DE4244328A1 - Air-cooled liquid gas engine - Google Patents

Air-cooled liquid gas engine

Info

Publication number
DE4244328A1
DE4244328A1 DE4244328A DE4244328A DE4244328A1 DE 4244328 A1 DE4244328 A1 DE 4244328A1 DE 4244328 A DE4244328 A DE 4244328A DE 4244328 A DE4244328 A DE 4244328A DE 4244328 A1 DE4244328 A1 DE 4244328A1
Authority
DE
Germany
Prior art keywords
evaporator
engine
air
oil
heat exchange
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.)
Withdrawn
Application number
DE4244328A
Other languages
German (de)
Inventor
Juergen Lampe
Christian Weber
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.)
Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DE4244328A priority Critical patent/DE4244328A1/en
Publication of DE4244328A1 publication Critical patent/DE4244328A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M21/06—Apparatus for de-liquefying, e.g. by heating
    • 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

Abstract

The engine has an oil circuit and an evaporator (5) for vaporising the liquid gas, with a heat exchange bore, through which the engine oil is circulated, for warming the evaporator. The evaporator lies in the exhaust stream of the engine cooling air and/or the heat exchange bore is coupled to the oil circuit via a throttled bypass line.Pref. a smooth pipe lies in the cooling air exhaust stream and conducts the evaporated gas from the evaporator to the gas mixer (7) feeding the combustible gas mixture to the engine.

Description

Die Erfindung betrifft einen luftgekühlten Flüssiggasmotor nach dem Oberbegriff des Anspruchs 1.The invention relates to an air-cooled LPG engine according to the preamble of claim 1.

Aus der DE-OS 38 40 622 ist ein derartiger insbesondere luft­ gekühlter Flüssiggasmotor bekannt, bei dem der Ölkühler und der Verdamp­ fer, in dem Flüssiggas zum Beimischen zur Verbrennungsluft des Motors verdampft wird, zu einer Baueinheit zusammengefaßt sind. Auf diese Weise wird das Motoröl auch durch den Verdampfer geführt, wenn ein entspre­ chendes Ventil betätigt wird. Hierdurch kann die Wärme des Motoröls auch zum Verdampfen verwendet werden. Bei tiefen Umgebungstemperaturen be­ steht jedoch nach Kaltstart die Gefahr der Kaltölstopfenbildung, abgese­ hen davon, daß hierbei infolge Kühlung des Ölkühlers gleichzeitig auch eine Kühlung des Verdampfers stattfindet, was sich beim Kaltstart bei tiefen Temperaturen ungünstig auswirken kann.From DE-OS 38 40 622 such is in particular air cooled liquid gas engine known in which the oil cooler and the evaporator fer, in the liquid gas to be added to the combustion air of the engine is evaporated, are combined into one structural unit. In this way the engine oil is also led through the evaporator if one corresponds appropriate valve is actuated. This can also heat the engine oil be used for evaporation. At low ambient temperatures be however, there is a risk of cold oil plug formation after a cold start hen assume that due to the cooling of the oil cooler at the same time cooling of the evaporator takes place, which occurs during a cold start low temperatures can have an adverse effect.

Aufgabe der Erfindung ist es, einen luftgekühlten Flüssiggas­ motor nach dem Oberbegriff des Anspruchs 1 zu schaffen, bei dem nach Kaltstart bei tiefen Umgebungstemperaturen die Gefahr eines Funktions­ ausfalls des Verdampfers minimalisiert ist.The object of the invention is an air-cooled liquid gas to create motor according to the preamble of claim 1, according to Cold start at low ambient temperatures the danger of a function failure of the evaporator is minimized.

Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 gelöst. This task is performed according to the characteristic part of the Claim 1 solved.  

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und dem Unteranspruch zu entnehmen.Further refinements of the invention are as follows Description and the dependent claim.

Die Erfindung wird nachstehend anhand eines in der beigefügten Abbildung dargestellten Ausführungsbeispiels näher erläutert, die sche­ matisch den Aufbau einer luftgekühlten Flüssiggasanlage zeigt.The invention is illustrated below in the attached Figure illustrated embodiment illustrated, the cal shows the structure of an air-cooled LPG system.

Die dargestellte Flüssiggasanlage umfaßt einen Flüssiggastank 1, der über eine mit einem Kraftstoffilter 2 und ein Magnetventil 3 ver­ sehene Kraftstoffleitung 4 mit einem Verdampfer 5 verbunden ist. Ver­ dampftes Flüssiggas wird über eine Beruhigungsstrecke für das verdampfte Gas in Form eines glatten Rohrs 6, in dem auch eine Nachverdampfung stattfindet, einem Gasmischer 7 zugeführt, dem außerdem über eine mit einem Luftfilter 8 versehene Luftansaugleitung 9 Verbrennungsluft zuge­ führt wird. Das im Gasmischer 7 gebildete Gemisch wird über eine Dros­ selklappe 10 und einen sich anschließenden Ansaugkrümmer 11 in die je­ weiligen in einem Motorblock 12 befindlichen Zylinder 13 eingespeist. Der Motorblock 12 ist mit einer Luftkühlung 14 (Gebläse) versehen. Die Abgase werden über einen Abgaskrümmer 15 und einen Abgasschalldämpfer 16 abgeführt. Außerdem ist eine Ausgleichsleitung 17 zwischen dem Verdamp­ fer 5 und der Luftansaugleitung 9 vorgesehen.The LNG plant shown comprises a liquid gas tank 1 via a ver with a fuel filter 2, and a solenoid valve 3 provided fuel line 4 is connected to an evaporator 5. Ver vaporized liquefied petroleum gas is supplied via a calming section for the vaporized gas in the form of a smooth tube 6 , in which post-evaporation also takes place, to a gas mixer 7 , which is also supplied with combustion air via an air filter 8 provided with an air intake line 9 . The mixture formed in the gas mixer 7 is fed via a throttle valve 10 and an adjoining intake manifold 11 into the respective cylinders 13 located in an engine block 12 . The engine block 12 is provided with air cooling 14 (blower). The exhaust gases are discharged via an exhaust manifold 15 and an exhaust silencer 16 . In addition, a compensating line 17 is provided between the evaporator 5 and the air intake line 9 .

Der Verdampfer 5 ist hierbei im Abluftstrom der Motorkühlluft angeordnet, so daß er über die erwärmte Motorkühlluft Wärme empfängt, wodurch nach Kaltstart bei tiefen Umgebungstemperaturen die Gefahr eines Funktionsausfalls des Verdampfers 5 minimalisiert wird. Das glatte Rohr 6 ist ebenfalls unterhalb einer Abdeckhaube für den Motor im Abluftstrom der Motorkühlluft angeordnet, wodurch in diesem abgesehen von der Beru­ higung eine Nachverdampfung des im Verdampfer 5 verdampften Flüssiggases stattfinden kann.The evaporator 5 is arranged in the exhaust air flow of the engine cooling air, so that it receives heat via the heated engine cooling air, whereby the risk of malfunction of the evaporator 5 is minimized after a cold start at low ambient temperatures. The smooth tube 6 is also arranged below a hood for the engine in the exhaust air stream of the engine cooling air, whereby in this apart from the reassurance, post-evaporation of the liquid gas evaporated in the evaporator 5 can take place.

Gleichzeitig kann der mit einer Wärmeaustauschbohrung versehe­ ne Verdampfer 5 über eine mit einer Drossel 18 (beispielsweise mit einem Durchmesser von 2,5 mm) versehene Bypassleitung 19, die etwa vom Haupt­ ölrohr im Motorblock 12 abzweigt, mit Motoröl beaufschlagt werden, das in die Ölwanne zurückfließt. Die Drossel 18 begrenzt die maximal aus dem Hauptölrohr zu entnehmende Ölmenge. Hierdurch empfängt der Verdampfer 5 auch über das erwärmte Motoröl Wärme. At the same time, the provided with a heat exchange bore ne evaporator 5 via a throttle 18 (for example with a diameter of 2.5 mm) provided bypass line 19 , which branches off from the main oil pipe in the engine block 12 , can be acted upon with engine oil that enters the oil pan flows back. The throttle 18 limits the maximum amount of oil that can be extracted from the main oil pipe. As a result, the evaporator 5 also receives heat via the heated engine oil.

In der Wärmeaustauschbohrung des Verdampfers 5 sind Ölturbola­ toren angeordnet, die das in der Wärmeaustauschbohrung befindliche, vom Motorblock 12 im Nebenstrom zugeführte Öl zwangsweise in Bewegung ver­ setzen, um beim Kaltstart bei tiefen Temperaturen eine Kaltölstopfenbil­ dung zu vermeiden.In the heat exchange bore of the evaporator 5 , oil turbola gates are arranged which force the oil located in the heat exchange bore, which is supplied from the engine block 12 in the bypass flow, to prevent a cold oil plug formation when cold starting at low temperatures.

Claims (2)

1. Luftgekühlter Flüssiggasmotor mit einem Ölkreislauf und mit einem Verdampfer (5) zum Verdampfen von Flüssiggas, der mit einer Wärme­ austauschbohrung versehen ist, durch die Motoröl zum Erwärmen des Ver­ dampfers (5) hindurchführbar ist, dadurch gekennzeichnet, daß der Verdampfer (5) im Abluftstrom der Motorkühlluft angeordnet und/ oder die mit Ölturbolatoren versehene Wärmeaustauschbohrung über einen gedrosselten Bypass (19) mit dem Ölkreislauf verbunden ist.1. Air-cooled LPG engine with an oil circuit and with an evaporator ( 5 ) for evaporating liquefied gas, which is provided with a heat exchange hole, through which engine oil for heating the evaporator ( 5 ) can be passed, characterized in that the evaporator ( 5 ) arranged in the exhaust air flow of the engine cooling air and / or the heat exchange bore provided with oil turbolators is connected to the oil circuit via a throttled bypass ( 19 ). 2. Flüssiggasmotor nach Anspruch 1, dadurch gekennzeichnet, daß im Abluftstrom der Motorkühlluft ein glattes Beruhigungs- und Nach­ verdampfungsrohr (6) angeordnet ist.2. LPG engine according to claim 1, characterized in that a smooth calming and after evaporation tube ( 6 ) is arranged in the exhaust air stream of the engine cooling air.
DE4244328A 1992-12-28 1992-12-28 Air-cooled liquid gas engine Withdrawn DE4244328A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4244328A DE4244328A1 (en) 1992-12-28 1992-12-28 Air-cooled liquid gas engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4244328A DE4244328A1 (en) 1992-12-28 1992-12-28 Air-cooled liquid gas engine

Publications (1)

Publication Number Publication Date
DE4244328A1 true DE4244328A1 (en) 1994-06-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE4244328A Withdrawn DE4244328A1 (en) 1992-12-28 1992-12-28 Air-cooled liquid gas engine

Country Status (1)

Country Link
DE (1) DE4244328A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521591A1 (en) * 1995-06-14 1996-01-25 Kf Kuehlerbau Freiberg Gmbh Evapn. of liq. hydrogen which avoids icing
DE19635248A1 (en) * 1996-08-30 1998-03-05 Ficht Gmbh & Co Kg LPG engine
WO1998055758A1 (en) * 1997-06-03 1998-12-10 Antoine Di Gennaro System for vaporising liquefied petrol gas heated by engine lubricating oil
FR2822194A1 (en) * 2001-03-15 2002-09-20 Borel Method and device for vaporization of i.c. engine combustion gas comprises vaporizer/regulator and heat exchanger which pre-heats gas
FR2859778A1 (en) * 2003-09-16 2005-03-18 Herve Borel Liquefied petroleum gas delivering method for e.g. heating apparatus, involves transporting liquefied petroleum gas to destination of engine or heating units, and expanding gas by heating using heat transfer fluid e.g. hot air
US7377235B2 (en) 2004-09-21 2008-05-27 Bayerische Motoren Werke Aktiengesellschaft Heat exchanger for hydrogen-operated fuel supply systems

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524734A (en) * 1967-10-31 1970-08-18 Soko Kamiryo Device for promoting perfect combustion of liquefied petroleum gas for use in cars
DE2437483A1 (en) * 1974-08-03 1976-02-12 Daimler Benz Ag OTTO COMBUSTION MACHINE, ESPECIALLY FOR MOTOR VEHICLES
GB2057565A (en) * 1979-08-29 1981-04-01 Daimler Benz Ag Vaporising internal combustion engine fuel
EP0053359A1 (en) * 1980-11-28 1982-06-09 Takeda Chemical Industries, Ltd. Method of bonding films with a polyurethane adhesive
US4347824A (en) * 1980-06-26 1982-09-07 I.C.E. Company, Inc. LPG Fuel supply system
DE2613175C2 (en) * 1976-03-27 1983-11-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Device for charging an internal combustion engine to be operated with vaporized liquid gas
DE3426514A1 (en) * 1984-07-18 1986-01-23 Vincenzo Brugherio Mailand/Milano Carapella Device for the operation of an internal combustion engine exclusively with liquid gas
DE3840622A1 (en) * 1988-12-02 1990-06-07 Kloeckner Humboldt Deutz Ag Oil cooler-vaporiser unit for liquified gas engines

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524734A (en) * 1967-10-31 1970-08-18 Soko Kamiryo Device for promoting perfect combustion of liquefied petroleum gas for use in cars
DE2437483A1 (en) * 1974-08-03 1976-02-12 Daimler Benz Ag OTTO COMBUSTION MACHINE, ESPECIALLY FOR MOTOR VEHICLES
DE2613175C2 (en) * 1976-03-27 1983-11-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Device for charging an internal combustion engine to be operated with vaporized liquid gas
GB2057565A (en) * 1979-08-29 1981-04-01 Daimler Benz Ag Vaporising internal combustion engine fuel
DE2934797C2 (en) * 1979-08-29 1987-01-29 Daimler-Benz Ag, 7000 Stuttgart, De
US4347824A (en) * 1980-06-26 1982-09-07 I.C.E. Company, Inc. LPG Fuel supply system
EP0053359A1 (en) * 1980-11-28 1982-06-09 Takeda Chemical Industries, Ltd. Method of bonding films with a polyurethane adhesive
DE3426514A1 (en) * 1984-07-18 1986-01-23 Vincenzo Brugherio Mailand/Milano Carapella Device for the operation of an internal combustion engine exclusively with liquid gas
DE3840622A1 (en) * 1988-12-02 1990-06-07 Kloeckner Humboldt Deutz Ag Oil cooler-vaporiser unit for liquified gas engines

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JP 1-285649 A. In: Patents Abstracts of Japan, M-931, Feb.5,1990,Vol.14,No.60 *
KNECHT,Walter: Saurer Fahrzeug-Gasmotoren für LPG-Betrieb. In: ATZ Automobiltechnische Zeit- schrift, 80,1978,12, S.601-602 u.605-607 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19521591A1 (en) * 1995-06-14 1996-01-25 Kf Kuehlerbau Freiberg Gmbh Evapn. of liq. hydrogen which avoids icing
DE19635248A1 (en) * 1996-08-30 1998-03-05 Ficht Gmbh & Co Kg LPG engine
DE19635248C2 (en) * 1996-08-30 2001-05-23 Ficht Gmbh & Co Kg LPG engine
WO1998055758A1 (en) * 1997-06-03 1998-12-10 Antoine Di Gennaro System for vaporising liquefied petrol gas heated by engine lubricating oil
US6601571B1 (en) 1997-06-03 2003-08-05 Antoine Di Gennaro System for vaporizing liquefied petrol gas heated by engine lubricating oil
FR2822194A1 (en) * 2001-03-15 2002-09-20 Borel Method and device for vaporization of i.c. engine combustion gas comprises vaporizer/regulator and heat exchanger which pre-heats gas
FR2859778A1 (en) * 2003-09-16 2005-03-18 Herve Borel Liquefied petroleum gas delivering method for e.g. heating apparatus, involves transporting liquefied petroleum gas to destination of engine or heating units, and expanding gas by heating using heat transfer fluid e.g. hot air
US7377235B2 (en) 2004-09-21 2008-05-27 Bayerische Motoren Werke Aktiengesellschaft Heat exchanger for hydrogen-operated fuel supply systems

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: DEUTZ AKTIENGESELLSCHAFT, 51063 KOELN, DE

8139 Disposal/non-payment of the annual fee