EP1463887A1 - Internal combustion engine starting system - Google Patents
Internal combustion engine starting systemInfo
- Publication number
- EP1463887A1 EP1463887A1 EP03712217A EP03712217A EP1463887A1 EP 1463887 A1 EP1463887 A1 EP 1463887A1 EP 03712217 A EP03712217 A EP 03712217A EP 03712217 A EP03712217 A EP 03712217A EP 1463887 A1 EP1463887 A1 EP 1463887A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- accumulator
- plate
- supplied
- hollow
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N99/00—Subject matter not provided for in other groups of this subclass
- F02N99/002—Starting combustion engines by ignition means
- F02N99/006—Providing a combustible mixture inside the cylinder
-
- 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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- 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
- F02D41/3836—Controlling the fuel 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
- F02M63/02—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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/001—Arrangements thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
Definitions
- the invention relates to a starting system for engines provided with a common fuel injection rail.
- Patent application US5839413 discloses a system which makes it possible to reduce the starting time of an engine provided with a common ramp.
- the principle of this system consists in making the common rail communicate not only with a high pressure pump but also with a low pressure circuit thanks to two calibrated non-return valves (a first low pressure and a second high pressure).
- the low pressure circuit has a low pressure accumulator which makes it possible to maintain a stable pressure lower than that delivered when the high pressure pump is at full load.
- the low pressure circuit already compresses the fuel in the common rail.
- the low pressure valve which previously allowed the low pressure flow to pass, will close in favor of the second valve.
- the common rail is finally pressurized only by the high pressure pump.
- the object of the present invention is to overcome all or part of the drawbacks mentioned above by proposing a simple starting system comprising a redundant compression means that can be easily integrated in order to adapt the existing engines to the "stop and start” technique.
- the invention relates to a starting system for an internal combustion engine comprising means for supplying fuel under pressure, a means accumulator supplied with fuel under pressure by said supply means and at least one injection means supplied with fuel by the accumulator means, characterized in that it additionally comprises a device for storing fuel under pressure which is supplied by pressure prevailing in said accumulator means and in that said fuel storage device is capable of supplying at start-up said stored fuel so as to offer a second fuel compression means allowing said engine to start more quickly.
- the storage device in direct communication with said accumulator means, advantageously comprises at least one storage means and control means allowing said storage device to selectively supply or recover fuel under pressure.
- said control means comprise, according to the invention, electromagnetic opening means, elastic closing means and an actuator means selectively controlled by said electromagnetic means and said elastic means making it possible to limit the energy to be supplied for control said starting system.
- the electromagnetic means advantageously comprises, according to the invention, a coil generating a magnetic field capable of moving the actuator means and whose internal diameter forms a tunnel between said at least one storage means and the accumulator means.
- the elastic means comprise a spring, a hollow plate fixed between said electromagnetic means and said storage means and a ball capable of plugging the hollow of said plate and integral with said spring allowing, depending on the relative pressures between the means accumulator and said at least one storage means, the communication between the latter two.
- the actuator means comprises, according to the invention, a first rod located substantially on the central axis of said tunnel formed by the coil, a plate fixed substantially perpendicular to one end of said first rod and a second rod which, in extension of the other end of the first rod, is in contact with said ball and has a diameter less than the hollow of said plate making it possible to follow or initiate the movement of said ball.
- the plate also comprises, advantageously according to the invention, at least one groove capable of allowing fuel to pass through its hollow when said plate is against said electromagnetic means.
- the supply means advantageously comprise a pump supplying fuel to said accumulator means and a non-return valve allowing a direction of flow of fuel only from the pump to said accumulator means.
- FIG. 1 is a schematic overview of the starting system according to the invention.
- FIG. 2 is a schematic view of the fuel storage device according to the invention.
- FIG. 3 is a view of the actuator according to the invention.
- the starting system 1 mainly comprises a common rail 2, supply means 3, injection means 4 and a fuel storage device under pressure 5.
- a common rail for an internal combustion engine will not be detailed in this patent.
- the supply means 3 consist of a high pressure pump 6 of a conduit 7 and of a non-return valve 8. This pump will compress and send fuel under pressure to the common rail 2 through the conduit 7.
- the non-return valve 8, mounted in this same conduit, is used to prevent fuel backflow into the pump 6 when the fuel pressure is higher in the common rail 2 than at the outlet of said pump.
- the pipe 9 allows the injector 10 to be connected to the common rail 2 and therefore to be supplied with pressurized fuel. Indeed, each injector can only operate with fuel under a predetermined minimum pressure. Thus for a four-cylinder engine, four pipe 9 - injector 10 assemblies will have to be used.
- the pressurized fuel storage device 5 is, in the same example illustrated, in direct communication with the common rail by means of a conduit 11.
- said storage device comprises storage means 12 and opening means 13.
- the storage means 12 mainly comprise an enclosure 14 and a sensor 15. This first can contain fuel at a pressure at least also at that supplied by the high pressure pump 6.
- the sensor 15 makes it possible to determine the pressure of the fuel at inside said enclosure.
- the opening means 13 allow communication between the enclosure 14 and the conduit 11. These opening means comprise first elements with elastic properties 16 and second with electromagnetic properties 17, these two series of elements being mechanically linked.
- Said first elements comprise a spring 1 8, a ball 1 9, a hollow spring seat 20 and a hollow ball seat 21.
- the spring seat 20 is used not only to maintain the orientation of said spring but also by virtue of its recess to make fuel communicate between the opening means 13 and the storage means 12.
- the spring 18 comprises at the end opposite to said spring seat the ball 19.
- the latter according to the responses of the spring to the stresses applied, will impart a translational movement capable of opening or closing the hollow of the ball seat 21 and thus allow the fuel communication between the spring seat 20 and the conduit 11.
- Said second elements include control electrodes 22, a coil 23 and an actuator 24.
- the electrodes 22 supply current in the coil 23 so as to induce a magnetic field capable of moving said actuator.
- the coil 23 is mounted against the ball seat 21 so that its internal diameter is centered on the same point as that of said hollow in the ball seat 21. Thus, the fuel to pass between the hollow of the ball seat 21 and the conduit 11 must pass through the internal diameter of the coil 23.
- the actuator 24 comprises a circular plate 25, a first rod 26 and a second rod 27.
- the plate 25 has magnetic characteristics such that, during the passage of current through the coil 23 , he will be attracted to the latter.
- the plate 25 has three grooves 28 equidistant from each other on the face opposite with said coil.
- the first rod 26 is mounted integral with said plate so that said rod is found substantially along the central axis of the inner surface of the coil 23.
- the second rod 27 In extension of the first rod 26 is fixed the second rod 27. This the latter is fine thinner than the first rod 26 but also that said hollow of the ball seat so that it can pass through it.
- the second rod 27 is in permanent contact with the ball 19 which makes it possible to mechanically link the elastic elements 16 and the electromagnetic elements 17.
- the actuator 24 will be moved away from the coil 23 or when the coil 23 receives current, the actuator 24 will dislodge the ball 19 from its seat 21.
- the storage means 14 which is filled with fuel under low pressure, is not operational.
- the sensor 15 detects it and does not authorize the opening of the storage device during startup.
- the engine is then started and through the distribution element, the high pressure pump 6 is started.
- the inertia of the pump 6 means that it does not immediately supply the minimum pressure necessary for the injectors 10. After this minimum pressure exceeded, the pump 6 will continue to increase the pressure in the common rail 2, fuel will then be present in the conduit 11, around the plate 25 and in the hollow interior volume of the coil 23, moreover, the first injections are carried out.
- the engine is then started.
- the spring 18 calibrated according to this threshold pressure will authorize the passage of fuel and thus authorize the filling of the storage means 14. According to the relative pressure between the common rail 2 and the storage means 14, the spring 18 will contract or relax so that, respectively, the pressure of the fuel contained in the storage means 14 increases or remains stable.
- the high pressure pump 6 When the driver decides to stop the engine randomly with respect to the starting system, the high pressure pump 6 is stopped. The pressure in the common rail 2 drops, the spring 18 will relax to press the ball 19 on its seat 21 and thus trap pressurized fuel in the storage means 14. The engine is then stopped and the storage device 5, operational .
- the sensor 15 detects that the pressure is sufficient and then authorizes the release of the fuel contained in the storage means 14 towards the common rail 2. This is achieved by activating the coil 23.
- the actuator will then be drawn against the reel 23 and thus push the ball 19 from its seat 21 thanks to the rods 26 and 27.
- the fuel contained in the storage means 14 is then released and will pass successively through the hollow of the spring seat 20, the hollow of the ball seat (around the rod 27), the inner diameter of the coil 23 (around the rod 26), the grooves 28 of the plate 25 and the conduit 11.
- the non-return valve 8 plugs the pipe 7 and thus keeps the pressure, due to the release, constant in the common rail 2.
- the pressure in the common rail 2 is then sufficient for a computer (not shown) of the engine to authorize the operation of the injectors 10.
- the high pressure pump 6 being set in motion from the engine distribution elements, the first injections will have an accelerating effect on the performance of the pump 6 which will therefore increase in pressure more quickly.
- the non-return valve 8 of the pipe 7 will allow communication between said common rail and the pump 6 so that the latter takes over from said storage device 5.
- the coil 23 is then preferably deactivated.
- the storage means 14 is dimensioned so that two injection cycles can be carried out before the high pressure pump provides a pressure higher than that of the common rail 2.
- the spring 18 calibrated according to this threshold pressure will authorize the passage of the fuel and thus authorize the filling of the storage means 14.
- the cycle of the storage device 5 repeating itself as explained above to allow said engine to acquire a sufficiently short start-up to adapt it to the so-called "stop and start” technique.
- the present invention is not limited to the example illustrated but is capable of various variants and modifications which will appear to those skilled in the art.
- the location of the storage device may be different.
- the movement of the plate 24 can be made more linear by means of stops accompanying the sliding of said actuator along the storage device 5.
- the non-return valve 8 can be integrated into the high pressure pump 6.
- the system can operate without pressure sensor 15 and release the pressure contained in the storage means 14 through a timer or other device.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0200250 | 2002-01-10 | ||
FR0200250A FR2834535B1 (en) | 2002-01-10 | 2002-01-10 | STARTING SYSTEM FOR INTERNAL COMBUSTION ENGINE |
PCT/FR2003/000032 WO2003058053A1 (en) | 2002-01-10 | 2003-01-08 | Internal combustion engine starting system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1463887A1 true EP1463887A1 (en) | 2004-10-06 |
EP1463887B1 EP1463887B1 (en) | 2008-03-12 |
Family
ID=8871222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03712217A Expired - Lifetime EP1463887B1 (en) | 2002-01-10 | 2003-01-08 | Internal combustion engine starting system |
Country Status (8)
Country | Link |
---|---|
US (1) | US7007672B2 (en) |
EP (1) | EP1463887B1 (en) |
JP (1) | JP4304075B2 (en) |
AT (1) | ATE389107T1 (en) |
DE (1) | DE60319670T2 (en) |
ES (1) | ES2301785T3 (en) |
FR (1) | FR2834535B1 (en) |
WO (1) | WO2003058053A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10222895A1 (en) * | 2002-05-23 | 2003-12-11 | Bosch Gmbh Robert | High pressure accumulator for fuel injection systems with integrated pressure control valve |
EP2072809A1 (en) * | 2007-12-20 | 2009-06-24 | GM Global Technology Operations, Inc. | Combustion engine and start system therefore |
DE102009061750B3 (en) | 2009-08-20 | 2021-09-09 | Ford Global Technologies, Llc | Quick start of a common rail system |
DE102012004935B4 (en) * | 2012-03-10 | 2021-09-02 | Volkswagen Aktiengesellschaft | Common rail |
DE102013019730A1 (en) * | 2013-11-27 | 2015-05-28 | Alfred Luhmann | fuel metering |
CN114673601B (en) * | 2022-03-18 | 2023-03-28 | 东风商用车有限公司 | Rapid pressure building method, device and equipment for starting diesel engine and readable storage medium |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2936853A1 (en) * | 1979-09-12 | 1981-04-02 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTROMAGNETICALLY ACTUABLE VALVE |
JPH03157576A (en) * | 1989-11-15 | 1991-07-05 | Aisin Aw Co Ltd | Three-way solenoid valve and manufacture thereof |
US5074263A (en) * | 1990-02-02 | 1991-12-24 | Emerson Charles E | Stop/start control system for an internal combustion engine |
US5529387A (en) * | 1994-09-06 | 1996-06-25 | Valcor Engineering Corporation | Solenoid operated discharging orifice shutoff valve |
US5533707A (en) * | 1995-03-09 | 1996-07-09 | Flexon, Inc. | Check valve with internal longitudinally displaceable sleeve valve |
JP3526119B2 (en) * | 1995-12-28 | 2004-05-10 | 株式会社日本自動車部品総合研究所 | Fuel pressure control system for in-cylinder direct injection engine |
US5758865A (en) * | 1996-08-21 | 1998-06-02 | Kavlico Corporation | Fuel injection valve and engine including the same |
JPH10274130A (en) * | 1997-03-28 | 1998-10-13 | Zexel Corp | Accumulator fuel injection device |
US5839413A (en) | 1997-04-28 | 1998-11-24 | The Rexroth Corporation | Quick start HEUI system |
JP2000186649A (en) * | 1998-12-24 | 2000-07-04 | Isuzu Motors Ltd | Variable discharge quantity control type high pressure fuel pump |
JP3633388B2 (en) * | 1999-08-04 | 2005-03-30 | トヨタ自動車株式会社 | High pressure fuel pump control device for internal combustion engine |
JP3539302B2 (en) * | 1999-09-09 | 2004-07-07 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
US6273395B1 (en) * | 1999-10-12 | 2001-08-14 | Ford Global Tech. | Electronically actuated suction control valve assembly |
US6234128B1 (en) * | 2000-03-13 | 2001-05-22 | General Motors Corporation | Fuel accumulator with pressure on demand |
-
2002
- 2002-01-10 FR FR0200250A patent/FR2834535B1/en not_active Expired - Fee Related
-
2003
- 2003-01-08 ES ES03712217T patent/ES2301785T3/en not_active Expired - Lifetime
- 2003-01-08 JP JP2003558332A patent/JP4304075B2/en not_active Expired - Fee Related
- 2003-01-08 WO PCT/FR2003/000032 patent/WO2003058053A1/en active IP Right Grant
- 2003-01-08 DE DE60319670T patent/DE60319670T2/en not_active Expired - Lifetime
- 2003-01-08 EP EP03712217A patent/EP1463887B1/en not_active Expired - Lifetime
- 2003-01-08 AT AT03712217T patent/ATE389107T1/en not_active IP Right Cessation
- 2003-01-08 US US10/500,962 patent/US7007672B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03058053A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2301785T3 (en) | 2008-07-01 |
EP1463887B1 (en) | 2008-03-12 |
FR2834535B1 (en) | 2004-07-23 |
ATE389107T1 (en) | 2008-03-15 |
JP2005514556A (en) | 2005-05-19 |
US7007672B2 (en) | 2006-03-07 |
DE60319670T2 (en) | 2009-04-02 |
FR2834535A1 (en) | 2003-07-11 |
WO2003058053A1 (en) | 2003-07-17 |
DE60319670D1 (en) | 2008-04-24 |
US20050000494A1 (en) | 2005-01-06 |
JP4304075B2 (en) | 2009-07-29 |
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