JPS58126456A - 2-cycle engine used liquefied petroleum gas as fuel - Google Patents

2-cycle engine used liquefied petroleum gas as fuel

Info

Publication number
JPS58126456A
JPS58126456A JP57008270A JP827082A JPS58126456A JP S58126456 A JPS58126456 A JP S58126456A JP 57008270 A JP57008270 A JP 57008270A JP 827082 A JP827082 A JP 827082A JP S58126456 A JPS58126456 A JP S58126456A
Authority
JP
Japan
Prior art keywords
fuel
petroleum gas
liquefied petroleum
engine
port
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
JP57008270A
Other languages
Japanese (ja)
Inventor
Yoji Hirai
平井　洋二
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP57008270A priority Critical patent/JPS58126456A/en
Publication of JPS58126456A publication Critical patent/JPS58126456A/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
    • 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
    • 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
    • F02M21/029—Arrangement on engines or vehicle bodies; Conversion to gaseous fuel supply systems
    • 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
    • F02M21/04—Gas-air mixing apparatus
    • F02M21/047—Venturi mixer
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • F02M21/04—Gas-air mixing apparatus
    • F02M21/042—Mixer comprising a plurality of bores or flow passages
    • 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

PURPOSE:To conveniently and easily supply fuel, by using liquefied petroleum gas (LPG) as the fuel of a 2-cycle engine. CONSTITUTION:A cylindrical pressurized vessel 2 sealed with liquefied petroleum gas (LPG) and lubricating oil is mounted to an engine main unit 1 by a spring 3 and receiving port 4. This port 4 is connected to a pressure regulator 5, opening and closing valve 6 and mixer 7. The LPG contained with the lubricating oil in the vessel 2 outflows in the port 4 by inserting the point end of the vessel 2 into the port 4, and is reduced with the pressure by the regulator 5 then vaporized to flow into the mixer 7 via the valve 6. The LPG in the mixer 7 is mixed with intake air from the side of an air cleaner 8 and sucked into an engine.

Description

【発明の詳細な説明】 本発明は２サイクルエンジンに関する。[Detailed description of the invention] The present invention relates to a two-stroke engine.

小型２サイクルガソリンエンジンは構造が簡単。A small two-stroke gasoline engine has a simple structure.

軽量、安価、取扱い性容易等の特徴を生かし、携帯用作
業機（刈払機、動力散粉機等）の動力源として普及して
いるが、もう一つの動力源である電動モータと比較する
と欠点も多く電動モータに代って用途を拡大するだめの
未解決事項は多い。It is popular as a power source for portable working machines (brush cutters, power dusters, etc.) due to its characteristics of being lightweight, inexpensive, and easy to handle, but it also has drawbacks when compared to electric motors, which are another power source. There are many unresolved issues regarding how to expand the range of applications in place of electric motors.

電動モータと比較して２ザイクルガンリンエンクンの欠
点を列記すると。List the disadvantages of the 2-cycle motor compared to the electric motor.

（１）燃料を常に補給する必要がある。(1) It is necessary to constantly replenish fuel.

燃料は重力落下式またはポンプ汲上式で燃料タンクから
気化器へ供給する必要がある。Fuel must be supplied from the fuel tank to the carburetor either by gravity or by pumping.

（２）振動、騒音が高い。(2) High vibration and noise.

（３）排気ガス、冷却排風の熱風を排出する。(3) Discharge hot air from exhaust gas and cooling exhaust air.

（４）調速がむずかしい。(4) Speed regulation is difficult.

（５）　　信頼性に劣る。(5) Poor reliability.

使用中に故障の発生頻度の高いのは燃料系と電気系とい
えるが、電気系は無接点点火装置等の普及により故障率
が小さくなったが、残されたのは燃料系のトラブルであ
る。It can be said that the fuel system and electrical system have a high frequency of failures during use, but although the failure rate of the electrical system has decreased due to the spread of non-contact ignition devices, problems in the fuel system remain. .

ガンリンエンノンの欠点の一つである燃料系のトラブル
を列記すると。Listing the fuel system troubles, which are one of the drawbacks of Ganlin Ennon.

（１）燃料通路内でガンリンが気化することにより燃料
が流れなくなり（ぺ−・ξ口、り現象、エアロック現象
）、従って燃料系の雰囲気温度はガンリンの初留点以下
に保持する必要があること。(1) Fuel no longer flows due to vaporization of Ganrin in the fuel passage (Pe-ξmouth phenomenon, airlock phenomenon), therefore the atmospheric temperature of the fuel system must be maintained below the initial boiling point of Ganlin. Something.

（１１）　　ガソリンが変質すること。(11) The quality of gasoline changes.

６巾　燃料通路内でのコ゛ミ塞り。A blockage in the 6-width fuel passage.

（Ｖ）　　振動力が加わることにより燃料流量が変化す
ること。(V) The fuel flow rate changes due to the application of vibrational force.

（Ｖ）燃料タンクのエアベント、気化器のエアベントか
らの燃料漏れがあること。(V) There is fuel leakage from the fuel tank air vent or carburetor air vent.

Ｍ　　運転姿勢が変ることによシ燃料流量が変化するこ
と 等である。M: Fuel flow rate changes due to changes in driving position.

本発明の目的は上記の点に着目し、ガンリン等の液体燃
料に代シ常態で気体の液化石油ガスを燃料として使用す
る２サイクルエンジンを提供することであシ、その特徴
とするところは、液化石油ガスを封入してエンジン本体
に着脱可能に装着された圧力容器、同圧力容器よシの燃
料が流入する受はロ、同受は口よりの燃料全減圧して気
化させる調圧器、同調圧器よシ開閉弁を介して導入され
る燃料をエアクリーナよＱの空気と混合させてエンジン
へ供給する混合器を備えたことである。The object of the present invention is to focus on the above points and provide a two-stroke engine that normally uses gaseous liquefied petroleum gas as fuel instead of liquid fuel such as Ganlin, and is characterized by: A pressure vessel filled with liquefied petroleum gas and removably attached to the engine body, a receiver into which fuel flows from the pressure vessel, a pressure regulator and a synchronizer that completely reduce the pressure of the fuel at the mouth and vaporize it. The engine is equipped with a mixer that mixes the fuel introduced through the pressure vessel and the on-off valve with the air from the air cleaner Q and supplies the mixture to the engine.

この場合は、燃料の補給が手軽で容易になり。In this case, refueling becomes easy and convenient.

ガンリン等の液体燃料での前記した欠点（１）よりＱＩ
までの殆んどが解消できる。Due to the above-mentioned drawback (1) of liquid fuel such as Ganlin, QI
Most of the above can be resolved.

以下図面を参照して本発明による実施例につき説明する
。Embodiments of the present invention will be described below with reference to the drawings.

第１図は本発明による１実施例の小型２ザイクルエンジ
ンを示す断面図である。FIG. 1 is a sectional view showing a small two cycle engine according to an embodiment of the present invention.

図において、エンジン本体１に対して、液化石油ガスと
潤滑油を封入した円筒形の圧力容器２（以下ボンベと言
う〕がスデυング３及び受は口４、　Ｋより取付けられ
ている。受は口４から調圧器５、開閉弁６．混合器７へ
と接続されている。In the figure, a cylindrical pressure vessel 2 (hereinafter referred to as a cylinder) containing liquefied petroleum gas and lubricating oil is attached to an engine body 1 through a mounting ring 3 and a socket 4, K. The receiver is connected from the port 4 to a pressure regulator 5, an on-off valve 6, and a mixer 7.

上記構成の場合の作用について述べる。The operation in the case of the above configuration will be described.

ボンベ２の先端を受は口４に挿入することにより、ボン
ベ２内の潤滑油を含んだ液化石油ガスは受は口４内に流
出し、調圧器５で減圧され気化して、開閉弁６を経て混
合器７に入る。混合器７内ではエアクリーナ８側からの
吸入空気と混合されエンノンに吸入される。By inserting the tip of the cylinder 2 into the port 4, the liquefied petroleum gas containing lubricating oil in the cylinder 2 flows out into the port 4, is depressurized by the pressure regulator 5, and is vaporized, and then the on-off valve 6 and enters the mixer 7. In the mixer 7, the air is mixed with intake air from the air cleaner 8 side and is sucked into the ennon.

上述の場合には次の効果がある。The above case has the following effects.

（１）燃料の容器は図示のよう々形状の定寸法で。(1) The fuel container should be shaped and dimensioned as shown in the diagram.

カセット式の着脱容易なボンベを使用すれば、容器単体
の状態では密封され燃料を外部に漏らすことなく、取扱
い運搬上で便利であり、燃料補給が安全、確実、容易で
ある。By using a cassette type cylinder that is easy to attach and remove, the container itself is sealed and does not leak fuel to the outside, making it convenient to handle and transport, and refueling is safe, reliable, and easy.

（２）液体燃料の場合と異な９．エンジン全体の姿勢、
振動等により燃料の流量の変化がなく、安定した運転が
でき、−１だ燃料を外部に漏らすことがない。(2) 9. Different from the case of liquid fuel. Overall posture of the engine
There is no change in the fuel flow rate due to vibrations, etc., allowing stable operation, and -1 means there is no leakage of fuel to the outside.

なお、圧力容器内は燃料である液化石油ガスのみ封入し
２潤滑油は別に容器を設けてエンジンに供給する装置を
設けてもよい。Note that a device may be provided in which only liquefied petroleum gas as fuel is sealed in the pressure vessel, and a separate container is provided for lubricating oil to supply it to the engine.

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

第１図は本発明による１実施例の小型２サイクルエンノ
ンを示す断面図である。 １・・・エンジン本体、２・・・圧力容器、４・・・受
は口。 牙４　圀FIG. 1 is a sectional view showing a small two-cycle ennon according to one embodiment of the present invention. 1...Engine body, 2...Pressure vessel, 4...Socket port. Fang 4 country

Claims (1)

【特許請求の範囲】[Claims] １　液化石油ガスを封入してエンジン本体に着脱可能に
装着された圧力容器、同圧力容器よりの燃料が流入する
受はロ、同受は口よシの燃料を減圧して気化させる調圧
器、同調圧器より開閉弁を介して導入される燃料をエア
クリーナよりの空気と混合させてエンジンへ供給する混
合器を備えだことを特徴とする液化石油ガスを燃料とし
た２サイクルエンジン。1. A pressure vessel filled with liquefied petroleum gas and removably attached to the engine body, a receiver into which fuel flows from the pressure vessel, a pressure regulator that reduces the pressure of the fuel and vaporizes it, A two-stroke engine using liquefied petroleum gas as fuel, characterized in that it is equipped with a mixer that mixes fuel introduced from a pressure regulator through an on-off valve with air from an air cleaner and supplies the mixture to the engine.
JP57008270A 1982-01-23 1982-01-23 2-cycle engine used liquefied petroleum gas as fuel Pending JPS58126456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57008270A JPS58126456A (en) 1982-01-23 1982-01-23 2-cycle engine used liquefied petroleum gas as fuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57008270A JPS58126456A (en) 1982-01-23 1982-01-23 2-cycle engine used liquefied petroleum gas as fuel

Publications (1)

Publication Number Publication Date
JPS58126456A true JPS58126456A (en) 1983-07-27

Family

ID=11688468

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57008270A Pending JPS58126456A (en) 1982-01-23 1982-01-23 2-cycle engine used liquefied petroleum gas as fuel

Country Status (1)

Country Link
JP (1) JPS58126456A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200361A (en) * 1985-02-28 1986-09-04 Komatsu Zenoa Kk Fuel supply device of engine
JPS6220668A (en) * 1985-07-18 1987-01-29 Komatsu Zenoa Kk Evaporating and mixing apparatus for fuel for engine
JPS63173837A (en) * 1986-12-29 1988-07-18 ロバ−ト　スタンレイ　ウイルソン Two stroke internal combustion engine
EP0350795A2 (en) * 1988-07-09 1990-01-17 Yamaha Hatsudoki Kabushiki Kaisha Gas engine including fuel supply system
US5012781A (en) * 1988-07-11 1991-05-07 Yamaha Hatsudoki Kabushiki Kaisha Gas engine
US5542398A (en) * 1995-04-26 1996-08-06 Marcon; Robert V. LPG fuel tank, and fuel supply system, for engines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61200361A (en) * 1985-02-28 1986-09-04 Komatsu Zenoa Kk Fuel supply device of engine
JPH0415390B2 (en) * 1985-02-28 1992-03-17 Komatsu Zenoa Kk
JPS6220668A (en) * 1985-07-18 1987-01-29 Komatsu Zenoa Kk Evaporating and mixing apparatus for fuel for engine
JPH0457865B2 (en) * 1985-07-18 1992-09-14 Komatsu Zenoa Kk
JPS63173837A (en) * 1986-12-29 1988-07-18 ロバ−ト　スタンレイ　ウイルソン Two stroke internal combustion engine
EP0350795A2 (en) * 1988-07-09 1990-01-17 Yamaha Hatsudoki Kabushiki Kaisha Gas engine including fuel supply system
US5012781A (en) * 1988-07-11 1991-05-07 Yamaha Hatsudoki Kabushiki Kaisha Gas engine
US5542398A (en) * 1995-04-26 1996-08-06 Marcon; Robert V. LPG fuel tank, and fuel supply system, for engines

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