EP2430302A1 - Verfahren zum befüllen eines kraftstoffsystems für kraftfahrzeuge - Google Patents
Verfahren zum befüllen eines kraftstoffsystems für kraftfahrzeugeInfo
- Publication number
- EP2430302A1 EP2430302A1 EP10709732A EP10709732A EP2430302A1 EP 2430302 A1 EP2430302 A1 EP 2430302A1 EP 10709732 A EP10709732 A EP 10709732A EP 10709732 A EP10709732 A EP 10709732A EP 2430302 A1 EP2430302 A1 EP 2430302A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- metering device
- fuel
- pump
- fuel system
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 8
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007858 starting material Substances 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
- 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
Definitions
- the invention relates to a method for filling a fuel system for an internal combustion engine according to the preamble of claim 1.
- part of the invention is a fuel system for an internal combustion engine.
- DE 199 26 308 A1 shows a common rail fuel system, in which a prefeed pump a fuel flow via a fuel line from a tank through a drive or crank chamber of a high-pressure pump for lubrication
- 35 pressure level of the connection position are.
- the pressure level in the inlet is lower than in the return.
- a filter preferably a fine filter, is additionally arranged between the prefeed pump and the metering device in order to protect the high-pressure pump and the entire high-pressure region of the fuel system from contamination from the fuel.
- Pre-feed pumps Provide fuel hand pumps that can manually fill the fuel system with fuel from the tank.
- the object of the invention is to provide a simple and safe method for filling the fuel system.
- the fuel system for filling the drive or crankcase of the high-pressure pump.
- the first possibility is the path over the zero feed throttle and the metering device
- the second possibility is the path over the mechanical one Pre-feed pump and the filter.
- conventional metering devices are normally open in the de-energized state. The invention is therefore based on the idea to ensure that the metering device is closed during filling in order to avoid the path of the
- Another advantage results from the fact that the pressure level in the inlet to the prefeed pump is usually lower than in a return (from the rail or the high-pressure pump).
- the invention makes it possible to arrange the zero feed throttle in this inlet, resulting in a lower opening pressure of
- the metering device for the filling process is controlled in the closed position.
- the metering device is usually designed as a proportional spring-loaded slide valve, which is controlled accordingly for metering the fuel flow to the high-pressure pump and de-energized
- Metering device actively controlled by energization in the closed position.
- the metering device is controlled by the connection of certain devices to the fuel system or the internal combustion engine, in particular a filling device or a diagnostic device in the closed position. These are both 5 facilities that are needed anyway for the filling process.
- the metering device is controlled when opening a cover of the fuel system and / or when switching on an ignition in the closed position. Also, opening an engine hood could trigger the L 0 control to close the metering device.
- the drawing shows a fuel system 10 which is suitable for a so-called common rail
- Injection system of an internal combustion engine 12 is designed.
- fuel is conveyed under high pressure into a fuel rail (common RaN) 14 and stored there, wherein at the fuel rail 14 fuel injection devices 16 are connected, the fuel below
- common RaN common RaN
- the fuel is conveyed from a fuel tank 20 of a motor vehicle. In the flow direction are in the fuel delivery path from the fuel tank 20 two to the fuel tank 20 out blocking check valves 21 a and 21 b, a suction throttle 35 24, a mechanically or electrically operated feed pump 26 and a Kraft fuel i ner 28, preferably a fine filter arranged.
- the fuel path opens for lubricating drive parts in a drive or crank chamber 30 of a high-pressure pump 32, which is preferably designed as a mechanically driven radial piston pump.
- the course of the fuel in normal operation 5 of the fuel system 10 is indicated in the drawing with arrows.
- the fuel is conveyed through the drive or crank chamber 30 and finally fed to a metering device 34, which is designed as a controllable, proportional spring-loaded slide valve.
- L O metering device 34 is thus fluidly or hydraulically between the prefeed pump
- a zero-feed run branches, in which a zero-feed throttle 36 is arranged. In the zero feed run, leakages of the
- L 5 metering device 34 if this is closed in itself, back into the tank 20 and again conveyed to the suction side of the prefeed pump 26.
- the fuel is conveyed into a delivery chamber 40 of the high-pressure pump 32. Subsequently, the fuel is introduced under high pressure via a check valve 42 in the fuel rail 14.
- the fuel For a maintenance of the fuel system 10, for example a filter change, or for a repair measure on the fuel system 10, the fuel usually has to be drained from the fuel system. As a result, a subsequent operation of the pre-feed pump arranged in the fuel circuit
- Fuel system 10 can be manually filled with fuel from the tank 20 before the fuel system 10 is put back into operation.
- the metering device 34 Since the metering device 34 is open in the de-energized state, would be - without 35 countermeasures - when filling by the hand pump 22, the way over the Metering device 34 into the drive or crank chamber 30 of the high-pressure pump 32 free, bypassing the filter 28. This means that unfiltered fuel in the drive or crank chamber 30 and then during operation in the entire high-pressure range until in the 5th Fuel distributor 14 passes. In addition, the zero-feed throttle 36 can clog. This can lead to damage and / or impairment of the high-pressure pump 32, the check valve 42 and in the internal combustion engine 12.
- Metering device 34 selectively closed and thus the way of the fuel via the suction throttle 24, the feed pump 26 and the filter 28 as the only possible way cleared, as the fuel flow is provided even in normal operation of the internal combustion engine 12.
- the function of the metering device 34 is electrically controllable. Therefore, when a diagnostic device or the hand pump 22 is connected to the fuel system 10 for filling, for example, the metering device 34 automatically
- .0 energized and thus closed. It should be noted at this point that there may also be an embodiment of a fuel system in which the hand pump is constantly connected, but not activated in normal operation. In this case, the metering device is energized as soon as the diagnostic device is connected or the manual pump is activated.
- the hand pump 22 includes a sensor or switch that detects an operation, and that the metering device 34 is energized automatically only when actually operating the hand pump 22.
- the metering device 34 is automatically energized. Also, when the ignition of the motor vehicle is switched on, the metering device 34
- the metering device 34 may also work inversely, so that the metering device opens when energized, i. it is closed when de-energized.
- the metering device opens when energized, i. it is closed when de-energized.
- the metering device is already closed.
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
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910003051 DE102009003051A1 (de) | 2009-05-13 | 2009-05-13 | Verfahren zum Befüllen eines Kraftstoffsystems für Kraftfahrzeuge |
| PCT/EP2010/053676 WO2010130491A1 (de) | 2009-05-13 | 2010-03-22 | Verfahren zum befüllen eines kraftstoffsystems für kraftfahrzeuge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2430302A1 true EP2430302A1 (de) | 2012-03-21 |
| EP2430302B1 EP2430302B1 (de) | 2015-08-05 |
Family
ID=42238604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10709732.1A Not-in-force EP2430302B1 (de) | 2009-05-13 | 2010-03-22 | Verfahren zum befüllen eines kraftstoffsystems für kraftfahrzeuge |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2430302B1 (de) |
| CN (1) | CN102422009B (de) |
| DE (1) | DE102009003051A1 (de) |
| WO (1) | WO2010130491A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600130222A1 (it) * | 2016-12-22 | 2018-06-22 | Bosch Gmbh Robert | Gruppo pompa per alimentare carburante da un serbatoio ad un motore a combustione interna |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246424B (zh) * | 2016-08-29 | 2019-07-30 | 潍柴动力股份有限公司 | 高压油泵、发动机燃油系统及发动机 |
| CN106640449B (zh) * | 2016-12-27 | 2018-05-29 | 清华大学 | 用于内燃机的自吸式电控低压燃料计量器 |
| IT201800007435A1 (it) * | 2018-07-23 | 2020-01-23 | Impianto di alimentazione del carburante da un serbatoio ad un motore a combustione interna e metodo per controllare detto impianto |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19746563A1 (de) * | 1997-10-22 | 1999-04-29 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
| DE19926308A1 (de) | 1999-06-09 | 2000-12-21 | Bosch Gmbh Robert | Pumpenanordnung für Kraftstoff |
| DE10139052B4 (de) * | 2001-08-08 | 2004-09-02 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine, insbesondere mit Direkteinspritzung, Computerprogramm, Steuer- und/oder Regelgerät, sowie Kraftstoffsystem für eine Brennkraftmaschine |
| JP4295065B2 (ja) * | 2003-10-02 | 2009-07-15 | 本田技研工業株式会社 | 燃料ポンプ取付構造 |
| DE102007000855B4 (de) * | 2006-12-27 | 2020-06-10 | Denso Corporation | Kraftstofffördergerät und Speicherkraftstoffeinspritzsystem, das dieses aufweist |
-
2009
- 2009-05-13 DE DE200910003051 patent/DE102009003051A1/de not_active Withdrawn
-
2010
- 2010-03-22 WO PCT/EP2010/053676 patent/WO2010130491A1/de not_active Ceased
- 2010-03-22 EP EP10709732.1A patent/EP2430302B1/de not_active Not-in-force
- 2010-03-22 CN CN201080021221.7A patent/CN102422009B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010130491A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600130222A1 (it) * | 2016-12-22 | 2018-06-22 | Bosch Gmbh Robert | Gruppo pompa per alimentare carburante da un serbatoio ad un motore a combustione interna |
| WO2018114614A1 (en) * | 2016-12-22 | 2018-06-28 | Robert Bosch Gmbh | Pump assembly for supplying fuel from a tank to an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010130491A1 (de) | 2010-11-18 |
| CN102422009B (zh) | 2014-07-16 |
| DE102009003051A1 (de) | 2010-11-18 |
| EP2430302B1 (de) | 2015-08-05 |
| CN102422009A (zh) | 2012-04-18 |
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