EP2459864A1 - Dispositif et procédé d'amorçage d'un circuit de carburant d'un moteur à combustion - Google Patents
Dispositif et procédé d'amorçage d'un circuit de carburant d'un moteur à combustionInfo
- Publication number
- EP2459864A1 EP2459864A1 EP10737988A EP10737988A EP2459864A1 EP 2459864 A1 EP2459864 A1 EP 2459864A1 EP 10737988 A EP10737988 A EP 10737988A EP 10737988 A EP10737988 A EP 10737988A EP 2459864 A1 EP2459864 A1 EP 2459864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- circuit
- inlet
- fluid
- priming
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 53
- 230000037452 priming Effects 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000002828 fuel tank Substances 0.000 description 4
- 241000220324 Pyrus Species 0.000 description 3
- 235000014443 Pyrus communis Nutrition 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 235000021017 pears Nutrition 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- F02M37/04—Feeding by means of driven pumps
- F02M37/16—Feeding by means of driven pumps characterised by provision of personally-, e.g. manually-, operated pumps
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/06—Venting
Definitions
- the invention relates to the priming of the fuel system of a diesel engine.
- Prime the circuit is to bring fuel to the input of the circuit feed pump, which allows the flow of fuel in the circuit when it is driven. It is essential to start the circuit. Indeed, operating the injection pump in the absence of fuel in the circuit can be problematic for several reasons. First, attempting to start an engine when it is not fueled can consume a lot of electrical energy, to the point of endangering the vehicle's battery. Startup can simply fail. On the other hand, the feed pumps and high pressure of a diesel engine are lubricated by the fuel itself. Running them in the absence of fuel can lead to premature wear or breakage.
- the ignition of fuel circuits on diesel vehicles is generally performed during the assembly of the vehicle by applying a vacuum in the circuit to suck the fuel engine content in the vehicle's fuel tank.
- This operation is generally performed online at the filling station of the fuel tank. This is feasible for large series vehicles, but for particular applications, or if for some reason the engine can not be primed during filling of the tank, it is necessary to have a means for manual priming of the circuit.
- the invention therefore relates to a device for priming a fuel system of a combustion engine, having an inlet and an outlet and a manual pumping means capable of causing alternately the suction of a combustion engine. a fluid at said inlet and its discharge at said outlet, wherein the inlet is provided with a first quick coupling plug and the outlet is provided with a second quick coupling plug suitable for connection of the device in series on the circuit at a given point. So we will provide at this point the circuit of a quick connector, which, once disconnected, allows the connection of the device.
- one of the quick connector plugs is of the male type and the other is of the corresponding female type. This allows the quick and easy connection of the device to a point of the circuit having a corresponding connection. In addition, it allows to connect the priming device to ensure the circulation of the pumped fluid in the proper direction.
- the manual pumping means comprises two nonreturn valves allowing the passage of a fluid in a single direction, from the inlet to the outlet of the device, and a variable volume chamber between the two valves anti return.
- Such a device allows the pumping of a fluid by simple means to implement.
- the chamber is such that it has a volume variation of between 200 and 500 ml. .
- this volume allows rapid initiation of the circuit, while allowing to obtain a sufficiently manageable, lightweight device, and allowing manual pumping of fuel.
- the pumping means comprises a piston provided with a handle for its manual actuation.
- the variation in volume of the Chamber of variable volume is made by linear movement of one of its walls (the wall of the piston). Thanks to the operating handle, pumping is easy, simple and ergonomic. Compared to other types of pumps, for example, or the shape of a flexible pear, the dead volume of a pump involving a piston, and may in particular have a constitution similar to that of a syringe , is reduced.
- the priming device comprises a means for visualizing the flow of a fluid in said device. It is thus possible to check the actual circulation of fuel in the device to ensure the priming of the circuit.
- the display means is a transparent sleeve disposed between at least one of the quick connector and the nearest check valve.
- the sleeve may be polyurethane. It allows the easy visualization of the fuel circulation.
- a flexible sleeve it allows great ease of connection of the device to the fuel system.
- the invention also relates to a method of igniting a fuel system of a combustion engine comprising a return line of fuel from the engine to the tank, comprising the steps of:
- the pumping means is manually actuated until the fuel circulation is visible in the priming device, equipped with a medium of visualization. This ensures the actual ignition of the fuel system.
- Figure 1 schematically shows a device according to the invention and its positioning when used on the fuel supply circuit of a combustion engine.
- the fuel supply circuit of a combustion engine comprises a tank 1 for storing fuel for supplying the engine.
- the circuit has an end branch 2, allowing the transport of fuel from the tank 1 to the injection device 3 of the engine.
- This injection device may include, in particular in the case of a direct injection diesel engine, a high pressure pump and a common rail ("common rail").
- a fuel filter 4 is interposed between the tank 1 and the injection device 3.
- the circuit also has a return branch of the fuel to the engine. Typically, in a direct injection diesel engine with a common injection rail, the fuel introduced in excess into the common rail is returned to the fuel tank.
- the circuit In order to manually prime the circuit, that is to say fill the circuit with fuel and in particular bring fuel to the fuel pump inlet of the engine, is connected to the circuit a device according to the invention that is operated manually. In order to be able to connect the device, one starts by disconnecting the circuit at a given point.
- the circuit has a quick connector, preferably with a male part and a female part.
- the device according to the invention comprises an input provided with a first quick connector socket 6 and an output provided with a second quick connector socket 7.
- the quick connector sockets are compatible with a quick connector present on the fuel system at the determined point where the device is connected. This allows the connection of the device in series on the circuit, at this point determined.
- the device according to the invention is connected in series and on the return branch 5.
- the device comprises a first non-return valve 8 and a second non-return valve 9.
- the two non-return valves 8,9 are positioned so as to allow the flow of a fluid from the inlet to the outlet of the device, and to prevent the flow of fluid from the outlet to the inlet of the device.
- the volume variation of the chamber is obtained manually.
- the chamber 10 may preferably be obtained by means of a piston-type device 1 1, whose linear movement varies the internal volume, constituting the chamber 10.
- By alternately varying the volume of the chamber it is possible to obtain makes the nonreturn valves 8 and 9 a pumping phenomenon of the fluid contained in the fuel supply circuit of the engine by the succession of suction phases at the inlet of the device and discharge at its outlet.
- the chamber preferably has a volume variation, between its maximum volume and its minimum volume of 200 to 500ml.
- a device can be in the form of a 250ml syringe made of brass, in which a piston 1 1 is disposed, and equipped with 2 check valves 8.9 mounted head- spade on a tee at the exit of the syringe.
- a male quick-connect plug is mounted at the input or output of the device, the complementary socket is mounted at the other end, so that the device can be quickly connected to the engine fuel system at a point where compatible connection of the device sockets.
- the male and female connector jacks of the device are obviously arranged so that, when the pump is actuated and thanks to the two check valves 8, 9, the flow of fuel is in the desired direction.
- connection of the device can be made directly in the engine compartment of the vehicle.
- the fuel is sucked from the tank 1 through the filter 4 and then the air and fuel residues are returned to the return circuit 5.
- the invention thus proposes a device offering multiple advantages. It is thus possible to prime the fuel system of an engine, particularly in the context of an automotive application, at any point in the vehicle assembly shop, and especially after the filling station. fuel tank, without having to take the vehicle out of the assembly line.
- the ignition of the fuel circuit according to the invention entails no loss of fuel or any additional waste management, insofar as all the fuel sucked into the arrival branch 2 is discharged into the return branch 5. Priming is easy because, typically, with a device for pumping 250 ml of fluid at each pump stroke, about ten actuation is sufficient to initiate a standard automobile circuit, while it would take fifty actuation of the priming pump generally present on vehicles equipped with a diesel engine to obtain this result.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0955292A FR2948731B1 (fr) | 2009-07-29 | 2009-07-29 | Dispositif et procede d'amorcage d'un circuit de carburant d'un moteur a combustion |
| PCT/FR2010/051161 WO2011012785A1 (fr) | 2009-07-29 | 2010-06-10 | Dispositif et procédé d'amorçage d'un circuit de carburant d'un moteur à combustion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2459864A1 true EP2459864A1 (fr) | 2012-06-06 |
| EP2459864B1 EP2459864B1 (fr) | 2015-02-25 |
Family
ID=41805688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10737988.5A Not-in-force EP2459864B1 (fr) | 2009-07-29 | 2010-06-10 | Dispositif et procédé d'amorçage d'un circuit de carburant d'un moteur à combustion |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2459864B1 (fr) |
| FR (1) | FR2948731B1 (fr) |
| WO (1) | WO2011012785A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640465A (zh) * | 2017-01-23 | 2017-05-10 | 广州三业科技有限公司 | 高压共轨电喷柴油机供油启动系统 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5071325A (en) * | 1990-03-26 | 1991-12-10 | Tupper Willis E | Combination primer and mixture enrichment device |
| FR2715193B1 (fr) | 1994-01-19 | 1996-03-08 | Lucas France | Ensemble filtre à pompe d'amorçage. |
| DE19625567C2 (de) * | 1996-06-26 | 2001-02-15 | Bosch Gmbh Robert | Kraftstoff-Förderpumpe für eine Kraftstoff-Einspritzpumpe für Brennkraftmaschinen |
| DE10235398C1 (de) * | 2002-08-02 | 2003-12-24 | Mtu Friedrichshafen Gmbh | Kraftstoff-Handpumpe |
| FR2843619B1 (fr) | 2002-08-13 | 2006-01-06 | Nobel Plastiques | Pompe d'amorcage multicouche |
| FR2843618B1 (fr) * | 2002-08-13 | 2005-02-04 | Nobel Plastiques | Pompe d'amorcage pour circuit imposant une pression en sortie superieure a une pression en entree |
| DE20212673U1 (de) * | 2002-08-19 | 2002-11-21 | MTS Metall-Technologie Schobloch GmbH, 88048 Friedrichshafen | Manuell betätigbare Pumpvorrichtung |
| US6701900B1 (en) * | 2002-12-31 | 2004-03-09 | Caterpillar Inc. | Quick priming fuel system and common passageway housing for same |
| US7527043B2 (en) * | 2007-07-05 | 2009-05-05 | Caterpillar Inc. | Liquid fuel system with anti-drainback valve and engine using same |
| DE102007061355A1 (de) * | 2007-12-19 | 2009-07-02 | Audi Ag | Verfahren und Vorrichtung zum Notentleeren eines Kraftstoffbehälters eines Fahrzeugs |
-
2009
- 2009-07-29 FR FR0955292A patent/FR2948731B1/fr not_active Expired - Fee Related
-
2010
- 2010-06-10 WO PCT/FR2010/051161 patent/WO2011012785A1/fr not_active Ceased
- 2010-06-10 EP EP10737988.5A patent/EP2459864B1/fr not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2011012785A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640465A (zh) * | 2017-01-23 | 2017-05-10 | 广州三业科技有限公司 | 高压共轨电喷柴油机供油启动系统 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2948731A1 (fr) | 2011-02-04 |
| EP2459864B1 (fr) | 2015-02-25 |
| WO2011012785A1 (fr) | 2011-02-03 |
| FR2948731B1 (fr) | 2014-05-09 |
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