WO2004051071A1 - Dispositif d'injection de carburant comportant une soupape de commande 3/3 voies pour la modulation du processus d'injection - Google Patents
Dispositif d'injection de carburant comportant une soupape de commande 3/3 voies pour la modulation du processus d'injection Download PDFInfo
- Publication number
- WO2004051071A1 WO2004051071A1 PCT/DE2003/002316 DE0302316W WO2004051071A1 WO 2004051071 A1 WO2004051071 A1 WO 2004051071A1 DE 0302316 W DE0302316 W DE 0302316W WO 2004051071 A1 WO2004051071 A1 WO 2004051071A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- pressure side
- low
- fuel injection
- connection
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0045—Three-way valves
Definitions
- the invention is based on a fuel injection device according to the preamble of claim 1.
- a fuel injection device for example, known from DE 100 39 215 A1
- the nozzle needle of a fuel injection valve is opened or dependent on the pressure prevailing in a control chamber closed.
- the control chamber which is permanently connected to the high-pressure side, can be connected to the low-pressure side by means of a 2/2-way control valve designed as a double-seat valve and can thus be relieved of pressure.
- injection course shaping is not possible with this fuel injection device.
- the fuel injection device according to the invention with the characterizing features of claim dem has the advantage that the pressure prevailing in the control chamber in the two open valve positions of the control valve is reduced at different speeds and therefore an injection curve can be carried out.
- FIG. 1 shows the fuel injection device according to the invention with a double seat valve controlling the pressure in a control chamber in its lower valve position
- FIG. 2 shows the double seat valve of FIG. 1 in its middle valve position
- Fig. 3 shows the double seat valve of Figure 1 in its upper valve position.
- Fig. 4 shows another embodiment of the invention
- Fuel injection device with a differently designed double seat valve in a representation analogous to FIG. 1.
- the fuel injection device 1 according to the invention shown in FIG. 1 is usually used in an internal combustion engine with a plurality of cylinders, with each of these cylinders being assigned a fuel injection valve (injector).
- This injector has, in a manner known per se, an injector nozzle, not shown here, which projects into a cylinder combustion chamber of the internal combustion engine, and an injector needle 3 which opens and closes the injector depending on the pressure in a control chamber 2 and is only indicated to a small extent here.
- the control room 2 is permanently connected to a high-pressure inlet line (high-pressure side) 5 via an inlet throttle 4.
- a 3/3-way control valve 6 in the form of a double-seat valve is provided, which opens or blocks the connection of the control chamber 2 with a low-pressure drain line (low-pressure side) 7.
- the high-pressure inlet line 5 can be connected to a high-pressure reservoir (common rail), not shown, and the low-pressure outlet line 7 can be connected to leakage oil.
- the control valve 6 has a high-pressure side valve connection 8, which is connected to the control chamber 2, and two low-pressure side valve connections 9, 10, which are each connected to the low-pressure discharge line 7 via an outlet throttle 11, 12.
- the control valve 6 has a valve body 13 designed as a valve ball, which is axially adjustable in a valve chamber 14 between two coaxial annular valve seats 15, 16 by means of a piezoelectric actuator 17 against the action of a closing spring 18.
- the valve chamber 14 is connected via the valve opening of the lower valve seat 15 in FIG. 1 to the high-pressure valve connection 8 and via the valve opening of the upper valve seat 16 to the first low-pressure valve connection 9.
- the second low-pressure valve connection 10 is permanently connected to the valve chamber 14 connected.
- the valve body 13 can be moved into an upper, middle or lower valve position by means of the actuator 17.
- valve opening of the lower valve seat 15 is closed by the valve body 13 and the valve opening of the upper valve seat 16 is opened, so that the connection of the control chamber 2 to the low-pressure drain line 7 is blocked.
- the high pressure prevailing in the control chamber 2 acts on a control surface 19 of the nozzle needle 3 acting in the closing direction of the nozzle needle 3, so that the nozzle needle 3 or the fuel injection valve are closed.
- valve body 13 In the middle valve position shown in FIG. 2, the valve body 13 is located between the two valve seats 15, 16, so that the valve openings of the two valve seats 15, 16 are open.
- the high-pressure valve connection 8 is now connected to both low-pressure valve connections 9, 10, so that the
- Control room 2 is connected to the low-pressure discharge line 7 via both discharge throttles 11, 12. As a result, the pressure prevailing in the control chamber 2 is reduced and the nozzle needle 3 or the fuel injection valve open.
- the pressure reduction rate is determined by the two parallel discharge throttle 11, 12. If the first outlet throttle 11 has a significantly smaller throttle resistance than the second outlet throttle 12, the pressure reduction rate is approximately determined by the first outlet throttle 11.
- valve body 13 closes the valve opening of the upper valve seat 16.
- the high-pressure side valve connection 8 is only connected to the second low-pressure side valve connection 10, so that the control chamber 2 is connected to the low-pressure valve only via the second outlet throttle 12. Drain line 7 is connected.
- the pressure reduction rate is determined by the second outlet throttle 12.
- valve body 113 of the control valve 106 is designed as a valve piston and is guided axially displaceably in a guide bore 120.
- the valve body 113 has a lower and an upper conical valve sealing surface 121, 122 which cooperate with the two conical valve seats 115, 116.
- the valve chamber 114 provided between the two valve seats 115, 116 is connected via the valve opening of the lower valve seat 115 in FIG. 4 to a lower annular space 123 of the guide bore 120 and via the valve opening of the upper valve seat 116 to an upper annular space 124 of the guide bore 120, the two annular spaces 123, 124 are formed by annular grooves of the valve body 113.
- the high-pressure side valve connection 108 opens into the lower annular space 123, and the first low-pressure side valve connection 109 extends from the upper annular space 124.
- the second low-pressure side valve connection 110 extends from the valve chamber 114.
- the first low-pressure side valve connection 109 is connected to the low-pressure discharge line 107 via the first discharge throttle 111 and the second low-pressure side valve connection 110 is connected via the first discharge throttle 112.
- Leakage oil line 125 in order to discharge the leakage oil present between valve body 113 and guide bore 120.
- the first valve connection 108 is connected to both low-pressure side valve connections 109, 110, so that the pressure prevailing in the control chamber 102 is reduced via the two flow restrictors 111, 112 and that Open nozzle needle 103 or the fuel injection valve.
- the high-pressure-side valve connection 108 is only connected to the second low-pressure-side valve connection 110, so that the pressure prevailing in the control chamber 102 is reduced only via the second outlet throttle 1 12 and the nozzle needle 3 or the fuel injection valve open.
- a suitable injection course shaping by means of the control valve 106 can be set by a suitable combination of the two outlet throttles 11 1, 112 and the inlet throttle 104.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03812121A EP1576276A1 (fr) | 2002-12-05 | 2003-07-10 | Dispositif d'injection de carburant comportant une soupape de commande 3/3 voies pour la modulation du processus d'injection |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10256748.4 | 2002-12-05 | ||
DE10256748 | 2002-12-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004051071A1 true WO2004051071A1 (fr) | 2004-06-17 |
Family
ID=32403704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/002316 WO2004051071A1 (fr) | 2002-12-05 | 2003-07-10 | Dispositif d'injection de carburant comportant une soupape de commande 3/3 voies pour la modulation du processus d'injection |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1576276A1 (fr) |
WO (1) | WO2004051071A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1614893A1 (fr) * | 2004-07-06 | 2006-01-11 | Denso Corporation | Injecteur du type Common-Rail |
WO2007110256A1 (fr) * | 2006-03-24 | 2007-10-04 | Robert Bosch Gmbh | Injecteur de carburant |
EP1927748A2 (fr) * | 2006-12-01 | 2008-06-04 | Robert Bosch Gmbh | Injecteur de carburant |
EP1944500A2 (fr) * | 2007-01-10 | 2008-07-16 | Robert Bosch Gmbh | Injecteur de carburant |
CN100432415C (zh) * | 2004-07-06 | 2008-11-12 | 株式会社电装 | 共轨喷油器 |
EP2960485A1 (fr) * | 2014-06-24 | 2015-12-30 | Delphi International Operations Luxembourg S.à r.l. | Vanne de controle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1041272A2 (fr) * | 1999-04-01 | 2000-10-04 | Delphi Technologies, Inc. | Injecteur de combustible |
WO2001023743A1 (fr) * | 1999-09-30 | 2001-04-05 | Robert Bosch Gmbh | Soupape pour commander le passage de liquides |
EP1164283A2 (fr) * | 2000-06-15 | 2001-12-19 | Toyota Jidosha Kabushiki Kaisha | Soupape d'injection de combustible |
DE10039215A1 (de) * | 2000-08-11 | 2002-02-28 | Bosch Gmbh Robert | Sitzventilanordnung, insbesondere für ein Kraftstoffeinspritzsystem einer Verbrennungsmaschine |
-
2003
- 2003-07-10 WO PCT/DE2003/002316 patent/WO2004051071A1/fr not_active Application Discontinuation
- 2003-07-10 EP EP03812121A patent/EP1576276A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1041272A2 (fr) * | 1999-04-01 | 2000-10-04 | Delphi Technologies, Inc. | Injecteur de combustible |
WO2001023743A1 (fr) * | 1999-09-30 | 2001-04-05 | Robert Bosch Gmbh | Soupape pour commander le passage de liquides |
EP1164283A2 (fr) * | 2000-06-15 | 2001-12-19 | Toyota Jidosha Kabushiki Kaisha | Soupape d'injection de combustible |
DE10039215A1 (de) * | 2000-08-11 | 2002-02-28 | Bosch Gmbh Robert | Sitzventilanordnung, insbesondere für ein Kraftstoffeinspritzsystem einer Verbrennungsmaschine |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1614893A1 (fr) * | 2004-07-06 | 2006-01-11 | Denso Corporation | Injecteur du type Common-Rail |
CN100432415C (zh) * | 2004-07-06 | 2008-11-12 | 株式会社电装 | 共轨喷油器 |
US7458525B2 (en) | 2004-07-06 | 2008-12-02 | Denso Corporation | Common-rail injector |
WO2007110256A1 (fr) * | 2006-03-24 | 2007-10-04 | Robert Bosch Gmbh | Injecteur de carburant |
EP1927748A2 (fr) * | 2006-12-01 | 2008-06-04 | Robert Bosch Gmbh | Injecteur de carburant |
EP1927748A3 (fr) * | 2006-12-01 | 2009-07-15 | Robert Bosch Gmbh | Injecteur de carburant |
EP1944500A2 (fr) * | 2007-01-10 | 2008-07-16 | Robert Bosch Gmbh | Injecteur de carburant |
EP1944500A3 (fr) * | 2007-01-10 | 2009-08-05 | Robert Bosch Gmbh | Injecteur de carburant |
EP2960485A1 (fr) * | 2014-06-24 | 2015-12-30 | Delphi International Operations Luxembourg S.à r.l. | Vanne de controle |
Also Published As
Publication number | Publication date |
---|---|
EP1576276A1 (fr) | 2005-09-21 |
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