ITMI952406A1 - FUEL SUPPLY DEVICE FOR AN ENDOTHERMIC ENGINE - Google Patents
FUEL SUPPLY DEVICE FOR AN ENDOTHERMIC ENGINE Download PDFInfo
- Publication number
- ITMI952406A1 ITMI952406A1 IT95MI002406A ITMI952406A ITMI952406A1 IT MI952406 A1 ITMI952406 A1 IT MI952406A1 IT 95MI002406 A IT95MI002406 A IT 95MI002406A IT MI952406 A ITMI952406 A IT MI952406A IT MI952406 A1 ITMI952406 A1 IT MI952406A1
- Authority
- IT
- Italy
- Prior art keywords
- fuel
- valve
- pressure
- supply device
- fuel supply
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 63
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 239000002828 fuel tank Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
- F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
- F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
-
- 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
-
- 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
- F02D41/065—Introducing corrections for particular operating conditions for engine starting or warming up for starting at hot start or restart
-
- 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
- F02D41/32—Controlling fuel injection of the low pressure type
-
- 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
- F02M37/0047—Layout or arrangement of systems for feeding fuel
- F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
-
- 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
- F02M69/54—Arrangement of fuel pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of 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
- 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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
- F02M37/0029—Pressure regulator in the low pressure fuel system
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Abstract
L'invenzione ha per oggetto un dispositivo per l'alimentazione del carburante per un motore endotermico, in cui, a determinate condizioni, per esempio, nel caso di un avviamento a caldo, viene aumentata la pressione del carburante, laddove questo aumento della pressione avviene mediante la chiusura di una valvola disposta nel condotto di ritorno del carburante, essendo inoltre previsto uno strozzatore disposto parallelo alla valvola oppure una valvola limitatrice di pressione disposta fra il distributore ed il serbatoio. Il comando delle valvole nonché il riconoscimento dell'avviamento a caldo avviene nell'apparecchio di comando del motore endotermico. (Figura 1).The invention relates to a fuel supply device for an internal combustion engine, in which, under certain conditions, for example, in the case of a hot start, the fuel pressure is increased, where this increase in pressure occurs by closing a valve located in the fuel return line, a throttle arranged parallel to the valve or a pressure relief valve located between the distributor and the tank being also provided. The control of the valves as well as the recognition of the hot start takes place in the control unit of the internal combustion engine. (Figure 1).
Description
TESTO DELLA DESCRIZIONE TEXT OF THE DESCRIPTION
Stato della tecnica State of the art
L'invenzione si riferisce ad un dispositivo per l'alimentazione del carburante per un motore endotermico secondo il tipo della rivendicazione principale. The invention relates to a fuel supply device for an internal combustion engine according to the type of the main claim.
È noto che nel caso di dispositivi per l'alimentazione del carburante in motori endotermici, il carburante venga pompato con l’ausilio di una pompa elettrica per carburante da un serbatoio del carburante alle valvole ad iniezione, mentre il carburante in eccesso viene fatto rifluire attraverso un condotto di ritorno nel serbatoio del carburante. Poiché, nel caso di differente sollecitazione del motore endotermico, viene impiegato più o meno carburante, l'alimentazione del carburante viene regolata dall'apparecchio di comando del motore endotermico. Per la regolazione di una pompa elettrica del carburante, nel documento DE-OS 28 08 731 viene per esempio proposto di rilevare la pressione del carburante e, in dipendenza dalla pressione del carburante misurata, regolare quindi la portata della pompa elettrica per carburante. Questa regolazione avviene influenzando con l’apparecchio di comando la tensione effettiva di alimentazione per la pompa elettrica del carburante. La regolazione avviene nel complesso con l 'impiego di differenti informazioni riguardanti lo stato funzionale del motore endotermico. It is known that in the case of fuel supply devices in internal combustion engines, the fuel is pumped with the aid of an electric fuel pump from a fuel tank to the injection valves, while the excess fuel is returned through a return line to the fuel tank. Since more or less fuel is used in the case of different stress on the internal combustion engine, the fuel supply is regulated by the internal combustion engine control unit. For the regulation of an electric fuel pump, for example DE-OS 28 08 731 is proposed to determine the fuel pressure and, depending on the measured fuel pressure, to regulate the flow rate of the electric fuel pump. This adjustment takes place by influencing the actual power supply voltage for the electric fuel pump with the control unit. The regulation takes place on the whole with the use of different information regarding the functional state of the internal combustion engine.
Nel caso di cosiddetti sistemi "Dend ended", la pressione del carburante viene regolata per mezzo di un regolatore di pressione che risulta disposto vicino alla pompa elettrica del carburante, mentre in corrispondenza del distributore non è presente alcun condotto di ritorno. In the case of so-called "Dend ended" systems, the fuel pressure is regulated by means of a pressure regulator which is arranged near the electric fuel pump, while there is no return pipe at the distributor.
Vantaggi dell'invenzione Advantages of the invention
Il dispositivo secondo l'invenzione con le caratteristiche della rivendicazione 1 presenta rispetto allo stato della tecnica il vantaggio che anche a condizioni sfavorevoli, per esempio, a condizioni di avviamento a caldo, viene garantito un affidabile funzionamento ed un sicuro avviamento del motore endotermico. Questi vantaggi vengono ottenuti col fatto che, mediante dei mezzi adeguati, viene eseguito un aumento della pressione del carburante dopo il riconoscimento della presenza delle condizioni problematiche, quindi in seguito al riconoscimento di una condizione di avviamento a caldo. Nel contempo viene effettuato l ' aumento della pressione del carburante durante 1 ' avviamento a caldo mediante una semplice commutazione di uno strozzatore nel condotto di ritorno del carburante del regolatore di pressione. Il comando opportuno di questo strozzatore mediante l ' apparecchio di comando assicura che, a condizioni normali, non si verifichi in modo particolarmente vantaggioso alcun aumento della pressione di sistema. The device according to the invention with the characteristics of claim 1 has the advantage with respect to the state of the art that even under unfavorable conditions, for example, under hot start conditions, reliable operation and safe starting of the internal combustion engine are guaranteed. These advantages are obtained by the fact that, by means of suitable means, an increase in the pressure of the fuel is carried out after the recognition of the presence of the problematic conditions, therefore following the recognition of a hot start condition. At the same time, the fuel pressure is increased during a hot start by simply switching a throttle in the fuel return line of the pressure regulator. Appropriate control of this throttle via the control unit ensures that under normal conditions no increase in system pressure occurs in a particularly advantageous manner.
Ulteriori vantaggi dell ' invenzione vengono ottenuti con l ' ausilio degli accorgimenti indicati nelle sottorivendicazioni. Further advantages of the invention are obtained with the aid of the expedients indicated in the sub-claims.
Disegni Drawings
Due esempi esecutivi dell'invenzione sono illustrati nelle due figure del disegno e verranno descritti più dettagliatamente nella seguente descrizione. Two embodiments of the invention are illustrated in the two figures of the drawing and will be described in more detail in the following description.
Descrizione degli esempi esecutivi La fig. 1 illustra un primo esempio esecutivo dell'invenzione. Con 10 viene indicato il serbatoio del carburante, dal quale la pompa del carburante, normalmente una pompa elettrica del carburante 11, alimenta il carburante attraverso il condotto 12 del carburante al distributore 13 e quindi alle valvole ad iniezione 14, 15, 16, 17. Queste valvole ad iniezione iniettano il carburante nel tubo d'aspirazione 18 del motore endotermico. Description of the executive examples Fig. 1 illustrates a first executive example of the invention. 10 indicates the fuel tank, from which the fuel pump, normally an electric fuel pump 11, supplies the fuel through the fuel duct 12 to the distributor 13 and then to the injection valves 14, 15, 16, 17. These injection valves inject the fuel into the intake pipe 18 of the internal combustion engine.
Fra la pompa elettrica 11 del carburante ed il distributore 13 è disposto il condotto di ritorno 19 del carburante, attraverso il quale il carburante eccedente viene ricondotto nel serbatoio 10 del carburante. Nel condotto di ritorno del carburante si trova un regolatore di pressione 20 nonché una valvola 21. Parallelamente alla valvola 21 si trova uno strozzatore 22. The fuel return pipe 19 is arranged between the electric fuel pump 11 and the distributor 13, through which the excess fuel is returned to the fuel tank 10. In the fuel return line there is a pressure regulator 20 as well as a valve 21. Parallel to the valve 21 there is a throttle 22.
Il sistema di alimentazione del carburante viene comandato con l'ausilio dell'apparecchio di comando 23, il quale ottiene mediante delle entrate E le necessarie informazioni ovvero i segnali e mediante le uscite A emette dei segnali di comando. Tali segnali di comando sono per esempio anche dei segnali di comando SI che innescano delle iniezioni tramite le valvole ad iniezione 14 a 17. Sono previsti degli ulteriori segnali di comando, per esempio, S2 per l'azionamento della valvola 21 e S3 per il comando della pompa elettrica 11 del carburante. Un sensore di pressione 24, il quale è disposto nel posto a lui adatto nel sistema di alimentazione del carburante, può fornire all ’apparecchio di comando delle informazioni riguardanti la pressione attuale del carburante. The fuel supply system is controlled with the aid of the control unit 23, which obtains the necessary information or signals via inputs E and outputs control signals via outputs A. These control signals are, for example, also control signals SI which trigger injections by means of the injection valves 14 to 17. Further control signals are provided, for example, S2 for actuating the valve 21 and S3 for controlling of the electric fuel pump 11. A pressure sensor 24, which is arranged in the place suitable for it in the fuel supply system, can provide the control unit with information regarding the current fuel pressure.
Con il dispositivo illustrato nella fig. 1 per l’alimentazione del carburante, l’apparecchio di comando può aumentare la pressione del carburante a determinate condizioni, chiudendo od aprendo la valvola 21. Quando la valvola è aperta la pressione di sistema PS è uguale alla pressione PD regolata dal regolatore di pressione 20. Quando la valvola è chiusa aumenta la pressione di sistema e PS risulta maggiore di PD. With the device illustrated in fig. 1 for the fuel supply, the control unit can increase the fuel pressure under certain conditions by closing or opening valve 21. When the valve is open the system pressure PS is equal to the pressure PD regulated by the pressure regulator 20. When the valve is closed the system pressure increases and PS is greater than PD.
L'aumento della pressione viene eseguito quando l’apparecchio di comando 23 rileva la presenza di un avviamento a caldo. Un tale riconoscimento dell'avviamento a caldo può avvenire per esempio con l'ausilio dell’elaborazione dei segnali di un sensore di temperatura 25 associato al motore endotermico. The pressure increase is performed when the control device 23 detects the presence of a hot start. Such recognition of hot start can take place for example with the aid of the processing of the signals of a temperature sensor 25 associated with the internal combustion engine.
Nella fig. 2 è illustrato un secondo esempio esecutivo dell'invenzione. Le parti costruttive uguali al primo esempio sono indicate con gli stessi numeri di riferimento della fig. 1. In fig. 2 shows a second executive example of the invention. The constructive parts identical to the first example are indicated with the same reference numbers as in fig. 1.
Nell'esempio esecutivo secondo la fig. 2 non è presente uno strozzatore, ma al suo posto è stata scambiata la sequenza della disposizione del regolatore di pressione 20 e della valvola 21. Nel condotto 12 del carburante, fra il condotto di ritorno 19 del carburante e la pompa elettrica 11 del carburante è disposta una valvola di non ritorno 27. Inoltre, un ulteriore condotto 26 con una valvola limitatrice di pressione 28 è disposto fra la valvola di non ritorno 27 ed il serbatoio 10 del carburante. In the embodiment according to fig. 2 there is no throttle, but instead the sequence of the arrangement of the pressure regulator 20 and the valve 21 has been exchanged. In the fuel line 12, between the fuel return line 19 and the electric fuel pump 11 is a non-return valve 27 is arranged. Furthermore, a further duct 26 with a pressure relief valve 28 is arranged between the non-return valve 27 and the fuel tank 10.
In modo dipendente dalla presente condizione funzionale, l'apparecchio di comando 23 apre o chiude la valvola 21. Quando è presente un funzionamento normale, la valvola è aperta e la pressione di sistema PS è uguale alla pressione del regolatore di pressione PD. Quando invece l'apparecchio di comando rileva la presenza di un avviamento a caldo, la valvola 21 viene chiusa e la pressione di sistema PS aumenta alla sovrapressione PU stabilita dalla valvola limitatrice di pressione 28. Ρϋ è anche la pressione di lavoro della valvola limitatrice di pressione. Nella fase di arresto la pressione P è uguale a PU. Depending on the present functional condition, the control device 23 opens or closes the valve 21. When normal operation is present, the valve is open and the system pressure PS is equal to the pressure of the pressure regulator PD. On the other hand, when the control unit detects the presence of a hot start, the valve 21 is closed and the system pressure PS increases to the overpressure PU established by the pressure relief valve 28. Ρϋ is also the working pressure of the relief valve. pressure. In the stopping phase the pressure P is equal to PU.
Nella fig. 2 sono disposte fra loro separate la pompa elettrica del carburante 11 nonché la valvola limitatrice di pressione 28 e la valvola di non ritorno 27 nonché la valvola 21. È possibile un'integrazione della valvola limitatrice di pressione, della valvola di non ritorno nonché della valvola 25 nella pompa elettrica del carburante od in corrispondenza della stessa. In fig. 2, the electric fuel pump 11 as well as the pressure relief valve 28 and the non-return valve 27 as well as the valve 21 are arranged separately from each other. Integration of the pressure relief valve, the non-return valve and the valve is possible. 25 in the electric fuel pump or in correspondence with it.
Claims (7)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4443836A DE4443836A1 (en) | 1994-12-09 | 1994-12-09 | Combustion engine fuel supply appts. |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI952406A0 ITMI952406A0 (en) | 1995-11-21 |
ITMI952406A1 true ITMI952406A1 (en) | 1997-05-21 |
IT1277228B1 IT1277228B1 (en) | 1997-11-05 |
Family
ID=6535354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT95MI002406A IT1277228B1 (en) | 1994-12-09 | 1995-11-21 | FUEL SUPPLY DEVICE FOR AN ENDOTHERMIC ENGINE |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPH08232790A (en) |
KR (1) | KR100407879B1 (en) |
DE (1) | DE4443836A1 (en) |
ES (1) | ES2120876B1 (en) |
IT (1) | IT1277228B1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6024072A (en) * | 1997-05-21 | 2000-02-15 | Aisan Kogyo Kabushiki Kaisha | Fuel pump control apparatus |
JP3612175B2 (en) * | 1997-07-15 | 2005-01-19 | 株式会社日立製作所 | Fuel pressure control device for in-cylinder injection engine |
DE19832842C1 (en) * | 1998-07-21 | 2000-02-17 | Bosch Gmbh Robert | Fuel delivery system for supplying fuel to an internal combustion engine |
DE19936287C2 (en) * | 1999-08-02 | 2003-04-30 | Bosch Gmbh Robert | Demand control for a fuel delivery module with variable system pressure |
DE19951751A1 (en) * | 1999-10-27 | 2001-05-03 | Bayerische Motoren Werke Ag | Vehicle fuel delivery system has controller that sets fuel delivery quantity actually required to operate engine depending on measured air flow and additional quantity by controlling fuel pump |
DE10005471A1 (en) | 2000-02-08 | 2001-08-09 | Bayerische Motoren Werke Ag | Fuel supply system for IC engine has pressure regulator inserted in fuel line with input control pressure for pressure regulator obtained from feedback line leading to fuel tank |
DE10005589A1 (en) | 2000-02-09 | 2001-08-16 | Bayerische Motoren Werke Ag | Fuel supply system for an internal combustion engine |
DE10006622A1 (en) | 2000-02-15 | 2001-08-16 | Bosch Gmbh Robert | Device for supplying a motor vehicle's internal combustion engine with fuel has a feeder unit driven by an electric motor to feed fuel from a reservoir to an internal combustion engine, also pressure-limiting and reverse flow valves. |
DE10061856A1 (en) * | 2000-12-12 | 2002-06-27 | Bosch Gmbh Robert | Method, computer program and control and / or regulating device for operating an internal combustion engine and internal combustion engine |
DE10212870A1 (en) * | 2002-03-22 | 2003-10-02 | Volkswagen Ag | Fuel supply system of IC engine with high pressure injection has valve fitted in HP pump leakage pipe |
US6718948B2 (en) * | 2002-04-01 | 2004-04-13 | Visteon Global Technologies, Inc. | Fuel delivery module for petrol direct injection applications including supply line pressure regulator and return line shut-off valve |
WO2003100246A1 (en) * | 2002-05-29 | 2003-12-04 | Mitsubishi Denki Kabushiki Kaisha | Fuel supply system and fuel pressure regulator |
DE102004007878A1 (en) | 2004-02-18 | 2005-09-15 | Ti Automotive (Neuss) Gmbh | Fuel supply system and method for controlling the fuel supply |
DE102004017729A1 (en) * | 2004-04-10 | 2005-10-27 | Volkswagen Ag | Fuel injection system for internal combustion engine, has throttled vent line with valve in storage tank, and causing slight positive pressure in front of high-pressure pump, and allowing less fuel to flow through fuel filter |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683871A (en) * | 1970-07-17 | 1972-08-15 | Gen Motors Corp | Fuel supply system for an internal combustion engine providing voltage compensated cranking enrichment |
DE2340834C2 (en) * | 1973-08-13 | 1975-03-27 | Deutsche Vergaser Gmbh & Co Kg, 4040 Neuss | Fuel injection device for mixture-compressing internal combustion engines |
DE2437713A1 (en) * | 1974-08-06 | 1976-02-26 | Bosch Gmbh Robert | DEVICE TO REDUCE HARMFUL COMPONENTS IN COMBUSTION ENGINE EXHAUST GAS |
DE3117945C2 (en) * | 1981-05-06 | 1983-04-07 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Vehicle internal combustion engine with spark ignition |
DE3608522A1 (en) * | 1986-03-14 | 1987-09-17 | Bosch Gmbh Robert | METHOD FOR CONTROLLING A FUEL INJECTION SYSTEM AND FUEL INJECTION SYSTEM |
US4747386A (en) * | 1986-05-02 | 1988-05-31 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for augmenting fuel injection on hot restart of engine |
KR0138832Y1 (en) * | 1994-06-23 | 1999-03-20 | 전성원 | Mpi-type fuel supply system |
-
1994
- 1994-12-09 DE DE4443836A patent/DE4443836A1/en not_active Ceased
-
1995
- 1995-11-21 IT IT95MI002406A patent/IT1277228B1/en active IP Right Grant
- 1995-12-06 JP JP7317978A patent/JPH08232790A/en not_active Abandoned
- 1995-12-07 ES ES09502418A patent/ES2120876B1/en not_active Expired - Fee Related
- 1995-12-08 KR KR1019950049113A patent/KR100407879B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH08232790A (en) | 1996-09-10 |
ITMI952406A0 (en) | 1995-11-21 |
DE4443836A1 (en) | 1996-06-13 |
ES2120876B1 (en) | 1999-04-16 |
ES2120876A1 (en) | 1998-11-01 |
KR100407879B1 (en) | 2004-03-09 |
IT1277228B1 (en) | 1997-11-05 |
KR960023745A (en) | 1996-07-20 |
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Legal Events
Date | Code | Title | Description |
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0001 | Granted |