JPS6036765A - Starting of spark ignition type gas engine - Google Patents

Starting of spark ignition type gas engine

Info

Publication number
JPS6036765A
JPS6036765A JP58145591A JP14559183A JPS6036765A JP S6036765 A JPS6036765 A JP S6036765A JP 58145591 A JP58145591 A JP 58145591A JP 14559183 A JP14559183 A JP 14559183A JP S6036765 A JPS6036765 A JP S6036765A
Authority
JP
Japan
Prior art keywords
engine
starting
gas
throttle valve
air
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
Application number
JP58145591A
Other languages
Japanese (ja)
Other versions
JPH0247593B2 (en
Inventor
Tadatoshi Maekawa
前川　忠敏
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 Mitsubishi Ltd
Original Assignee
Caterpillar Mitsubishi Ltd
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 Caterpillar Mitsubishi Ltd filed Critical Caterpillar Mitsubishi Ltd
Priority to JP58145591A priority Critical patent/JPS6036765A/en
Publication of JPS6036765A publication Critical patent/JPS6036765A/en
Publication of JPH0247593B2 publication Critical patent/JPH0247593B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F02D19/021—Control of components of the fuel supply system
    • F02D19/023—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into 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)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE:To prevent irregular combustion upon starting due to dilution of mixture by a method wherein a throttle valve is closed perfectly before cranking and, then, the throttle valve and a gas valve are opened to start the engine after excluding air in a suction pipe upon the starting of the spark ignition type gas engine. CONSTITUTION:Upon the starting of the spark ignition type gas engine, cranking is effected by driving a starter 7 based on the output of a control unit 8 and the throttle valve 5 as well as the gas supplying valve 3 are closed totally by an actuator 9. According to this method, the air in the downstream of the throttle valve 5 is excluded by the pumping action of the engine. Subsequently, the throttle valve 5 is opened slightly and the gas valve 3 is opened simultaneously by the output of the control unit 8 through the actuator 9 to effect a normal ignition. The driving of the starter 7 is stopped upon an initial explosion and the starting operation of the engine is finished. According to this method, the irregular combustion, caused by diluting the mixture with the air in the suction pipe, may be prevented upon the starting of the engine.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、たとえばビルディングの非常用発電設備等で
利用される火花点火式ガス機関の始動方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for starting a spark-ignition gas engine used, for example, in emergency power generation equipment for buildings.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

一般的に、１１１図に示す火花点火式ガス機関では、機
関＋１１が始動すると、その自吸作用で空気は空気清浄
器１２）から、また燃料ガスは開かれた電磁開閉式のガ
ス弁（３）からそれぞれ混合器１４）に供給され、適正
な混合気になって絞り弁（５）を経て吸気管（６）に導
入される。Generally, in the spark-ignition gas engine shown in Fig. 111, when the engine +11 starts, its self-priming action causes air to flow from the air purifier 12), and fuel gas to the opened electromagnetic gas valve (3). ) are respectively supplied to the mixer 14), and the resulting mixture is introduced into the intake pipe (6) via the throttle valve (5).

機関始動前は上記ガス弁（３）は閉じており、吸気管（
６）内には空気のみが充満しているので、従来の始動手
順では、機関１１＋がウランキングを始めると、ガス弁
（３）が開かれ、混合器１４）から出た混合気が始動を
容易にするため適当に開かれた絞り弁（５）を通り吸気
管（６）内の空気と混合し、希薄混合気となり機関筒内
に入る。Before starting the engine, the gas valve (3) is closed and the intake pipe (
6) is filled only with air, so in the conventional starting procedure, when the engine 11+ begins to run, the gas valve (3) is opened and the air-fuel mixture from the mixer 14) starts the engine. It passes through the throttle valve (5), which is opened appropriately for ease of use, and mixes with the air in the intake pipe (6), becoming a lean mixture that enters the engine cylinder.

この希薄な混合気は、機関の燃焼行程での筒内燃焼を次
サイクルの吸気行程まで長引かせ、逆火現象（吸気管（
６）内の次サイクルの混合気に着火する現象）を発生さ
せ、混合器１４）や空気清浄器（２）を焼損または破損
し、運転な不能にするおそれを生じさせていた。This lean air-fuel mixture prolongs in-cylinder combustion during the engine's combustion stroke until the intake stroke of the next cycle, causing a flashback phenomenon (intake pipe
6) in which the air-fuel mixture in the next cycle ignites), causing the mixer 14) and the air purifier (2) to burn out or be damaged, potentially rendering them inoperable.

〔発明の目的〕[Purpose of the invention]

本発明は、火花点火式ガス機関を計画的な始動手順によ
って始動させることにより、始動時の逆火現象を防止す
ることな目的とする。An object of the present invention is to prevent flashback during startup by starting a spark-ignition gas engine using a planned startup procedure.

〔発明の概要〕[Summary of the invention]

本発明の火花点火式ガス機関の始動方法は、空気清浄器
を経て吸入された空気とガス弁を経て供給された燃料ガ
スとを混合器で混合し絞り弁および吸気管な順次経て機
関筒内に供給するガス機関の始動にあたって、上記ガス
弁を閉じるとともに上記絞り弁を完全に閉じた状態でガ
ス機関の無点火でのウランキングを開始し、上記吸気管
内の空気を排出した後に、始動に必要な開度に上記絞り
弁な開き、上記ガス弁を開いて混合気を機関筒内に吸込
み、点火が行われて機関が回転し始めるとき、上記クラ
ンキングを停止してガス機関を点火始動することを特徴
とする構成のものである。The method for starting a spark-ignition gas engine of the present invention is to mix air taken in through an air purifier with fuel gas supplied through a gas valve in a mixer, and then pass through the throttle valve and intake pipe sequentially into the engine cylinder. When starting the gas engine, the gas valve is closed and the throttle valve is completely closed, and the engine starts to run without ignition, and after exhausting the air in the intake pipe, the engine starts. The throttle valve is opened to the required opening, the gas valve is opened to suck the air-fuel mixture into the engine cylinder, and when ignition is performed and the engine begins to rotate, the cranking is stopped and the gas engine is started by igniting. This configuration is characterized by the following.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明を図面に示す実施例を参照して詳細に説明
する。Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

矛１図に示すガス機関（１）内のクランク機構をセルモ
ータ（７１によって駆動し、機関（１）が無点火でのウ
ランキングな開始すると、このクランキング開始と同時
に制御盤（８）からの信号でガバナ（９）が作動してリ
ンケージＱｌを介し絞り弁（５）が完全に閉じる。The crank mechanism in the gas engine (1) shown in Figure 1 is driven by the starter motor (71), and when the engine (1) starts cranking without ignition, a signal from the control panel (8) is activated at the same time as this cranking starts. The signal activates the governor (9) and completely closes the throttle valve (5) via the linkage Ql.

このとき電磁開閉弁であるガス弁（３）はあらかじめ閉
じている。この状態でウランキングを続けると、機関筒
内のピストンによる自吸作用によって上記吸気管１６）
内の空気が排出される。At this time, the gas valve (3), which is an electromagnetic on-off valve, is closed in advance. If Uranking is continued in this state, the above-mentioned intake pipe 16) will be caused by the self-priming action of the piston in the engine cylinder.
The air inside is exhausted.

次に上記制御盤（８）からの信号によって上［ガバナ（
９）により上記絞９弁（５）を始動に必要な開度に開こ
のとき吸気管１６）内は空気抜きされているため、この
吸気管１６＋内で上記混合気が希薄になることがない。Next, a signal from the control panel (8) is sent to the upper [governor (
9) opens the throttle valve 9 (5) to the degree of opening necessary for starting, and since air is removed from the intake pipe 16), the air-fuel mixture does not become lean in the intake pipe 16+.

したがって機関筒内の混合器１４）に点火が行われ機関
が回転し始めるとき上記クランキングを停止して機関（
１）を点火始動したときに、逆火現象が生じない。Therefore, when the mixer 14) in the engine cylinder is ignited and the engine starts to rotate, the cranking is stopped and the engine (
1) No backfire phenomenon occurs when starting the ignition.

ｉ２図は１以上の手順を示す始動プログラムであり、実
線が本発明の場合であり、破線は従来の場合を示す。な
おこのプログラムの笑行は、上記制御盤（８）によるシ
ーケンス制御によって行う。Figure i2 is a startup program showing one or more procedures, where the solid line shows the case of the present invention and the broken line shows the conventional case. The execution of this program is performed by sequence control using the control panel (8).

〔発明の効果〕〔Effect of the invention〕

本発明によれば、空気とガスとの混合気を機関筒内に吸
込む前に絞り弁を完全に閉じてウランキングを行い、吸
気管内の空気を排出してからガス機関を点火始動するよ
うにしたから、吸気管内の空気の希薄化によって生ずる
逆火現象の発生を有効に防止でき、混合器等をいためる
おそれがない。According to the present invention, before the mixture of air and gas is sucked into the engine cylinder, the throttle valve is completely closed to carry out urking, and the air in the intake pipe is exhausted before the gas engine is ignited and started. Therefore, the flashback phenomenon caused by the dilution of the air in the intake pipe can be effectively prevented, and there is no risk of damaging the mixer or the like.

【図面の簡単な説明】[Brief explanation of drawings]

牙１図は火花点火式ガス機関の燃料供給システムを示す
説明図、牙２図はその機関の始動プログラムを示すタイ
ムチャートである。 （１）・・ガス機関、（２）・・空気清浄器、（３）・
・ガス弁、１４）・・混合器、（５）・Φ絞り弁、　１
６＋　−−吸気管。Figure 1 is an explanatory diagram showing a fuel supply system of a spark-ignition gas engine, and Figure 2 is a time chart showing a starting program for the engine. (1)...Gas engine, (2)...Air purifier, (3)...
・Gas valve, 14)・Mixer, (5)・φ throttle valve, 1
6+ --Intake pipe.

Claims (1)

【特許請求の範囲】[Claims] （１）空気清浄器を経て吸入された空気とガス弁を経て
供給された燃料ガスとを混合器で混合し絞り弁および吸
気管を順次経て機関筒内に供給するガス機関の始動にあ
たって、上記ガス弁を閉じるとともに上記絞り弁を完全
に閉じた状態でガス機関の無唐火でのウランキングを開
始し、上記吸気管内の空気を排出した後に、始動に必要
な開度に上記絞り弁を開き、上記ガス弁を開いて混合気
を機関筒内に吸込み、点火が行われて機関が回転し始め
るとき、上記ウランキングを停止してガス機関を点火始
動することを特徴とする火花点火式ガス機関の始動方法
。(1) When starting a gas engine, the air sucked through the air purifier and the fuel gas supplied through the gas valve are mixed in a mixer and supplied into the engine cylinder through the throttle valve and intake pipe in sequence. With the gas valve closed and the throttle valve completely closed, the gas engine is started to run without any heat, and after exhausting the air in the intake pipe, the throttle valve is opened to the degree necessary for starting. The spark ignition type is characterized in that when the gas valve is opened to suck the air-fuel mixture into the engine cylinder, and when ignition is performed and the engine begins to rotate, the spark ignition is stopped and the gas engine is started by igniting. How to start a gas engine.
JP58145591A 1983-08-09 1983-08-09 Starting of spark ignition type gas engine Granted JPS6036765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58145591A JPS6036765A (en) 1983-08-09 1983-08-09 Starting of spark ignition type gas engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58145591A JPS6036765A (en) 1983-08-09 1983-08-09 Starting of spark ignition type gas engine

Publications (2)

Publication Number Publication Date
JPS6036765A true JPS6036765A (en) 1985-02-25
JPH0247593B2 JPH0247593B2 (en) 1990-10-22

Family

ID=15388621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58145591A Granted JPS6036765A (en) 1983-08-09 1983-08-09 Starting of spark ignition type gas engine

Country Status (1)

Country Link
JP (1) JPS6036765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63124834A (en) * 1986-11-13 1988-05-28 Yamaha Motor Co Ltd Starting device for gas engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332175U (en) * 1976-08-25 1978-03-20
JPS58181967U (en) * 1982-05-31 1983-12-05 三洋電機株式会社 engine starting device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5332175U (en) * 1976-08-25 1978-03-20
JPS58181967U (en) * 1982-05-31 1983-12-05 三洋電機株式会社 engine starting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63124834A (en) * 1986-11-13 1988-05-28 Yamaha Motor Co Ltd Starting device for gas engine

Also Published As

Publication number Publication date
JPH0247593B2 (en) 1990-10-22

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