EP1298316A2 - Kraftstoff-Einspritzsystem - Google Patents
Kraftstoff-Einspritzsystem Download PDFInfo
- Publication number
- EP1298316A2 EP1298316A2 EP02021072A EP02021072A EP1298316A2 EP 1298316 A2 EP1298316 A2 EP 1298316A2 EP 02021072 A EP02021072 A EP 02021072A EP 02021072 A EP02021072 A EP 02021072A EP 1298316 A2 EP1298316 A2 EP 1298316A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- pump
- injection
- engine according
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 42
- 239000007924 injection Substances 0.000 title claims abstract description 42
- 239000000446 fuel Substances 0.000 title claims abstract description 34
- 238000002485 combustion reaction Methods 0.000 claims description 26
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000002828 fuel tank Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 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
- 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
-
- 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
- F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
-
- 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
- F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
- F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
-
- 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
- F02M63/0265—Pumps feeding common rails
- F02M63/027—More than one high pressure pump feeding a single common rail
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
Definitions
- the invention relates to an internal combustion engine with a fuel injection system, which has an uncontrolled high pressure pump, in whose fuel supply line is turned on a control device and wherein the high pressure pump via a high pressure line with a High-pressure storage device and this via an injection line and a control valve are connected to an injection valve.
- Such an internal combustion engine is known from DE 42 33 273 A1.
- the fuel injection pump arrangement shown has two high pressure pumps, the independent high pressure storage devices fill with fuel.
- the two high pressure pumps each have a housing with an associated camshaft Actuation of the tappet. This housing needs to be more appropriate Place the engine attached and the camshaft in be driven appropriately. For example, a Toothed belt with corresponding gears or interlocking Gears when driving the camshaft from the crankshaft Internal combustion engine required.
- the invention has for its object an air-compressing To provide an internal combustion engine with a fuel injection system designed as a common rail system especially with regard to the high-pressure pump and its drive are simply constructed and has identical parts with a conventional system.
- the high pressure pump is a Single pump element is the one in the crankcase of the internal combustion engine usable pump housing and that Single pump element one on an injection cam of a gas exchange camshaft has rolling roller tappet, which with the Pump plunger is connected.
- One advantage of this training is that Standardization of essential injection components at least for a series of such an internal combustion engine. in this connection are the crankcase of the internal combustion engine, the gas exchange camshaft and also essential parts of the injection pump element, especially the pump housing and the roller tappet compared to one equipped with a conventional injection system Internal combustion engine trained unchanged. Only the Pump plunger, which with the conventional injection system a control edge is provided in the configuration according to the invention in a preferred embodiment as a cylinder plunger without a control edge educated.
- the control device is a Electromagnetically operated hydraulic valve.
- This hydraulic valve or that a pressure control valve and a zero delivery throttle hydraulic valve is in a suitable place in the supply line, which in a further embodiment directly in the crankcase integrated or adapted to the crankcase.
- the Hydraulic valve which is preferably outside the crankcase in the area is arranged next to a single pump element controls the Fuel flow to the single pump element. So is a comprehensive one Control of the high-pressure storage device amount of fuel to be fed in at a simple Construction of the single pump element possible. It can also be two Single pump elements can be provided, in which case the hydraulic valve is arranged between the individual pump elements.
- the control device in addition to the electromagnetically operated hydraulic valve, a pressure control valve and a zero feed throttle.
- Via the pressure control valve is especially with constant fuel delivery by a Backing pump excess fuel back into the fuel tank dissipated.
- the backing pump is advantageously set such that that this promotes an amount of fuel that is larger in any case than the maximum injected into the combustion chambers by the injection valves Fuel quantity.
- the delivery pressure in the low pressure system is preferably to a value between 5 and 10 bar, for example 7 bar, set.
- the feed line is via the zero feed throttle between the hydraulic valve and the individual pump elements relieved and flowing through the hydraulic valve Leakage fuel dissipated. This is via the zero feed throttle outflowing amount of fuel but so small that an impairment the fuel supply to the individual pump elements is not given is.
- the hydraulic valve is a further embodiment of the invention pulse width modulating hydraulic valve or a proportional controlling Hydraulic valve. Both variants allow an accurate and reliable quantity control of the individual pump elements Fuel, making overall a reliable and accurate fuel supply and pressure setting in the high pressure storage device is ensured.
- a pressure booster in the injection line and / or to switch on the injection valve a pressure booster.
- this pressure booster With this pressure booster the on the nozzle needle of the Fuel pressure pending fuel injector further increased. With that further reductions in exhaust emissions possible and it can also future generations of such an injection system this concept can be used.
- Fig. 1 shows a schematically illustrated crankcase 3 one Self-igniting internal combustion engine 1 with a total of six cylinders.
- the internal combustion engine 1 has one in the crankcase 3 mounted crankshaft 2, which has a single tooth mesh, thus via a camshaft gear meshing with a crankshaft gear 5a 5b drives the camshaft 4.
- the camshaft 4 has bearing points 8a, 8b assigned to each cylinder, between those gas exchange cams 6a and 6b and an injection cam 7 are arranged.
- the injection cam 7 can of course also between the gas exchange cam 6a and the gas exchange cam 6b may be arranged.
- the bearings 8a, 8b, the gas exchange cams 6a, 6b and the injection cam 7 go directly, that is without Punctures, into each other. This makes a very stiff camshaft 4 formed.
- the crankcase 3 are according to the number of cylinders Cutouts close to the cylinder head, into which a corresponding Number of high pressure pumps can be used.
- these are high pressure pumps Connected directly to the injectors via short injection lines.
- the high pressure pump is as one Single pump element 10 formed that in the in the crankcase 3 has directly usable pump housing 19.
- Pump housing 19 is a cylinder plunger 13 without a control edge, the cylinder plunger 13 cooperating with a roller tappet 9, that rolls on the injection cam 7.
- feed line 14 for fuel that with the fuel supply to the injection pump element 10 connected is.
- a second or additional single pump element may be present, if this is due to the appropriate design of the injection system is required to fill the high-pressure storage device 11. Otherwise, the recesses in the crankcase 3 are Inclusion of the (conventional) high pressure pumps with sealing caps 18 closed.
- the single pump element 10 is via a high pressure line 12 to the high pressure storage device 11 connected and filled this by the quantity Hydraulic valve 16 controlled with fuel. From the high pressure storage device 11 go out injection lines 17, which with the injection valves 15 are connected. Control valves are in the injection valves 15 installed, which by the respective injection valve 15 in control the amount of fuel delivered to the combustion chamber.
- the fuel injection system is unrelated to the internal combustion engine shown.
- the fuel is supplied by a backing pump 20 from a fuel tank 21 via a filter device 22 to the hydraulic valve 16 fed.
- the hydraulic valve 16 is via a feed line 14 connected to one or more individual pump elements 10, the single pump elements 10 via check valves 23 the fuel via high pressure lines 12 into the high pressure storage device 11 promote. From the high pressure storage device 11 the fuel via injection lines 17 to the injection valves 15 fed.
- the entire system, ie in particular the hydraulic valve 16 and the control valves of the injection valves 15 controlled, the necessary parameters for Control, for example the pressure in the high pressure storage device 11 are supplied to the control unit 24 as measurement data.
- the enlarged section A of the hydraulic valve 16 shows the preferred construction of this hydraulic valve 16, which is also an Pressure control valve 25 and a zero delivery throttle 26. there is that of the pressure control valve 25 and the zero delivery throttle 26th removed amount of fuel returned to the fuel tank 26.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Materials For Photolithography (AREA)
Abstract
Description
- Fig. 1:
- das an die Brennkraftmaschine adaptierte Einspritzsystem und
- Fig. 2:
- ein Schaltschema des Einspritzsystems.
Claims (9)
- Brennkraftmaschine mit einem Kraftstoff-Einspritzsystem, das eine ungeregelte Hochdruckpumpe aufweist, in deren Kraftstoff-Zuführleitung eine Steuervorrichtung eingeschaltet ist und wobei die Hochdruckpumpe über eine Hochdruckleitung mit einer Hochdruckspeichervorrichtung und diese über eine Einspritzleitung sowie ein Steuerventil mit einem Einspritzventil verbunden sind,
dadurch gekennzeichnet, dass die Hochdruckpumpe ein Einzelpumpenelement (10) ist, das ein in das Kurbelgehäuse (3) der Brennkraftmaschine eingesetztes Pumpengehäuse (19) aufweist und dass das Einzelpumpenelement (10) einen von einem auf einem Einspritznocken (7) einer Gaswechselnockenwelle (4) abrollenden Rollenstößel (9) aufweist, der mit dem Pumpenplunger verbunden ist. - Brennkraftmaschine nach Anspruch 1,
dadurch gekennzeichnet, dass der Pumpenplunger ein Zylinderplunger (13) ohne Steuerkante ist. - Brennkraftmaschine nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass die Steuervorrichtung ein elektromagnetisch betätigtes Hydraulikventil (16) ist. - Brennkraftmaschine nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, dass die Steuervorrichtung ein elektromagnetisch betätigtes Hydraulikventil (16) sowie ein Druckregelventil (25) und eine Nullförderdrossel (26) aufweist. - Brennkraftmaschine nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass das Hydraulikventil (16) ein pulsweitenmodulierendes Hydraulikventil (16) ist. - Brennkraftmaschine nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass das Hydraulikventil (16) ein proportionalsteuerndes Hydraulikventil (16) ist. - Brennkraftmaschine nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass die Zuführleitung (14) in das Kurbelgehäuse (3) integriert ist. - Brennkraftmaschine nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Zuführleitung (14) an das Kurbelgehäuse (3) adaptiert ist. - Brennkraftmaschine nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass in die Einspritzleitung (17) und/oder das Einspritzventil (15) ein Druckverstärker eingeschaltet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10147534 | 2001-09-26 | ||
| DE10147534A DE10147534A1 (de) | 2001-09-26 | 2001-09-26 | Kraftstoff-Einspritzsystem |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1298316A2 true EP1298316A2 (de) | 2003-04-02 |
| EP1298316A3 EP1298316A3 (de) | 2005-02-02 |
| EP1298316B1 EP1298316B1 (de) | 2008-05-07 |
Family
ID=7700403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02021072A Revoked EP1298316B1 (de) | 2001-09-26 | 2002-09-21 | Kraftstoff-Einspritzsystem |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1298316B1 (de) |
| AT (1) | ATE394594T1 (de) |
| DE (2) | DE10147534A1 (de) |
| DK (1) | DK1298316T3 (de) |
| ES (1) | ES2305166T3 (de) |
| PT (1) | PT1298316E (de) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1469190A1 (de) * | 2003-04-15 | 2004-10-20 | Denso Corporation | Hochdruck-Kraftstoffzufuhrsystem |
| EP1657434A1 (de) * | 2004-11-12 | 2006-05-17 | C.R.F. Societa' Consortile per Azioni | Hochdruckpumpe mit einer Einrichtung zum Steuern des Durchflusses für ein Brennstoffeinspritzsystem |
| EP1865193A1 (de) * | 2006-06-09 | 2007-12-12 | CRF Societa'Consortile per Azioni | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
| EP2088310A1 (de) * | 2008-02-08 | 2009-08-12 | DEUTZ Aktiengesellschaft | Brennkraftmaschine mit einem Common-Rail-Einspritzsystem |
| EP1530681B2 (de) † | 2002-08-16 | 2018-09-26 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008049964A1 (de) | 2008-10-02 | 2010-04-08 | Deutz Ag | Raildruckregelungskonzept für Raildruckregler mit mehreren Stellgliedern |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4233273A1 (de) | 1992-01-16 | 1993-09-02 | Diesel Tech Corp | Kraftstoffeinspritzanlage mit gemeinsamer druckleitung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6785994A (en) * | 1993-05-06 | 1994-12-12 | Cummins Engine Company Inc. | Variable displacement high pressure pump for common rail fuel injection systems |
| JP3077738B2 (ja) * | 1994-04-28 | 2000-08-14 | 株式会社デンソー | 高圧サプライポンプ |
| DE19508445B4 (de) * | 1995-03-09 | 2004-07-08 | Deutz Ag | Kraftstoffeinspritzvorrichtung für eine selbstzündende Brennkraftmaschine |
| DE19716513C2 (de) * | 1997-04-19 | 1999-02-11 | Mtu Friedrichshafen Gmbh | Kraftstoffeinspritzsystem für einen Verbrennungsmotor mit einer Common-Rail-Schiene |
| DE19719265A1 (de) * | 1997-05-07 | 1998-11-12 | Deutz Ag | Einspritzsystem einer Brennkraftmaschine |
| EP0915252A3 (de) * | 1997-11-05 | 2000-03-15 | SIG Schweizerische Industrie-Gesellschaft | Common-Rail Einspritzsystem |
-
2001
- 2001-09-26 DE DE10147534A patent/DE10147534A1/de not_active Ceased
-
2002
- 2002-09-21 PT PT02021072T patent/PT1298316E/pt unknown
- 2002-09-21 AT AT02021072T patent/ATE394594T1/de active
- 2002-09-21 DK DK02021072T patent/DK1298316T3/da active
- 2002-09-21 EP EP02021072A patent/EP1298316B1/de not_active Revoked
- 2002-09-21 DE DE50212211T patent/DE50212211D1/de not_active Expired - Lifetime
- 2002-09-21 ES ES02021072T patent/ES2305166T3/es not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4233273A1 (de) | 1992-01-16 | 1993-09-02 | Diesel Tech Corp | Kraftstoffeinspritzanlage mit gemeinsamer druckleitung |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1530681B2 (de) † | 2002-08-16 | 2018-09-26 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
| EP1469190A1 (de) * | 2003-04-15 | 2004-10-20 | Denso Corporation | Hochdruck-Kraftstoffzufuhrsystem |
| EP1657434A1 (de) * | 2004-11-12 | 2006-05-17 | C.R.F. Societa' Consortile per Azioni | Hochdruckpumpe mit einer Einrichtung zum Steuern des Durchflusses für ein Brennstoffeinspritzsystem |
| US7263979B2 (en) | 2004-11-12 | 2007-09-04 | C.R.F. Societa Consortile Per Azioni | High-pressure pump with a device for regulating the flow rate for a fuel-injection system |
| EP1865193A1 (de) * | 2006-06-09 | 2007-12-12 | CRF Societa'Consortile per Azioni | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
| JP2007327484A (ja) * | 2006-06-09 | 2007-12-20 | Crf Soc Consortile Per Azioni | 内燃機関エンジンのための燃料噴射システム |
| US7395812B2 (en) | 2006-06-09 | 2008-07-08 | C.R.F. Societa Consortile Per Azioni | Fuel-injection system for an internal-combustion engine |
| KR100897135B1 (ko) * | 2006-06-09 | 2009-05-14 | 씨.알.에프. 쏘시에타 컨서틸 퍼 아지오니 | 내연기관용 연료-분사 장치 |
| EP2088310A1 (de) * | 2008-02-08 | 2009-08-12 | DEUTZ Aktiengesellschaft | Brennkraftmaschine mit einem Common-Rail-Einspritzsystem |
Also Published As
| Publication number | Publication date |
|---|---|
| DK1298316T3 (da) | 2008-08-11 |
| ES2305166T3 (es) | 2008-11-01 |
| DE10147534A1 (de) | 2003-04-30 |
| PT1298316E (pt) | 2008-07-29 |
| DE50212211D1 (de) | 2008-06-19 |
| EP1298316B1 (de) | 2008-05-07 |
| EP1298316A3 (de) | 2005-02-02 |
| ATE394594T1 (de) | 2008-05-15 |
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