JP4671188B2 - LPI engine fuel hose connection structure - Google Patents

LPI engine fuel hose connection structure Download PDF

Info

Publication number
JP4671188B2
JP4671188B2 JP2005243188A JP2005243188A JP4671188B2 JP 4671188 B2 JP4671188 B2 JP 4671188B2 JP 2005243188 A JP2005243188 A JP 2005243188A JP 2005243188 A JP2005243188 A JP 2005243188A JP 4671188 B2 JP4671188 B2 JP 4671188B2
Authority
JP
Japan
Prior art keywords
injector
fuel
fuel hose
supplied
hose
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.)
Expired - Fee Related
Application number
JP2005243188A
Other languages
Japanese (ja)
Other versions
JP2006063983A (en
Inventor
有 珍 徐
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.)
Hyundai Motor Co
Original Assignee
Hyundai Motor Co
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 Hyundai Motor Co filed Critical Hyundai Motor Co
Publication of JP2006063983A publication Critical patent/JP2006063983A/en
Application granted granted Critical
Publication of JP4671188B2 publication Critical patent/JP4671188B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F02M21/0236—Multi-way valves; Multiple valves forming a multi-way valve system
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0041—Means for damping pressure pulsations
    • 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
    • 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)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Description

本発明はＬＰＩエンジンの燃料ホース連結構造に係り、より詳しくは、ＬＰＩエンジンのインジェクタ間を連結する燃料ホースの連結構造に関するものである。   The present invention relates to a fuel hose connection structure for an LPI engine, and more particularly to a fuel hose connection structure for connecting injectors of an LPI engine.

一般に、ＬＰＩエンジンは、液状のＬＰＧを直接燃焼室に噴射する方式をとっている。このようなＬＰＧは、気化し易い特性のため、５〜１０ｂａｒの高圧状態で燃料ホースを介して送出される。
すなわち、ボンベからポンプが高圧で送出するＬＰＧはレギュレータにより常に５〜１０ｂａｒに維持され、それ以上の圧力となると、レギュレータがＬＰＧをボンベにリターンさせる。
このようなＬＰＩエンジンは、レギュレータで形成された圧力のＬＰＧが１番インジェクタ、２番インジェクタ、３番インジェクタ、４番インジェクタを順次経てレギュレータにリターンされるようになっており、エンジンの点火順序は１番インジェクタ、３番インジェクタ、４番インジェクタ、２番インジェクタの順である。
特開２００３−８３１７２号公報 In general, an LPI engine employs a system in which liquid LPG is directly injected into a combustion chamber. Such LPG is sent through the fuel hose in a high pressure state of 5 to 10 bar because of the property of being easily vaporized.
That is, LPG delivered from the cylinder at a high pressure by the pump is always maintained at 5 to 10 bar by the regulator, and when the pressure becomes higher than that, the regulator returns the LPG to the cylinder.
In such an LPI engine, the pressure LPG formed by the regulator is returned to the regulator through the first injector, the second injector, the third injector, and the fourth injector in sequence, and the ignition order of the engine is The order is the first injector, the third injector, the fourth injector, and the second injector.
JP 2003-83172 A

しかしながら、このような従来のＬＰＩエンジンにおいては、３番インジェクタのインジェクション時に発生する負圧で３番インジェクタに連結された両側の燃料ホースからＬＰＧが補充されることにより、３番インジェクタと４番インジェクタを連結する燃料ホース内の圧力燃料の流れが瞬間的に断絶し、４番インジェクタのインジェクション時に瞬間的にインジェクションが起こらない現象を発生させる。特に、エンジンが高速走行中で、レギュレータが圧力維持のためリターン側を開けてＬＰＧが循環中の場合は、前記現象がより顕著に現れる。   However, in such a conventional LPI engine, LPG is replenished from the fuel hoses on both sides connected to the No. 3 injector by the negative pressure generated when the No. 3 injector is injected, so that the No. 3 and No. 4 injectors are supplied. The flow of the pressure fuel in the fuel hose connecting the two instantaneously cuts off, causing a phenomenon in which no injection occurs instantaneously at the time of injection of the No. 4 injector. In particular, when the engine is running at high speed and the regulator opens the return side to maintain pressure and the LPG is circulating, the above phenomenon appears more remarkably.

また、４番インジェクタへの圧力燃料の流れを維持するため、ＬＰＧは既にインジェクションが終わった３番インジェクタを経て４番インジェクタに到達し、４番インジェクション時の反射波と衝突して燃料の脈動ノイズが発生し、この脈動ノイズは燃料ホースに沿ってダッシュまでに伝達される。
また、４番インジェクタの作動コイルに不要な電流が流れて熱が発生するだけでなく、エンジン制御ユニットが不要な時間にインジェクタ駆動信号を印加することにより、エンジン制御ユニットでも熱が発生する。 Also, in order to maintain the flow of pressure fuel to the No. 4 injector, the LPG reaches the No. 4 injector through the No. 3 injector that has already been injected, and collides with the reflected wave at the No. 4 injection and pulsates noise of the fuel. This pulsating noise is transmitted along the fuel hose to the dash.
Further, not only an unnecessary current flows through the operating coil of the No. 4 injector and heat is generated, but also the engine control unit generates heat by applying an injector drive signal at an unnecessary time.

本発明の目的は、ＬＰＩエンジンのインジェクタ間を連結する燃料ホースの連結構造を改善して、３番インジェクタと４番インジェクタを連結する燃料ホース内での圧力燃料流れが断絶しないようにし、燃料の脈動ノイズを減少させるだけでなく、エンジン制御ユニットおよびインジェクタ作動コイルの発熱を抑えて耐久性を向上させるＬＰＩエンジンの燃料ホース連結構造を提供することである。   The object of the present invention is to improve the fuel hose connection structure connecting the injectors of the LPI engine so that the pressure fuel flow in the fuel hose connecting the No. 3 injector and the No. 4 injector is not interrupted. An object of the present invention is to provide a fuel hose connection structure of an LPI engine that not only reduces pulsation noise but also suppresses heat generation of an engine control unit and an injector operating coil to improve durability.

上記課題を解決するために本発明は、多数のインジェクタが配置され、各々１回ずつ噴射して単位噴射サイクルを成すＬＰＩエンジンにおいて；前記単位噴射サイクルの間に初めて噴射する最初噴射インジェクタはレギュレータから直接に燃料を供給されるように燃料ホースで連結され；前記最初噴射インジェクタ以外の他のインジェクタは前記最初噴射インジェクタから燃料を供給され、インジェクタの噴射順とは逆に順次燃料を供給されるようにインジェクタの間を連結する多数の燃料ホースで連結されたことを特徴とする。   In order to solve the above problems, the present invention provides an LPI engine in which a large number of injectors are arranged, each of which is injected once to form a unit injection cycle; the first injection injector for the first injection during the unit injection cycle is a regulator. Connected by a fuel hose so as to be directly supplied with fuel; other injectors than the first injector are supplied with fuel from the initial injector, and are supplied with fuel sequentially in the reverse order of the injection of the injectors It is connected with many fuel hoses which connect between the injectors.

また、前記最初噴射インジェクタから燃料を供給される他のインジェクタの中で、最後に燃料を供給されるインジェクタは前記レギュレータに燃料をリターンさせるようにレギュレータとの間で燃料ホースで連結されたことを特徴とする。   Of the other injectors supplied with fuel from the first injector, the injector supplied with fuel lastly is connected to the regulator by a fuel hose so as to return the fuel to the regulator. Features.

前記燃料ホースは、前記レギュレータから前記最初噴射インジェクタに燃料を供給する第１燃料ホースと；前記最初噴射インジェクタから最後に噴射する最後噴射インジェクタに燃料を供給するように設置された第２燃料ホースと；
前記最後噴射インジェクタから前記最後インジェクタが噴射する直前に噴射する直前噴射インジェクタに燃料を供給するように設置された第３燃料ホースと；前記直前噴射インジェクタから前記最初噴射インジェクタが噴射した直後に噴射する直後噴射インジェクタに燃料を供給するように設置された第４燃料ホースと；前記直後噴射インジェクタから前記レギュレータに燃料をリターンさせる第５燃料ホースと；を含んで構成されたことを特徴とする。 The fuel hose includes a first fuel hose that supplies fuel from the regulator to the first injector; a second fuel hose that is installed to supply fuel to the last injector that is injected last from the first injector ;
A third fuel hose installed to supply fuel from the last injector to the immediately preceding injector that is injected immediately before the last injector injects; and immediately after the first injector is injected from the immediately preceding injector And a fourth fuel hose installed to supply fuel to the immediately following injector; and a fifth fuel hose for returning fuel from the immediately following injector to the regulator.

前記インジェクタは１番、２番、３番、４番の順に一列に配列され、１番、３番、４番、２番の順に燃料をインジェクションし、前記１番インジェクタは第１燃料ホースを介してレギュレータから燃料を供給され、前記２番インジェクタは第２燃料ホースを介して前記１番インジェクタから燃料を供給され、前記４番インジェクタは第３燃料ホースを介して前記２番インジェクタから燃料を供給され、前記３番インジェクタは第４燃料ホースを介して前記４番インジェクタから燃料を供給され、第５燃料ホースを介して前記レギュレータに燃料をリターンさせることを特徴とする。   The injectors are arranged in a line in the order of No. 1, No. 2, No. 3, No. 4, and fuel is injected in the order of No. 1, No. 3, No. 4, No. 2, and No. 1 injector passes through the first fuel hose. The fuel is supplied from the regulator, the No. 2 injector is supplied with fuel from the No. 1 injector via the second fuel hose, and the No. 4 injector is supplied with fuel from the No. 2 injector via the third fuel hose. The third injector is supplied with fuel from the fourth injector via a fourth fuel hose, and returns the fuel to the regulator via a fifth fuel hose.

本発明によると、ＬＰＩエンジンのインジェクタ間を連結する燃料ホースの連結構造を改善することで、３番インジェクタと４番インジェクタを連結する燃料ホース内での圧力燃料流れが断絶されないようにし、燃料の脈動ノイズを減少させるだけでなく、エンジン制御ユニットおよびインジェクタ作動コイルの発熱を抑えて耐久性を向上させる効果がある。   According to the present invention, by improving the connecting structure of the fuel hose connecting the injectors of the LPI engine, the pressure fuel flow in the fuel hose connecting the No. 3 injector and the No. 4 injector is prevented from being interrupted. In addition to reducing pulsation noise, there is an effect of improving durability by suppressing heat generation of the engine control unit and the injector operating coil.

以下、図１を参照して四つのインジェクタが一列に配列されたＬＰＩエンジンに本発明が適用された実施例を説明する。     Hereinafter, an embodiment in which the present invention is applied to an LPI engine in which four injectors are arranged in a row will be described with reference to FIG.

図１は本発明によるＬＰＩエンジンの燃料ホース連結構造を示す概略図である。
図１に示すように、ＬＰＩエンジンの燃料供給系統は、レギュレータ１０と、１番インジェクタ２０と、２番インジェクタ３０と、３番インジェクタ４０と、４番インジェクタ５０と、これら構成部を連結する燃料ホース６１、６２、６３、６４、６５とを含む。
レギュレータ１０は、ボンベからポンプで高圧で送出するＬＰＧを常に５〜１０ｂａｒに維持し、１番〜４番インジェクタ２０、３０、４０、５０は順次一列に配列され、エンジン制御ユニットの制御により、１番インジェクタ、３番インジェクタ、４番インジェクタ、２番インジェクタの順に燃料をインジェクションするようになっている。 FIG. 1 is a schematic view showing a fuel hose connection structure of an LPI engine according to the present invention.
As shown in FIG. 1, the fuel supply system of the LPI engine includes a regulator 10, a first injector 20, a second injector 30, a third injector 40, a fourth injector 50, and a fuel connecting these components. Hose 61, 62, 63, 64, 65.
The regulator 10 always maintains the LPG delivered from the cylinder at a high pressure with a pump at 5 to 10 bar, and the 1st to 4th injectors 20, 30, 40 and 50 are sequentially arranged in a line. Fuel is injected in the order of No. 3 injector, No. 3 injector, No. 4 injector, and No. 2 injector.

また、１番インジェクタ２０はレギュレータ１０から第１燃料ホース６１を介して燃料を受け、２番インジェクタ３０は１番インジェクタ２０から第２燃料ホース６２を介して燃料を受け、４番インジェクタ５０は２番インジェクタ３０から第３燃料ホース６３を介して燃料を受け、３番インジェクタ４０は４番インジェクタ５０から第４燃料ホース６４を介して燃料を受け、第５燃料ホース６５を介してレギュレータ１０に燃料をリターンさせるようになっている。   The first injector 20 receives fuel from the regulator 10 via the first fuel hose 61, the second injector 30 receives fuel from the first injector 20 via the second fuel hose 62, and the fourth injector 50 receives 2 The third injector 40 receives fuel from the third injector 30 through the third fuel hose 63, and the third injector 40 receives fuel from the fourth injector 50 through the fourth fuel hose 64, and fuels to the regulator 10 through the fifth fuel hose 65. Is supposed to be returned.

次に、このように構成される本発明によるＬＰＩエンジンの燃料ホース連結構造の作用および効果を詳細に説明する。
本発明においては、２番インジェクタ３０から３番インジェクタ４０に燃料ホースを連結せずに、２番インジェクタ３０から４番インジェクタ５０を経て３番インジェクタ４０にホースを連結することにより、レギュレータ１０で圧力調整された燃料が１番インジェクタ２０、２番インジェクタ３０、４番インジェクタ５０、３番インジェクタ４０を順次経てレギュレータ１０にリターンする。点火順序は、１番インジェクタ２０、３番インジェクタ４０、４番インジェクタ５０、２番インジェクタ３０の順である。 Next, the operation and effect of the fuel hose connection structure of the LPI engine according to the present invention configured as above will be described in detail.
In the present invention, without connecting the fuel hose from the 2nd injector 30 to the 3rd injector 40, the hose is connected to the 3rd injector 40 via the 2nd injector 30 through the 4th injector 50, so that the pressure is applied by the regulator 10. The adjusted fuel returns to the regulator 10 through the first injector 20, the second injector 30, the fourth injector 50, and the third injector 40 in order. The ignition order is the order of the first injector 20, the third injector 40, the fourth injector 50, and the second injector 30.

したがって、３番インジェクタ４０のインジェクション時に発生する負圧により、矢印で示すように、３番インジェクタ４０に連結された両側の燃料ホース６４、６５を介して燃料が補充されても、４番インジェクタ５０のインジェクション時に燃料ホース内の圧力燃料の流れが断絶せずに正常なインジェクションがなされるので、正確な噴射量で車両を精密に制御することができる。
また、１番インジェクタ２０と３番インジェクタ４０のインジェクション時に発生する燃料の脈動と４番インジェクタ５０のインジェクション時の反射波が合って脈動ノイズを引き起こすことを防止することができる。
また、燃料がインジェクションされない状態でインジェクタコイルに電流が流れる現象を減少させて、コイルの発熱量を減らし耐久性を向上させるだけでなく、エンジン制御ユニットからインジェクタに送る電気的信号の時間を減少させて、エンジン制御ユニットの発熱量を減らし耐久性を向上させることができる。 Therefore, even if the fuel is replenished through the fuel hoses 64 and 65 on both sides connected to the No. 3 injector 40 as shown by the arrow due to the negative pressure generated when the No. 3 injector 40 is injected, the No. 4 injector 50 Since the normal fuel injection is performed without interrupting the flow of the pressure fuel in the fuel hose during the injection, the vehicle can be precisely controlled with an accurate injection amount.
In addition, it is possible to prevent the pulsation noise caused by the pulsation of the fuel generated during the injection of the first injector 20 and the third injector 40 and the reflected wave during the injection of the fourth injector 50.
In addition to reducing the phenomenon of current flowing through the injector coil when fuel is not injected, reducing the amount of heat generated by the coil and improving durability, it also reduces the time of electrical signals sent from the engine control unit to the injector. Thus, the heat generation amount of the engine control unit can be reduced and the durability can be improved.

以上で、本発明に関する好ましい実施例を説明したが、本発明は前記実施例に限定されず、本発明の属する技術範囲を逸脱しない範囲での全ての変更が含まれる。   The preferred embodiments related to the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and includes all modifications within the scope of the technical scope to which the present invention belongs.

本発明によるＬＰＩエンジンの燃料ホース連結構造を示す図である。It is a figure which shows the fuel hose connection structure of the LPI engine by this invention.

符号の説明Explanation of symbols

１０ レギュレータ
２０、３０、４０、５０ インジェクタ
６１、６２、６３、６４、６５ 燃料ホース 10 Regulator 20, 30, 40, 50 Injector 61, 62, 63, 64, 65 Fuel hose

Claims (4)

多数のインジェクタが配置され、各々１回ずつ噴射して単位噴射サイクルを成すＬＰＩエンジンにおいて、
前記単位噴射サイクルの間に初めて噴射する最初噴射インジェクタはレギュレータから直接に燃料を供給されるように燃料ホースで連結され、
前記最初噴射インジェクタ以外の他のインジェクタは前記最初噴射インジェクタから燃料を供給され、インジェクタの噴射順とは逆に順次燃料を供給されるようにインジェクタの間を連結する多数の燃料ホースで連結されたことを特徴とするＬＰＩエンジンの燃料ホース連結構造。 In an LPI engine in which a large number of injectors are arranged and each of them is injected once to form a unit injection cycle ,
The first injection injector that injects for the first time during the unit injection cycle is connected by a fuel hose so that fuel is supplied directly from the regulator ,
Other injectors other than the first injector are connected by a number of fuel hoses that connect the injectors so that fuel is supplied from the initial injector and fuel is supplied sequentially in the reverse order of the injection of the injectors. A fuel hose connection structure of an LPI engine characterized by the above. 前記最初噴射インジェクタから燃料を供給される他のインジェクタの中で、最後に燃料を供給されるインジェクタは前記レギュレータに燃料をリターンさせるようにレギュレータとの間で燃料ホースで連結されたことを特徴とする請求項１に記載のＬＰＩエンジンの燃料ホース連結構造。   Among the other injectors supplied with fuel from the first injector, the last supplied injector is connected to the regulator by a fuel hose so as to return the fuel to the regulator. The fuel hose connection structure for an LPI engine according to claim 1. 前記燃料ホースは、
前記レギュレータから前記最初噴射インジェクタに燃料を供給する第１燃料ホースと、
前記最初噴射インジェクタから最後に噴射する最後噴射インジェクタに燃料を供給するように設置された第２燃料ホースと、
前記最後噴射インジェクタから前記最後インジェクタが噴射する直前に噴射する直前噴射インジェクタに燃料を供給するように設置された第３燃料ホースと、
前記直前噴射インジェクタから前記最初噴射インジェクタが噴射した直後に噴射する直後噴射インジェクタに燃料を供給するように設置された第４燃料ホースと、
前記直後噴射インジェクタから前記レギュレータに燃料をリターンさせる第５燃料ホースと、
を含んで構成されたことを特徴とする請求項２に記載のＬＰＩエンジンの燃料ホース連結構造。 The fuel hose is
A first fuel hose for supplying fuel from the regulator to the first injector ;
A second fuel hose installed to supply fuel from the first injector to the last injector to be injected last ;
A third fuel hose installed to supply fuel from the last injector to the immediately preceding injector that is injected immediately before the last injector injects ;
A fourth fuel hose installed to supply fuel to the immediately following injector that injects immediately after the first injector is injected from the immediately preceding injector ;
A fifth fuel hose that returns fuel from the injector immediately after injection to the regulator ;
The fuel hose connection structure for an LPI engine according to claim 2, comprising: 前記インジェクタは１番、２番、３番、４番の順に一列に配列され、１番、３番、４番、２番の順に燃料をインジェクションし、
前記１番インジェクタは第１燃料ホースを介してレギュレータから燃料を供給され、前記２番インジェクタは第２燃料ホースを介して前記１番インジェクタから燃料を供給され、前記４番インジェクタは第３燃料ホースを介して前記２番インジェクタから燃料を供給され、前記３番インジェクタは第４燃料ホースを介して前記４番インジェクタから燃料を供給され、第５燃料ホースを介して前記レギュレータに燃料をリターンさせることを特徴とする請求項２に記載のＬＰＩエンジンの燃料ホース連結構造。 The injectors are arranged in a line in the order of No. 1, No. 2, No. 3, No. 4, and inject fuel in the order of No. 1, No. 3, No. 4, No. 2,
The No. 1 injector is supplied with fuel from a regulator via a first fuel hose, the No. 2 injector is supplied with fuel from the No. 1 injector via a second fuel hose, and the No. 4 injector is supplied with a third fuel hose. The fuel is supplied from the No. 2 injector via the No. 4, the No. 3 injector is supplied with fuel from the No. 4 injector via the No. 4 fuel hose, and the fuel is returned to the regulator via the No. 5 fuel hose. The fuel hose connection structure for an LPI engine according to claim 2.
JP2005243188A 2004-08-25 2005-08-24 LPI engine fuel hose connection structure Expired - Fee Related JP4671188B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020040067071A KR100633895B1 (en) 2004-08-25 2004-08-25 Layout of fuel hose in a LPI engine

Publications (2)

Publication Number Publication Date
JP2006063983A JP2006063983A (en) 2006-03-09
JP4671188B2 true JP4671188B2 (en) 2011-04-13

Family

ID=36093048

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005243188A Expired - Fee Related JP4671188B2 (en) 2004-08-25 2005-08-24 LPI engine fuel hose connection structure

Country Status (3)

Country Link
JP (1) JP4671188B2 (en)
KR (1) KR100633895B1 (en)
CN (1) CN100543291C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6387993B2 (en) 2016-03-23 2018-09-12 トヨタ自動車株式会社 Fuel injection device for internal combustion engine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58136672U (en) * 1982-03-10 1983-09-14 自動車機器技術研究組合 fuel injector
JPS6088866A (en) * 1983-09-23 1985-05-18 ザ　ベンディクス　コ−ポレ−ション Fuel jet apparatus
JPS6287162U (en) * 1985-11-20 1987-06-03
JPS62237027A (en) * 1986-04-07 1987-10-17 Mazda Motor Corp Fuel feeding device for engine
JPH0476264A (en) * 1990-07-17 1992-03-11 Fuji Injiekuta Kk Injector housing
JPH0610787A (en) * 1992-06-26 1994-01-18 Toyota Motor Corp Dual fuel injection valve
KR20030080892A (en) * 2002-04-11 2003-10-17 씨멘스 오토모티브 주식회사 A lp gas purging system on the fuel rail

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1030521A (en) 1996-07-12 1998-02-03 Denso Corp Fuel injector
JP4214679B2 (en) 2000-12-26 2009-01-28 株式会社デンソー Fuel supply device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58136672U (en) * 1982-03-10 1983-09-14 自動車機器技術研究組合 fuel injector
JPS6088866A (en) * 1983-09-23 1985-05-18 ザ　ベンディクス　コ−ポレ−ション Fuel jet apparatus
JPS6287162U (en) * 1985-11-20 1987-06-03
JPS62237027A (en) * 1986-04-07 1987-10-17 Mazda Motor Corp Fuel feeding device for engine
JPH0476264A (en) * 1990-07-17 1992-03-11 Fuji Injiekuta Kk Injector housing
JPH0610787A (en) * 1992-06-26 1994-01-18 Toyota Motor Corp Dual fuel injection valve
KR20030080892A (en) * 2002-04-11 2003-10-17 씨멘스 오토모티브 주식회사 A lp gas purging system on the fuel rail

Also Published As

Publication number Publication date
CN1740549A (en) 2006-03-01
CN100543291C (en) 2009-09-23
KR100633895B1 (en) 2006-10-13
JP2006063983A (en) 2006-03-09
KR20060018601A (en) 2006-03-02

Similar Documents

Publication Publication Date Title
CN101737185B (en) Control apparatus for internal combustion engine
JP4466340B2 (en) Fuel supply device
JP3885888B2 (en) Common rail system
JP4547052B2 (en) Fuel supply system
JP2007285235A (en) Fuel supply device for diesel engine
NL2006542C2 (en) DIESEL ENGINE FOR LPG-DIESEL-MIXTURE.
JP4415987B2 (en) Internal combustion engine fuel supply device
JP2013231362A (en) Fuel pressure control device
JP2008298046A (en) Controller of internal combustion engine
JP4671188B2 (en) LPI engine fuel hose connection structure
JP2013092137A (en) Control device for internal combustion engine
US20130008411A1 (en) Coupling device
JP4974777B2 (en) Control device for internal combustion engine
CN104411952A (en) Control device for internal combustion engine
JP2011185228A (en) Arrangement structure of fuel feed system parts
JP2013060879A (en) Fuel supply device for internal combustion engine
JP2009191855A (en) Fuel injection system for internal combustion engine
JP2008057381A (en) Fuel injection device for v-type internal combustion engine
JP2006258024A (en) Control device of internal combustion engine
EP2857672A1 (en) Fuel injection equipment
JP4123969B2 (en) Fuel injection device for internal combustion engine
JP2011058462A (en) Fuel injection device
KR20140108581A (en) Device for injecting fuel into the combustion chamber of an internal combustion engine
CN103732901A (en) Fuel injection device for internal combustion engine
JP2001115916A (en) Diesel engine for dimethyl ether

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080818

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100810

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100812

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101109

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20101221

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110111

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140128

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees