EP0906499A1 - Systeme d'allumage pour moteur a gaz - Google Patents

Systeme d'allumage pour moteur a gaz

Info

Publication number
EP0906499A1
EP0906499A1 EP97925997A EP97925997A EP0906499A1 EP 0906499 A1 EP0906499 A1 EP 0906499A1 EP 97925997 A EP97925997 A EP 97925997A EP 97925997 A EP97925997 A EP 97925997A EP 0906499 A1 EP0906499 A1 EP 0906499A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
ignition
working
chamber
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.)
Ceased
Application number
EP97925997A
Other languages
German (de)
English (en)
Inventor
Karl Stellwagen
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.)
Caterpillar Energy Solutions GmbH
Original Assignee
Motoren Werke Mannheim 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 Motoren Werke Mannheim AG filed Critical Motoren Werke Mannheim AG
Publication of EP0906499A1 publication Critical patent/EP0906499A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/02—Engines characterised by precombustion chambers the chamber being periodically isolated from its 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
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to an internal combustion engine and a method for operating such an internal combustion engine, the internal combustion engine having a crankcase in which a crankshaft is rotatably mounted, on which at least one connecting rod is articulated, which carries a piston which is in a cylinder head covered cylinder is movable to form a work space, and wherein the work space can be supplied with work equipment.
  • Such an internal combustion engine is known from DE-OS 28 26 807.
  • an oxygen-containing mixture is first compressed and thereby heated and then ignited in subsequent combustion cycles, whereupon the combustion gases expand.
  • This working method is further developed in that at least some of the fuel used is heated to at least its ignition temperature before being introduced into the process and is then blown into the oxygen-containing mixture in the gaseous state in accordance with a law controlling the combustion process.
  • This method and a correspondingly designed internal combustion engine require a high level of construction and are therefore complex to implement, the ignition control or ignition of the mixture still being subject to fluctuations.
  • the invention has for its object to provide an internal combustion engine and a method for operating the internal combustion engine, which enables a very precise and safe ignition control of the working means.
  • This object is achieved in accordance with the method for operating the internal combustion engine in that compressed and ignited working fluid can be stored in a blowing chamber assigned to the working space and can be introduced into the working space for igniting newly supplied working fluid.
  • the internal combustion engine designed for this method is distinguished by the fact that a compressed injection chamber which receives compressed working fluid is assigned to the working space and can be sealed off from the working space.
  • This method and this training ensure safe ignition and stable combustion of the working fluid, which in the supplied state consists of a fuel-air mixture.
  • This fuel-air mixture is in particular a gas-air mixture, so that the present invention can be used in particular in gas engines.
  • the known spark ignition for Otto engines has the disadvantage that the flame core formation and the resulting combustion are subject to strong cycle fluctuations.
  • a valve which shuts off the blowing chamber from the working space is opened to introduce the compressed and ignited working medium before the desired ignition.
  • the ignited gas-air mixture located in the blowing chamber is at a higher pressure than the newly supplied, unburned mixture, so that the newly supplied mixture quickly overflows (blowing), mixing and igniting.
  • the injection chamber is located directly adjacent to the work area or else in a prechamber which then adjoins the work area.
  • valve is closed after the ignition has taken place.
  • an early point in time is selected at which the mixture just ignited is very hot and under high pressure. Since this pressure prevails both in the working space and in the antechamber, no special precautions need to be taken to fill the antechamber and there are also no large valve closing forces.
  • the blowing chamber is thermally insulated on the inner wall. It is thereby achieved that the radiation losses between two successive working cycles are on the one hand very low, and on the other hand there is no additional thermal load on the adjacent components, in particular the cylinder head.
  • the blowing chamber can be shut off from the prechamber or the working space by a valve and the valve can be actuated hydraulically and / or electrically. mastered switching element.
  • the hydraulic and / or electrical actuation is selected here according to the circumstances of the respective internal combustion engine, the size of the valve and the availability of the hydraulic system in particular playing a role.
  • the hydraulic system is a high-pressure system, a solenoid valve being switched on in a feed and / or drain line to the switching element.
  • the solenoid valve has a control slide valve which controls a high-pressure line in such a way that the high-pressure line can be connected to a low-pressure line.
  • the solenoid valve is advantageously a valve which is known and tested from injection technology and which is used in injection technology in the high-pressure fuel system to control the injection.
  • the control slide is actuated by an electromagnet, is arranged transversely to the supply and / or discharge line in a corresponding valve body and, in the closed state, releases the unimpeded flow of flow in the high-pressure line via an annular space in the valve body. In the opened state of the control slide, this high-pressure line is then connected via a constriction in the control slide to a low-pressure line arranged laterally next to the high-pressure line. A certain minimum pressure remains in the overall system even when open.
  • the internal combustion engine has a crankcase 1 in which a crankshaft 2 is rotatably mounted.
  • a connecting rod 3 is fastened to the crankshaft 2 and carries a piston 4 which can be moved in a cylinder liner 5.
  • the cylinder liner 5 or the crankcase 1 is closed at the top by a cylinder head 6, a working space 7 being formed between the piston 4 and the cylinder head 6.
  • the inlet and outlet of the working fluid in the form of gas and air is carried out via a conventional gas exchange device with a camshaft 8 (partially shown) valve train 9 and (partially shown) gas exchange channels 10.
  • a prechamber 11 is inserted in the cylinder head 6, into which a blowing chamber 21 is inserted and which can be closed to the prechamber 11 by a valve 12.
  • the valve 12 is actuated by a switching element 13, which in turn is controlled by a solenoid valve 14.
  • the solenoid valve 14 is controlled by an electronic control device 15.
  • the control device 15 can also control all other motor functions.
  • the solenoid valve 14 controls a high-pressure line 16a, 16b, through which hydraulic fluid, in particular oil, is conducted from a reservoir 17 to the switching element 13.
  • the reservoir 17 is filled with hydraulic fluid from a tank 20 by a pump 18, which is operated, for example, by an electric motor 19.
  • the internal combustion engine is initially a gas engine with a plurality of cylinder units and operates according to the four-stroke process.
  • Working fluid supplied from the piston 4 is compressed in the form of an air-gas mixture in the working space 7 and must be ignited in the region of the ignition TDC. This is done by working means enclosed in the blowing chamber 21 in the form of an ignited gas-air mixture of the last working cycle. This mixture is under high pressure and is very hot due to the combustion.
  • the valve 12 In the area shortly before the desired ignition of the fresh mixture located in the working chamber 7 (and also the pre-chamber 11), the valve 12 is opened so that the hot mixture under high pressure in the blowing chamber 21 enters the working chamber 7 (and the pre-chamber) chamber 11) flows out and ignites the fresh mixture there. Immediately after the ignition has taken place, the valve 12 is closed again and thus hot working fluid which has been burned again for the next working cycle is stored in the blowing chamber 21.
  • the ignition device 22 is provided in the form of a spark plug or a glow plug. This ignition device 22 is optionally also used in a controlled manner during the warm-up phase of the internal combustion engine, as required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

Dans un type connu de moteur à combustion interne, un mélange contenant de l'oxygène est d'abord comprimé lors de cycles successifs et par conséquent chauffé, puis est enflammé, les gaz de combustion se détendant alors. Une partie du carburant utilisé est porté au moins à sa température d'inflammation avant d'être introduit dans le processus, puis est injecté à l'état gazeux dans le mélange contenant de l'oxygène suivant une règle régissant le processus de combustion. Ce procédé et un moteur à combustion interne réalisé en conséquence sont très complexes en termes de structure et sont de ce fait coûteux à mettre en oeuvre et à réaliser, et la commande d'allumage ou l'inflammation du mélange demeure sujette à des fluctuations. Selon l'invention, il est prévu un procédé d'exploitation du moteur à combustion interne selon lequel un milieu actif comprimé et enflammé est stocké dans une chambre d'injection (21) associée à la chambre de travail (7) et est introduit pour enflammer du milieu actif nouvellement amené dans la chambre de travail (7). Le moteur à combustion interne adapté à ce procédé se caractérise en ce qu'une chambre d'injection (21), contenant un milieu actif comprimé et pouvant être fermée hermétiquement par rapport à la chambre de travail (7), est associée à ladite chambre de travail (7).
EP97925997A 1996-06-22 1997-06-11 Systeme d'allumage pour moteur a gaz Ceased EP0906499A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19624964 1996-06-22
DE19624964A DE19624964A1 (de) 1996-06-22 1996-06-22 Zündsystem für einen Gasmotor
PCT/EP1997/003033 WO1997049906A1 (fr) 1996-06-22 1997-06-11 Systeme d'allumage pour moteur a gaz

Publications (1)

Publication Number Publication Date
EP0906499A1 true EP0906499A1 (fr) 1999-04-07

Family

ID=7797678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97925997A Ceased EP0906499A1 (fr) 1996-06-22 1997-06-11 Systeme d'allumage pour moteur a gaz

Country Status (4)

Country Link
EP (1) EP0906499A1 (fr)
JP (1) JP2000505173A (fr)
DE (1) DE19624964A1 (fr)
WO (1) WO1997049906A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19923346C2 (de) * 1999-02-19 2002-11-14 Stefanie Dosch Motor
EP1054142A3 (fr) * 1999-05-21 2002-01-23 Stefanie Dosch Moteur

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH466915A (de) * 1968-03-08 1968-12-31 Buss Ag Verfahren zum Behandeln von staub- und pulverförmigen Materialien und Einrichtung zur Ausübung des Verfahrens
US3945352A (en) * 1974-10-16 1976-03-23 Foundation For Research And Engineering Education Fuel vaporization and injection system for internal combustion engine
DE2530837A1 (de) * 1975-07-10 1977-01-13 Heinrich Roessel Verbrennungskraftmaschine
DE2826807C2 (de) * 1978-06-19 1987-05-07 Werner 7148 Remseck Mayer Brennkraftmaschine
US4372264A (en) * 1979-12-26 1983-02-08 Trucco Horacio A Internal combustion engine for diverse fuels
AT402432B (de) * 1988-02-25 1997-05-26 Avl Verbrennungskraft Messtech Brennkraftmaschine
AT399911B (de) * 1988-03-25 1995-08-25 Avl Verbrennungskraft Messtech Einrichtung zum betrieb einer brennkraftmaschine
JPH086587B2 (ja) * 1988-10-28 1996-01-24 いすゞ自動車株式会社 副燃焼室式断熱エンジン
US5067458A (en) * 1989-03-27 1991-11-26 Caterpillar Inc. Fuel combustion system and method of operation for an otto-cycle internal combustion engine
JPH0647929B2 (ja) * 1989-09-29 1994-06-22 いすゞ自動車株式会社 副室式アルコールエンジン
JPH0692750B2 (ja) * 1989-09-30 1994-11-16 いすゞ自動車株式会社 燃焼室可変エンジン
US5010860A (en) * 1990-04-30 1991-04-30 Thomas Broussard Internal combustion engine with twin combustion chambers
US5109817A (en) * 1990-11-13 1992-05-05 Altronic, Inc. Catalytic-compression timed ignition
JP3047493B2 (ja) * 1991-03-14 2000-05-29 いすゞ自動車株式会社 断熱副室式エンジン
EP0588592B1 (fr) * 1992-09-14 1999-04-14 Isuzu Ceramics Research Institute Co., Ltd. Moteur à combustion interne à haut taux de compression
DE69315154T2 (de) * 1992-09-14 1998-03-05 Isuzu Ceramics Res Inst Brennkraftmaschine mit Vorkammer
JP3048476B2 (ja) * 1992-09-29 2000-06-05 株式会社いすゞセラミックス研究所 リフト量可変制御弁を備えた副室式ガスエンジン
EP0597713B1 (fr) * 1992-11-11 1997-05-14 Isuzu Ceramics Research Institute Co., Ltd. Unité de commande pour moteurs à taux de compression élevé utilisant des carburant vaporisés

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9749906A1 *

Also Published As

Publication number Publication date
WO1997049906A1 (fr) 1997-12-31
DE19624964A1 (de) 1998-01-02
JP2000505173A (ja) 2000-04-25

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