JPS6127583B2 - - Google Patents
Info
- Publication number
- JPS6127583B2 JPS6127583B2 JP56213727A JP21372781A JPS6127583B2 JP S6127583 B2 JPS6127583 B2 JP S6127583B2 JP 56213727 A JP56213727 A JP 56213727A JP 21372781 A JP21372781 A JP 21372781A JP S6127583 B2 JPS6127583 B2 JP S6127583B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- intake system
- pressure
- fuel injection
- intake
- 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
Links
- 239000000446 fuel Substances 0.000 claims description 105
- 238000002347 injection Methods 0.000 claims description 46
- 239000007924 injection Substances 0.000 claims description 46
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000002828 fuel tank Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/16—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors
- F02M69/18—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air
- F02M69/20—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters, e.g. engine load, speed, temperature or quantity of air the device being a servo-motor, e.g. using engine intake air pressure or vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は高負荷時に補助吸気通路から過給を行
う部分過給方式のエンジンの燃料制御装置に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel control device for a partial supercharging engine that performs supercharging from an auxiliary intake passage during high loads.
従来、自動車等のエンジンにおいて、高負荷時
の出力の向上を図るため、主吸気系と補助吸気系
とを併設して、該補助吸気系に過給機を装備し、
エンジンの設定負荷以上では主吸気系からの新気
に加えて少なくとも圧縮行程で補助吸気系から過
給気を供給するようにした部分過給方式のエンジ
ンが知られている。従来のこの種エンジンの多く
は、過給機を備えた補助吸気系には正圧がかゝる
ため燃料系を装備しにくいという事情により、主
吸気系にのみ燃料系を装備して、補助吸気系から
は空気だけを供給するようにしていた。しかしこ
の場合、補助吸気系では過給機の摩擦熱および断
熱圧縮による温度上昇が生じるため、吸気温度が
異常に高くなり、これに起因してノツキング等の
異常燃焼を起こす虞れがあつた。 Conventionally, in order to improve the output during high loads in automobile engines, etc., a main intake system and an auxiliary intake system were installed together, and the auxiliary intake system was equipped with a supercharger.
Partially supercharging engines are known in which supercharging air is supplied from an auxiliary intake system at least during the compression stroke in addition to fresh air from the main intake system when the engine load exceeds a set load. Most conventional engines of this type have a fuel system installed only in the main intake system, and the auxiliary intake system is equipped with a fuel system because positive pressure is applied to the auxiliary intake system equipped with a supercharger. Only air was supplied from the intake system. However, in this case, a temperature increase occurs in the auxiliary intake system due to frictional heat of the supercharger and adiabatic compression, so the intake air temperature becomes abnormally high, which may cause abnormal combustion such as knocking.
このような問題の対策として、既出願の特願昭
56−117671号に、補助吸気系にも燃料噴射ノズル
を設け、過給時に該燃料噴射ノズルから噴射され
る燃料の気化潜熱により吸気温度の低下を図るよ
うにしたものが示されている。ところが、この構
造においては、単に燃料供給ポンプから主吸気系
と補助吸気系との各燃料噴射ノズルに燃料を分配
供給するようにしているにすぎないため、とくに
補助吸気系で適正に燃料噴射量を制御することが
難しいという問題があつた。すなわち、各燃料噴
射ノズルからの燃料噴射量は、制御回路によつて
与えられる噴射パルスのパルス巾によつて時間的
に制御されるが、この制御が正しく行われるに
は、燃料噴射ノズルに加わる燃圧と吸気通路内の
圧力との間に一定の圧力差が必要となる。しかる
に、上記補助吸気系には過給圧（正圧）が加わ
り、かつ、この過給圧は過給機駆動力が増すにつ
れて高くなるため、運転状態により上記圧力差が
変動して適正な燃料噴射量制御が行われ難く、と
くに、燃料噴射量が多く要求される高負荷時ほ
ど、却つて燃料噴射がさまたげられるという欠点
があつた。 As a countermeasure for such problems,
No. 56-117671 discloses a system in which a fuel injection nozzle is also provided in the auxiliary intake system, and the intake air temperature is lowered by the latent heat of vaporization of the fuel injected from the fuel injection nozzle during supercharging. However, in this structure, the fuel is simply distributed and supplied from the fuel supply pump to each fuel injection nozzle in the main intake system and the auxiliary intake system, so the amount of fuel injected is not properly adjusted, especially in the auxiliary intake system. The problem was that it was difficult to control. That is, the amount of fuel injected from each fuel injection nozzle is temporally controlled by the pulse width of the injection pulse given by the control circuit, but for this control to be performed correctly, the amount of fuel injected into the fuel injection nozzle must be A certain pressure difference is required between the fuel pressure and the pressure in the intake passage. However, supercharging pressure (positive pressure) is applied to the auxiliary intake system, and this supercharging pressure increases as the driving force of the supercharger increases, so the pressure difference changes depending on the operating condition and the fuel is not properly adjusted. The disadvantage is that it is difficult to control the injection amount, and fuel injection is actually hindered, especially at high loads where a large amount of fuel is required.
なお、このような２系統の吸気系にそれぞれ燃
料噴射ノズルをつける場合の燃料制御手段とし
て、燃料供給ポンプ等も２系統に分けて装備する
方法が考えられるが、これでは構造が複雑にな
り、コストが高くつくという欠点を有する。 In addition, as a fuel control means when attaching fuel injection nozzles to each of these two intake systems, it is possible to install a fuel supply pump etc. in two systems separately, but this would complicate the structure and It has the disadvantage of high cost.
本発明はこれらの事情に鑑み、主吸気系と補助
吸気系とにそれぞれ燃料噴射ノズルを設けて過給
時の吸気温度の上昇を防止し、かつ１個の燃料ポ
ンプから各燃料噴射ノズルに燃料を分配供給する
ようにして燃料供給系統の構造を簡単に保ちなが
ら、各燃料噴射ノズルからの燃料噴射量を適正に
制御することのできるエンジンの燃料制御装置を
提供するものである。 In view of these circumstances, the present invention prevents a rise in intake air temperature during supercharging by providing fuel injection nozzles in each of the main intake system and the auxiliary intake system, and supplies fuel from one fuel pump to each fuel injection nozzle. To provide a fuel control device for an engine that can appropriately control the amount of fuel injected from each fuel injection nozzle while keeping the structure of a fuel supply system simple by distributing and supplying fuel.
すなわち、本発明は、部分過給方式のエンジン
において、主吸気系と補助吸気系とにそれぞれ設
けた第１，第２各燃料噴射ノズルと、各燃料噴射
ノズルに第１，第２各分岐通路を介してそれぞれ
所定の比率で燃料を分配供給する１個の燃料供給
ポンプと、上記各分岐通路にそれぞれ独立して設
けられ、各燃料噴射ノズルの燃圧を各吸気系の吸
気圧力の増大に応じて増大させるように制御する
燃圧調整弁とを備えたものである。 That is, the present invention provides a partial supercharging type engine including first and second fuel injection nozzles provided in the main intake system and the auxiliary intake system, respectively, and first and second branch passages provided in each fuel injection nozzle. one fuel supply pump that distributes and supplies fuel at a predetermined ratio through each branch passage, and a fuel supply pump that is installed independently in each of the branch passages and controls the fuel pressure of each fuel injection nozzle according to the increase in intake pressure of each intake system. The fuel pressure regulating valve is controlled to increase the fuel pressure.
以下、本発明の実施例を図面によつて説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
図において、１はエンジンのシリンダ、２はピ
ストン、３はシリンダ１の上部に形成された燃焼
室である。該燃焼室３には、主吸気ポート４、補
助吸気ポート５および排気ポート６が開口し、こ
れら各ポート４，５，６にそれぞれ、主吸気弁
７、補助吸気弁８および排気弁９が装備されてい
る。 In the figure, 1 is a cylinder of an engine, 2 is a piston, and 3 is a combustion chamber formed in the upper part of the cylinder 1. A main intake port 4, an auxiliary intake port 5, and an exhaust port 6 are opened in the combustion chamber 3, and each of these ports 4, 5, and 6 is equipped with a main intake valve 7, an auxiliary intake valve 8, and an exhaust valve 9, respectively. has been done.
１１は主吸気通路、１２は補助吸気通路で、該
各吸気通路１１，１２は、吸気通路上流集合部１
３から分岐し、前記主吸気ポート４および補助吸
気ポート５にそれぞれ連通している。上記主吸気
通路１１にはスロツトルバルブ１４が配置され、
一方、補助吸気通路１２には、過給機１５が設け
られるとともに、負荷が設定値以上になつたとき
開く過給用バルブ１６が配置されている。また、
前記主吸気弁７はほゞ吸気行程の期間中開弁さ
れ、一方、補助吸気弁８は、吸気行程の終期ない
し圧縮行程の初期に開き、圧縮行程途中で閉じる
ようにしてある。こうしてエンジンの設定負荷以
上では主吸気系から新気に加えて少なくとも圧縮
行程において補助吸気系から過給気が供給される
ようにしている。また、前記吸気通路上流集合部
１３にはエアクリーナ１７およびエアフロメータ
１８が設けられ、該エアフロメータ１８による吸
気流量検出信号は燃料噴射量制御回路１９に送ら
れ、該制御回路１９において吸気流量に応じた燃
料噴射パルスが出力されるようにしている。 11 is a main intake passage, 12 is an auxiliary intake passage, and each intake passage 11, 12 is connected to the intake passage upstream collecting section 1.
3, and communicate with the main intake port 4 and the auxiliary intake port 5, respectively. A throttle valve 14 is arranged in the main intake passage 11,
On the other hand, the auxiliary intake passage 12 is provided with a supercharger 15 and a supercharging valve 16 that opens when the load exceeds a set value. Also,
The main intake valve 7 is opened during most of the intake stroke, while the auxiliary intake valve 8 is opened at the end of the intake stroke or at the beginning of the compression stroke, and closed during the compression stroke. In this way, when the set load of the engine is exceeded, supercharging air is supplied from the auxiliary intake system at least during the compression stroke in addition to fresh air from the main intake system. Further, an air cleaner 17 and an air flow meter 18 are provided in the intake passage upstream gathering portion 13, and an intake flow rate detection signal from the air flow meter 18 is sent to a fuel injection amount control circuit 19, and the control circuit 19 responds to the intake flow rate. A fuel injection pulse is output.
２１は主吸気通路１１に設けられた第１燃料噴
射ノズル、２２は補助吸気通路１２に設けられた
第２燃料噴射ノズルで、それぞれ前記制御回路１
９から出力される燃料噴射パルスによつて開かれ
る。この各燃料噴射ノズル２１，２２に、１個の
燃料供給ポンプ２５から第１および第２分岐通路
３１，３２を介して燃料が分配供給されるように
している。すなわち、燃料タンク２６に連通する
燃料供給通路３０に、燃料供給ポンプ２５および
フイルター２７，２８が設けられ、この部分から
エンジンの各シリンダに対して燃料通路が配管さ
れるとともに、各シリンダごとに第１，第２各分
岐通路３１，３２が配置されている。そして、こ
の分岐通路３１，３２が上記各燃料噴射ノズル２
１，２２に接続され、かつ、第１分岐通路３１に
は絞り部３３が設けられ、上記各燃料噴射ノズル
２１，２２に所定の比率で燃料が分配供給される
ようにしている。 21 is a first fuel injection nozzle provided in the main intake passage 11; 22 is a second fuel injection nozzle provided in the auxiliary intake passage 12;
It is opened by the fuel injection pulse output from 9. Fuel is distributed and supplied to each of the fuel injection nozzles 21 and 22 from one fuel supply pump 25 via first and second branch passages 31 and 32. That is, a fuel supply pump 25 and filters 27, 28 are provided in a fuel supply passage 30 that communicates with the fuel tank 26, and a fuel passage is piped from this part to each cylinder of the engine, and a fuel passage is provided for each cylinder. First and second branch passages 31 and 32 are arranged. The branch passages 31 and 32 are connected to each fuel injection nozzle 2.
1 and 22, and a throttle section 33 is provided in the first branch passage 31 so that fuel is distributed and supplied to each of the fuel injection nozzles 21 and 22 at a predetermined ratio.
さらに、上記各分岐通路３１，３２にはそれぞ
れ、各燃料噴射ノズル２１，２２への接続部分か
ら燃料タンク２６に通じる燃料リリーフ通路３
４，３５が設けられ、この各燃料リリーフ通路３
４，３５中にそれぞれ燃圧調整弁３６，３７が設
けられている。該各燃圧調整弁３６，３７は、例
えば図に示すように、燃圧と吸気圧との圧力差に
応じて変位するダイヤフラム式の弁体３６ａ，３
７ａを用いて形成される。すなわち、該弁体３６
ａ，３７ａの片側に、リリーフ通路下流側への連
通室３６ｂ，３７ｂおよび該連通室３６ｂ，３７
ｂに突入するリリーフ通路上流側部分の開口端を
配置し、この開口端を上記弁体３６ａ，３７ａに
て開閉可能にするとともに、弁３６ａ，３７ａの
他の側に、連通路３８，３９を介して各吸気通路
１１，１２に連通する吸気圧室３６ｃ，３７ｃを
形成し、該吸気圧室３６ｃ，３７ｃに調節ばね３
６ｄ，３７ｄを設けている。そして、上記弁体３
６ａ，３７ａが、その両側から受ける各燃料噴射
ノズル２１，２２の燃圧と各吸気通路１１，１２
の吸気圧とに応じ、吸気圧力が増加すればリリー
フ通路３４，３５を閉じて燃圧も増加させ、吸気
圧力が低減すればリリーフ通路３４，３５を開い
て燃圧も低減させるように作動し、これによつて
上記燃圧と吸気圧力との圧力差がほゞ一定に保た
れるようにしている。この圧力差は前記調節ばね
３６ｄ，３７ｄによつて予め設定される。 Furthermore, each of the branch passages 31 and 32 has a fuel relief passage 3 that communicates with the fuel tank 26 from a connecting portion to each of the fuel injection nozzles 21 and 22, respectively.
4 and 35 are provided, and each fuel relief passage 3
Fuel pressure regulating valves 36 and 37 are provided in the cylinders 4 and 35, respectively. Each of the fuel pressure regulating valves 36, 37 has a diaphragm type valve body 36a, 3 that is displaced according to the pressure difference between the fuel pressure and the intake pressure, for example, as shown in the figure.
7a. That is, the valve body 36
Communication chambers 36b, 37b to the downstream side of the relief passage and communication chambers 36b, 37 on one side of a, 37a.
The opening end of the upstream portion of the relief passage that enters into the valve b is arranged so that this opening end can be opened and closed by the valve bodies 36a and 37a, and the communication passages 38 and 39 are provided on the other side of the valves 36a and 37a. Intake pressure chambers 36c, 37c are formed which communicate with the intake passages 11, 12 through the intake pressure chambers 36c, 37c, and adjustment springs 3 are connected to the intake pressure chambers 36c, 37c.
6d and 37d are provided. Then, the valve body 3
6a, 37a represent the fuel pressure of each fuel injection nozzle 21, 22 received from both sides and each intake passage 11, 12.
According to the intake pressure of As a result, the pressure difference between the fuel pressure and the intake pressure is kept substantially constant. This pressure difference is preset by the adjustment springs 36d, 37d.
次に、この装置の作用を説明する。 Next, the operation of this device will be explained.
エンジンの燃焼室３への吸気は、設定負荷以下
では主吸気通路１１のみから行われるが、設定負
荷以上になつたときは、主吸気通路１１からの吸
気に加えて補助吸気通路１２から過給機１５によ
り与えられる圧力をもつて過給気が供給される。
この過給時には、第１，第２各燃料噴射ノズル２
１，２２の双方から各吸気通路１１，１２に燃料
が噴射され、補助吸気系においては燃料噴射の気
化潜熱により、過度に吸気温度が上昇することが
防止される。 When the load is below the set load, air is taken into the combustion chamber 3 of the engine only from the main intake passage 11, but when the load exceeds the set load, supercharging is carried out from the auxiliary intake passage 12 in addition to the intake from the main intake passage 11. Supercharging air is supplied with a pressure provided by the engine 15.
During this supercharging, each of the first and second fuel injection nozzles 2
Fuel is injected into the intake passages 11 and 12 from both of the intake passages 1 and 22, and in the auxiliary intake system, the latent heat of vaporization of the fuel injection prevents the intake air temperature from rising excessively.
この場合に、上記各燃料噴射ノズル２１，２２
には燃料供給ポンプ２５によつて所定の比率で燃
料が分配供給され、かつ、前記各燃圧調整弁３
６，３７により、各燃料噴射ノズル２１，２２に
加わる燃圧が、各吸気通路１１，１２内の吸気圧
力の増大に応じて増大されるように制御される。
これにより、とくに補助吸気系においては、エン
ジンの負荷等によつて変化する過給機１５の駆動
力により補助吸気通路１２内の圧力（過給圧）が
大きく変化しても、これに応じて燃圧が変化し、
燃圧と吸気圧力との圧力差がほゞ一定に保たれ
る。従つて、過給圧が高くなる高負荷時にも、上
記圧力差が適正に維持され、燃料噴射が妨げられ
ることなく、燃料噴射量が前記制御回路１９によ
つて与えられる噴射パルスに正しく対応して制御
されることとなる。また、主吸気系においても、
主吸気通路１１内の吸気圧力が変化すればこれに
応じて第１燃料噴射ノズル２１にかゝる燃圧が変
化し、しかも、補助吸気系の第２燃料噴射ノズル
２２にかゝる燃圧が変化してもこれに影響される
ことなく、燃圧と吸気圧との圧力差がほゞ一定に
保たれて正確な燃料噴射量の制御が行われること
となる。 In this case, each of the fuel injection nozzles 21, 22
Fuel is distributed and supplied at a predetermined ratio by a fuel supply pump 25 to each of the fuel pressure regulating valves 3.
6 and 37, the fuel pressure applied to each fuel injection nozzle 21 and 22 is controlled to be increased in accordance with the increase in the intake pressure in each intake passage 11 and 12.
As a result, especially in the auxiliary intake system, even if the pressure in the auxiliary intake passage 12 (supercharging pressure) changes greatly due to the driving force of the supercharger 15, which changes depending on the engine load, etc., the system will respond accordingly. Fuel pressure changes,
The pressure difference between the fuel pressure and the intake pressure is kept almost constant. Therefore, even under high load when the supercharging pressure increases, the pressure difference is properly maintained, fuel injection is not hindered, and the fuel injection amount correctly corresponds to the injection pulse given by the control circuit 19. It will be controlled by Also, in the main intake system,
When the intake pressure in the main intake passage 11 changes, the fuel pressure applied to the first fuel injection nozzle 21 changes accordingly, and furthermore, the fuel pressure applied to the second fuel injection nozzle 22 of the auxiliary intake system changes. However, the pressure difference between the fuel pressure and the intake pressure is kept substantially constant, and the fuel injection amount can be accurately controlled without being affected by this.
以上説明したように、本発明は、部分過給方式
のエンジンにおいて、主吸気系と補助吸気系とに
それぞれ設けた第１および第２の各燃料噴射ノズ
ルに、１個の燃料供給ポンプにより燃料を分配供
給するとともに、各燃料噴射ノズルのそれぞれに
対して配備された燃圧調整弁により、各燃料噴射
ノズルの燃圧を各吸気系の吸気圧力の増大に応じ
て増大させるように制御しているため、簡単な構
造によりながら、主吸気系と過給機を備えた補助
吸気系のいずれにおいても、各燃料噴射ノズルの
燃圧と吸気圧力との圧力差を適正に維持し得、各
吸気系への燃料噴射量を正しく制御することがで
きるものである。 As explained above, the present invention provides a partial supercharging type engine in which fuel is supplied to each of the first and second fuel injection nozzles provided in the main intake system and the auxiliary intake system, respectively, using a single fuel supply pump. At the same time, the fuel pressure adjustment valve provided for each fuel injection nozzle controls the fuel pressure of each fuel injection nozzle to increase in accordance with the increase in intake pressure of each intake system. Although the structure is simple, it is possible to maintain an appropriate pressure difference between the fuel pressure of each fuel injection nozzle and the intake pressure in both the main intake system and the auxiliary intake system equipped with a supercharger. The fuel injection amount can be controlled correctly.
図は本発明の実施例を示す概略図である。
１１……主吸気通路、１２……補助吸気通路、
１５……過給機、２１……第１燃料噴射ノズル、
２２……第２燃料噴射ノズル、２５……燃料供給
ポンプ、３１……第１分岐通路、３２……第２分
岐通路、３６，３７……燃圧調整弁。
The figure is a schematic diagram showing an embodiment of the invention. 11...Main intake passage, 12...Auxiliary intake passage,
15...supercharger, 21...first fuel injection nozzle,
22... Second fuel injection nozzle, 25... Fuel supply pump, 31... First branch passage, 32... Second branch passage, 36, 37... Fuel pressure adjustment valve.
Claims (1)
により構成し、上記補助吸気系に過給機を設け、
エンジンの設定負荷以上では主吸気系からの新気
に加えて少なくとも圧縮行程において上記補助吸
気系から過給気を供給するようにしたエンジンに
おいて、上記主吸気系と上記補助吸気系とにそれ
ぞれ設けた第１燃料噴射ノズルおよび第２燃料噴
射ノズルと、該第１および第２燃料噴射ノズルに
第１および第２分岐通路を介してそれぞれ所定の
比率で燃料を分配供給する１個の燃料供給ポンプ
と、上記第１および第２分岐通路にそれぞれ独立
して設けられ、上記第１および第２燃料噴射ノズ
ルの燃圧を各吸気系の吸気圧力の増大に応じて増
大させるように制御する燃圧調整弁とを備えたこ
とを特徴とするエンジンの燃料制御装置。1 The intake system of the engine is composed of a main intake system and an auxiliary intake system, and a supercharger is provided in the auxiliary intake system,
In an engine configured to supply supercharging air from the auxiliary intake system at least during the compression stroke in addition to fresh air from the main intake system when the load exceeds the set load of the engine, the main intake system and the auxiliary intake system each have a a first fuel injection nozzle and a second fuel injection nozzle, and one fuel supply pump that distributes and supplies fuel to the first and second fuel injection nozzles at a predetermined ratio through first and second branch passages, respectively. and a fuel pressure regulating valve that is independently provided in the first and second branch passages and controls the fuel pressure of the first and second fuel injection nozzles to increase in accordance with an increase in the intake pressure of each intake system. An engine fuel control device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56213727A JPS58110855A (en) | 1981-12-25 | 1981-12-25 | Fuel controlling apparatus for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56213727A JPS58110855A (en) | 1981-12-25 | 1981-12-25 | Fuel controlling apparatus for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58110855A JPS58110855A (en) | 1983-07-01 |
| JPS6127583B2 true JPS6127583B2 (en) | 1986-06-26 |
Family
ID=16643992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56213727A Granted JPS58110855A (en) | 1981-12-25 | 1981-12-25 | Fuel controlling apparatus for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58110855A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672562B2 (en) * | 1983-11-14 | 1994-09-14 | マツダ株式会社 | Engine fuel injector |
| JPH0658103B2 (en) * | 1984-11-12 | 1994-08-03 | マツダ株式会社 | Air intake system for fuel injection engine |
| JPS61171878A (en) * | 1985-01-28 | 1986-08-02 | Toyota Motor Corp | Fuel pressure regulating device for double suction valve engine |
| JPS61250381A (en) * | 1985-04-30 | 1986-11-07 | Nissan Motor Co Ltd | Intake device for internal combustion engine |
-
1981
- 1981-12-25 JP JP56213727A patent/JPS58110855A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58110855A (en) | 1983-07-01 |
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