CN102422009A - Method for filling a fuel system for motor vehicles - Google Patents
Method for filling a fuel system for motor vehicles Download PDFInfo
- Publication number
- CN102422009A CN102422009A CN2010800212217A CN201080021221A CN102422009A CN 102422009 A CN102422009 A CN 102422009A CN 2010800212217 A CN2010800212217 A CN 2010800212217A CN 201080021221 A CN201080021221 A CN 201080021221A CN 102422009 A CN102422009 A CN 102422009A
- Authority
- CN
- China
- Prior art keywords
- fuel
- dosing device
- pump
- fuel system
- pressure service
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 238000005429 filling process Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- 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
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
-
- 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
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0275—Arrangement of common rails
- F02M63/028—Returnless common rail system
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a method for filling a fuel system (10) for motor vehicles. The fuel system (10) has a pre-delivery pump (26), a high-pressure pump (32), a metering device (34) arranged fluidically between the pre-delivery pump (26) and the high-pressure pump (32), a filter (28) arranged upstream of the high-pressure pump (32), and a zero delivery throttle (36), wherein the zero delivery throttle (36) connects an outlet of the metering device (34) to a region placed upstream of the pre-delivery pump (26), in which fuel is introduced into the region upstream of the pre-delivery pump (26). The metering device (34) is closed during filling.
Description
Technical field
The present invention relates to a kind of according to method claim 1 preamble, that be used to fill the fuel system that is used for Motor Vehicle.In addition, the fuel system that is used for internal-combustion engine is a part of the present invention.
Background technique
DE 199 26 308 A1 illustrate a common rail fuel system, and in this common rail fuel system, the prime transfer pump is used for lubricated high-pressure service pump through fuel conduit with drive chamber or the crank chamber that fuel stream passes high-pressure service pump from one jar of conveying.On the flow direction of fuel, after drive chamber or crank chamber, be provided with on the one hand to backflow portion jar, lubrication flow and be provided with on the other hand to dosing device with further to delivery section conveying chamber, surveying flow of high-pressure service pump.This prime transfer pump is mechanically driven.
Between the conveying chamber of dosing device and high-pressure service pump, tell one zero delivery section, one zero conveying throttle valve are set in this zero delivery section and are somebody's turn to do zero delivery section and on the suction side of prime transfer pump, lead in the fuel conduit.In this fuel system, so-called leakage appears on the flow regulator in dosing device.These leak through zero carries throttle valve to transfer out.Zero carry throttle valve in the zone of high-pressure service pump and suction valve dosing device, to realize lower stress level through this.At this, the cracking pressure of this suction valve must be located at respect to carried on the required driving pressure of throttle valve by zero in the safe distance of the stress level of link position.Combine with the prime transfer pump of machinery, stress level is lower than the stress level in the backflow portion in inflow portion.
In a plurality of such fuel system, additionally between prime transfer pump and dosing device, be provided with a filter, a preferred secondary filter is so that the high-pressure service pump and the whole high-pressure area of protection fuel system avoid the influence from the foul of fuel.
Safeguard fuel system for example filter change the back or behind the repairing measure on the fuel system, flow through at the inner fuel of fuel system and often interrupt at least, perhaps whole fuel system does not have fuel.Infringement is arranged on the operation subsequently of the pump (prime transfer pump, high-pressure service pump) in the fuel loop consumingly thus, and that is to say that pump does not have can be by regulation work.In order to avoid this situation, especially the prime transfer pump with machinery is provided with the fuel hand pump in combination, and fuel system can manually be filled with the fuel from jar by the fuel hand pump.
Summary of the invention
Task of the present invention is that proposition one simply and reliably is used for the method for filling fuel system.
The method and the fuel system of the characteristic of this task through having claim arranged side by side solve.Favourable expanded configuration provides in appurtenance.In addition, be arranged in following specification and accompanying drawing for the important characteristic of the present invention, wherein, these characteristics are important for the present invention by oneself but also with different combinations ground not only, not explanation at length respectively to this.
From fuel pot, in fuel system, provide two kinds of feasibilities in principle, so that fill the drive chamber or the crank chamber of high-pressure service pump.First kind of feasibility is through the path of zero passage conveying section stream valve and dosing device, and second kind of feasibility is through the prime transfer pump of machinery and the path of filter.From then on set out according to the present invention, common dosing device is normally opened under currentless state.The basis of the present invention's design is to be responsible for dosing device during filling, to close so that seal the path of first kind of feasibility thus.The fuel that is manually pumped thus only is transported in drive chamber or the crank chamber with undesirably the same filter through there existence usually through the prime transfer pump by the strong hand.This path is corresponding to the path of fuel when internal-combustion engine normally moves.Because the path at the fuel that is used for pumping also is provided with the prime transfer pump, thus also unnecessary for the start request of prime transfer pump raising, because the prime transfer pump is also filled with fuel with being forced.Can use in this wise according to the method for the invention, making does not need additional member.Also cost is advantageously used the present invention thus.
Another advantage is obtained by this fact, promptly in most cases is lower than the stress level in (the perhaps high-pressure service pump of rail) return line at the stress level to the inflow pipeline of prime transfer pump.The present invention can realize carrying throttle valve to be arranged in this inflow pipeline with zero; This has at first allowed lower cracking pressure of the inflow valve of high-pressure service pump and therefore higher efficient when the slow-speed of revolution, must make safety check carry between the throttle valve and switch flowing into pipeline and zero and needn't be when filling reflux for fear of fuel.
In first expanded configuration of the present invention, be provided with, this dosing device is controlled in the closed position for filling process.This dosing device is configured to a proportional spring-loaded guiding valve usually, and this guiding valve is correspondingly controlled for dosage to high-pressure service pump fuel stream and when no current, opened.Under the situation of filling fuel system, dosing device is controlled in the position cut out through galvanization on one's own initiative.This is not advantageously needed member or device, these members or device are not present in the Motor Vehicle perhaps at least for safeguarding or the maintenance status needs as yet.
Therefore preferred proposition the, this dosing device are connected on the fuel system through definite equipment especially filling device or diagnostic device and perhaps are controlled in the closed position on the internal-combustion engine.They are for two kinds of required devices of filling process.
Can consider that also dosing device is controlled in the closed position when opening the cover plate of fuel system and/or when connecting igniting.The unlatching of engine hood also can cause the control that is used to close dosing device.Yet when starter motor started, device for controlling engine was born the control of dispensing apparatus again.This means that closing basically of dosing device automatically takes place.
By consideration, dosing device cuts out when no current.This means the mode of execution that substitutes with respect to common dosing device application one, this mode of execution can move with reversing, that is to say through galvanization to be unlocked.In this case in order to fill the measure that need not add.
Description of drawings
Explain embodiments of the invention for example according to accompanying drawing below.Unique accompanying drawing illustrates the explanatory view of fuel system.
Embodiment
Accompanying drawing illustrates a fuel system 10, and this fuel system is designed to a so-called common-rail injection system of internal-combustion engine 12.In order to drive internal-combustion engine 12; Fuel under high pressure is transported in the fuel distributor (rail altogether) 14 and is stored in the there; Wherein, fuel injection system 16 connects fuel distributor 14, and fuel injection system under high pressure injects fuel in the firing chamber 18 of internal-combustion engine 12.
At this, fuel is carried from the fuel pot 20 of Motor Vehicle.On flow direction, be provided with two towards the safety check 21a of fuel pot 20 lockings and 21b, suction valve 24, machinery or electrically driven (operated) prime transfer pump 26 and fuel filter 28, preferred secondary filter at fuel transport path from fuel pot 20 beginning.This fuel path leads in the driving or crank chamber 30 of high-pressure service pump 32 for lubricated driver part, and this high-pressure service pump preferable configuration is mechanically operated radial piston pump.The trend of fuel is represented with arrow in the accompanying drawings when fuel system 10 normal operations.
On flow direction, fuel is transferred to pass and drives or crank chamber 30 and finally be delivered to dosing device 34, and this dosing device is configured to controllable, proportional spring-loaded guiding valve.Promptly this dosing device 34 is being arranged between prime transfer pump 26 and the high-pressure service pump 32 and is being used to measure the fuel that is used for high-pressure service pump 32 on the flow or on the hydraulic pressure.Fuel stream is divided into two parts in the downstream of dosing device 34.Tell one zero delivery section on the one hand, in this zero delivery section, be provided with 1 and carry throttle valve 36.If this dosing device cuts out, the leakage of dosing device 34 is transferred go back to the suction side that perhaps is delivered to prime transfer pump 26 in the jar 20 again in this zero delivery section.Tell a delivery line on the other hand, in this delivery line, fuel is transported in the conveying chamber 40 of high-pressure service pump 32 through suction valve 38.Fuel under high pressure is brought in the fuel distributor 14 through safety check 42 subsequently.
In order to safeguard fuel system 10, for example change filter perhaps for the repairing measure on the fuel system 10, fuel in most cases must be discharged from fuel system.The prime transfer pump 26 that in the fuel loop, is provided with thus and the operation subsequently of high-pressure service pump 32 become difficult; That is to say that pump 26 and 30 can not work according to the rules; Because for example can not guarantee drive with crank chamber 30 in lubricated, and because of prime transfer pump suction air at first only.For fear of this situation, propose: before fuel system 10 is moved once more, between two safety check 21a and 21b, can connect a fuel hand pump 22, fuel system 10 can manually be filled with the fuel from jar 20 by this fuel hand pump.
Because this dosing device 34 is opened under currentless state; Do not having under the situation of countermeasure when filling through hand pump 22; Being released to the driving of high-pressure service pump 32 or the path in the crank chamber 30 through dosing device 34, exactly is under the situation of walking around filter 28.This means the fuel that not to filter arrive drive or crank chamber 30 in and arrive in the whole high-pressure area in arriving fuel distributor 14 at run duration subsequently.In addition, zero conveying throttle valve 36 can be blocked.This can cause on high-pressure service pump 32, on the safety check 42 and infringement in internal-combustion engine 12 and/or obstruction.
At fuel after fuel system 10 is discharged; Dosing device 34 on purpose cuts out and therefore being released as unique feasible path through suction valve 24, prime transfer pump 26 with through the path of filter 28 of fuel, as fuel stream also is set when the internal-combustion engine 12 normal operations.
In the current mode of execution that illustrates, but the function electric control of dosing device 34.Therefore when in order for example to fill diagnostic device or hand pump 22 when being connected to this fuel system 10, dosing device 34 automatically is energized and flows and cut out thus.At this, be pointed out here that, also can provide a mode of execution of fuel system, yet hand pump is activated not when normally moving by connection enduringly in this embodiment.In this case, as long as this diagnostic device is connected or hand pump is activated, dosing device just is energized stream.
Can consider also that alternatively hand pump 22 comprises a sensor or switch, this sensor or switch identification one handled, and dosing device 34 has only when manipulation of physical hand pump 32 by galvanization automatically.
Consider that equally alternately at the cover plate of opening fuel system 10 or when opening the engine hood of the Motor Vehicle that fuel system 10 and internal-combustion engine 12 wherein are housed, dosing device 34 is just by galvanization automatically.When connecting the Motor Vehicle igniting, dosing device 34 also can be by galvanization automatically, and wherein, yet device for controlling engine must be born the control function of dosing device 34 again when starter motor starts.
In the alternate embodiments of dosing device 34, dosing device also can be worked with reversing, makes dosing device when galvanization, open, and that is to say that it closes under no current state.At this, when filling fuel system 10, only need handle hand pump 22, dosing device cuts out.
Claims (6)
1. be used to fill the method for the fuel system (10) that is used for internal-combustion engine; This fuel system has a prime transfer pump (26), a high-pressure service pump (32), one and carries throttle valve (36) being arranged on the filter (28) and 1 that dosing device (34), between this prime transfer pump (26) and this high-pressure service pump (32) is arranged on this high-pressure service pump (32) upper reaches on the flow; Should zeroly carry throttle valve that the outlet of said dosing device (34) is connected with the zone that is positioned at these prime transfer pump (26) upper reaches; Fuel is imported into this zone that is arranged in these prime transfer pump (26) upper reaches in the method; It is characterized in that said dosing device (34) cuts out during said filling.
2. according to the method for claim 1, it is characterized in that said dosing device (34) is controlled in the closed position for filling process.
3. according to the method for claim 2, it is characterized in that said dosing device (34) is controlled in the said closed position through the connection of definite equipment especially filling device or diagnostic device.
4. according to the method for claim 2 or 3, it is characterized in that said dosing device (34) is controlled in the said closed position when opening the cover plate of this fuel system (10) and/or when connecting igniting.
5. according to the method for claim 1, it is characterized in that said dosing device cuts out when no current.
6. be used for the especially fuel system (10) of the internal-combustion engine of Motor Vehicle (12); This fuel system has a prime transfer pump (26), a high-pressure service pump (32), one and carries throttle valve (36) being arranged on the filter (28) and 1 that dosing device (34), between this prime transfer pump (26) and this high-pressure service pump (32) is arranged on this high-pressure service pump (32) upper reaches on the flow; Should zeroly carry throttle valve that the outlet of said dosing device (34) is connected with the zone that is positioned at these prime transfer pump (26) upper reaches; It is characterized in that said dosing device (34) cuts out or can cut out during filling this fuel system (10) with fuel.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009003051.4 | 2009-05-13 | ||
| DE200910003051 DE102009003051A1 (en) | 2009-05-13 | 2009-05-13 | Method for filling a fuel system for motor vehicles |
| PCT/EP2010/053676 WO2010130491A1 (en) | 2009-05-13 | 2010-03-22 | Method for filling a fuel system for motor vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102422009A true CN102422009A (en) | 2012-04-18 |
| CN102422009B CN102422009B (en) | 2014-07-16 |
Family
ID=42238604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080021221.7A Expired - Fee Related CN102422009B (en) | 2009-05-13 | 2010-03-22 | Method for filling a fuel system for motor vehicles |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2430302B1 (en) |
| CN (1) | CN102422009B (en) |
| DE (1) | DE102009003051A1 (en) |
| WO (1) | WO2010130491A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246424A (en) * | 2016-08-29 | 2016-12-21 | 潍柴动力股份有限公司 | High-pressure oil pump, engine fuel oil system and electromotor |
| CN106640449A (en) * | 2016-12-27 | 2017-05-10 | 清华大学 | Self-suction electric control low pressure fuel counter for internal combustion engine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600130222A1 (en) * | 2016-12-22 | 2018-06-22 | Bosch Gmbh Robert | PUMP UNIT FOR FUEL SUPPLY FROM A TANK TO AN INTERNAL COMBUSTION ENGINE |
| IT201800007435A1 (en) * | 2018-07-23 | 2020-01-23 | FUEL SUPPLY SYSTEM FROM A TANK TO AN INTERNAL COMBUSTION ENGINE AND METHOD FOR CHECKING THIS SYSTEM |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19926308A1 (en) * | 1999-06-09 | 2000-12-21 | Bosch Gmbh Robert | Pump assembly for fuel |
| US20030034010A1 (en) * | 2001-08-08 | 2003-02-20 | Andreas Kellner | Method for operating an internal combustion engine, in particular with direction injection, computer program, control and/or regulating unit, and fuel system for an internal combustion engine |
| CN1605747A (en) * | 2003-10-02 | 2005-04-13 | 本田技研工业株式会社 | Fuel pump shell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19746563A1 (en) * | 1997-10-22 | 1999-04-29 | Bosch Gmbh Robert | Fuel injection system for IC engine |
| DE102007000855B4 (en) * | 2006-12-27 | 2020-06-10 | Denso Corporation | Fuel delivery device and storage fuel injection system having this |
-
2009
- 2009-05-13 DE DE200910003051 patent/DE102009003051A1/en not_active Withdrawn
-
2010
- 2010-03-22 CN CN201080021221.7A patent/CN102422009B/en not_active Expired - Fee Related
- 2010-03-22 WO PCT/EP2010/053676 patent/WO2010130491A1/en active Application Filing
- 2010-03-22 EP EP10709732.1A patent/EP2430302B1/en not_active Not-in-force
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19926308A1 (en) * | 1999-06-09 | 2000-12-21 | Bosch Gmbh Robert | Pump assembly for fuel |
| US20030034010A1 (en) * | 2001-08-08 | 2003-02-20 | Andreas Kellner | Method for operating an internal combustion engine, in particular with direction injection, computer program, control and/or regulating unit, and fuel system for an internal combustion engine |
| CN1605747A (en) * | 2003-10-02 | 2005-04-13 | 本田技研工业株式会社 | Fuel pump shell |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246424A (en) * | 2016-08-29 | 2016-12-21 | 潍柴动力股份有限公司 | High-pressure oil pump, engine fuel oil system and electromotor |
| CN106246424B (en) * | 2016-08-29 | 2019-07-30 | 潍柴动力股份有限公司 | High-pressure oil pump, engine fuel oil system and engine |
| CN106640449A (en) * | 2016-12-27 | 2017-05-10 | 清华大学 | Self-suction electric control low pressure fuel counter for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2430302A1 (en) | 2012-03-21 |
| DE102009003051A1 (en) | 2010-11-18 |
| WO2010130491A1 (en) | 2010-11-18 |
| CN102422009B (en) | 2014-07-16 |
| EP2430302B1 (en) | 2015-08-05 |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 |
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| CF01 | Termination of patent right due to non-payment of annual fee |