WO2001007778A1 - Kraftstoff-einspritzsystem für eine verbrennungskraftmaschine - Google Patents
Kraftstoff-einspritzsystem für eine verbrennungskraftmaschine Download PDFInfo
- Publication number
- WO2001007778A1 WO2001007778A1 PCT/DE2000/002408 DE0002408W WO0107778A1 WO 2001007778 A1 WO2001007778 A1 WO 2001007778A1 DE 0002408 W DE0002408 W DE 0002408W WO 0107778 A1 WO0107778 A1 WO 0107778A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- injection system
- fuel injection
- piston
- working medium
- Prior art date
Links
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
-
- 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
Definitions
- the invention relates to a fuel injection system for an internal combustion engine, with a high-pressure fuel accumulator, from which an injection line for the fuel to be injected and a drive line for fuel branch off, which is used as the drive medium.
- Such a fuel injection system is already known from DE 44 07 585 AI and is based on an injection system that is known under the name "Co mon Rail”.
- This injection system uses a cylindrical pressure tank, to which fuel is supplied by a high-pressure pump.
- the high-pressure accumulator essentially serves as a buffer that dampens pressure fluctuations that result from the supply of fuel by the high-pressure pump and the withdrawal of fuel through the injection nozzles.
- the fuel present in the high-pressure accumulator for a hydraulic valve control.
- the fuel is first supplied to a hydraulic chamber which is assigned to an outlet valve and is controlled by two control valves, and then to a hydraulic chamber which is assigned to an inlet valve and is likewise controlled by two control valves.
- the inlet valve and the outlet valve are opened against the action of a conventional valve spring or closed again by means of the valve spring.
- the fuel injection system according to the invention with the features of the characterizing part of claim 1 has the advantage that an external consumer can be connected to the high-pressure accumulator, which is not operated with the fuel itself, but with any other working medium.
- the converter makes it possible to put the working medium under a pressure that deviates from the fuel pressure.
- the converter has a translationally displaceable input piston and an actuator by means of which the pressurized fuel can be periodically applied to the input piston.
- Pressurized fuel to convert stored potential energy into a reciprocating movement of the input piston, which in turn can then be converted into a volume flow of a working medium under pressure.
- the actuator is a 3/2-way valve.
- Such valves are available as reliable series components, so that the effort for controlling the input piston is minimal.
- the converter has a translationally displaceable output piston which is connected to the input piston.
- FIG. 1 shows a schematic view of an inventive fuel injection system according to a first embodiment
- Fig. 2 is a schematic view of an inventive fuel injection system according to a second embodiment.
- FIG. 1 schematically shows a fuel injection system according to a first embodiment of the invention.
- This contains a high-pressure accumulator 10 for fuel, which is used to operate an internal combustion engine, not shown.
- the fuel is supplied to the high-pressure accumulator 10 through a supply line 12, which is connected to a high-pressure pump, not shown.
- An injection line 14 for the fuel branches off from the high-pressure accumulator 10 and leads to the individual injection nozzles of the injection system.
- a drive line 16 branches off from the high-pressure fuel reservoir 10 and can be used to remove fuel from the high-pressure reservoir, which fuel is used as the drive medium.
- a converter 18 is connected to the drive line 16 and consists of an actuator 20 and a piston pump 22.
- the actuator 20 is a 3/2-way valve which has an inlet 24 which is connected to the drive line 16, an outlet 26 which is connected to the piston pump 22 and an outlet 28 which returns to a fuel accumulator. leads.
- the actuator 20 also has a valve drive 30, which can adjust a valve slide 32 in translation.
- the piston pump 22 has a translationally displaceable input piston 34, which is connected to the output 26 of the actuator 20, and a translationally displaceable output piston 36, which is fixedly connected to the input piston 34.
- a discharge line 37 for a leakage current branches off from a space between the input piston 34 and the output piston 36.
- a compression spring 38 is supported on the output piston 36 and acts on the input piston and the output piston in a position in which the volume of the piston pump assigned to the input piston 34 and connected to the output 26 is minimal.
- a working volume is assigned to the output piston 36, into which a supply line 39 for a working medium opens.
- a check valve 40 is arranged in the feed line 39.
- An output line 41 in which a check valve 42 is arranged, extends from the working volume assigned to the output piston 36.
- the outlet line 41 leads to a high-pressure accumulator 44 for the working medium.
- the working medium can be fed from a high-pressure accumulator 44 to a consumer through an extraction line 46.
- a sensor 43 is attached to the piston pump 22 and measures the path of the input and output pistons and the pressure. This data is made available to the valve drive 30.
- the described injection system with the converter 18 works in the following way:
- the valve drive 30 controls the valve slide 32 so that the input piston 34 is periodically acted upon by the pressurized fuel from the high-pressure accumulator 10.
- the output piston 36 is adjusted downward with respect to FIG. 1, whereby the working medium from the supply line 39 into the output line in N a tr Z ö P- -3 tn s tn?: ⁇ in c ⁇ ⁇ rt ⁇ 3 P- 3 P ß ⁇ tr a er ⁇ rt ö ß a er * -
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
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001512181A JP2003505646A (ja) | 1999-07-22 | 2000-07-22 | 内燃機関用の燃料噴射系 |
US09/787,768 US6532937B1 (en) | 1999-07-22 | 2000-07-22 | Fuel injection system for an internal combustion engine |
EP00960307A EP1115974A1 (de) | 1999-07-22 | 2000-07-22 | Kraftstoff-einspritzsystem für eine verbrennungskraftmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934354.3 | 1999-07-22 | ||
DE19934354A DE19934354C1 (de) | 1999-07-22 | 1999-07-22 | Kraftstoff-Einspritzsystem für eine Verbrennungskraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001007778A1 true WO2001007778A1 (de) | 2001-02-01 |
Family
ID=7915644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2000/002408 WO2001007778A1 (de) | 1999-07-22 | 2000-07-22 | Kraftstoff-einspritzsystem für eine verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6532937B1 (de) |
EP (1) | EP1115974A1 (de) |
JP (1) | JP2003505646A (de) |
DE (1) | DE19934354C1 (de) |
WO (1) | WO2001007778A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6773240B2 (en) | 2002-01-28 | 2004-08-10 | Visteon Global Technologies, Inc. | Single piston dual chamber fuel pump |
US7757172B2 (en) | 2007-12-27 | 2010-07-13 | Kabushiki Kaisha Toshiba | Electronic equipment and method for displaying images |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017201275B8 (de) * | 2017-01-26 | 2018-11-22 | Erwin Junker Grinding Technology A.S. | Verbrennungskraftmaschine mit kraftstoff-einspritzdüse mit zusätzlicher zuführung eines verbrennungsfördernden mediums in den brennraum |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4407585A1 (de) | 1994-03-08 | 1995-09-21 | Mtu Friedrichshafen Gmbh | Variable Ventilsteuerung |
US5713331A (en) * | 1994-12-21 | 1998-02-03 | Mannesmann Rexroth Gmbh | Injection and exhaust-brake system for an internal combustion engine having several cylinders |
DE19716221A1 (de) * | 1997-04-18 | 1998-10-22 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung mit Vor- und Haupteinspritzung bei Brennkraftmaschinen, insbesondere für schwer zündbare Kraftstoffe |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3001155A1 (de) * | 1980-01-15 | 1981-07-16 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstoffeinspritzanlage fuer selbstzuendende brennkraftmaschine |
US6308690B1 (en) * | 1994-04-05 | 2001-10-30 | Sturman Industries, Inc. | Hydraulically controllable camless valve system adapted for an internal combustion engine |
-
1999
- 1999-07-22 DE DE19934354A patent/DE19934354C1/de not_active Expired - Fee Related
-
2000
- 2000-07-22 JP JP2001512181A patent/JP2003505646A/ja active Pending
- 2000-07-22 EP EP00960307A patent/EP1115974A1/de not_active Withdrawn
- 2000-07-22 US US09/787,768 patent/US6532937B1/en not_active Expired - Fee Related
- 2000-07-22 WO PCT/DE2000/002408 patent/WO2001007778A1/de not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4407585A1 (de) | 1994-03-08 | 1995-09-21 | Mtu Friedrichshafen Gmbh | Variable Ventilsteuerung |
US5713331A (en) * | 1994-12-21 | 1998-02-03 | Mannesmann Rexroth Gmbh | Injection and exhaust-brake system for an internal combustion engine having several cylinders |
DE19716221A1 (de) * | 1997-04-18 | 1998-10-22 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung mit Vor- und Haupteinspritzung bei Brennkraftmaschinen, insbesondere für schwer zündbare Kraftstoffe |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6773240B2 (en) | 2002-01-28 | 2004-08-10 | Visteon Global Technologies, Inc. | Single piston dual chamber fuel pump |
US7757172B2 (en) | 2007-12-27 | 2010-07-13 | Kabushiki Kaisha Toshiba | Electronic equipment and method for displaying images |
Also Published As
Publication number | Publication date |
---|---|
US6532937B1 (en) | 2003-03-18 |
JP2003505646A (ja) | 2003-02-12 |
EP1115974A1 (de) | 2001-07-18 |
DE19934354C1 (de) | 2000-12-07 |
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