JPS6123856A - Liquefied-petroleum-gas engine - Google Patents

Liquefied-petroleum-gas engine

Info

Publication number
JPS6123856A
JPS6123856A JP14208084A JP14208084A JPS6123856A JP S6123856 A JPS6123856 A JP S6123856A JP 14208084 A JP14208084 A JP 14208084A JP 14208084 A JP14208084 A JP 14208084A JP S6123856 A JPS6123856 A JP S6123856A
Authority
JP
Japan
Prior art keywords
engine
lpg
regulator
pipe
negative pressure
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.)
Pending
Application number
JP14208084A
Other languages
Japanese (ja)
Inventor
Yoshiharu Kitagawa
北川　芳治
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.)
KADOKURA SHOTEN KK
Original Assignee
KADOKURA SHOTEN KK
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 KADOKURA SHOTEN KK filed Critical KADOKURA SHOTEN KK
Priority to JP14208084A priority Critical patent/JPS6123856A/en
Publication of JPS6123856A publication Critical patent/JPS6123856A/en
Pending 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
    • 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
    • F02D19/022—Control of components of the fuel supply system to adjust the fuel pressure, temperature or composition
    • 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
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0209—Hydrocarbon fuels, e.g. methane or acetylene
    • F02M21/0212—Hydrocarbon fuels, e.g. methane or acetylene comprising at least 3 C-Atoms, e.g. liquefied petroleum gas [LPG], propane or butane
    • 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
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0239—Pressure or flow regulators therefor
    • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE:To make a starting characteristic ever so better, by forcedly opening a valve, which opens in time of generation of suction negative pressure out of a gas pressure regulator in an LPG engine, with the pressure produced by driving a compressor in time of engine starting. CONSTITUTION:An air-fuel mixture is taken in an LPG engine 1 through an air cleaner 9, a suction pipe 3, an LPG mixer 7, a throttle body 5 and a suction manifold 4. Gas is fed to the mixer 7 from a gas tank via a gas pressure regulator 14 and a pipe 15, while the regulator 14 is provided with a vacuum lock valve to be opened by negative pressure out of a pipe 18 feeding the negative pressure of the suction manifold 4. A compressor 19 to be driven together with a starter in time of engine starting and its pipe line 20 are installed in parallel with the pipe 18, and even when sufficient negative pressure is not generated out of the suction manifold 4 and a vacuum lock is not released, the vacuum lock is forcedly released owing to pressure air out of the compressor.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は始動が容易にできるようにしたＬＰＧエンジン
に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an LPG engine that can be started easily.

「従来技術」 従来、ＬＰＧエンジンは吸気マニホルドとレギュレータ
をバキュムホースで接続し、エンジン本体に発生する負
圧でレギュレータのバキュームロックを解除してＬＰＧ
燃料が流れるように構成されているが、エンジン始動時
はエンジン本体に発生する負圧が弱くレギュレータのバ
キュームロックを完全に解除することが困難である。こ
のため、ＬＰＧ燃料が流れにくくなりエンシジンの始動
が困難であるという欠点があった。また、エンジンがか
からないため、セルモーターを長く使用してバッテリー
があがり自刃始動不能になるという欠点があった。``Prior art'' Conventionally, LPG engines connect the intake manifold and regulator with a vacuum hose, and release the vacuum lock on the regulator using the negative pressure generated in the engine body to release LPG.
Although it is configured to allow fuel to flow, when the engine starts, the negative pressure generated in the engine body is weak, making it difficult to completely release the vacuum lock of the regulator. For this reason, there was a drawback that the LPG fuel did not flow easily and it was difficult to start the engine. Also, since the engine would not start, there was a drawback that if the starter motor was used for a long time, the battery would die and the blade would not be able to start.

「本発明が解決しようとする問題点」 本発明は以上のような従来の欠点に鑑み、エンジンの始
動を容易にできるＬＰＧエンジンを得るにある。"Problems to be Solved by the Present Invention" In view of the above-mentioned conventional drawbacks, the present invention aims to provide an LPG engine that can be easily started.

「問題点を解決するための手段」 本発明はＬＰＧエンジンのエンジン始動を容易にできる
量の燃料を供給できるようにレギュレータを作動させる
ことのできる始動用ポンプを備えたことを特徴としてい
る。"Means for Solving the Problems" The present invention is characterized in that it includes a starting pump that can operate a regulator so as to supply an amount of fuel that can easily start the LPG engine.

「本発明の実施例」 以下図面に示す実施例により本発明の詳細な説明づる。“Embodiments of the present invention” The present invention will be explained in detail below with reference to embodiments shown in the drawings.

第１図ないし第３図の実施例において、１は車体２に取
付けられたエンジン本体である。３は前記エンジン本体
１に取付けられた吸気装置で、この吸気装置３は前記エ
ンジン本体１に接続された吸気マニホルド４と、この吸
気マニホルド４の上流側に接続された内部にアクセル操
作により開閉動作するスロットルバルブ（図示せず）が
取付けられたスロットルバルブ５と、このス、ロットル
バルブ５の上流側へ接続されたＬＰＧ燃料が供給される
接続部６が突出形成されたＬＰＧ燃料用混合器７と、こ
のＬＰＧ燃料用混合器７の上流側へフレキシブルパイプ
８を介して取付けられたエアークリナ−９とで構成され
ている。１０は前記ＬＰＧ燃料用混合器７に接続される
ＬＰＧ燃料供給装置で、このＬＰＧ燃料供給装＠１０は
液状のＬＰＧ燃料が収納されたＬＰＧ容器本体１１と、
このＬＰＧ容器本体１１にフィルタ１２と電磁弁１３と
を介して接続されたＬＰＧを気化するレギュレータ１４
と、このレギュレータ１４から前記ＬＰＧ１５料用混合
器用混合器部６へ接続される導管１５とから構成されて
いる。１６は前記レギュレータ１４を温めるための一方
が該レギュレータ１４に接続され他方が前記エンジン本
体１を介してラジェータ１７へ接続されるバイブである
。１８は一方が前記吸気マニホルド４に接続され他方が
前記レギュレｉり１４に接続された前記レギュレータ１
４のバキュームロックを解除するバキュームホースであ
る。１９は車体２等に取付けられた始動用ポンプで、こ
の始動用ポンプ１９は前記レギュレータ１４と、前記吸
気マニホルド４とを接続するバキュームホース２０の間
に介装されている。なお、該始動用ポンプ１９は始動時
にだけ駆動できるようにバッテリー２１にイグニッショ
ンスイッチ２２を介してセルモーター２３と並列に配線
されている。In the embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes an engine body attached to a vehicle body 2. In the embodiment shown in FIGS. Reference numeral 3 denotes an intake device attached to the engine body 1, and this intake device 3 has an intake manifold 4 connected to the engine body 1, and an interior connected to the upstream side of this intake manifold 4, which can be opened and closed by operating the accelerator. a throttle valve 5 to which a throttle valve (not shown) is attached; and an LPG fuel mixer 7 having a protruding connecting portion 6 connected to the upstream side of the throttle valve 5 and to which LPG fuel is supplied. and an air cleaner 9 attached to the upstream side of this LPG fuel mixer 7 via a flexible pipe 8. Reference numeral 10 denotes an LPG fuel supply device connected to the LPG fuel mixer 7, and this LPG fuel supply device @10 includes an LPG container main body 11 containing liquid LPG fuel,
A regulator 14 that vaporizes LPG is connected to this LPG container body 11 via a filter 12 and a solenoid valve 13.
and a conduit 15 connected from the regulator 14 to the mixer section 6 for the LPG 15 material mixer. Reference numeral 16 denotes a vibrator, one of which is connected to the regulator 14 and the other of which is connected to the radiator 17 via the engine body 1, for warming the regulator 14. 18 is the regulator 1 connected to the intake manifold 4 on one side and the regulator 14 on the other side;
This is a vacuum hose that releases the vacuum lock in step 4. Reference numeral 19 denotes a starting pump attached to the vehicle body 2 or the like, and this starting pump 19 is interposed between the regulator 14 and the vacuum hose 20 that connects the intake manifold 4. The starting pump 19 is connected to a battery 21 in parallel with a starter motor 23 via an ignition switch 22 so that it can be driven only during starting.

上記構成のＬＰＧエンジンにあっては、イグニッション
スイッチ２２をＯＮにすると、セルモーター２３と始動
用ポンプ１９が駆動する。この始動用ポンプ１９の駆動
により該始動用ポンプ１９に接続され　　　　　□たレ
ギュレータ１４のバキュームロックは解除される。この
ため、ＬＰＧ容器本体１１から送られるＬＰＧ燃料はフ
ィルタ１２、電磁弁１３、前記レギュレータ１４を通り
ＬＰＧ燃料用混合器７へと始動に必要な量が流れ込む。In the LPG engine having the above configuration, when the ignition switch 22 is turned on, the starter motor 23 and the starting pump 19 are driven. By driving the starting pump 19, the vacuum lock of the regulator 14 connected to the starting pump 19 is released. Therefore, the LPG fuel sent from the LPG container body 11 passes through the filter 12, the solenoid valve 13, and the regulator 14, and flows into the LPG fuel mixer 7 in an amount necessary for starting.

一方エアークリーナー９から清浄された空気はフレキシ
ブルパイプ８を通り前記ＬＰＧ燃料用混合器７へ流れ込
み、該ＬＰＧ燃料用混合器７内で１．ＰＧ燃料と合流混
合して混合気となり、さらに混合気はスロットルボディ
５、吸気マニホルド４を介してエンジン本体１内へ導か
れ、エンジンは始動される。エンジンが始動すると、セ
ルモーター２３はＯＦＦされるとともに前記始動用ポン
プ１９もＯＦＦされ前記レギュレータ１４への該始動用
ポンプ１９の駆動作用がストップしても従来のＬＰＧエ
ンジンと同様の動作で前記レギュレータ１４のバキュー
ムロックを前記吸気マニホルド４に接続されたバキュー
ムホース１８で解除保持してエンジンの駆動を行なう。On the other hand, the purified air from the air cleaner 9 flows into the LPG fuel mixer 7 through the flexible pipe 8, and within the LPG fuel mixer 7, 1. The mixture is mixed with the PG fuel to form an air-fuel mixture, which is further guided into the engine body 1 via the throttle body 5 and the intake manifold 4, and the engine is started. When the engine starts, the starter motor 23 is turned off and the starting pump 19 is also turned off. The engine is driven by releasing and holding the vacuum lock 14 with a vacuum hose 18 connected to the intake manifold 4.

なお、本実施例ではＬＰＧエンジンについて説明したが
、これに限らずガソリンエンジンに用いても良い。Although the present embodiment has been described with respect to an LPG engine, the present invention is not limited to this and may be used with a gasoline engine.

Ｅ本発明の効果」 以上の説明から明らかなように、本発明にあっては、次
に列挙する効果がある。E. Effects of the Present Invention As is clear from the above description, the present invention has the following effects.

（１）エンジン始動を容易にできる燃料を供給できるよ
うにレギュレータを作動させることのできる始動用ポン
プを備えているので、この始動用ポンプの駆動作動によ
り強制的にレギュレータのバキュームロックを解除する
ことができる。したがって、エンジン始動時でもＬＰＧ
燃料を運転中と同様にエンジン本体へ供給できエンジン
の始動が容易にできる。(1) Since it is equipped with a starting pump that can operate the regulator to supply fuel that makes it easy to start the engine, the vacuum lock of the regulator can be forcibly released by driving the starting pump. Can be done. Therefore, even when starting the engine, LPG
Fuel can be supplied to the engine body in the same way as during operation, making it easy to start the engine.

（，２）始動用ポンプを取付けるだけで良いので、既製
のエンジンに簡単に取付けることができる。(, 2) Since it is only necessary to attach a starting pump, it can be easily attached to an off-the-shelf engine.

（３）前記（２）により構造が簡単なので、安価にでき
る。(3) Since the structure is simple due to the above (2), it can be made inexpensive.

（４）エンジンの始動が容易にできるので、セルモータ
ーを長く使用しなくてもよくバッテリーがあがる心配が
ない。(4) Since the engine can be started easily, there is no need to use the starter motor for a long time and there is no need to worry about the battery dying.

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

第１図は本考案の実施例を示すエンジンルームの概略平
面図、第２図は始動用ポンプのブロック図、第３図は燃
料系統図を示す。 １・・・エンジン本体、　　２・・・車体、３・・・吸
気装置、　　　　４・・・吸気マニホルド、５・・・ス
ロットルボディ、６・・・接続部、７・・・ＬＰＧ燃料
用混合器、 ８・・・フレキシブルバルブ、 ９・・・エアークリーナー、 １０・・・ＬＰＧ燃料供給装置、 １１・・・ＬＰＧ容器本体、 １２・・・フィルタ、　　　　１３・・・電磁弁、１４
・・・レギュレータ　　　１５・・・導管、１６・・・
パイプ、　　　　　１７・・・ラジェータ、１８・・・
バキュームホース、 １９・・・始動用ポンプ、　　２０・・・バキュームホ
ース、２１・・・バッテリー、 ２２・・・イグニッションスイッチ、 ブ３・・・セルモーター。 第１図 第２図FIG. 1 is a schematic plan view of an engine room showing an embodiment of the present invention, FIG. 2 is a block diagram of a starting pump, and FIG. 3 is a fuel system diagram. DESCRIPTION OF SYMBOLS 1... Engine body, 2... Vehicle body, 3... Intake system, 4... Intake manifold, 5... Throttle body, 6... Connection part, 7... LPG fuel mixer , 8... Flexible valve, 9... Air cleaner, 10... LPG fuel supply device, 11... LPG container body, 12... Filter, 13... Solenoid valve, 14
... Regulator 15 ... Conduit, 16 ...
Pipe, 17...Radiator, 18...
Vacuum hose, 19...Starting pump, 20...Vacuum hose, 21...Battery, 22...Ignition switch, 3...Start motor. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 １）ＬＰＧ燃料を供給するレギュレータを備えたＬＰＧ
エンジンにおいて、該ＬＰＧエンジンのエンジン始動時
に確実に燃料を供給できるように前記レギュレータを作
動させることのできる始動用ポンプを備えたことを特徴
とするＬＰＧエンジン。 ２）始動用ポンプは始動時だけ駆動するようにセルモー
ターと並列に配線されていることを特徴とする特許請求
の範囲第１項記載のＬＰＧエンジン。[Claims] 1) LPG equipped with a regulator that supplies LPG fuel
An LPG engine, characterized in that the engine is equipped with a starting pump capable of operating the regulator so as to reliably supply fuel when starting the LPG engine. 2) The LPG engine according to claim 1, wherein the starting pump is wired in parallel with the starter motor so as to be driven only during starting.
JP14208084A 1984-07-09 1984-07-09 Liquefied-petroleum-gas engine Pending JPS6123856A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14208084A JPS6123856A (en) 1984-07-09 1984-07-09 Liquefied-petroleum-gas engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14208084A JPS6123856A (en) 1984-07-09 1984-07-09 Liquefied-petroleum-gas engine

Publications (1)

Publication Number Publication Date
JPS6123856A true JPS6123856A (en) 1986-02-01

Family

ID=15306968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14208084A Pending JPS6123856A (en) 1984-07-09 1984-07-09 Liquefied-petroleum-gas engine

Country Status (1)

Country Link
JP (1) JPS6123856A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197433U (en) * 1986-06-06 1987-12-15

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197433U (en) * 1986-06-06 1987-12-15
JPH0534256Y2 (en) * 1986-06-06 1993-08-31

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