JPH0476239A - Fuel injection system - Google Patents
Fuel injection systemInfo
- Publication number
- JPH0476239A JPH0476239A JP2191657A JP19165790A JPH0476239A JP H0476239 A JPH0476239 A JP H0476239A JP 2191657 A JP2191657 A JP 2191657A JP 19165790 A JP19165790 A JP 19165790A JP H0476239 A JPH0476239 A JP H0476239A
- Authority
- JP
- Japan
- Prior art keywords
- purge
- gas
- amount
- engine
- fuel injection
- 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
- 239000000446 fuel Substances 0.000 title claims abstract description 37
- 238000002347 injection Methods 0.000 title claims abstract description 23
- 239000007924 injection Substances 0.000 title claims abstract description 23
- 238000010926 purge Methods 0.000 claims abstract description 66
- 238000001179 sorption measurement Methods 0.000 claims abstract description 28
- 239000003463 adsorbent Substances 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 52
- 238000010586 diagram Methods 0.000 description 7
- 239000002828 fuel tank Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003795 desorption Methods 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、自動車等の燃料タンク内燃料の蒸発ガスを
吸着パージするための燃料蒸発ガスパージシステムを備
えた燃料噴射ソステムに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fuel injection system equipped with a fuel evaporative gas purge system for adsorbing and purging evaporative gas of fuel in a fuel tank of an automobile or the like.
従来から、自動車には例えば特開平１−２３７３４８号
公報に開示されているように燃料タンク内の燃料蒸発ガ
スが大気中に放出されないように蒸発ガス吸着装置が備
えられ、機関の作動に応じてガスの吸着パージを制御し
ている。Conventionally, automobiles have been equipped with an evaporative gas adsorption device to prevent evaporative fuel gas in the fuel tank from being released into the atmosphere, as disclosed in, for example, Japanese Unexamined Patent Publication No. 1-237348. Controls gas adsorption purge.
従来の燃料蒸発ガス吸着装置は以上のように構成されて
いるので、蒸発ガス量の計測がなくパージ時に機関に吸
入されるガス量は不明である。燃料噴射システムでは、
パージ時のパージガス量をテストによって得られた推定
値で補正するようにしているが、近年、環境浄化の要求
が厳しくなり、排出ガス規制は増々強められているため
、推定値での補正では正確性に欠けることになる。Since the conventional fuel evaporative gas adsorption device is configured as described above, there is no measurement of the amount of evaporative gas, and the amount of gas sucked into the engine during purging is unknown. In the fuel injection system,
The amount of purge gas during purging is corrected using an estimated value obtained from tests, but in recent years, demands for environmental purification have become stricter and exhaust gas regulations have been tightened, so correction using estimated values is not accurate. It will lack sex.
この発明は上記のようなｉＩ題を解決するためになされ
たもので、機関に吸入されるパージガス量を正確に計測
して燃料量を補正するようにした燃料噴射システムを得
ることを目的とする。This invention was made to solve the above-mentioned problem, and aims to provide a fuel injection system that accurately measures the amount of purge gas taken into the engine and corrects the amount of fuel. .
この発明に係る燃料噴射システムは、少なくとも吸入口
と排出口およびパーシロと蒸発ガスを吸着する吸着剤が
封入された室を有し、上記吸着剤の吸着ガス量を検出す
る検出手段を有する蒸発ガス吸着手段と、吸着ガスをパ
ージするパージ手段と、パージ時のパージ空気を検出す
るパージ空気検出手段と、機関の吸入する空気量を検出
する空気量検出手段と、機関に必要とする燃料を噴射す
る燃料噴射手段と、機関に設けられた各種センサの信号
を受け、機関に設けられた各種アクチュエータを作動さ
せるエンジン制御手段を備えた燃料噴射システムにおい
て、上記蒸発ガス吸着手段の吸着ガスパージ時にエンジ
ン制御手段によって吸着ガス量とパージ空気量とからパ
ージガス量を検出し、かつ、検出したパージガス量に応
動して機関の吸入空気量で決定される燃料噴射量を補正
することを特徴とする。The fuel injection system according to the present invention has at least an inlet, an outlet, a persillo, and a chamber filled with an adsorbent for adsorbing evaporated gas, and has a detection means for detecting the amount of gas adsorbed by the adsorbent. An adsorption means, a purge means for purging the adsorbed gas, a purge air detection means for detecting purge air during purging, an air amount detection means for detecting the amount of air taken into the engine, and an injection of fuel required for the engine. In a fuel injection system, the engine control means receives signals from various sensors installed in the engine and operates various actuators installed in the engine. The present invention is characterized in that the purge gas amount is detected from the adsorbed gas amount and the purge air amount by means, and the fuel injection amount determined by the intake air amount of the engine is corrected in response to the detected purge gas amount.
この発明における燃料噴射システムは、パージ時のパー
ジガス量を検出し、燃料噴射量をパージガス量に応動し
て補正するようにしたものである。The fuel injection system according to the present invention detects the amount of purge gas during purging and corrects the fuel injection amount in response to the amount of purge gas.
以下、この発明の一実施例を図について説明する。第１
図はこの発明による燃料噴射システムの構成図を示し、
図において、１は自動車などの機関、１１はこの機関１
のインテークマニホールド、１２は吸気量を調節するス
ロー／ ）ルバルプ、１３はインジェクタ、１４は外気
を導入するエアクリーナ、１５はマニホールド１１内の
圧力を検出する圧力センサである。一方、２は燃料タン
ク、３は燃料の蒸発ガス吸着装置、４は上記燃料タンク
２と蒸発ガス吸着装置３間の管路に設けたチエツクパル
プ、５はパージ量を制御するパージコントロールバルブ
、６はエンジンコントロールユニット、７は吸気温セン
サである。また、３２１は上記蒸発ガス吸着装置３の排
気口、３３１は同じく吸入口、３３２はパーシロ、３７
１は制御回路である。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure shows a configuration diagram of a fuel injection system according to the present invention,
In the figure, 1 is an engine such as a car, and 11 is this engine 1.
12 is a slow valve that adjusts the amount of intake air, 13 is an injector, 14 is an air cleaner that introduces outside air, and 15 is a pressure sensor that detects the pressure inside the manifold 11. On the other hand, 2 is a fuel tank, 3 is a fuel evaporative gas adsorption device, 4 is a check pulp installed in the pipe between the fuel tank 2 and the evaporative gas adsorption device 3, 5 is a purge control valve for controlling the amount of purge, 6 is an engine control unit, and 7 is an intake temperature sensor. Further, 321 is an exhaust port of the evaporative gas adsorption device 3, 331 is an inlet port, 332 is a persilo, and 37
1 is a control circuit.
第２回は上記蒸発ガス吸着装置３の詳しい構成図を示し
、図において、底部に大気への排出口３２１を有するケ
ース３２と、蒸発ガス吸入口３３１およびパーシロ３３
２を有するキャップ３３とで密封された室内に、下方に
複数の流通穴３４１を有する仕切ｖｉ３４と、上方に同
じく複数の流通穴３５１を有する仕切Ｆｉ３５が設けら
れ、両仕切板３４．３５によって上下方向に室Ａ、Ｂ。The second part shows a detailed configuration diagram of the evaporative gas adsorption device 3. In the figure, a case 32 having an exhaust port 321 to the atmosphere at the bottom, an evaporative gas inlet 331, and a persillo 33 are shown.
2, a partition vi34 having a plurality of circulation holes 341 on the lower side and a partition Fi35 having a plurality of circulation holes 351 on the upper side are provided in the chamber sealed with a cap 33 having two partitions. Rooms A and B in the direction.
Ｃ，Ｄが形成されている。室Ａは吸入口３３１に連通し
、室Ｂはパーシロ３３２に連通し、室りは排出口３２１
に連通し、そして、室Ｃは流通穴３４１．３５１によっ
て室Ａ、Ｂ、Ｄにそれぞれ連通している。C and D are formed. Chamber A communicates with the suction port 331, chamber B communicates with the Persillo 332, and the chamber communicates with the discharge port 321.
and chamber C communicates with chambers A, B, and D through communication holes 341 and 351, respectively.
また、室Ｃ内には仕切板３４に形成した保持部３４２．
３４３に対向的に電極３４４．３４５が設置され、さら
に室Ｃ内に活性炭からなる吸着剤３６が導杆に封入され
ている。吸気温センサ７は排気口３２１に設けられてい
る。電極３４４３４５は＋Ｊ−１’ｍ３４６，３４７を
介シテケース３２外に設けた制御回路３７１と接続され
ている。Further, in the chamber C, there is a holding portion 342 formed on the partition plate 34.
Electrodes 344 and 345 are installed opposite to the electrodes 343, and an adsorbent 36 made of activated carbon is sealed in the rod in the chamber C. The intake temperature sensor 7 is provided at the exhaust port 321. The electrode 344345 is connected to a control circuit 371 provided outside the case 32 through +J-1'm 346 and 347.
３７は制御回路３７１を収容したパッケージで、３７２
はリード線３４６，３４７の引き出しのためのグロメッ
ト、３７３は外部リード端子である。37 is a package containing a control circuit 371;
373 is a grommet for drawing out lead wires 346 and 347, and an external lead terminal.
第３図は上記制御回路３７１の一例を示すもので、電極
３４４，３４５間の電気抵抗ＲＸの変化を検出するもの
で、ｒ１〜ｒ３はブリッジ抵抗回路、■。、は電源電圧
である。また第４図は電極３４４゜３４５間を電機容量
ＣＸとしたときの等価回路である。FIG. 3 shows an example of the control circuit 371, which detects a change in the electrical resistance RX between the electrodes 344 and 345, and r1 to r3 are bridge resistance circuits; , is the power supply voltage. FIG. 4 shows an equivalent circuit when the electric capacitance CX is between the electrodes 344° and 345°.
次に動作について説明する０機関１には図示しないアク
セルペダルに応動するスロットルバルブ１２の開度によ
って決定される空気量が吸入されるが、同時に所定の混
合比となるようにインジェクタ１３から燃料が噴射され
、この混合気が機関１で爆発、燃焼し出力を生しる。イ
ンジェクタ１３からの燃料噴射量は主として、インテー
クマ二ホールド１１の圧力、すなわち、圧力センサ１５
の出力と機関１の回転数を信号人力としてエンジンコン
トロールユニット６によって決定される。かくして、蒸
発ガスのパージがないときは、主として圧力センサ１５
と機関１の回転数によって混合比を決定してよいが、パ
ージがあるとパージガス量によって混合比は変化するこ
とになる。Next, the operation will be explained.The engine 1 inhales an amount of air determined by the opening degree of the throttle valve 12 that responds to an accelerator pedal (not shown), but at the same time fuel is injected from the injector 13 to achieve a predetermined mixture ratio. The air-fuel mixture is injected and explodes and burns in the engine 1, producing output. The amount of fuel injected from the injector 13 is mainly determined by the pressure in the intake manifold 11, that is, by the pressure sensor 15.
is determined by the engine control unit 6 using the output of the engine 1 and the rotational speed of the engine 1 as human input signals. Thus, when there is no purge of evaporative gas, the pressure sensor 15
The mixing ratio may be determined based on the rotation speed of the engine 1, but if there is a purge, the mixing ratio will change depending on the amount of purge gas.
したがって、パージ時のガス量を知り混合比を補正する
ことが必要である。パージガス量は吸着剤３６に吸着さ
れたガス量と、パージ時にインテークマニホールド１１
に流入するパージ空気量によって決定される。Therefore, it is necessary to know the gas amount during purging and correct the mixture ratio. The amount of purge gas is determined by the amount of gas adsorbed by the adsorbent 36 and the amount of gas absorbed by the intake manifold 11 during purging.
Determined by the amount of purge air flowing into.
次にパージガス量の検出方法について説明する。Next, a method for detecting the amount of purge gas will be explained.
燃料タンク２内の蒸発ガスは、蒸発ガス量が増大し燃料
タンク２内の圧力が高まるとチエツクバルブ４を介して
吸入ポート３３１から室Ａ内に流入し、さらに流通穴３
５１を通過して室Ｃ内に流入する。ここで蒸発ガスは、
ガス分が吸着剤３６に吸着され、空気のみが流通穴３４
１を通って室り内に入り排出口３２１より大気中へ排出
される。When the amount of evaporated gas increases and the pressure inside the fuel tank 2 increases, the evaporated gas in the fuel tank 2 flows into the chamber A from the suction port 331 via the check valve 4, and then flows into the chamber A from the intake port 331 through the check valve 4.
51 and flows into the chamber C. Here, the evaporative gas is
The gas content is adsorbed by the adsorbent 36, and only air flows through the circulation hole 34.
1 and enters the room and is discharged into the atmosphere from the discharge port 321.
また、機関１のパージ条件が整った場合は、排出口３２
１より流入した空気と共に吸着剤３６に吸着されていた
ガスが再び離脱して室Ｂを通過してパーシロ３３２から
機関１のインテークマニホールドｌｌ側に排出されエア
クリーナ１４から空気流量計１３とスロットルバルブ１
２を介して流入する空気と共に機関１に吸入される。In addition, when the purge conditions for engine 1 are met, the exhaust port 32
The gas adsorbed by the adsorbent 36 along with the air flowing in from the air cleaner 14 separates again, passes through the chamber B, is discharged from the persillo 332 to the intake manifold ll side of the engine 1, and is then transferred from the air cleaner 14 to the air flow meter 13 and the throttle valve 1.
The air is drawn into the engine 1 together with the air flowing in through the engine 2.
さて、蒸発ガスの吸着剤３６への吸着、離脱は、吸着剤
３６の電気的特性、例えば導電率や誘電率を変化させる
。したがって、室Ｃに設けられた電極３４４，３４５間
の抵抗値Ｒｘや容量値ＣＸもガスの吸着、離脱によって
変化することになるため、第３図に示すように電極３４
４，３４５間の抵抗ＲＸをブリッジの一辺とし、他の３
辺を固定抵抗ｒ 、 ％ ｒ ３で形成されたブリフジ
回路の対向２極間に電源電圧ＶＣｃを与えると、抵抗Ｒ
Ｘの変化に伴ってプリフジ回路の他の対向２極間には電
圧が発生する。この電圧変化によって蒸発ガスの吸着量
を測定することが可能となる。Now, adsorption and desorption of the evaporated gas to and from the adsorbent 36 change the electrical properties of the adsorbent 36, such as electrical conductivity and dielectric constant. Therefore, the resistance value Rx and the capacitance value CX between the electrodes 344 and 345 provided in the chamber C will also change due to adsorption and desorption of the gas.
The resistance RX between 4,345 and 345 is one side of the bridge, and the other 3
When a power supply voltage VCc is applied between two opposing poles of a Brifuji circuit whose sides are fixed resistors r and % r3, the resistor R
As X changes, a voltage is generated between the other two opposing poles of the pre-fuji circuit. This voltage change makes it possible to measure the adsorption amount of evaporated gas.
以上は、蒸発ガス吸着装置３に設けた吸着剤３６の吸着
量によって電気的特性変化することを利用した計測方法
について述べたが、他の検出方法としては、第５図に示
すように吸着剤３６中に埋めた温度センサ３８のガスに
よる温度変化を利用しても同様の作用が得られる。The above has described a measurement method that utilizes the fact that the electrical characteristics change depending on the adsorption amount of the adsorbent 36 provided in the evaporative gas adsorption device 3. However, as another detection method, as shown in FIG. A similar effect can be obtained by utilizing the temperature change caused by the gas in the temperature sensor 38 buried in the temperature sensor 36 .
また、パージコントロールパルプ５の開弁時に機関１へ
流入するガス量は、吸着剤３６の吸着量とパージ時に流
入する空気温度と空気流入量によって決定される。した
がってパージされるマニホールド１１の圧力を圧力セン
サ１５によって計測し、流入空気温度を温度センサ７に
よって計測するならばガス量は下記の式より明らかとな
る。Further, the amount of gas flowing into the engine 1 when the purge control pulp 5 is opened is determined by the amount of adsorption of the adsorbent 36, the temperature of the air flowing during purging, and the amount of air flowing. Therefore, if the pressure of the manifold 11 to be purged is measured by the pressure sensor 15 and the temperature of the incoming air is measured by the temperature sensor 7, the gas amount will be determined from the following equation.
ＣＰ−ＱＪ（Ｔ、）＝ ｒフＰト５ｐＪ（”ｌ）ここで
、Ｇ、はパージガス量、Ｑ２はパージ空気量、Ｐ、は大
気圧、Ｐｌはマニホールド圧、Ｔ。CP-QJ (T,) = rftP5pJ ("l) where G is the purge gas amount, Q2 is the purge air amount, P is atmospheric pressure, Pl is manifold pressure, T.
は流入空気温度、Ｓ、はパージ通路断面積である。is the inlet air temperature, and S is the purge passage cross-sectional area.
上記のように明らかとなったパージ時のパージ２ガス量
によって上記圧力センサ１５と機関１の回転数によって
決定されるインジェクタ１３の燃料量を次式のように補
正すれば機関ｌが要求する最適混合比をパージ時も保て
ることになる。By correcting the fuel amount of the injector 13, which is determined by the pressure sensor 15 and the rotation speed of the engine 1, according to the amount of purge 2 gas at the time of purging, as shown in the following equation, the optimum amount required by the engine 1 can be obtained. This means that the mixing ratio can be maintained even during purging.
ここで、Ｇは燃料量、Ｑ、は機関吸入空気量、Ａ／Ｆは
目標混合比、Ｋは定数、Ｎは回転数である。Here, G is the fuel amount, Q is the engine intake air amount, A/F is the target mixture ratio, K is a constant, and N is the rotation speed.
上記は圧力と回転数によって燃料量を決定する燃料噴射
システムでの方法について述べたが、このシステムでは
燃料噴射システムに使用する圧力センサ１５がパージガ
ス量検出にも使用でき極めて経済的なシステムとなる。The above describes a method for a fuel injection system that determines the amount of fuel based on pressure and rotational speed, but in this system, the pressure sensor 15 used in the fuel injection system can also be used to detect the amount of purge gas, making it an extremely economical system. .
一方、燃料量を機関１の吸入空気量を空気流量計にて決
定する方式にあっても、パージガス排出部に圧力センサ
を設置し圧力検出することによって上記と同等の効果を
得ることもできる。On the other hand, even if the fuel amount is determined by the intake air amount of the engine 1 using an air flow meter, the same effect as described above can be obtained by installing a pressure sensor in the purge gas discharge section and detecting the pressure.
また、実施例ではパージ時のパージ空気量を圧力と温度
によって計測する方法を述べたが、パージ空気量を空気
流量計等を使って直接的に計測しても同等の効果が得ら
れる。Further, in the embodiment, a method was described in which the amount of purge air during purging was measured using pressure and temperature, but the same effect can be obtained by directly measuring the amount of purge air using an air flow meter or the like.
以上説明したようにこの発明によれば、蒸発ガス吸着装
置にガス吸着量を検出する検出手段を設けると共に、パ
ージ時に流入するパージ空気量を検出するパージ空気検
出手段を設け、パージ時のパージガス量を検出し、燃料
噴射量をパージガス量に応動して補正するようにしたの
で、パージ時においても機関の要求する所定の混合比が
常に保てることができ、排気ガス浄化や機関の出力安定
化に優れた燃料噴射システムとなる。As explained above, according to the present invention, the evaporated gas adsorption device is provided with a detection means for detecting the amount of gas adsorption, and a purge air detection means is provided for detecting the amount of purge air flowing in during purging. Since the amount of fuel injection is corrected in response to the amount of purge gas, the specified mixture ratio required by the engine can be maintained at all times even during purging, which helps purify exhaust gas and stabilize the output of the engine. This makes for an excellent fuel injection system.
第１図はこの発明の一実施例による燃料噴射システムの
構成図、第２図は蒸発ガス吸着装置の断面図、第３図は
吸着量検出のための制御回路図、第４図は他の吸着量検
出部の電気的等価回路図、第５図は他の吸着量検出方法
を示す構成図である。
１・・・機関、２・・・燃料タンク、３・・・蒸発ガス
吸着ｌｉｔ、５・・・パージコントロールパルプ、６・
・・エンジンコントロールユニット、７・・・吸気温セ
ンサ、１２・・・スロットルバルブ、１３・・・インジ
ェクタ、１５・・・圧力センサ、３２１・・・排出口、
３３１・・・吸入口、３３２・・・パーシロ、３６・・
・吸着剤、３７１・・・制御回路、Ａ、Ｂ、Ｃ，Ｄ・・
・室。
なお、図中同一符号は同−又は相当部分を示す。Fig. 1 is a configuration diagram of a fuel injection system according to an embodiment of the present invention, Fig. 2 is a sectional view of an evaporative gas adsorption device, Fig. 3 is a control circuit diagram for detecting the amount of adsorption, and Fig. 4 is a diagram showing another example of the fuel injection system. FIG. 5 is an electrical equivalent circuit diagram of the adsorption amount detection section, and is a configuration diagram showing another adsorption amount detection method. DESCRIPTION OF SYMBOLS 1... Engine, 2... Fuel tank, 3... Evaporative gas adsorption lit, 5... Purge control pulp, 6...
...Engine control unit, 7...Intake temperature sensor, 12...Throttle valve, 13...Injector, 15...Pressure sensor, 321...Exhaust port,
331... Intake port, 332... Percillo, 36...
・Adsorbent, 371...Control circuit, A, B, C, D...
・Room. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
吸着する吸着剤が封入された室を有し、上記吸着剤の吸
着ガス量を検出する検出手段を有する蒸発ガス吸着手段
と、吸着ガスをパージするパージ手段と、パージ時のパ
ージ空気を検出するパージ空気検出手段と、機関の吸入
する空気量を検出する空気量検出手段と、機関に必要と
する燃料を噴射する燃料噴射手段と、機関に設けられた
各種センサの信号を受け、機関に設けられた各種アクチ
ュエータを作動させるエンジン制御手段を備えた燃料噴
射システムにおいて、上記蒸発ガス吸着手段の吸着ガス
パージ時にエンジン制御手段によって吸着ガス量とパー
ジ空気量とからパージガス量を検出し、かつ、検出した
パージガス量に応動して機関の吸入空気量で決定される
燃料噴射量を補正することを特徴とする燃料噴射システ
ム。An evaporated gas adsorption means having at least an inlet, an outlet, a purge port, and a chamber filled with an adsorbent for adsorbing evaporated gas, and a detection means for detecting the amount of gas adsorbed by the adsorbent, and a means for purging the adsorbed gas. purge means for detecting purge air at the time of purging; purge air detection means for detecting the amount of air taken into the engine; fuel injection means for injecting the fuel required by the engine; In a fuel injection system equipped with an engine control means that receives signals from various sensors installed in the engine and operates various actuators installed in the engine, the amount of adsorbed gas and the purge air are controlled by the engine control means when purging the adsorbed gas of the evaporative gas adsorption means. 1. A fuel injection system characterized by detecting a purge gas amount from a purge gas amount, and correcting a fuel injection amount determined by an engine intake air amount in response to the detected purge gas amount.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2191657A JPH0476239A (en) | 1990-07-17 | 1990-07-17 | Fuel injection system |
| US07/705,412 US5139001A (en) | 1990-07-06 | 1991-05-24 | Fuel supply system |
| DE4120279A DE4120279A1 (en) | 1990-07-06 | 1991-06-19 | FUEL SUPPLY SYSTEM |
| KR1019910011261A KR940004343B1 (en) | 1990-07-06 | 1991-07-03 | Fuel injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2191657A JPH0476239A (en) | 1990-07-17 | 1990-07-17 | Fuel injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0476239A true JPH0476239A (en) | 1992-03-11 |
Family
ID=16278296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2191657A Pending JPH0476239A (en) | 1990-07-06 | 1990-07-17 | Fuel injection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0476239A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609141A (en) * | 1994-06-22 | 1997-03-11 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel control device |
| US8107225B2 (en) | 2001-03-20 | 2012-01-31 | American Power Conversion Corporation | Adjustable scalable rack power system and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135625A (en) * | 1985-12-09 | 1987-06-18 | Nippon Denso Co Ltd | Air-fuel ratio control device for internal combustion engine |
-
1990
- 1990-07-17 JP JP2191657A patent/JPH0476239A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62135625A (en) * | 1985-12-09 | 1987-06-18 | Nippon Denso Co Ltd | Air-fuel ratio control device for internal combustion engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5609141A (en) * | 1994-06-22 | 1997-03-11 | Toyota Jidosha Kabushiki Kaisha | Evaporative fuel control device |
| US8107225B2 (en) | 2001-03-20 | 2012-01-31 | American Power Conversion Corporation | Adjustable scalable rack power system and method |
| US8867193B2 (en) | 2001-03-20 | 2014-10-21 | Schneider Electric It Corporation | Adjustable scalable rack power system and method |
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