JPH0617656B2 - Fuel supply device for alcohol blended fuel - Google Patents

Fuel supply device for alcohol blended fuel

Info

Publication number
JPH0617656B2
JPH0617656B2 JP59174015A JP17401584A JPH0617656B2 JP H0617656 B2 JPH0617656 B2 JP H0617656B2 JP 59174015 A JP59174015 A JP 59174015A JP 17401584 A JP17401584 A JP 17401584A JP H0617656 B2 JPH0617656 B2 JP H0617656B2
Authority
JP
Japan
Prior art keywords
fuel
alcohol
time
alcohol concentration
engine
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 - Lifetime
Application number
JP59174015A
Other languages
Japanese (ja)
Other versions
JPS6153429A (en
Inventor
之弘 塚崎
俊治 工藤
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP59174015A priority Critical patent/JPH0617656B2/en
Publication of JPS6153429A publication Critical patent/JPS6153429A/en
Publication of JPH0617656B2 publication Critical patent/JPH0617656B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/082—Premixed fuels, i.e. emulsions or blends
    • F02D19/085—Control based on the fuel type or composition
    • F02D19/087—Control based on the fuel type or composition with determination of densities, viscosities, composition, concentration or mixture ratios of 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0626—Measuring or estimating parameters related to the fuel supply system
    • F02D19/0628—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position
    • F02D19/0631—Determining the fuel pressure, temperature or flow, the fuel tank fill level or a valve position by estimation, i.e. without using direct measurements of a corresponding sensor
    • 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
    • F02D19/06—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/08—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 pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
    • F02D19/082—Premixed fuels, i.e. emulsions or blends
    • F02D19/084—Blends of gasoline and alcohols, e.g. E85
    • 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)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、アルコール混合燃料、特にメタノールやエタ
ノール等のアルコールとガソリンとを混合してなるアル
コール混合燃料を使用する内燃機関の燃料供給装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply device for an internal combustion engine using an alcohol mixed fuel, particularly an alcohol mixed fuel obtained by mixing alcohol such as methanol and ethanol and gasoline.

従来の技術 石油資源を節減するためにメタノールやエタノール等の
アルコールを５〜３０％の割合でガソリンに混合した混
合燃料を自動車用エンジンの燃料として使用することが
検討されている。そして、この種の混合燃料を使用した
場合における燃料供給量の制御に関し、種々の提案がな
されている。2. Description of the Related Art In order to save petroleum resources, it has been considered to use a mixed fuel obtained by mixing alcohol such as methanol and ethanol with gasoline at a ratio of 5 to 30% as a fuel for an automobile engine. Various proposals have been made regarding the control of the fuel supply amount when using this kind of mixed fuel.

例えば、特開昭56−141032号では、燃料中のアルコール
濃度が高くなると混合気が過濃となって出力が低下する
ことに着目し、アルコール濃度が設定値以上のときに高
負荷用燃料を増量するようにしている。また、特開昭56
−98540号では、アルコール混合燃料のアルコール割合
を検出し、その割合に応じて燃料量、点火時期、アイド
ル空気量、排気ガス還流量を制御することが提案されて
いる。また、実開昭57−167238号では、機関の冷間時は
ガソリン燃料を、暖機時はアルコール燃料をそれぞれ通
すように切替えることが提案され、更にまた特開昭56−
104131号では、アルコール燃料の濃度に応じて空燃比
（Ａ／Ｆ）をあらかじめプログラムしておき、機関の完
爆前は前記Ａ／Ｆを濃化方向又は稀薄化方向のどちらか
にシフトすることが提案されている。For example, in Japanese Unexamined Patent Publication No. 56-141032, attention is paid to the fact that when the alcohol concentration in the fuel becomes high, the air-fuel mixture becomes too rich and the output decreases. I try to increase the amount. In addition, JP-A-56
No. 98540 proposes to detect the alcohol ratio of an alcohol-mixed fuel and control the fuel amount, ignition timing, idle air amount, and exhaust gas recirculation amount according to the ratio. Further, Japanese Utility Model Laid-Open No. 57-167238 proposes switching between gasoline fuel when the engine is cold and alcohol fuel when the engine is warmed up.
In 104131, the air-fuel ratio (A / F) is programmed in advance according to the concentration of alcohol fuel, and the A / F is shifted to either the enrichment direction or the leaning direction before the complete explosion of the engine. Is proposed.

発明が解決しようとする問題点 エンジンの始動時あるいは暖機時において始動性や運転
性（ドライバビリティー）を確保するために燃料を増量
する手段を備えたエンジンにおいて、アルコール濃度が
約３０％以下と比較的低い割合でガソリンと混合され
た、使用するアルコール混合燃料のアルコール成分（濃
度）が増加すると燃料の揮発性が増大し、混合気が過濃
となり、エンジンの始動性、運転性が悪化すると共に排
気ガス中の有害成分が増加するという問題がある。本発
明は種々のアルコール濃度の燃料が使用されるであろう
という事実に鑑み、混合燃料中のアルコール濃度を検知
し、アルコール濃度に応じて燃料増量を補足することに
より始動時あるいは暖機時に混合気が過濃となるのを防
止することにある。Problems to be Solved by the Invention In an engine equipped with a means for increasing the amount of fuel to ensure startability and drivability at the time of engine startup or warm-up, the alcohol concentration is approximately 30% or less. When the alcohol component (concentration) of the alcohol-blended fuel used, which is mixed with gasoline in a relatively low ratio, increases, the volatility of the fuel increases, and the air-fuel mixture becomes rich, degrading engine startability and drivability. In addition, there is a problem that harmful components in the exhaust gas increase. In view of the fact that fuels of various alcohol concentrations will be used, the present invention detects the alcohol concentration in the mixed fuel and supplements the fuel increase according to the alcohol concentration to mix the fuel at the time of starting or warming up. It is to prevent over-concentration.

問題点を解決するための手段 本発明によれば、アルコール濃度が比較的低い割合でア
ルコールとガソリンとを混合してなるアルコール混合燃
料を使用する内燃機関において、燃料中のアルコール濃
度を検出するセンサと、エンジンの運転状態を検出する
センサと、エンジンの始動時及び／又は暖機時に燃料を
増量する手段とを含み、燃料のアルコール濃度が高くな
れば前記始動時及び／又は暖機時の燃料増量を減少させ
るようになしたアルコール混合燃料用燃料供給装置が提
供される。ここで、エンジンの「始動時」とは、点火ス
イッチがＯＮとなった時点より完爆した時点までをい
う。燃料供給装置が燃料噴射式のものである場合は、燃
料のアルコール濃度が高くなるにつれて始動時の燃料噴
射時間を短かくするので望ましい。また、燃料のアルコ
ール濃度が高くなるにつれ始動時の燃料増量比を減少す
ると共に完爆後の燃料増量持続時間を短かくするのが望
ましい。Means for Solving the Problems According to the present invention, in an internal combustion engine that uses an alcohol-blended fuel in which alcohol and gasoline are mixed at a relatively low alcohol concentration, a sensor that detects the alcohol concentration in the fuel And a sensor for detecting the operating state of the engine, and a means for increasing the amount of fuel at the time of starting and / or warming up the engine. If the alcohol concentration of the fuel becomes high, the fuel at the time of starting and / or warming up Provided is a fuel supply device for alcohol-blended fuel, which is adapted to reduce the increase in weight. Here, "at the time of starting" the engine means from the time when the ignition switch is turned on to the time when the complete explosion occurs. When the fuel supply device is of a fuel injection type, it is desirable to shorten the fuel injection time at the start as the alcohol concentration of the fuel increases. Further, it is desirable to decrease the fuel increase ratio at the time of starting and to shorten the fuel increase duration after the complete explosion as the alcohol concentration of the fuel increases.

実施例 以下、添付図面を参照し本発明の実施例につき詳細に説
明する。Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

第１図は本発明を適用する内燃機関の概略図であって、
図中、１は燃料タンクであり、その中にはメタノールや
エタノール等のアルコール濃度が比較的低い割合でアル
コールとガソリンとの混合物からなるアルコール混合燃
料２が充填されている。３はアルコールセンサであり、
アルコール混合燃料２のアルコール濃度、すなわち燃料
中のアルコール成分の重量割合を検出する。このような
アルコールセンサ３としては、燃料の電気伝導率の変化
を検出するもの（燃料のアルコール濃度が増加するのに
ともなって電気伝導度が増加する性質を利用したも
の）、あるいは微生物センサのように直接アルコールの
濃度変化を電流変化に変換するもの等の公知のアルコー
ルセンサを使用することができる。アルコールセンサ３
の信号はマイクロコンピュータ（CPU）７に入力され
る。FIG. 1 is a schematic diagram of an internal combustion engine to which the present invention is applied,
In the figure, reference numeral 1 is a fuel tank, in which an alcohol mixed fuel 2 made of a mixture of alcohol and gasoline is filled at a relatively low alcohol concentration such as methanol or ethanol. 3 is an alcohol sensor,
The alcohol concentration of the alcohol-mixed fuel 2, that is, the weight ratio of the alcohol component in the fuel is detected. Such an alcohol sensor 3 may be one that detects a change in the electrical conductivity of the fuel (a sensor that utilizes the property that the electrical conductivity increases as the alcohol concentration of the fuel increases), or a microbial sensor. A known alcohol sensor such as one that directly converts a change in alcohol concentration into a change in current can be used. Alcohol sensor 3
Signal is input to the microcomputer (CPU) 7.

燃料タンク１内の燃料２は燃料ポンプ４により燃料フィ
ルタ５を介して燃料噴射弁１１へ供給されると共に圧力
レギュレータ６により圧力が制御されて余剰の燃料が燃
料タンク１へ戻される。一方、燃料噴射弁１１はCPU7か
らの信号に基づき燃料噴射時間（開弁時間）が決定さ
れ、所要量の燃料を内燃機関１３へ供給する。The fuel 2 in the fuel tank 1 is supplied to the fuel injection valve 11 via the fuel filter 5 by the fuel pump 4 and the pressure is controlled by the pressure regulator 6 to return the surplus fuel to the fuel tank 1. On the other hand, the fuel injection valve 11 determines a fuel injection time (valve opening time) based on a signal from the CPU 7, and supplies a required amount of fuel to the internal combustion engine 13.

内燃機関の点火系は、イグニッションコイル（イグナイ
タ）８、ディストリビュータ９、および点火プラグ１０
から成り、CPU7からの信号に基づき点火プラグ１０の点
火時期が制御される。また、内燃機関１３には、冷却水
の温度を検出する水温センサ１２が設けられ、この水温
センサ１２の信号はCPU7に入力される。The ignition system of an internal combustion engine includes an ignition coil (igniter) 8, a distributor 9, and a spark plug 10.
The ignition timing of the spark plug 10 is controlled based on a signal from the CPU 7. Further, the internal combustion engine 13 is provided with a water temperature sensor 12 that detects the temperature of the cooling water, and the signal of the water temperature sensor 12 is input to the CPU 7.

第２図はCPU7による始動時の燃料供給量の制御特性の一
実施例を示すものであり、始動時の冷却水温度に対する
噴射時間を示す。第２図の実施例では、内燃機関の始動
時、すなわち点火スイッチ（図示せず）をＯＮとしイグ
ニッションコイル８が通電された時点から機関が完爆す
るまでの時点における燃料噴射弁１１の燃料噴射時間
（開弁時期）を示したものである。すなわち、内燃機関
の始動時において、アルコール濃度が零の時の、エンジ
ン冷却水温度に対する噴射時間を図の破線の如くあらか
じめプログラムしておく。そして、燃料中のアルコール
濃度が高くなればなるほど、図の実線で示すように噴射
時間を短かくする方向に、冷却水温度対噴射時間の曲線
をシフトさせるのである。逆に、燃料中のアルコールの
濃度が低くなればなるほど、冷却水温度対噴射時間の曲
線を図の破線のように噴射時間を長くする方向にシフト
する。なお、機関の完爆時点は機関の回転を検出するこ
とにより検出することができる。FIG. 2 shows an embodiment of the control characteristic of the fuel supply amount at the time of starting by the CPU 7, and shows the injection time with respect to the cooling water temperature at the time of starting. In the embodiment of FIG. 2, the fuel injection of the fuel injection valve 11 at the time of starting the internal combustion engine, that is, from the time when the ignition switch (not shown) is turned on to the time when the ignition coil 8 is energized to the time when the engine is completely detonated. It shows the time (valve opening time). That is, at the time of starting the internal combustion engine, the injection time with respect to the engine cooling water temperature when the alcohol concentration is zero is programmed in advance as indicated by the broken line in the figure. Then, as the alcohol concentration in the fuel becomes higher, the curve of cooling water temperature vs. injection time is shifted in the direction of shortening the injection time as shown by the solid line in the figure. On the contrary, as the alcohol concentration in the fuel becomes lower, the curve of the cooling water temperature versus the injection time is shifted in the direction of increasing the injection time as shown by the broken line in the figure. The time point of complete explosion of the engine can be detected by detecting the rotation of the engine.

第３図は始動時および機関完爆後の燃料供給量特性を示
すものであり、横軸は時間であり、T1は点火スイッチ
（図示せず）がＯＮとなりイグニッションコイル８が通
電された時点、T2は機関が完爆した時点である。縦軸は
燃料の増量比であり、定常時（所定空燃比で燃料増量さ
れていない状態）を「1.0」とする。アルコール濃度が
零のときの、始動時の燃料増量比および始動後（完爆
後）の増量持続時間を図の破線のようにプログラムして
おき、アルコール濃度が高くなればなるほど、図の実線
で示す方向へ、すなわち増量比および増量持続時間を減
少する方向にシフトする。逆にアルコール濃度が低くな
ればなるほど、図の破線の方向へ、すなわち増量比およ
び増量持続時間を増加する方向へシフトする。なお、T2
はスタータスイッチ（図示せず）がOFFとなる時点とし
てもよい。FIG. 3 shows the fuel supply amount characteristics at the time of starting and after the complete explosion of the engine, the horizontal axis is time, and T 1 is the time when the ignition switch (not shown) is turned on and the ignition coil 8 is energized. , T 2 is the point at which the engine has exploded. The vertical axis represents the fuel increase ratio, and is set to "1.0" in the steady state (the state where the fuel is not increased at the predetermined air-fuel ratio). When the alcohol concentration is zero, the fuel increase ratio at startup and the increase duration time after startup (after complete explosion) are programmed as shown by the broken line in the figure, and the higher the alcohol concentration, the solid line in the figure. Shift in the direction shown, ie in the direction of decreasing the weight increase ratio and the weight increase duration. On the contrary, the lower the alcohol concentration, the more the shift is made in the direction of the broken line in the figure, that is, in the direction of increasing the increasing ratio and the increasing duration. Note that T 2
May be the time when the starter switch (not shown) is turned off.

第４図は内燃機関の冷間時、すなわち暖機運転時の燃料
供給量特性を示すものであり、横軸は冷却水温度、縦軸
は燃料増量比である。燃料のアルコール濃度が零であっ
て、機関の冷間時（例えば、冷却水温度が70℃以下のと
き）の燃料増量比を図の破線のようにプログラムしてお
く。そして、アルコール濃度が高くなればなるほど、燃
料増量比を図の実線の方向へ、すなわち燃料増量比を減
少する方向へシフトする。逆にアルコール濃度が低くな
ればなるほど、図の破線の方向へ、すなわち燃料増量比
を増加する方向へシフトする。なお、第４図の特性と第
２図の特性とを組み合わせ、機関の始動後完爆前は第２
図のように制御し、完爆後暖機前は第４図の制御するこ
とが望ましい。FIG. 4 shows the fuel supply amount characteristics when the internal combustion engine is cold, that is, during warm-up operation. The horizontal axis is the cooling water temperature, and the vertical axis is the fuel increase ratio. When the alcohol concentration of the fuel is zero and the engine is cold (for example, when the cooling water temperature is 70 ° C. or lower), the fuel increase ratio is programmed as shown by the broken line in the figure. Then, as the alcohol concentration becomes higher, the fuel increase ratio is shifted in the direction of the solid line in the figure, that is, in the direction of decreasing the fuel increase ratio. On the contrary, the lower the alcohol concentration, the more the shift to the direction of the broken line in the figure, that is, the direction to increase the fuel increase ratio. It should be noted that the characteristics shown in FIG. 4 and the characteristics shown in FIG.
It is desirable to control as shown in the figure and to perform the control shown in FIG.

発明の効果 本発明によれば、アルコール混合燃料を使用する内燃機
関において、種々のアルコール濃度の燃料が使用された
場合においても、アルコール濃度に応じて始動時および
／又は暖機時の燃料供給が制御されるので、燃料中のア
ルコール濃度が高い場合においては燃料増量が減少され
る方向にシフトされるので、混合気が過濃となることは
なく、従って機関の始動性、運転性が良好となり、排気
ガス中の有害成分を減少する効果がある。EFFECTS OF THE INVENTION According to the present invention, in an internal combustion engine that uses an alcohol-blended fuel, even when fuels having various alcohol concentrations are used, fuel supply at the time of starting and / or warming up can be performed according to the alcohol concentration. Since it is controlled, when the alcohol concentration in the fuel is high, the amount of fuel increase is shifted in the direction of decreasing it, so the air-fuel mixture does not become rich, so the engine startability and drivability are improved. , Effective in reducing harmful components in exhaust gas.

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

第１図は本発明を適用する内燃機関の概略図、第２図〜
第４図は本発明による燃料供給量の制御方式を示すグラ
フである。 １…燃料タンク、２……アルコール混合燃料、 ３…アルコールセンサ、 ７…マイクロコンピュータ（CPU） １１…燃料噴射弁、１２…水温センサ、 １３…内燃機関本体。FIG. 1 is a schematic view of an internal combustion engine to which the present invention is applied, and FIGS.
FIG. 4 is a graph showing a fuel supply amount control method according to the present invention. DESCRIPTION OF SYMBOLS 1 ... Fuel tank, 2 ... Alcohol mixed fuel, 3 ... Alcohol sensor, 7 ... Microcomputer (CPU) 11 ... Fuel injection valve, 12 ... Water temperature sensor, 13 ... Internal combustion engine main body.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】アルコール濃度が比較的低い割合でアルコ
ールとガソリンとを混合してなるアルコール混合燃料を
使用する内燃機関において、燃料中のアルコール濃度を
検出するセンサと、エンジンの運転状態を検出するセン
サと、エンジンの始動時及び／又は暖機時に燃料を増量
する手段とを含み、燃料のアルコール濃度が高くなれば
前記始動時及び／又は暖機時の燃料増量を減少させるよ
うになしたアルコール混合燃料用燃料供給装置。1. An internal combustion engine which uses an alcohol-blended fuel in which alcohol and gasoline are mixed at a relatively low alcohol concentration, and a sensor for detecting the alcohol concentration in the fuel and an operating state of the engine. An alcohol including a sensor and a means for increasing the amount of fuel at the time of starting and / or warming up the engine, and reducing the amount of fuel increase at the time of starting and / or warming up as the alcohol concentration of the fuel increases. Fuel supply device for mixed fuel. 【請求項２】燃料供給装置は燃料噴射機構を含み、燃料
のアルコール濃度が高くなるにつれ始動時の燃料噴射時
間を短かくする特許請求の範囲第１項記載の装置。2. The device according to claim 1, wherein the fuel supply device includes a fuel injection mechanism, and shortens the fuel injection time at the start as the alcohol concentration of the fuel increases. 【請求項３】燃料のアルコール濃度が高くなるにつれ始
動時の燃料増量比を減少すると共に完爆後の燃料増量持
続時間を短かくする特許請求の範囲第１項記載の装置。3. The apparatus according to claim 1, wherein as the alcohol concentration of the fuel increases, the fuel increase ratio at the time of starting is reduced and the fuel increase duration after the complete explosion is shortened.
JP59174015A 1984-08-23 1984-08-23 Fuel supply device for alcohol blended fuel Expired - Lifetime JPH0617656B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59174015A JPH0617656B2 (en) 1984-08-23 1984-08-23 Fuel supply device for alcohol blended fuel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59174015A JPH0617656B2 (en) 1984-08-23 1984-08-23 Fuel supply device for alcohol blended fuel

Publications (2)

Publication Number Publication Date
JPS6153429A JPS6153429A (en) 1986-03-17
JPH0617656B2 true JPH0617656B2 (en) 1994-03-09

Family

ID=15971145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59174015A Expired - Lifetime JPH0617656B2 (en) 1984-08-23 1984-08-23 Fuel supply device for alcohol blended fuel

Country Status (1)

Country Link
JP (1) JPH0617656B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03249342A (en) * 1990-02-28 1991-11-07 Mitsubishi Motors Corp Fuel feeder for mixed fuel engine
JP4664729B2 (en) * 2005-05-06 2011-04-06 有限会社モータウン Petroleum fuel / ethanol mixing adjustment system mounted on the driver
JP2007120414A (en) * 2005-10-28 2007-05-17 Toyota Motor Corp Internal combustion engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56146041A (en) * 1980-04-15 1981-11-13 Mazda Motor Corp Fuel supplying device for engine

Also Published As

Publication number Publication date
JPS6153429A (en) 1986-03-17

Similar Documents

Publication Publication Date Title
EP0828938B1 (en) Method and apparatus for clean cold starting of internal combustion engines
US5549083A (en) Method and apparatus for clean cold starting of internal combustion engines
JP2005155464A (en) Fuel injection device
RU94032159A (en) Method and device for metering fuel in fuel-and-air mixture in starting internal combustion engine
US20150252772A1 (en) Control device for internal combustion engine
JP2008002332A (en) Control device for internal combustion engine
JP2014234791A (en) Start control device for internal combustion engine
JP4270085B2 (en) Control device for internal combustion engine
JPH0617656B2 (en) Fuel supply device for alcohol blended fuel
KR100318128B1 (en) The Method of Controlling LPG(CNG) and Gasoline Bi-Fuel Engine with Dual Direct Ignition System and The Device Thereof
Hodgson et al. Improving the cold start performance of alcohol fueled engines using a rich combustor device
Davis et al. Ethanol vehicle cold start improvement when using a hydrogen supplemented E85 fuel
JPH03117650A (en) Starting device for engine
JPS61129428A (en) Fuel supply device of alcohol mixed fuel engine
JP3211542B2 (en) Fuel injection control device for internal combustion engine
JPH0799113B2 (en) Stratified combustion control system for engine
KR100401624B1 (en) Fuel amount compensation method on engine restarting
JP2915255B2 (en) Air-fuel ratio control device for gas engine
JP4296284B2 (en) Catalyst activation determination device for internal combustion engine
JP2874074B2 (en) Fuel pump driving method for internal combustion engine using blended fuel
JP2022119661A (en) Control device of internal combustion engine
JP2023147996A (en) Control device of internal combustion engine
JPH03260349A (en) Method for starting engine at low temperature
WO2012099587A1 (en) Fueling based on intake temperature
JPS61210269A (en) Cold starting method for engine