JPS5835258A - Fuel supply system for engine - Google Patents
Fuel supply system for engineInfo
- Publication number
- JPS5835258A JPS5835258A JP13380181A JP13380181A JPS5835258A JP S5835258 A JPS5835258 A JP S5835258A JP 13380181 A JP13380181 A JP 13380181A JP 13380181 A JP13380181 A JP 13380181A JP S5835258 A JPS5835258 A JP S5835258A
- Authority
- JP
- Japan
- Prior art keywords
- alcohol
- fuel
- preheater
- gasoline
- 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.)
- Pending
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
- F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
- F02M13/06—Arrangements of two or more separate carburettors; Carburettors using more than one fuel the carburettors using different fuels
Abstract
Description
【発明の詳細な説明】
本発明はエンジンの燃料供給装置、特に、アルコールと
ガソリンとを混合して成る混合燃料をエンジンに供給す
る燃料供給装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel supply system for an engine, and more particularly to a fuel supply system for supplying a mixed fuel made by mixing alcohol and gasoline to an engine.
従来、アルコールとガソリンを燃料として併用する工・
ンジンへの燃料供給装置としては、例えば特開昭５１−
７２８２５号公報に記載されているように、アルコール
はそのままでは燃焼エネルギーが小さいためこれを改質
する必要があることから、ガソリンをエンジーンに供給
するガソリン供給系統とは別に、メタノールを空気と所
定の空燃比で混合し、その混合気を分解反応させて得ら
れる水素を含む改質ガスをエンジンに供給するようにし
たアルコール改質ガス供給系統を設けて成る燃料供給装
置が知られている。Traditionally, alcohol and gasoline were used together as fuel.
For example, as a fuel supply device for the engine,
As stated in Publication No. 72825, since alcohol has low combustion energy as it is, it is necessary to reform it. 2. Description of the Related Art A fuel supply system is known that includes an alcohol reformed gas supply system that supplies to an engine a reformed gas containing hydrogen obtained by mixing the mixture at an air-fuel ratio and decomposing the mixture.
しかしながら、この装置ではガソリン供給系統とアルコ
ール供給系統がそれぞれ独立しているため、燃料ボンデ
、流量制御装置その他種′々の機器が２個づつ必要とな
り、燃料の流量制御をはじめとして種々の動作が複雑化
し、しかも、これらの機器やタンクを配設するスペース
を確保するのに多大の制約を受けるという問題があった
。However, in this system, the gasoline supply system and the alcohol supply system are independent, so two fuel cylinders, two flow control devices, and other various devices are required, and various operations including fuel flow control are required. There is a problem in that the system becomes complicated and there are severe restrictions in securing space for arranging these devices and tanks.
本発明はこのような問題を解決すべくなされたものであ
って、ガソリンとアルコールを混合して成るアルコール
ブレンドガソリンを燃料として使用することを可能にす
る燃料供給装置を提供することを目的とするものである
。The present invention was made to solve such problems, and an object of the present invention is to provide a fuel supply device that makes it possible to use alcohol blend gasoline, which is a mixture of gasoline and alcohol, as fuel. It is something.
本発明に係るエンジンの燃料供給装置は、アルコールと
ガソリンとから成る混合燃料を貯留する燃料タンクと燃
料改質器とを連通ずる燃料供給管に設けた予熱器と、該
予熱器をアルコールの沸点以上に加熱保持する加熱保持
手段と、前記予熱器（こよりガス化したアルコールを前
記燃料改質器を経てエンジンの吸気系に供給する改質燃
料供給系路と、＼前記予熱器内の液体ガソリンを吸気系
に供給するガソリン供給系路とを設けたことを特徴゛と
するものである。A fuel supply device for an engine according to the present invention includes a preheater installed in a fuel supply pipe that communicates a fuel reformer with a fuel tank storing a mixed fuel consisting of alcohol and gasoline; A heating holding means for holding the heat as described above; a reformed fuel supply line that supplies gasified alcohol from the preheater to the engine intake system via the fuel reformer; This is characterized by the provision of a gasoline supply line for supplying gasoline to the intake system.
すなわち、本発明は、ガソリンとアルコールを混合して
成る混合燃料を燃料として使用するに際し、燃料タンク
から供給される混合燃料を温度制御された予熱器で加熱
し、沸点の違いによりアルコールきガソリンを分離し、
分離したアルコールを改質器で改質してエンジンに供給
する一方、分離した液体ガソリンを常法によりエンジン
に供給するよう番こしたものである。That is, when using a mixed fuel made by mixing gasoline and alcohol as fuel, the present invention heats the mixed fuel supplied from a fuel tank with a temperature-controlled preheater, and uses the alcohol-containing gasoline due to the difference in boiling point. separate,
The separated alcohol is reformed in a reformer and supplied to the engine, while the separated liquid gasoline is supplied to the engine using a conventional method.
以乍、本発明の実施例を示す添付の図面を参照して説明
する。Reference will now be made to the accompanying drawings, in which embodiments of the invention are shown.
第１図に示す燃料供給装置は、ガソリンとアルコールを
所定の割合で混合した混合燃料を貯留する燃料タンク１
と、電気ヒータ２を備え混合燃料を加熱してガス状アル
コールと液体ガソリンとに分離する予熱器３と、排ガス
その他の熱源により加熱され、ガス状アルコールを触媒
の作用をこより水素と一酸化炭素からなるガスに改質す
る改質器４と、エンジン７とエアクリーナ８とを連通ず
る吸気管９に配設されたアルコール改質ガス供給装置５
およびガソリン供給装置６とから構成されている。The fuel supply device shown in FIG.
, a preheater 3 equipped with an electric heater 2 that heats the mixed fuel and separates it into gaseous alcohol and liquid gasoline, and a preheater 3 that heats the mixed fuel and separates it into gaseous alcohol and liquid gasoline, and a preheater 3 that is heated by exhaust gas and other heat sources and converts the gaseous alcohol into hydrogen and carbon monoxide through the action of a catalyst. a reformer 4 for reforming the gas into a gas consisting of; and an alcohol reformed gas supply device 5 disposed in an intake pipe 9 that communicates between the engine 7 and the air cleaner 8.
and a gasoline supply device 6.
予熱器３内の混合燃料を加熱すると共に一定温度に保持
する手段としての電気ヒータ２は、予熱器内に配設され
たサーモスタッ１−１０と直列接続して電源Ｅに接続さ
れ、自動車のイグニッションスイッチＳＷにより断続さ
れる。サーモスタット１０は、純アルコールの沸点（例
えば、純粋なメチルアルコールの場合、６４．１°Ｃ）
の近傍またはそれ以上の設定温度で開閉するものが使用
される。The electric heater 2, which serves as a means for heating the mixed fuel in the preheater 3 and maintaining it at a constant temperature, is connected in series with a thermostat 1-10 disposed in the preheater and connected to a power source E, and is connected to the ignition of the automobile. It is turned on and off by switch SW. The thermostat 10 is set to the boiling point of pure alcohol (for example, 64.1°C in the case of pure methyl alcohol).
A device that opens and closes at a set temperature near or above is used.
これはアルコールをガソリンと混合した場合、純粋なア
ルコールの沸点に比べ、沸点が若干低ｒするため、上記
設定温度は純粋なメチルアルコールの沸点より若干低い
６４°Ｃ以下でもよいが・アルコールの沸点以上の温度
（例えば、メチルアルコールブレンドガソリンの場合６
５℃）に設定スれば、混合燃料中のアルコールがほとん
ど留出し、ガソリンはほとんどそのまま液体として残留
するから上記設定温度はアルコールの沸点より若干高（
設定することが好ましい。This is because when alcohol is mixed with gasoline, the boiling point is slightly lower than that of pure alcohol, so the above set temperature may be 64°C or less, which is slightly lower than the boiling point of pure methyl alcohol.The boiling point of alcohol or higher (e.g. 6 for methyl alcohol blend gasoline)
If the temperature is set at 5℃), most of the alcohol in the mixed fuel will be distilled out, and most of the gasoline will remain as a liquid.
It is preferable to set
上記の様に構成された装置を用いて混合燃料を供給する
場合、タンク１から燃料ポンプ（図示せず）により送出
された混合燃料は、公知涼暖制御装置（図示せず）によ
り流量制御されて予熱器３に入り、そこでガス状アルコ
ニルと液体ガソリンとに分離され、予熱器３の下部がら
抜き出される液体ガソリンは配管１２を経てガソリン供
給装置（例えば、気化器）６により所定の空燃比で空気
と混合されてニシジンに供絆され、予熱器４の上部から
抜き出され゛るガス状アルコールは、Ｐｃ。When supplying mixed fuel using a device configured as described above, the mixed fuel delivered from tank 1 by a fuel pump (not shown) is flow-controlled by a known cooling/heating control device (not shown). The liquid gasoline enters the preheater 3, where it is separated into gaseous alconyl and liquid gasoline, and the liquid gasoline extracted from the lower part of the preheater 3 passes through a pipe 12 and is adjusted to a predetermined air-fuel ratio by a gasoline supply device (e.g., a vaporizer) 6. The gaseous alcohol that is mixed with air and fed to Nishijin and extracted from the upper part of the preheater 4 is Pc.
Ｐｄ、Ｎｉその吐公知の触媒を収容した改ｗ器４に供給
され、そこで水素および一酸化炭素がら成る改質ガスに
改質された後、配管１１を経て公知ミキサーなどのアル
コール改質ガス供給装置５によす所定の空燃比で空気と
混合されてエンジンに供給される。The discharge of Pd and Ni is supplied to the reformer 4 containing a known catalyst, where it is reformed into a reformed gas consisting of hydrogen and carbon monoxide, and then the alcohol reformed gas is supplied via a pipe 11 to a known mixer or the like. It is mixed with air at a predetermined air-fuel ratio by the device 5 and supplied to the engine.
従って、本発明によれば、タンクがら予熱器に至るまで
の学科供給系統は一系統にすることができるので、構造
や機器の制御動作を簡略化でき、また、アルコールが予
熱されガス状になって改質ａＭ Ｋ供給されるので、つ
まり改質３ｇにはガソリンを流通させないので改質器内
の触媒によるアルコールの分解効率が向トし、改質器を
小型化することができるなど優れた効果が得られる。Therefore, according to the present invention, since the supply system from the tank to the preheater can be integrated into one system, the structure and control operation of the equipment can be simplified, and the alcohol is preheated and turned into gas. Since the reformed aM K is supplied to the reformed aM K, in other words, no gasoline is distributed to the reformed 3g, so the efficiency of alcohol decomposition by the catalyst in the reformer is improved, and the reformer can be made smaller. Effects can be obtained.
なお、上記実施例においては、予熱器３内の混合燃料を
加熱保持する手段として、電気ヒータを採用しているが
、これは第２図に示すように、予熱器３内に加熱コイ／
Ｉ／１３を配設しｌ、その一端を三方弁１４を介してエ
ンジンの冷却水排出管（又は排気管）１５に接続する一
方、他端をラジェータへの冷却水帰還用閉管（又はマフ
ラーへの酎管〕１６に接続し、予熱器３内の温度を検出
する温度センサ１７からの信号により三方弁１４を制御
し、設定温度以下の場合は、冷却水又は排ガスをコイル
１３へ供給し、設定温度を超えた場合はバイパス１８か
ら配管１６へバイパスさせることもできる。In the above embodiment, an electric heater is used as a means for heating and maintaining the mixed fuel in the preheater 3, but as shown in FIG.
An I/13 is installed, one end of which is connected to the engine's cooling water discharge pipe (or exhaust pipe) 15 via a three-way valve 14, while the other end is connected to a closed pipe for cooling water return to the radiator (or to the muffler). The three-way valve 14 is controlled by a signal from the temperature sensor 17 which is connected to the preheater 3 and detects the temperature inside the preheater 3, and when the temperature is below the set temperature, cooling water or exhaust gas is supplied to the coil 13, If the temperature exceeds the set temperature, the temperature can be bypassed from the bypass 18 to the piping 16.
第１図は本発明に係るエンジンの燃料供給装置の一例を
示す説明図、第２図はその変形例を示す要部説明図であ
る。
１・・・燃料タンク、 ２・・・ヒータ、 ３・・
・予熱器、４・・・改質器、 ５・・・アルコール改質
ガス供給装置、６・・・ガソリン供給装置、 ７・・
・エンジン、１０・・・サーモスタット、 １３・・
・加熱コイル、１４・・・三方弁。FIG. 1 is an explanatory view showing an example of an engine fuel supply system according to the present invention, and FIG. 2 is an explanatory view of main parts showing a modification thereof. 1...Fuel tank, 2...Heater, 3...
・Preheater, 4... Reformer, 5... Alcohol reformed gas supply device, 6... Gasoline supply device, 7...
・Engine, 10... Thermostat, 13...
・Heating coil, 14...three-way valve.
Claims (1)
する燃料タンクと燃料改質器とを連通ずる燃料供給管に
設けた予熱器と、該予熱器をアルコールの沸点以上に加
熱保持する加熱保持手段と、前記予熱器ｌこよりガス化
したアルコールを前記燃料改質器を経てエンジンの吸気
系（こ供給すや改質燃料供給系路と、前記予熱器内の液
体ガソリンを吸気系に供給するガソリン供給系路とを設
けたこと５特ｒ：※４卜するエンジンの燃ギ・１（１（
給装置、。(1) A preheater installed in a fuel supply pipe that communicates a fuel tank storing a mixed fuel consisting of alcohol and gasoline with a fuel reformer, and a heating holding means for heating and holding the preheater above the boiling point of alcohol. and a reformed fuel supply system through which alcohol gasified from the preheater passes through the fuel reformer to the intake system of the engine; 5.Special feature: *4 Fuel supply for the engine 1 (1 (
Feeding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13380181A JPS5835258A (en) | 1981-08-25 | 1981-08-25 | Fuel supply system for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13380181A JPS5835258A (en) | 1981-08-25 | 1981-08-25 | Fuel supply system for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5835258A true JPS5835258A (en) | 1983-03-01 |
Family
ID=15113344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13380181A Pending JPS5835258A (en) | 1981-08-25 | 1981-08-25 | Fuel supply system for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835258A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01268852A (en) * | 1988-04-21 | 1989-10-26 | Sumitomo Metal Ind Ltd | Continuous hot dip coating device for metallic strip |
| JP2007231827A (en) * | 2006-03-01 | 2007-09-13 | Nissan Motor Co Ltd | Internal combustion engine |
| JP2007255226A (en) * | 2006-03-20 | 2007-10-04 | Nissan Motor Co Ltd | Fuel supply device |
| JP2008202497A (en) * | 2007-02-20 | 2008-09-04 | Toyota Motor Corp | Control device of internal combustion engine |
-
1981
- 1981-08-25 JP JP13380181A patent/JPS5835258A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01268852A (en) * | 1988-04-21 | 1989-10-26 | Sumitomo Metal Ind Ltd | Continuous hot dip coating device for metallic strip |
| JP2007231827A (en) * | 2006-03-01 | 2007-09-13 | Nissan Motor Co Ltd | Internal combustion engine |
| US7597068B2 (en) | 2006-03-01 | 2009-10-06 | Nissan Motor Co., Ltd. | Internal combustion engine with fuel reforming apparatus |
| JP2007255226A (en) * | 2006-03-20 | 2007-10-04 | Nissan Motor Co Ltd | Fuel supply device |
| JP2008202497A (en) * | 2007-02-20 | 2008-09-04 | Toyota Motor Corp | Control device of internal combustion engine |
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