connected to the upstream, high-pressure area of high pressure fuel pump, and metering units metering fuel quantity required for each time of running of Diesel engine, thus the fuel quantity only also needed to is compressed to high pressure and is transported in high-pressure storage.Under the running status determined, it is transported to the fuel quantity in high-pressure storage yes zero.When so-called zero conveying, it is supplied to the high-pressure area of high pressure fuel pump by metering units also without fuel.But now, because revealing, being likely not to have by the fuel stream of the less fuel quantity of metering units and being completely blocked.For this reason that, generally branch out zero conveyance conduit from the service of the high-pressure area being supplied to high pressure fuel pump, by this zero conveyance conduit, this amount of leakage is reflowable in backflow portion.
From the fuel injection system of the known such internal combustion engine of DE10154133C1, in this fuel injection system, metering units is connected to the upstream of the high-pressure area of high pressure fuel pump.By this metering units, respectively fuel quantity that is that compress and that be transported in high-pressure storage is measured to high-pressure area.Now, metering units provides low-pressure fuel by being positioned at the delivery pump of upstream from storing container, and these low-pressure fuels are directed to the front part of metering units by filter element.Here, there is the overflow pipe of overflow valve and there is the lubricating pipe entrance branch from metering units of lubricating oil choke valve.By lubricating pipe, the area of low pressure of high pressure fuel pump is provided with low-pressure fuel to be lubricated and to cool down.By overflow valve be arranged on the piston that inside overflow valve, spring force loads, fuel is transported in the backflow portion of fuel injection system from the stress level that determines, in order to carries when by the low transfer rate of metering units or zero and is also maintained at the pressure before metering units under changeless situation.
In addition, the side of the service of the high-pressure area leading to high pressure fuel pump of metering units arranges zero conveyance conduit branched out from service, carry under situation zero, by this zero conveyance conduit, it is possible to the amount of leakage still flowing through metering units is transported in backflow portion.In order to make the inlet valve of high-pressure area open pressure keep low as far as possible this in view of this inlet valve of run duration open in advance and fuel quantity in the work chamber of adjoint with it, bigger be transported to pump is yearning, according to the type of venturi choke valve, zero conveyance conduit is made to converge in backflow portion.Here, zero conveyance conduit converges in backflow portion in the narrow portion region of this venturi choke valve.Being achieved in, be internally formed negative pressure in zero conveying with here by venturi choke valve in narrow portion region of the fuel of overflow valve and backflow portion flowing, by this negative pressure, amount of leakage is inhaled in backflow portion.Therefore, the pressure in this zero conveyance conduit is much smaller compared with the system not having venturi choke valve, thus the unlatching pressure of the inlet valve of high-pressure area may be selected to be lower, is flowed in high-pressure area with amount of leakage without occurring by mistake to open.
Summary of the invention
Departing from the foregoing prior art, the task of the present invention is in that, it is provided that the fuel injection system of a kind of internal combustion engine, makes its being disturbed property in zero conveyance conduit region be lowered.
This task is from prior art, and the distinguishing characteristics in conjunction with it solves.What following optional technical scheme sets forth again the present invention is advantageously improved scheme.
The present invention include venturi choke valve in entrance and/or the know-why respectively in fluidic junction in leading to narrow portion with a filter.By the fluidic junction in the entrance before the narrow portion of venturi choke valve, in the narrow portion leading to venturi choke valve or even at the two arranges a filter, it is possible to significantly decrease granule and enter into the risk in venturi choke valve.Because the flow diameter of venturi choke valve is typically in 0.1mm to 2mm in this region, thus granule can be fixed on there and may result in the blocking of backflow portion.Because reflux line blocks, this causes functional lesion.In contrast, by the filter of at least one fine mesh arranged according to the present invention, hence it is evident that reduce because the interference that causes of the entrance of granule.
In contrast, according to the fault that there occurs the venturi choke valve blocking caused because of granule in the fuel injection system of DE10154133C1.Although here by filter being connected to metering units and overflow valve upstream stops from the granule storing container, but the granule brought into later is not removed.
In the improvement project of the present invention, each filter is mesh sieve.Alternatively, each filter is the sieve of laser manufacture.Construct the fine mesh filter with lower manufacturing cost in both circumstances.
Correspondingly, a configuration of the present invention is provided with delivery pump, delivery pump by fuel from storing container transport to the area of low pressure of high pressure fuel pump and in the entrance of metering units.It is provided with enough fuel by the area of low pressure of this structure, metering units and high pressure fuel pump.Preferably, the overflow pipe of overflow valve is here gone out from the outlet branches of metering units.By this measure, because of the metering of metering units, excess electron excess fraction is refluxed the fuel quantity always provided by delivery pump by overflow valve.Advantageously, excess quantity is back in the input channel of delivery pump through the overflow valve the first stress level from overflow pipe, and is transported to from the second stress level in backflow portion.Therefore, first again returned to conveying before delivery pump, then just start to be transported to storage container from bigger capacity of returns.Thus, by being depressurized in reflux line by fuel can reduce, with storing in container and being then again compressed to low pressure, the loss occurred in other respects.
In the improvement project of the present invention, between the fluidic junction and the entrance of delivery pump in backflow portion, it is provided with throttle point.The advantage so arranged is because reflux line and converges to the pressure oscillation occurred before the entrance of delivery pump in the input channel of delivery pump and can be relaxed as much as possible.
Another favourable configuration according to the present invention, delivery pump is gear pump.It is achieved in firm and is reliably carried out delivery pump.
It addition, with reference to the accompanying drawings, the measure that the present invention improves it is explained in more detail together with the description of the preferred embodiments of the present invention.
Accompanying drawing explanation
Fig. 1 schematic diagram according to the fuel injection system of the present invention according to the preferred embodiment of the invention；With
The Fig. 2 sectional view according to the venturi choke valve region of the fuel injection system of Fig. 1.
Detailed description of the invention
Figure 1 illustrates the schematic diagram of fuel injection system for IC engine according to the present invention according to the preferred embodiment of the invention.According in the fuel injection system of the present invention, by delivery pump 1, it is preferable that be embodied as gear pump, being drawn from storing container 2 by the fluid that form is fuel, be transported to high pressure fuel pump 3, high pressure fuel pump is made up of area of low pressure 4 and high-pressure area 5.Fuel flows through the area of low pressure 4 here only represented with camera bellows, and is used to lubrication and cooling motion parts.And then, fuel arrives the entrance 6 of metering units 7, and by service 8, and the inlet valve 9 being arranged in service 8 is supplied to the high-pressure area 5 not being shown specifically equally, metering units 7 measures the fuel quantity required for corresponding internal combustion engine operation.Inside high-pressure area 5, then the fuel of supply be compressed to high pressure with methods known for professionals and be then supplied to pressure accumlator 10 only shown partially here, and fuel under high pressure can be taken out from pressure accumlator 10 so that internal combustion engine operation.
Additionally, as being clearly seen from Fig. 1, branch out an overflow pipe 11 from the entrance 6 of metering units 7, overflow pipe 11 be provided with overflow valve 12.This overflow valve 12 has the piston of symbolization here, from the first stress level reached in overflow pipe 11, this piston makes fuel be flowed into reflux line 13 from overflow pipe 11, and from the second stress level reached in overflow pipe 11 additional flow to lead to store container 2 backflow portion 14 in.The piston of overflow valve 12 here go backward through spring and in reflux line 13 dominant pressure-loaded, wherein, alternatively, it is also contemplated that spring and in backflow portion 14 dominant pressure loaded backward by the corresponding connection to backflow portion 14.Reflux line 13 converges in the service 15 of delivery pump 1, make from the first stress level reached in overflow pipe 11, first it is back to the pressure in feed path 15 and in overflow pipe 11 when raising further, is also additionally back to and leads in the backflow portion 14 storing container 2.In order to improve the pressure in overflow pipe 11, carry almost constant fuel quantity to realize here by delivery pump 1 to metering units 7, but only the fuel fractions required for internal combustion engine operation is transferred to high-pressure area 5 from metering units 7.
First passing through reflux line 13 by low-pressure fuel and be back in the input channel 15 of delivery pump 1, being lost in of fuel injection system can be reduced here.In order to make the pressure oscillation in the entrance area of delivery pump 1 keep low as far as possible, throttle point 16 is set between the fluidic junction and the entrance of delivery pump 1 of reflux line 13.Additionally also having, the discharge line 17 from the area of low pressure 4 of high pressure fuel pump 3 is flowed in backflow portion 14.
It addition, be apparent from after metering units 7 to branch out zero conveyance conduit 18 from the service 8 leading to high-pressure area 5 from Fig. 1.Should be implemented without fuel high pressure generate and be correspondingly supplied to high-pressure area 5 also without fuel running status under, will be occurred yet by metering units 7 by this zero conveyance conduit 18 and unescapable leakage rate discharge.Because these leakage rates otherwise will accumulate in service 8, and start from the amount determined and the pressure opening inlet valve 9 is provided as its result, and therefore, it is possible to being flowed in high-pressure area 5.This zero conveyance conduit 18 converges in backflow portion 14, and wherein, backflow portion 14 has venturi choke valve 19 in this confluence area, is shown specifically venturi choke valve 19 in fig. 2.
From Fig. 2 it is evident that zero conveyance conduit 18 imports the region of narrow portion 20 of venturi choke valve 19.Thus achieve, when being carried by metering units 7 zero this cause corresponding big fuel quantity by overflow valve 12 and and then flow also by backflow portion 14, owing to flowing through the fuel in backflow portion 14 and consequent Venturi effect, leaked fuel from zero conveyance conduit 18 by narrow portion 20 region constitute negative pressure and be inhaled in backflow portion 14.It is achieved in emptying zero conveyance conduit 18 better so that the unlatching pressure of the inlet valve 9 before high-pressure area 5 can advantageously be lowered.
As feature, it is respectively provided with fine mesh filter 22 and 23 now according in fluidic junction in the entrance 21 of venturi choke valve 19 and in narrow portion 20 of the fuel injection system of the present invention.These filters 22 and 23 here can be respectively configured to the sieve of mesh sieve or laser manufacture.Effectively stoped by the two filter 22 and 23 granule to enter in narrow portion 20 region of venturi choke valve 19, otherwise cause that backflow portion 14 is blocked, and then cause the substantive functional lesion of the fuel injection system of internal combustion engine.
Therefore, by substantially reducing the being disturbed property of the fuel injection system of internal combustion engine according to the configuration of the present invention.
Claims (5)
1. the fuel injection system of internal combustion engine, it includes high pressure fuel pump (3), metering units (7) is connected in the upstream of the high-pressure area (5) of described high pressure fuel pump, the fuel quantity carried from storage container (2) is supplied to described high-pressure area (5) by service (8) metering by described metering units, wherein, one zero conveyance conduits (18) are branched out from described service (8), described zero conveyance conduit converges in backflow portion (14) in narrow portion (20) region of venturi choke valve (19), it is characterized in that,
Described venturi choke valve (19) not only respectively has a filter (22,23) in entrance (21) but also in the fluidic junction in described narrow portion (20)；Arranging delivery pump (1), fuel is transported to the entrance (6) that the area of low pressure (4) of described high pressure fuel pump (3) neutralizes described metering units (7) by described delivery pump from described storage container (2)；Branch out the overflow pipe (11) of an overflow valve (12) from the entrance (6) of described metering units (7), described overflow valve (12) make the fuel the first stress level from described overflow pipe (11) be back in the input channel (15) of described delivery pump (1) and from the second stress level by reflux line (13) and be back in described backflow portion (14).
2. fuel injection system according to claim 1, it is characterised in that
Each filter (22,23) is mesh sieve.
3. fuel injection system according to claim 1, it is characterised in that
Each filter (22,23) is the sieve of laser manufacture.
4. according to the fuel injection system one of claims 1 to 3 Suo Shu, it is characterised in that
Between the fluidic junction and the entrance of described delivery pump (1) of described reflux line (13), throttle point (16) is set.
5. according to the fuel injection system one of claims 1 to 3 Suo Shu, it is characterised in that
Described delivery pump (1) is gear pump.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010043531.7 | 2010-11-08 | ||
| DE102010043531A DE102010043531A1 (en) | 2010-11-08 | 2010-11-08 | Fuel injection system of an internal combustion engine |
| PCT/EP2011/066410 WO2012062508A2 (en) | 2010-11-08 | 2011-09-21 | Fuel injection system of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103201496A CN103201496A (en) | 2013-07-10 |
| CN103201496B true CN103201496B (en) | 2016-07-13 |
Family
ID=44674797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180053426.8A Expired - Fee Related CN103201496B (en) | 2010-11-08 | 2011-09-21 | The fuel injection system of internal combustion engine |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP2638276B1 (en) |
| JP (1) | JP5719444B2 (en) |
| KR (1) | KR20130139985A (en) |
| CN (1) | CN103201496B (en) |
| DE (1) | DE102010043531A1 (en) |
| RU (1) | RU2013126194A (en) |
| WO (1) | WO2012062508A2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013208707A1 (en) * | 2013-05-13 | 2014-11-13 | Robert Bosch Gmbh | Overflow valve for a high pressure pump in a fuel injection system |
| DE102013226649A1 (en) * | 2013-12-19 | 2015-06-25 | Robert Bosch Gmbh | Fuel supply device of a fuel injection system of an internal combustion engine and overflow valve to it |
| DE102015212121A1 (en) * | 2015-06-30 | 2017-01-05 | Robert Bosch Gmbh | Method for determining operating parameters of a fuel pump |
| US11268455B2 (en) | 2016-09-09 | 2022-03-08 | Walbro Llc | Throttle body with fluid flow control |
| CN106640449B (en) * | 2016-12-27 | 2018-05-29 | 清华大学 | For the self-priming electronic control low-pressure fuel gauge of internal combustion engine |
| CN108150324B (en) * | 2017-12-27 | 2020-01-03 | 潍柴动力股份有限公司 | High-pressure oil pump for engine fuel system and engine fuel system |
| CN111878272B (en) * | 2020-06-30 | 2021-10-29 | 潍柴动力股份有限公司 | Exhaust device and exhaust method for high-pressure oil pump |
| CN114017223B (en) * | 2021-11-03 | 2023-03-24 | 南岳电控（衡阳）工业技术股份有限公司 | Oil discharge structure and oil supply system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10154133C1 (en) * | 2001-11-03 | 2003-02-13 | Bosch Gmbh Robert | Common-rail fuel system for IC engine has fuel fed from between fuel metering device and high pressure fuel pump fed to low pressure region with pressure reduction device |
| CN102472219A (en) * | 2009-06-30 | 2012-05-23 | 罗伯特·博世有限公司 | Fuel system for an internal combustion engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11257188A (en) * | 1998-03-10 | 1999-09-21 | Hitachi Ltd | Fuel return valve |
| IT1310754B1 (en) * | 1999-11-30 | 2002-02-22 | Elasis Sistema Ricerca Fiat | VALVE SYSTEM FOR INLET PRESSURE CONTROL OF A LIQUID IN A HIGH PRESSURE PUMP, AND RELATED VALVE |
| JP2007239684A (en) * | 2006-03-10 | 2007-09-20 | Bosch Corp | Fuel supply pump |
-
2010
- 2010-11-08 DE DE102010043531A patent/DE102010043531A1/en not_active Withdrawn
-
2011
- 2011-09-21 RU RU2013126194/06A patent/RU2013126194A/en not_active Application Discontinuation
- 2011-09-21 EP EP11760478.5A patent/EP2638276B1/en active Active
- 2011-09-21 KR KR1020137011844A patent/KR20130139985A/en not_active Application Discontinuation
- 2011-09-21 WO PCT/EP2011/066410 patent/WO2012062508A2/en active Application Filing
- 2011-09-21 JP JP2013534230A patent/JP5719444B2/en not_active Expired - Fee Related
- 2011-09-21 CN CN201180053426.8A patent/CN103201496B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10154133C1 (en) * | 2001-11-03 | 2003-02-13 | Bosch Gmbh Robert | Common-rail fuel system for IC engine has fuel fed from between fuel metering device and high pressure fuel pump fed to low pressure region with pressure reduction device |
| CN102472219A (en) * | 2009-06-30 | 2012-05-23 | 罗伯特·博世有限公司 | Fuel system for an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012062508A3 (en) | 2012-07-12 |
| EP2638276B1 (en) | 2016-08-17 |
| KR20130139985A (en) | 2013-12-23 |
| EP2638276A2 (en) | 2013-09-18 |
| JP2013545914A (en) | 2013-12-26 |
| CN103201496A (en) | 2013-07-10 |
| WO2012062508A2 (en) | 2012-05-18 |
| DE102010043531A1 (en) | 2012-05-10 |
| RU2013126194A (en) | 2014-12-20 |
| JP5719444B2 (en) | 2015-05-20 |
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