CN103201496A - Fuel injection system of an internal combustion engine - Google Patents

Fuel injection system of an internal combustion engine Download PDF

Info

Publication number
CN103201496A
CN103201496A CN2011800534268A CN201180053426A CN103201496A CN 103201496 A CN103201496 A CN 103201496A CN 2011800534268 A CN2011800534268 A CN 2011800534268A CN 201180053426 A CN201180053426 A CN 201180053426A CN 103201496 A CN103201496 A CN 103201496A
Authority
CN
China
Prior art keywords
injection system
fuel
fuel injection
pressure
pump
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.)
Granted
Application number
CN2011800534268A
Other languages
Chinese (zh)
Other versions
CN103201496B (en
Inventor
S·安布洛克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN103201496A publication Critical patent/CN103201496A/en
Application granted granted Critical
Publication of CN103201496B publication Critical patent/CN103201496B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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 invention relates to a fuel injection system of an internal combustion engine, comprising a high pressure fuel pump (3), wherein a metering device (7) is connected upstream of the high pressure region (5) of said high pressure fuel pump and said metering device (7) feeds a fuel quantity conveyed from a supply tank (2) in metered quantities to the high-pressure region (5) via a feed line (8). A zero delivery line (18) branches from the feed line (8) and in the region of a constriction (20) of a Venturi throttle (19) opens into a return line (14), wherein furthermore the Venturi throttle (19) comprises a respective filter (22, 23) in an intake (21) and/or in a junction portion leading into the constriction (20).

Description

The fuel injection system of internal-combustion engine
Technical field
The present invention relates to a kind of fuel injection system of internal-combustion engine, it comprises a high pressure fuel pump, upstream in the high-pressure area of high pressure fuel pump connects batching unit, this batching unit metering will be supplied with by service metering ground from the fuel quantity that reservoir vessel is carried and give the high-pressure area, wherein, zero conveyance conduit branches out from service, and this zero conveyance conduit converges in the backflow portion in narrow zone of venturi throttle valve.
Background technique
The present majority of the fuel injection system of modern diesel engines is configured to common-rail injection system.In this system, cylinder draws fuel under high pressure by each fuel injector from pressure accumlator, and pressure accumlator provides the fuel under high pressure of respective amount by the high-pressure area of high pressure fuel pump with regard to its that aspect.Here, batching unit generally is connected the upstream, high-pressure area of high pressure fuel pump, and batching unit measures at needed fuel quantity each time of running of diesel engine, thereby has only the fuel quantity that needs to be compressed to high pressure and be transported in the high-pressure storage.Under the running state of determining, be transported to fuel quantity in the high-pressure storage yes zero.Under so-called zero situation of carrying, there is not fuel to supply with high-pressure area to high pressure fuel pump by batching unit yet.But this moment, because reveal, the fuel stream of the littler fuel quantity by batching unit may not be completely blocked.Because this reason, generally the service from the high-pressure area that supplies to high pressure fuel pump branches out zero conveyance conduit, and by this zero conveyance conduit, this amount of leakage can be back in the backflow portion.
From the fuel injection system of the known such internal-combustion engine of DE10154133C1, in this fuel injection system, batching unit is connected the upstream of the high-pressure area of high pressure fuel pump.By this batching unit, each fuel quantity that will compress and that be transported in the high-pressure storage measures to the high-pressure area.At this moment, batching unit provides low-pressure fuel by the transfer pump that is positioned at the upstream from reservoir vessel, and these low-pressure fuels are directed to the anterior part of batching unit by filter element.Here, have bypass valve by-pass line and have the lubricating pipe of lubricant oil throttle valve from the entrance branch of batching unit.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 off.By bypass valve and be arranged on bypass valve the inside, the spring force loaded piston, fuel is transported to the backflow portion of fuel injection system from a stress level of determining, so that when the low transfer rate by batching unit or at zero pressure of carrying before also remaining on batching unit under the changeless situation.
Side at the service of the high-pressure area of leading to high pressure fuel pump of batching unit arranges the zero conveyance conduit that another one branches out from service, but carry under the situation zero, by this another one zero conveyance conduit, the amount of leakage that flows by batching unit can be transported in the backflow portion.For the cracking pressure of the suction valve that makes the high-pressure area keeps low as far as possible, in view of the fuel quantity in the work chamber of unlatching before this suction valve of run duration and be transported to pump that follow with it, bigger is yearning, according to the type of venturi throttle valve, constitute zero conveyance conduit and converge in the backflow portion.Here, zero conveyance conduit converges in the backflow portion in narrow zone of this venturi throttle valve.Realize that thus in the zero inner low pressure that forms of the venturi throttle valve of fuel in narrow zone of carrying and flowing by bypass valve and backflow portion, by this low pressure, amount of leakage is inhaled in the backflow portion here.So be even lower under obvious under the situation that is not having the venturi throttle valve with respect to the pressure in the system of conveyance conduit, it is lower that thereby the cracking pressure of the suction valve of high-pressure area may be selected to be, but generation is by mistake opened and amount of leakage flow in the high-pressure area.
Summary of the invention
From aforementioned prior art, task of the present invention is, a kind of fuel injection system of internal-combustion engine is provided, and its interference that is subjected in zero conveyance conduit zone is lowered.
The preamble of this task accessory rights requirement 1 sets out, in conjunction with its distinguishing characteristics solution.Following dependent claims has provided favourable improvement project of the present invention again respectively.
The present invention includes the venturi throttle valve in entrance and/or in the fluidic junction of leading in narrow, respectively have a know-why of a filter.By in the entrance before narrow of venturi throttle valve, leading among narrow of venturi throttle valve fluidic junction or even a filter is set in the two, can reduce the risk that particle enters into the venturi throttle valve significantly.Because the flow diameter of venturi throttle valve generally arrives 2mm at 0.1mm in this zone, thereby particle can be fixed on the there and may cause backflow portion to be stopped up.Because reflux line stops up, this causes functional lesion.In contrast, by the filter of at least one fine mesh arranged according to the present invention, obviously reduce the interference that causes that enters because of particle.
In contrast, in the fuel injection system according to DE10154133C1, taken place because the fault that the venturi throttle valve that particle causes stops up.Though stop particle from reservoir vessel by filter being connected batching unit and bypass valve upstream here, yet the particle of bringing into afterwards is not removed.
In improvement project of the present invention, each filter is the mesh sieve.Alternatively, each filter is the sieve that laser is made.Structure has the fine mesh filter of lower manufacture cost under these two kinds of situations.
Correspondingly, a configuration of the present invention is provided with transfer pump, and transfer pump is transported to the area of low pressure of high pressure fuel pump and in the entrance of batching unit from reservoir vessel fuel.By this structure, the area of low pressure of batching unit and high pressure fuel pump is provided with enough fuel.Preferably, branch out the by-pass line of bypass valve here from the outlet of batching unit.By this measure, the fuel quantity that always provides by transfer pump refluxes by bypass valve because of the metering excess electron excess fraction of batching unit.Advantageously, excess quantity is back in the input pipeline of transfer pump through first stress level of bypass valve from by-pass line, and is transported to the backflow portion from second stress level.Therefore, returned conveying at first again before transfer pump, just begin to be transported to the reservoir vessel from bigger capacity of reflux then.Thus, by in the reflux line that fuel is reduced pressure and in the reservoir vessel and then be compressed to the loss that low pressure can reduce to occur in other respects again.
In improvement project of the present invention, between the entrance of the fluidic junction of backflow portion and transfer pump, be provided with the throttling position.The advantage of She Zhiing is that the pressure surge that took place before the entrance of transfer pump can be relaxed as much as possible because reflux line converges in the input pipeline of transfer pump like this.
According to another favourable configuration of the present invention, transfer pump is gear pump.Realize firmly and reliably implementing transfer pump thus.
In addition, with reference to the accompanying drawings, be explained in more detail the improved measure of the present invention with the description of the preferred embodiments of the present invention.
Description of drawings
Fig. 1 is according to the preferred embodiment of the invention according to the schematic representation of fuel injection system of the present invention; With
Fig. 2 is according to the sectional view in the venturi throttle valve zone of the fuel injection system of Fig. 1.
Embodiment
Shown in Figure 1 according to the preferred embodiment of the invention according to the schematic representation of fuel injection system for IC engine of the present invention.In fuel injection system according to the present invention, by transfer pump 1, preferably be embodied as gear pump, be that the fluid of fuel draws from reservoir vessel 2 with form, be transported to high pressure fuel pump 3, high pressure fuel pump is made of area of low pressure 4 and high-pressure area 5.The area of low pressure 4 that fuel is flowed through and here only represented with camera bellows, and be attracted for lubricated and cooling motion parts.Fuel arrives the entrance 6 of batching unit 7 at interface, and passes through service 8, and the suction valve 9 that is arranged in the service 8 is supplied with the needed fuel quantity of the batching unit 7 corresponding internal combustion engine operations of metering to the high-pressure area 5 that is not shown specifically equally.5 inside in the high-pressure area, the fuel of supply are compressed to high pressure with the known methods of professional workforce then and then supply with and give here the only pressure accumlator 10 shown in the part, can draw fuel under high pressure so that internal combustion engine operation from pressure accumlator 10.
In addition, as seeing that from Fig. 1 is clear by-pass line 11 is furnished with bypass valve 12 from entrance 6 branches of batching unit 7 in by-pass line 11.The piston that these bypass valve 12 dominations here hint with symbol, first stress level from reach by-pass line 11, fuel flow into the reflux line 13 from by-pass line 11, and the second stress level additional flow from reach by-pass line 11 is in the backflow portion 14 of leading to reservoir vessel 2.The piston of bypass valve 12 here backward by spring and in reflux line 13 dominant pressure-loaded, wherein, alternatively, it is also contemplated that spring and dominant pressure in backflow portion 14 by with load corresponding the connection backward of backflow portion 14.Reflux line 13 converges in the service 15 of transfer pump 1, feasible first stress level from reach by-pass line 11, at first be back in the supply passage 15 and the pressure in by-pass line 11 when further raising, also additionally be back in the backflow portion 14 of leading to reservoir vessel 2.In order to improve the pressure in the by-pass line 11, carry almost constant fuel quantity to realize by transfer pump 1 to batching unit 7 here, but from 7 of batching unit the needed fuel share of internal combustion engine operation is transferred to high-pressure area 5.
At first be back in the input pipeline 15 of transfer pump 1 by reflux line 13 by low-pressure fuel, being lost in here of fuel injection system can be reduced.For the pressure surge in the entrance region that makes transfer pump 1 keeps low as far as possible, between the entrance of the fluidic junction of reflux line 13 and transfer pump 1, throttling position 16 is set.Also have in addition, flow in the backflow portion 14 from the discharge conduit 17 of the area of low pressure 4 of high pressure fuel pump 3.
In addition, from Fig. 1 clear find out batching unit 7 after branch out zero conveyance conduit 18 from the service 8 that leads to high-pressure area 5.Under running state, should realize not having the fuel under high pressure generation and correspondingly also not have fuel to supply with to high-pressure area 5, however, by this zero conveyance conduit 18, still take place to discharge by batching unit 7 and unescapable leakage rate.In addition because these leakage rates accumulate in the service 8, and from the amount of determining begin and as it the result and the pressure of opening suction valve 9 is provided, and therefore can flow in the high-pressure area 5.This zero conveyance conduit 18 converges in the backflow portion 14, and wherein, backflow portion 14 has venturi throttle valve 19 in this confluence area, be shown specifically venturi throttle valve 19 in Fig. 2.
See obviously that from Fig. 2 zero conveyance conduit 18 converges in narrow 20 zones of venturi throttle valve 19.Obtain thus carrying under the situation zero, by batching unit 7, the stream of corresponding big fuel quantity by by-pass line 12 and and then also cause by backflow portion 14 because fuel and the consequent Venturi effect by in backflow portion 14, flowing, leaked fuel is inhaled in the backflow portion 14 by constitute low pressure narrow 20 zones from zero conveyance conduit 18.Realize zero conveyance conduit 18 of emptying better thus, make the cracking pressure of the suction valve 9 before high-pressure area 5 advantageously to be lowered.
As characteristics, have fine mesh filter 22 and 23 respectively in the fluidic junction of fuel injection system according to the present invention in the entrance 21 of venturi throttle valve 19 and in narrow 20 now.These filters 22 and 23 can be configured to the sieve of mesh sieve or laser manufacturing here respectively.Stop particle to enter into narrow 20 zones of venturi throttle valve 19 effectively by these two filters 22 and 23, otherwise cause backflow portion 14 blocked, and then cause the substantive functional lesion of the fuel injection system of internal-combustion engine.
Therefore, by configuration according to the present invention substantially reduce internal-combustion engine fuel injection system be subjected to interference.

Claims (8)

1. the fuel injection system of internal-combustion engine, it comprises high pressure fuel pump, (3), high-pressure area at described high pressure fuel pump, (5) upstream connects batching unit, (7), described batching unit will be from reservoir vessel, (2) fuel quantity of Shu Songing passes through service, (8) metering ground is supplied with and is given described high-pressure area, (5), wherein, zero conveyance conduit, (18) from described service, (8) branch out, described zero conveyance conduit is at the venturi throttle valve, (19) narrow portion, (20) converge to backflow portion in the zone, (14) in, it is characterized in that
Described venturi throttle valve (19) respectively has a filter (22,23) in entrance (21) and/or in the fluidic junction in described narrow (20).
2. fuel injection system according to claim 1 is characterized in that,
Each filter (22,23) is the mesh sieve.
3. fuel injection system according to claim 1 is characterized in that,
Each filter (22,23) is the sieve that laser is made.
4. according to each described fuel injection system in the claim 1 to 3, it is characterized in that,
Transfer pump (1) is set, described transfer pump with fuel from the area of low pressure (4) that described reservoir vessel (2) is transported to described high pressure fuel pump (3) neutralizes the entrance (6) of described batching unit (7).
5. according to each described fuel injection system in the aforementioned claim, it is characterized in that,
The by-pass line (11) of bypass valve (12) branches out from the entrance (6) of described batching unit (7).
6. fuel injection system according to claim 5 is characterized in that,
First stress level of described bypass valve (12) from described by-pass line (11) is back in the input pipeline (15) of described transfer pump (1) by reflux line (13), and is back to the described backflow portion (14) from second stress level.
7. fuel injection system according to claim 6 is characterized in that,
Between the entrance of the fluidic junction of described reflux line (13) and described transfer pump (1), throttling position (16) is set.
8. according to each described fuel injection system in the claim 4 to 7, it is characterized in that,
Described transfer pump (1) is gear pump.
CN201180053426.8A 2010-11-08 2011-09-21 The fuel injection system of internal combustion engine Active CN103201496B (en)

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 true CN103201496A (en) 2013-07-10
CN103201496B CN103201496B (en) 2016-07-13

Family

ID=44674797

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201180053426.8A Active 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)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105829695A (en) * 2013-12-19 2016-08-03 罗伯特·博世有限公司 Fuel supply device of a fuel injection system of an internal combustion engine, and overflow valve for the same
CN106321317A (en) * 2015-06-30 2017-01-11 罗伯特·博世有限公司 Method for determining operating parameters of a fuel pump
CN106640449A (en) * 2016-12-27 2017-05-10 清华大学 Self-suction electric control low pressure fuel counter for internal combustion engine
CN108150324A (en) * 2017-12-27 2018-06-12 潍柴动力股份有限公司 For the high-pressure oil pump and engine fuel oil system of engine fuel oil system
CN109690054A (en) * 2016-09-09 2019-04-26 沃尔布罗有限责任公司 Throttling body with fluid flowing control
CN111878272A (en) * 2020-06-30 2020-11-03 潍柴动力股份有限公司 Exhaust device and exhaust method for high-pressure oil pump
CN114017223A (en) * 2021-11-03 2022-02-08 南岳电控（衡阳）工业技术股份有限公司 Oil discharge structure and oil supply system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11257188A (en) * 1998-03-10 1999-09-21 Hitachi Ltd Fuel return valve
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
JP2007239684A (en) * 2006-03-10 2007-09-20 Bosch Corp Fuel supply pump
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11257188A (en) * 1998-03-10 1999-09-21 Hitachi Ltd Fuel return valve
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
JP2007239684A (en) * 2006-03-10 2007-09-20 Bosch Corp Fuel supply pump
CN102472219A (en) * 2009-06-30 2012-05-23 罗伯特·博世有限公司 Fuel system for an internal combustion engine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105829695A (en) * 2013-12-19 2016-08-03 罗伯特·博世有限公司 Fuel supply device of a fuel injection system of an internal combustion engine, and overflow valve for the same
CN105829695B (en) * 2013-12-19 2019-07-16 罗伯特·博世有限公司 The fuel supply device of fuel injection system for IC engine and overflow valve for this
CN106321317A (en) * 2015-06-30 2017-01-11 罗伯特·博世有限公司 Method for determining operating parameters of a fuel pump
CN106321317B (en) * 2015-06-30 2020-08-11 罗伯特·博世有限公司 Method for determining operating parameters of a fuel pump
CN109690054A (en) * 2016-09-09 2019-04-26 沃尔布罗有限责任公司 Throttling body with fluid flowing control
US11268455B2 (en) 2016-09-09 2022-03-08 Walbro Llc Throttle body with fluid flow control
US11781493B2 (en) 2016-09-09 2023-10-10 Walbro Llc Throttle body with fluid flow control
CN106640449A (en) * 2016-12-27 2017-05-10 清华大学 Self-suction electric control low pressure fuel counter for internal combustion engine
CN108150324A (en) * 2017-12-27 2018-06-12 潍柴动力股份有限公司 For the high-pressure oil pump and engine fuel oil system of engine fuel oil system
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
CN111878272A (en) * 2020-06-30 2020-11-03 潍柴动力股份有限公司 Exhaust device and exhaust method for high-pressure oil pump
CN114017223A (en) * 2021-11-03 2022-02-08 南岳电控（衡阳）工业技术股份有限公司 Oil discharge structure and oil supply system

Also Published As

Publication number Publication date
JP2013545914A (en) 2013-12-26
WO2012062508A2 (en) 2012-05-18
WO2012062508A3 (en) 2012-07-12
KR20130139985A (en) 2013-12-23
CN103201496B (en) 2016-07-13
JP5719444B2 (en) 2015-05-20
RU2013126194A (en) 2014-12-20
EP2638276A2 (en) 2013-09-18
EP2638276B1 (en) 2016-08-17
DE102010043531A1 (en) 2012-05-10

Similar Documents

Publication Publication Date Title
CN103201496A (en) Fuel injection system of an internal combustion engine
KR101696498B1 (en) Fuel system for an internal combustion engine
US7874284B2 (en) Fuel supply system having fuel filter installed downstream of feed pump
KR101900981B1 (en) Pump unit for supplying fuel, preferably diesel oil, from a containing tank to an internal combustion engine
CN101182826B (en) Improvement to a fuel-injection system for an internal-combustion engine
CN103210205B (en) Low-pressure circuit for fuel injection system and fuel injection system
CN100455789C (en) Fuel injection device for a internal-combustion engine
US8312862B2 (en) Injection system for an internal combustion engine
CN103201495B (en) The fuel injection system of internal combustion engine
CN108150324A (en) For the high-pressure oil pump and engine fuel oil system of engine fuel oil system
CN105829695B (en) The fuel supply device of fuel injection system for IC engine and overflow valve for this
US20060042598A1 (en) Fuel injection system comprising a pressure intensifier and a delivery rate-reduced low-pressure circuit
DE102010001254A1 (en) Fuel injection device for use as common rail injection system for self-ignition combustion engine, has fuel injector injecting fuel into combustion chamber, where ventilation of device into fuel tank takes place in low-pressure region
CN106246424B (en) High-pressure oil pump, engine fuel oil system and engine
CN207178075U (en) A kind of oil pump oil circuit and diesel car
KR20050090134A (en) Liquefied gas-delivering device for diesel engine
EP3088722B1 (en) Fuel supply device for internal combustion engine
CN104271939B (en) High-pressure fuel pump
CN203532129U (en) Overflow valve and fuel injection system with same
CN107923281B (en) Fuel supply device for engine injection and exhaust gas aftertreatment
CN104350273B (en) Fluid dynamics device and the fuel feed system for including the fluid dynamics device
EP1657429A1 (en) A high-pressure pump for an internal-combustion engine
CN109923298A (en) Conveying equipment for fluid substances
CN105909438A (en) Fuel filter in a fuel injection system
DE102011083482A1 (en) Conveyor system for use in fuel injection system of internal combustion engine for conveying medium, particularly fuel, has check valve inserted in flow connection and comprises reverse switching position and passage switching position

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant