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DE19516144C1 - Fuel supply unit for mixture-compressing IC engine - Google Patents

Fuel supply unit for mixture-compressing IC engine

Info

Publication number
DE19516144C1
DE19516144C1 DE19516144A DE19516144A DE19516144C1 DE 19516144 C1 DE19516144 C1 DE 19516144C1 DE 19516144 A DE19516144 A DE 19516144A DE 19516144 A DE19516144 A DE 19516144A DE 19516144 C1 DE19516144 C1 DE 19516144C1
Authority
DE
Germany
Prior art keywords
fuel
supply system
fuel supply
valve
internal combustion
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.)
Expired - Lifetime
Application number
DE19516144A
Other languages
German (de)
Inventor
Klaus Dipl Ing Roesler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19516144A priority Critical patent/DE19516144C1/en
Application granted granted Critical
Publication of DE19516144C1 publication Critical patent/DE19516144C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
    • F02B69/02—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel
    • F02B69/04—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different fuel types, other than engines indifferent to fuel consumed, e.g. convertible from light to heavy fuel for gaseous and non-gaseous fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/02—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with gaseous fuels
    • F02D19/026—Measuring or estimating parameters related to the fuel supply system
    • F02D19/027—Determining the fuel pressure, temperature or volume flow, the fuel tank fill level or a valve position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • F02D19/0615—Switch-over from one fuel to another being initiated by automatic means, e.g. based on engine or vehicle operating conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0663—Details on the fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02D19/0686—Injectors
    • F02D19/0692—Arrangement of multiple injectors per combustion chamber
    • 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
    • F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
    • F02M13/08—Carburettors adapted to use liquid and gaseous fuels, e.g. alternatively
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10177—Engines having multiple fuel injectors or carburettors per cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The unit has a first supply system for injection of a liquid fuel, and a second supply system to supply a fuel as starter fuel. The second system also supplies a gaseous fuel as a warm-up fuel after the cold start of an IC engine, until the exhaust treatment unit is fully effective. The second system has a gas collection pipe (4) for the gaseous fuel on the low pressure side. A number of nozzles (5-8) corresponding to the number of engine cylinders branch off the gas collection pipe. The system also has a valve regulator system upstream of a pressure regulation valve (9) on the high pressure side, and a second valve regulator system between the valve and the gas collection pipe on the low pressure side.

Description

Die Erfindung betrifft eine Kraftstoffversorgungsanlage für eine gemischverdichtende Brennkraftmaschine nach den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen.The invention relates to a fuel supply system for a mixture-compressing internal combustion engine according to those in the preamble of claim 1 specified features.

Es sind z. B. aus der DE 29 29 271 C2 Kraftstoffversorgungs­ anlagen für Brennkraftmaschinen bekannt, die zur Verbesserung des Kaltstarts zündfähigeren Kraftstoff als Anlaßkraftstoff während des Anlaßvorganges verwenden.There are e.g. B. from DE 29 29 271 C2 fuel supply Plants for internal combustion engines known to improve of the cold start more ignitable fuel than starting fuel use during the starting process.

Somit wird neben dem konventionellen flüssigen Kraftstoff als Betriebskraftstoff auf Äther basierender Kraftstoff als Anlaßhilfe eingesetzt, der mit der Ansaugluft günstigere Verbrennungseigenschaften im kritischen Kaltstartbereich er­ möglicht, der aber auch die Abgasemissionen während des Anlassens günstig beeinflußt.Thus, in addition to the conventional liquid fuel Operating fuel as ether based fuel Starting aid used, the cheaper with the intake air Combustion properties in the critical cold start area possible, but also the exhaust emissions during the Favorably influenced.

Der Erfindung liegt die Aufgabe zugrunde, eine Kraftstoff­ versorgungsanlage der gattungsgemäßen Art so auszubauen, daß sich die Schadstoffemissionen weiter erheblich reduzieren lassen.The invention has for its object a fuel Supply system of the generic type to be expanded so that pollutant emissions continue to decrease significantly to let.

Die Aufgabe wird durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst.The object is achieved in the characterizing part of patent claim 1 specified features solved.

Dadurch, daß der Brennkraftmaschine über den Kaltstart hinaus gasförmiger Kraftstoff bis zur wirksamen Arbeitstemperatur der Abgasnachbehandlungseinrichtung zugeführt wird, können die strengeren Abgasvorschriften, wie sie zukünftig in USA, Japan und auch in Europa üblich werden, wesentlich besser erfüllt werden als bei Verwendung lediglich konventionellen flüssigen Kraftstoffes während des gesamten Betriebsbereiches. Durch Umschaltung von dem einen Kraftstoffzuführsystem mit gas­ förmigem Kraftstoff auf das andere Kraftstoffzuführsystem mit flüssigem Kraftstoff nach der Warmlaufphase ist somit die Reichweite des Fahrzeuges nicht eingeschränkt.In that the internal combustion engine beyond the cold start gaseous fuel up to the effective working temperature of the Exhaust gas treatment device is supplied, the stricter emissions regulations, such as those in the future in the USA, Japan  and also become common in Europe are used as conventional liquid only Fuel throughout the operating range. By Switching from one fuel supply system with gas shaped fuel on the other fuel supply system liquid fuel after the warm-up phase is therefore the Range of the vehicle not restricted.

Aus der DE-OS 16 01 346 ist bekannt, gasförmige Kraftstoffe für Brennkraftmaschinen zu verwenden, sie dienen aber lediglich als Hilfsmittel beim Anlassen einer Brennkraftmaschine.DE-OS 16 01 346 discloses gaseous fuels for To use internal combustion engines, but they only serve as Tools for starting an internal combustion engine.

In den Unteransprüchen sind noch förderliche Weiterbildungen der Erfindung angegeben.In the subclaims there are still further developments Invention specified.

Der Gegenstand der Erfindung ist in der Zeichnung dargestellt und wird anhand eines Ausführungsbeispieles im folgenden näher beschrieben. Es zeigen:The object of the invention is shown in the drawing and will be explained in more detail below using an exemplary embodiment described. Show it:

Fig. 1 die erfindungsgemäße Ausführung eines Kraftstoffzuführsystemes mit gasförmigem Kraftstoff und Fig. 1 shows the embodiment of a fuel supply system with gaseous fuel and

Fig. 2 die Anordnung dieses Systems an der Brennkraftmaschine. Fig. 2 shows the arrangement of this system on the internal combustion engine.

In Fig. 1 ist ein sowohl als Anlaß- bzw. Starthilfe als auch für den Warmlauf einer gemischverdichtenden Brennkraftmaschine dienendes Kraftstoffzuführsystem 1 zur Optimierung der HC- und NOx-Emissionswerte gezeigt. Als Kraftstoff wird Erdgas verwendet, das in einer austauschbaren Gaspatrone 2 zur Verfügung steht. Der Gasdruck in der Patrone beträgt etwa 200 bar.In Fig. 1, an x both as tempering or starting aid as serving also for the warm-up of a mixture internal combustion engine fuel supply system 1 for optimizing the HC and NO emission levels is shown. Natural gas is used as fuel, which is available in an exchangeable gas cartridge 2 . The gas pressure in the cartridge is approximately 200 bar.

Die Gaspatrone 2 ist durch eine Gasleitung 3 mit einem Gassammelrohr 4 verbunden, an dem Düsen 5, 6, 7, 8 angeschlossen sind, deren Anzahl der Zylinderzahl der Brennkraftmaschine entspricht. Es können aber auch von dem Gassammelrohr 4 abzweigende Verbindungsleitungen zu den Düsen 5 bis 8 hinführen.The gas cartridge 2 is connected by a gas line 3 to a gas collecting tube 4 , to which nozzles 5 , 6 , 7 , 8 are connected, the number of which corresponds to the number of cylinders of the internal combustion engine. However, connecting lines branching from the gas collecting tube 4 can also lead to the nozzles 5 to 8 .

In der Gasleitung 3 ist ein Druckregler 9 angeordnet, der die Gasleitung 3 in einen hochdruckseitigen Leitungsabschnitt 10 und einen niederdruckseitigen Leitungsabschnitt 11 aufteilt.In the gas line 3, a pressure regulator 9 is arranged, which divides the gas pipe 3 into a high-pressure side duct section 10 and a low pressure side duct section. 11

In dem von der Gaspatrone 2 ausgehenden hochdruckseitigen Leitungsabschnitt 10 ist ein Handabsperrventil 12 für den Gaspatronentausch vorgesehen.In the line section 10 on the high-pressure side of the gas cartridge 2 , a manual shut-off valve 12 is provided for exchanging the gas cartridge.

Stromab dieses Handabsperrventiles 12 befindet sich eine erste Ventilsteuervorrichtung, die aus einem Elektromagnetventil 13 besteht und beim Notorstart geöffnet wird.Downstream of this manual shut-off valve 12 is a first valve control device, which consists of an electromagnetic valve 13 and is opened when the emergency starts.

Eine zweite Ventilsteuervorrichtung ist niederdruckseitig angeordnet und besteht ebenfalls aus einem Elektromagnetventil 14, das aus Sicherheitsgründen eingebaut ist für den Fall, wenn das System gasundicht wird.A second valve control device is arranged on the low pressure side and also consists of an electromagnetic valve 14 which is installed for safety reasons in the event that the system becomes gas-leaky.

Die als Einblasedüsen wirkenden Düsen 5 bis 8 werden individuell von einem elektronischen Steuergerät 15 intermittierend ange­ steuert, und zwar in Abhängigkeit von Last- und Drehzahl.The acting as injection nozzles 5 to 8 are individually intermittently controlled by an electronic control unit 15 , depending on the load and speed.

Mit 16, 17 sind Sensoren bezeichnet, von denen der Sensor 16 die Gastemperatur und der Sensor 17 den Gasdruck im Gassammelrohr 4 für das Steuergerät 15 erfaßt. 16 , 17 designate sensors, of which the sensor 16 detects the gas temperature and the sensor 17 the gas pressure in the gas collecting tube 4 for the control unit 15 .

Ein hochdruckseitiger Druckgeber 18 stromab des Elektromagnet­ ventiles 14 dient zur Gasanzeige.A high pressure side pressure transducer 18 downstream of the solenoid valve 14 is used for gas display.

In Fig. 2 ist ein Saugrohr 19 der Brennkraftmaschine mit einer von dem Gassammelrohr 4 abzweigenden Einblasedüse für das Ein­ bringen des gasförmigen Kraftstoffes gezeigt. Die Einblasdüse mündet stromauf einer Einspritzdüse 20, durch die flüssiger Kraftstoff in das Saugrohr 19 eingespritzt wird. Die Einblase­ düse kann aber auch stromab der Einspritzdüse 20 angeordnet sein.In Fig. 2, an intake manifold 19 of the internal combustion engine is shown with an injection nozzle branching off from the gas collection tube 4 for bringing in the gaseous fuel. The injection nozzle opens upstream of an injection nozzle 20 , through which liquid fuel is injected into the intake manifold 19 . The injection nozzle can also be arranged downstream of the injection nozzle 20 .

Die Einspritzdüse 20 ist Teil eines üblichen mit flüssigem Kraftstoff betriebenen Kraftstoffzuführsystemes, das getrennt von dem gasbetriebenen Kraftstoffzuführsystem angeordnet ist. Beide Systeme arbeiten unabhängig voneinander.The injector 20 is part of a conventional liquid fuel-operated fuel delivery system that is separate from the gas-powered fuel delivery system. Both systems work independently of each other.

Beim Kaltstart und niedrigen Umgebungstemperaturen wird zunächst als Kraftstoff Gas, das überwiegend aus Methan bestehen kann, verwendet. Der Gasbetrieb wird in der sich an die Kaltstart­ phase anschließende Warmlaufphase aufrechterhalten. Sobald die Brennkraftmaschine und die Abgasnachbehandlungseinrichtung aus­ reichend erwärmt sind, das bedeutet, daß die Wirksamkeit dieser Abgasnachbehandlungseinrichtung bzw. des Katalysators erreicht ist, wird auf den üblichen flüssigen Kraftstoff (Ottokraftstoff) umgeschaltet.For cold starts and low ambient temperatures, first of all as a fuel gas, which can mainly consist of methane, used. The gas operation is in the process of the cold start Maintain subsequent warm-up phase. As soon as the Internal combustion engine and the exhaust gas aftertreatment device are warmed sufficiently, which means that the effectiveness of this Exhaust aftertreatment device or the catalyst reached is on the usual liquid fuel (petrol) switched.

Durch den Gasbetrieb auch in der Warmlaufphase werden Gemischbildungsprobleme bei kalter Brennkraftmaschine vermieden. Dadurch können die Schadstoffemissionen, insbesondere die HC- Emission, und der Kraftstoffverbrauch gesenkt werden.Due to the gas operation also in the warm-up phase Problems of mixture formation in a cold internal combustion engine avoided. As a result, the pollutant emissions, especially the HC Emission, and fuel consumption can be reduced.

Claims (7)

1. Kraftstoffversorgungsanlage an einer Brennkraftmaschine mit einem ersten Kraftstoffzuführsystem zum Einspritzen eines flüssigen Betriebskraftstoffes mittels Kraftstoffeinspritzdüsen und mit einem zweiten Kraftstoffzuführsystem mit einer Düse zum Einbringen eines Kraftstoffes als Anlaßkraftstoff aus einem mit einer Ventilsteuervorrichtung versehenen Behälter, dadurch gekennzeichnet, daß das zweite Kraftstoffzuführsystem gasförmigen Kraftstoff auch als Warmlaufkraftstoff nach dem Kaltstart einer mit einer Abgasnachbehandlungseinrichtung ausgerüsteten Brennkraftmaschine bis zum Erreichen der Wirksamkeit der Abgasnachbehandlungsein­ richtung liefert.1. Fuel supply system on an internal combustion engine with a first fuel supply system for injecting a liquid operating fuel by means of fuel injection nozzles and with a second fuel supply system with a nozzle for introducing fuel as a starting fuel from a container provided with a valve control device, characterized in that the second fuel supply system also gaseous fuel as Warm-up fuel after the cold start of an internal combustion engine equipped with an exhaust gas aftertreatment device until the effectiveness of the exhaust gas aftertreatment device supplies. 2. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß das zweite Kraftstoffzuführsystem ein niederdruckseitig liegendes Gassammelrohr (4) für den gasförmigen Kraftstoff als Anlaß und Warmlaufkraftstoff aufweist, von dem eine der Zylinderzahl der Brennkraftmaschine entsprechende Anzahl von Düsen (5, 6, 7, 8) abzweigt.2. Fuel supply system according to claim 1, characterized in that the second fuel supply system has a low-pressure gas collector tube ( 4 ) for the gaseous fuel as a starting and warm-up fuel, one of which corresponds to the number of cylinders of the internal combustion engine number of nozzles ( 5 , 6 , 7 , 8 ) branches off. 3. Kraftstoffversorgungsanlage nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß das zweite Kraftstoffzuführsystem neben der stromauf eines Druckregelventiles (9) hochdruckseitig liegenden Ventilsteuer­ vorrichtung auch eine zwischen dem Druckregelventil (9) und dem Gassammelrohr (4) niederdruckseitig angeordnete Ventilsteuer­ vorrichtung enthält. 3. Fuel supply system according to claims 1 and 2, characterized in that the second fuel supply system in addition to the upstream of a pressure control valve ( 9 ) high-pressure valve control device also includes a valve control device arranged between the pressure control valve ( 9 ) and the gas manifold ( 4 ) on the low-pressure side. 4. Kraftstoffversorgungsanlage nach Anspruch 3, dadurch gekennzeichnet, daß die Ventilsteuervorrichtungen von einem Steuergerät (15) ansteuerbare Elektromagnetventile (13; 14) sind.4. Fuel supply system according to claim 3, characterized in that the valve control devices from a control device ( 15 ) are controllable electromagnetic valves ( 13 ; 14 ). 5. Kraftstoffversorgungsanlage nach den Ansprüchen 1, 2 und 4, mit jeweils einer Kraftstoffeinspritzdüse an den Saugrohren der Brennkraftmaschine, dadurch gekennzeichnet, daß in jedem Saugrohr (19) stromauf der Kraftstoffeinspritzdüse (20) des ersten Kraftstoffzuführsystemes eine Düse (5) des zweiten Kraftstoffzuführsystemes vorgesehen ist und jede Düse (5) durch das Steuergerät (15) last- und drehzahlabhängig und intermittierend ansteuerbar ist.5. Fuel supply system according to claims 1, 2 and 4, each having a fuel injection nozzle on the intake manifolds of the internal combustion engine, characterized in that a nozzle ( 5 ) of the second fuel supply system is provided in each intake manifold ( 19 ) upstream of the fuel injection nozzle ( 20 ) of the first fuel supply system and each nozzle ( 5 ) can be controlled intermittently by the control device ( 15 ) depending on the load and speed. 6. Kraftstoffversorgungsanlage nach Anspruch 1, dadurch gekennzeichnet, daß der den gasförmigen Kraftstoff aufnehmende Behälter eine austauschbare Gaspatrone (2) ist.6. Fuel supply system according to claim 1, characterized in that the container holding the gaseous fuel is an exchangeable gas cartridge ( 2 ). 7. Kraftstoffversorgungsanlage nach Anspruch 6, dadurch gekennzeichnet, daß zwischen der Gaspatrone (2) und dem hochdruckseitigen Elektromagnetventil (13) ein Handabsperrventil angeordnet ist.7. Fuel supply system according to claim 6, characterized in that a manual shut-off valve is arranged between the gas cartridge ( 2 ) and the high-pressure side electromagnetic valve ( 13 ).
DE19516144A 1995-05-03 1995-05-03 Fuel supply unit for mixture-compressing IC engine Expired - Lifetime DE19516144C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19516144A DE19516144C1 (en) 1995-05-03 1995-05-03 Fuel supply unit for mixture-compressing IC engine

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Application Number Priority Date Filing Date Title
DE19516144A DE19516144C1 (en) 1995-05-03 1995-05-03 Fuel supply unit for mixture-compressing IC engine

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DE19516144C1 true DE19516144C1 (en) 1996-07-04

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000041905A1 (en) * 1999-01-13 2000-07-20 Bg Intellectual Property Ltd Multiple fuel vehicle
WO2004090309A1 (en) * 2003-04-10 2004-10-21 Volkswagen Do Brasil Ltda. A feeding system for an internal combustion engine working with plurality of fuels, and a method of starting such an engine
WO2005028846A1 (en) * 2003-08-29 2005-03-31 Daimlerchrysler Ag Internal combustion engine
RU2291316C1 (en) * 2005-08-03 2007-01-10 ООО "Завод "Газпроммаш" Device for delivering natural gas with external mixing into engine
DE102006025920A1 (en) * 2006-06-02 2007-12-06 Siemens Ag Internal-combustion engine`s fuel system controlling method, involves operating internal-combustion engine of vehicle with alcohol/petrol mixing fuels from fuel system, and using gaseous fuel as starting fuel during cold start of engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929271C2 (en) * 1978-07-20 1993-10-21 James William Burke Device for the automatic injection of a starting fuel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929271C2 (en) * 1978-07-20 1993-10-21 James William Burke Device for the automatic injection of a starting fuel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000041905A1 (en) * 1999-01-13 2000-07-20 Bg Intellectual Property Ltd Multiple fuel vehicle
WO2004090309A1 (en) * 2003-04-10 2004-10-21 Volkswagen Do Brasil Ltda. A feeding system for an internal combustion engine working with plurality of fuels, and a method of starting such an engine
WO2005028846A1 (en) * 2003-08-29 2005-03-31 Daimlerchrysler Ag Internal combustion engine
RU2291316C1 (en) * 2005-08-03 2007-01-10 ООО "Завод "Газпроммаш" Device for delivering natural gas with external mixing into engine
DE102006025920A1 (en) * 2006-06-02 2007-12-06 Siemens Ag Internal-combustion engine`s fuel system controlling method, involves operating internal-combustion engine of vehicle with alcohol/petrol mixing fuels from fuel system, and using gaseous fuel as starting fuel during cold start of engine

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