WO1998031931A1 - Entlüftungsvorrichtung für das kraftstoffversorgungssystem eines verbrennungsmotors - Google Patents
Entlüftungsvorrichtung für das kraftstoffversorgungssystem eines verbrennungsmotors Download PDFInfo
- Publication number
- WO1998031931A1 WO1998031931A1 PCT/EP1998/000083 EP9800083W WO9831931A1 WO 1998031931 A1 WO1998031931 A1 WO 1998031931A1 EP 9800083 W EP9800083 W EP 9800083W WO 9831931 A1 WO9831931 A1 WO 9831931A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- supply system
- bore
- internal combustion
- combustion engine
- 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
- 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
- F02M37/20—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 characterised by means for preventing vapour lock
Definitions
- Ventilation device for the fuel supply system of an internal combustion engine
- the device for venting the fuel supply system of an internal combustion engine can be used wherever, when the fuel tank is completely emptied or when the engine is warmed up, either air enters the fuel system of an engine provided with petrol injection or gas bubbles occur in the fuel system of an engine equipped with petrol injection
- the invention relates to a ventilation device for the fuel supply system of an internal combustion engine with fuel injection for hand tools.
- a venting device which automatically enables the fueling system to be vented, whereby the secure closure is always ensured, so that no fuel can escape via the venting device.
- the venting device is at the highest point of the fuel pressure line, i.e. H. arranged at the furthest point of the fuel pressure line from the underside of the implement or the internal combustion engine and at the point of origin of gas bubbles in the fuel supply system.
- the ventilation device consists of a hole in the wall of the fuel supply system, which is used for in- The side of the power supply system with a body which has a lower density than fuel, is sealable and which is movable in a guide for controlled closing of the bore.
- This guide can be formed by the fuel supply system or its walls itself.
- the body for sealing the bore is preferably designed as a floating body on which a sealing cone is arranged so as to face the opening of the bore.
- the other opening of the bore, i.e. H. to the outside of the fuel supply system is provided with a line which opens into the fuel tank so that gasoline vapors are safely collected.
- Air or gas bubbles can escape through this hole by swiping past the float.
- the float floats and presses the float and thus the sealing cone against the opening of the bore, so that the fuel supply system is closed and pressure can be easily applied to convey fuel.
- the ventilation device is an integral part of the injection valve connecting piece, which represents the injection valve holder. Usually it also contains the fuel pump and pressure regulator connection. The float is guided with the sealing cone through the chamber in the valve connector.
- the advantage of the invention is that under all relevant operating conditions of a handicraft device With gasoline injection, the venting and at the same time the secure closure of the venting device of the fuel supply system is guaranteed. Since the ventilation takes place automatically, there can be no incorrect operation by an operator.
- the rapid venting means that the engine can be completely restarted.
- the harmful gasoline vapors also do not get into the environment when venting, but are returned to the fuel tank.
- the invention is explained in more detail below with reference to a drawing.
- the figure shows a schematic view of the ventilation device according to the invention for the fuel supply system of an internal combustion engine with fuel injection for hand tools in a preferred embodiment.
- FIG. 1 shows a ventilation device 100 according to the invention, which is part of a valve connector 10 that connects the fuel line 11 with the injection valve 12 connects an internal combustion engine, not shown.
- a fuel pump 14 is arranged in the fuel line 11 between the valve connector 10 and a fuel tank 13.
- the valve connector 10 has a return line 15 to the fuel tank 13, in which a pressure regulator 16 is integrated.
- a bore 19 is made on the top 18 for ventilation.
- a line 21 opens into the bore 19, which leads the air or gas bubbles back into the fuel tank 13, where the condensed fuel can be reused.
- the housing 17 of the valve connecting piece 10 there is a float 22, on the top of which a sealing cone 23 is arranged which faces the bore 19 and which can fit into the conical opening 24 of the bore 19.
- the housing 17 is formed on the inside as a guide 25 for the float 22 so that it cannot twist or tilt. In the position shown, the float 22 allows air or gas bubbles to pass, which thus get into the line 21. As soon as these have escaped or during the escape, the fuel level in the housing 17 rises, so that the float 22 floats and finally, when there are no more air or gas bubbles, seals the valve connector 10 to the line 21.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53362598A JP2001513162A (ja) | 1997-01-14 | 1998-01-08 | 内燃機関における燃料供給系統のための脱気装置 |
EP98904047A EP0953106A1 (de) | 1997-01-14 | 1998-01-08 | Entlüftungsvorrichtung für das kraftstoffversorgungssystem eines verbrennungsmotors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997100957 DE19700957A1 (de) | 1997-01-14 | 1997-01-14 | Entlüftungsvorrichtung für das Kraftstoffversorgungssystem eines Verbrennungsmotors |
DE19700957.3 | 1997-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998031931A1 true WO1998031931A1 (de) | 1998-07-23 |
Family
ID=7817309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/000083 WO1998031931A1 (de) | 1997-01-14 | 1998-01-08 | Entlüftungsvorrichtung für das kraftstoffversorgungssystem eines verbrennungsmotors |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0953106A1 (de) |
JP (1) | JP2001513162A (de) |
DE (1) | DE19700957A1 (de) |
WO (1) | WO1998031931A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2783019B1 (fr) * | 1998-09-04 | 2000-10-27 | Renault | Circuit d'alimentation en carburant pour moteur a combustion interne |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1235067B (de) * | 1959-05-13 | 1967-02-23 | Continental Motors Corp | Brennstoffversorgungssystem fuer Brennkraftmaschinen |
DE2804551A1 (de) * | 1978-02-03 | 1979-08-09 | Bosch Gmbh Robert | Kraftstoffanlage fuer brennkraftmaschinen |
JPS5832962A (ja) * | 1981-08-24 | 1983-02-26 | Toyota Motor Corp | 燃料供給装置 |
JPH03202671A (ja) * | 1989-12-28 | 1991-09-04 | Toyoda Gosei Co Ltd | フユーエルカットオフバルブ |
DE9214254U1 (de) * | 1992-10-21 | 1994-02-24 | Ficht Gmbh | Kraftstoffversorgungseinrichtung für eine Kraftstoffeinspritzanlage |
JPH07293393A (ja) * | 1994-04-28 | 1995-11-07 | Hitachi Ltd | 燃料噴射装置 |
JPH084619A (ja) * | 1994-05-31 | 1996-01-09 | Hitachi Ltd | エンジン制御装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2240123A1 (de) * | 1972-08-16 | 1974-02-28 | Hatz Motoren | Einspritzbrennkraftmaschine |
GB1521750A (en) * | 1975-11-13 | 1978-08-16 | Bridgemore Eng Ltd | Air bleeding device for a liquid supply system |
DE4008609C1 (de) * | 1990-03-17 | 1991-03-07 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De |
-
1997
- 1997-01-14 DE DE1997100957 patent/DE19700957A1/de not_active Withdrawn
-
1998
- 1998-01-08 JP JP53362598A patent/JP2001513162A/ja active Pending
- 1998-01-08 EP EP98904047A patent/EP0953106A1/de not_active Ceased
- 1998-01-08 WO PCT/EP1998/000083 patent/WO1998031931A1/de not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1235067B (de) * | 1959-05-13 | 1967-02-23 | Continental Motors Corp | Brennstoffversorgungssystem fuer Brennkraftmaschinen |
DE2804551A1 (de) * | 1978-02-03 | 1979-08-09 | Bosch Gmbh Robert | Kraftstoffanlage fuer brennkraftmaschinen |
JPS5832962A (ja) * | 1981-08-24 | 1983-02-26 | Toyota Motor Corp | 燃料供給装置 |
JPH03202671A (ja) * | 1989-12-28 | 1991-09-04 | Toyoda Gosei Co Ltd | フユーエルカットオフバルブ |
DE9214254U1 (de) * | 1992-10-21 | 1994-02-24 | Ficht Gmbh | Kraftstoffversorgungseinrichtung für eine Kraftstoffeinspritzanlage |
JPH07293393A (ja) * | 1994-04-28 | 1995-11-07 | Hitachi Ltd | 燃料噴射装置 |
JPH084619A (ja) * | 1994-05-31 | 1996-01-09 | Hitachi Ltd | エンジン制御装置 |
Non-Patent Citations (4)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 15, no. 473 (M - 1185) 29 November 1991 (1991-11-29) * |
PATENT ABSTRACTS OF JAPAN vol. 7, no. 112 (M - 215) 17 May 1983 (1983-05-17) * |
PATENT ABSTRACTS OF JAPAN vol. 96, no. 3 29 March 1996 (1996-03-29) * |
PATENT ABSTRACTS OF JAPAN vol. 96, no. 5 31 May 1996 (1996-05-31) * |
Also Published As
Publication number | Publication date |
---|---|
EP0953106A1 (de) | 1999-11-03 |
DE19700957A1 (de) | 1998-07-16 |
JP2001513162A (ja) | 2001-08-28 |
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