JPH0510180A - Fuel injection quantity controller of internal combustion engine - Google Patents

Fuel injection quantity controller of internal combustion engine

Info

Publication number
JPH0510180A
JPH0510180A JP18538391A JP18538391A JPH0510180A JP H0510180 A JPH0510180 A JP H0510180A JP 18538391 A JP18538391 A JP 18538391A JP 18538391 A JP18538391 A JP 18538391A JP H0510180 A JPH0510180 A JP H0510180A
Authority
JP
Japan
Prior art keywords
fuel
control
fuel injection
misfire rate
feedback
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.)
Granted
Application number
JP18538391A
Other languages
Japanese (ja)
Other versions
JP2961971B2 (en
Inventor
Katsuhiko Toyoda
克彦 豊田
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.)
Suzuki Motor Corp
Original Assignee
Suzuki 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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP18538391A priority Critical patent/JP2961971B2/en
Publication of JPH0510180A publication Critical patent/JPH0510180A/en
Application granted granted Critical
Publication of JP2961971B2 publication Critical patent/JP2961971B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To improve the durability of a catalyzer by selecting the stoppage of feedback control and fuel-cut control according to a preoperated misfire rate during the feedback control of a fuel injection quantity in addition to fuel increment control and the fuel-cut control at the time of nonfeedback control, respectively. CONSTITUTION:In a device, controlling a fuel injection valve 24 and an ignition coil 38 generating high voltage to be fed to a spark plug through a control part, 42, and also controlling a fuel injection quantity for feedback according to output of an exhaust sensor, a misfire rate is operated in advance at the control part 42. When the fuel injection quantity is in the feedback control and the misfire rate is larger than the specified value (b), the feedback control is suspended, and when the misfire rate is larger than the specified value (a) (>b), fuel-cut control is carried out. Likewise, when it is in nonfeedback control and the misfire rate is larger than the specified value (b), fuel increment control is carried out, and afterward, when the misfire rate is not made smaller than the specified value (b), the fuel-cut control is carried out.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は内燃機関の燃料噴射量
制御装置に係り、特に排気ガス中の酸素濃度を検出する
排気センサからの検出信号によりインジェクタの燃料噴
射量をフィードバック制御する内燃機関の燃料噴射量制
御装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel injection amount control device for an internal combustion engine, and more particularly to an internal combustion engine for feedback controlling the fuel injection amount of an injector by a detection signal from an exhaust sensor which detects the oxygen concentration in exhaust gas. The present invention relates to a fuel injection amount control device.

【0002】[0002]

【従来の技術】車両の内燃機関においては、排ガス有害
成分や燃料消費率等の問題の対応策として電子式の燃料
噴射制御装置を備えたものがある。燃料噴射制御装置に
は、内燃機関が1サイクル当りの吸入する空気量が吸気
マニホルド内の絶対圧力に略比例することを利用する方
式のものがある。このような方式の燃料噴射制御装置
は、吸気圧力や機関回転数等の諸条件により燃料の噴射
量を設定している。
2. Description of the Related Art Some internal combustion engines of vehicles are equipped with an electronic fuel injection control device as a countermeasure against problems such as exhaust gas harmful components and fuel consumption rate. There is a fuel injection control device that utilizes the fact that the amount of air taken in by the internal combustion engine per cycle is approximately proportional to the absolute pressure in the intake manifold. The fuel injection control device of this type sets the fuel injection amount according to various conditions such as intake pressure and engine speed.

【0003】また、内燃機関の失火検出方法としては、
特公昭59−30895号公報に開示される如く、排気
成分の酸素濃度を検出する酸素濃度検出器の出力信号を
用いて吸入混合気の空燃比を制御する空燃比フィードバ
ック制御式内燃機関の失火を検出する方法において、酸
素濃度検出器の出力信号を周波数弁別することにより失
火検出信号を得るものがあった。
Further, as a method of detecting misfire of an internal combustion engine,
As disclosed in Japanese Patent Publication No. 59-30895, the misfire of an air-fuel ratio feedback control type internal combustion engine that controls the air-fuel ratio of the intake air-fuel mixture by using the output signal of an oxygen concentration detector that detects the oxygen concentration of exhaust gas components. In some detection methods, the misfire detection signal is obtained by discriminating the frequency of the output signal of the oxygen concentration detector.

【0004】更に、空燃比制御装置としては、特公昭6
2−29631号公報に開示される如く、排気ガス中の
酸素濃度により空燃比を検出する酸素濃度検出器、酸素
濃度検出器からの信号によりフィードバック制御して空
燃比を理論空燃比付近に常に保つようにする制御回路を
備え、制御回路からの信号に基づいて気化器の燃料補正
通路または空気補正通路に設けられるソレノイドバルブ
を開閉し、空燃比を制御する空燃比制御装置において、
吸入管負圧により減速時の失火を検出する負圧検出器、
アイドリング状態を検出するスロットル検出器を備え、
スロットル検出器からの信号により制御回路で常に走行
直前の最新のアイドリング時のデューティ比を記憶さ
せ、減速時失火を生じる際に負圧検出器からの信号で制
御回路によるフィードバック制御を停止してデューティ
比を記憶された値に固定するように構成したものがあっ
た。
Further, as an air-fuel ratio control device, Japanese Patent Publication Sho 6
As disclosed in Japanese Patent Laid-Open No. 2-29631, an oxygen concentration detector that detects the air-fuel ratio based on the oxygen concentration in exhaust gas, and feedback control is performed by a signal from the oxygen concentration detector to constantly maintain the air-fuel ratio near the stoichiometric air-fuel ratio. In the air-fuel ratio control device for controlling the air-fuel ratio by opening and closing a solenoid valve provided in the fuel correction passage or the air correction passage of the carburetor based on a signal from the control circuit,
Negative pressure detector that detects misfire during deceleration by suction pipe negative pressure,
Equipped with a throttle detector that detects the idling state,
The control circuit always stores the latest duty ratio at the time of idling immediately before running by the signal from the throttle detector, and when misfire occurs during deceleration, the feedback from the control circuit is stopped by the signal from the negative pressure detector to stop the duty. Some were configured to fix the ratio to a memorized value.

【0005】[0005]

【発明が解決しようとする課題】ところで、従来の内燃
機関の燃料噴射量制御装置としては、失火検出によって
燃料を制御するものがあるが、この方策のものは、失火
を回避しながら希薄燃焼を追求するものである。
By the way, as a conventional fuel injection amount control device for an internal combustion engine, there is a device for controlling fuel by misfire detection. However, with this measure, lean burn is performed while avoiding misfire. It is something to pursue.

【0006】また、従来の内燃機関の燃料噴射量制御装
置では、空燃比のフィードバック中に失火するとO2
ンサがリーンと判定し、リッチ方向に燃料を増加させて
しまっていた。
Further, in the conventional fuel injection amount control system for an internal combustion engine, if a misfire occurs during feedback of the air-fuel ratio, the O 2 sensor determines that the fuel is lean and increases the fuel in the rich direction.

【0007】この結果、触媒に未燃焼ガスが多く送り込
まれ、この触媒中で燃焼するため、触媒温度が上昇し、
触媒の耐久性を低下させる惧れがあるとともに、触媒の
破損を招く惧れがあり、実用上不利であるという不都合
があった。
As a result, a large amount of unburned gas is sent to the catalyst and burns in this catalyst, so the catalyst temperature rises,
There is a possibility that the durability of the catalyst may be lowered and the catalyst may be damaged, which is disadvantageous in practical use.

【0008】[0008]

【課題を解決するための手段】そこで、この発明は上述
不都合を除去するために、排気ガス中の酸素濃度を検出
する排気センサからの検出信号によりインジェクタの燃
料噴射量をフィードバック制御する内燃機関の燃料噴射
量制御装置において、予め失火率を演算しフィードバッ
ク制御中に失火率に応じてフィードバック制御の停止と
燃料カット制御とを選択するとともにフィードバック制
御が行われていない場合には前記失火率に応じて燃料増
量制御と燃料カット制御とを選択する制御部を設けたこ
とを特徴とする。
In order to eliminate the above-mentioned inconvenience, the present invention discloses an internal combustion engine in which the fuel injection amount of an injector is feedback-controlled by a detection signal from an exhaust sensor which detects the oxygen concentration in exhaust gas. In the fuel injection amount control device, the misfire rate is calculated in advance and the feedback control is stopped and the fuel cut control is selected according to the misfire rate during the feedback control, and the feedback control is performed according to the misfire rate when the feedback control is not performed. It is characterized in that a control unit for selecting between the fuel increase control and the fuel cut control is provided.

【0009】[0009]

【作用】上述の如く発明したことにより、制御部によっ
て予め失火率を演算し、フィードバック制御中に失火率
に応じてフィードバック制御の停止と燃料カット制御と
を選択するとともに、フィードバック制御が行われてい
ない場合には、失火率に応じて燃料増量制御と燃料カッ
ト制御とを選択している。
According to the invention as described above, the control unit calculates the misfire rate in advance, and during the feedback control, the feedback control is stopped and the fuel cut control is selected according to the misfire rate, and the feedback control is performed. If not, the fuel increase control and the fuel cut control are selected according to the misfire rate.

【0010】[0010]

【実施例】以下図面に基づいてこの発明の実施例を詳細
に説明する。
Embodiments of the present invention will be described in detail below with reference to the drawings.

【0011】図1〜図3はこの発明の実施例を示すもの
である。図3において、2は内燃機関、4は吸気通路、
6は排気通路である。
1 to 3 show an embodiment of the present invention. In FIG. 3, 2 is an internal combustion engine, 4 is an intake passage,
6 is an exhaust passage.

【0012】第1吸気通路4−1の上流側にエアクリー
ナ8とエアフローメータ10とが設けられ、第1吸気通
路4−1の下流側は、吸気絞り弁12を備えたスロット
ルボディ14に形成した第2吸気通路4−2に連通して
いる。このスロットルボディ14の第2吸気通路4−2
は、吸気マニホルド16に形成した第3吸気通路4−3
に連通している。この第3吸気通路4−3下流端は、吸
気弁18を介して前記内燃機関2の燃焼室20に連通し
ている。
An air cleaner 8 and an air flow meter 10 are provided on the upstream side of the first intake passage 4-1 and a downstream side of the first intake passage 4-1 is formed on a throttle body 14 having an intake throttle valve 12. It communicates with the second intake passage 4-2. The second intake passage 4-2 of the throttle body 14
Is a third intake passage 4-3 formed in the intake manifold 16.
Is in communication with. A downstream end of the third intake passage 4-3 communicates with a combustion chamber 20 of the internal combustion engine 2 via an intake valve 18.

【0013】燃焼室20には、図示しない点火プラグが
設けられ、排気弁22を介して前記排気路通路6の上流
側に連通している。
A spark plug (not shown) is provided in the combustion chamber 20 and communicates with an upstream side of the exhaust passage 6 through an exhaust valve 22.

【0014】前記吸気マニホルド16には、前記燃焼室
20方向に指向させて燃料噴射弁24が装着されてい
る。燃料噴射弁24には、燃料供給管26に導かれて燃
料タンク28の燃料が圧送される。前記燃料供給管26
の途中には、燃料の圧力を調整する燃料圧力調整器30
が介設されている。前記燃料噴射弁24には、燃料ポン
プ32の駆動により燃料供給管26に導かれて燃料タン
ク28内の燃料が圧送され、燃料供給管26の途中に燃
料フィルタ34が介設されている。また、燃料供給管2
6の途中に一端側が連通し、他端側が前記燃料タンク2
8の燃料中に開口する圧力調整用通路36を設けてい
る。この圧力調整用通路36には、前記燃料圧力調整器
30が接続されている。
A fuel injection valve 24 is attached to the intake manifold 16 so as to be directed toward the combustion chamber 20. The fuel in the fuel tank 28 is sent under pressure to the fuel injection valve 24 by being guided to the fuel supply pipe 26. The fuel supply pipe 26
A fuel pressure regulator 30 that regulates the fuel pressure
Is installed. The fuel in the fuel tank 28 is pressure-fed to the fuel injection valve 24 by being driven by the fuel pump 32 by the drive of the fuel pump 32, and a fuel filter 34 is provided in the middle of the fuel supply pipe 26. In addition, the fuel supply pipe 2
One end side communicates with the middle of 6, and the other end side communicates with the fuel tank 2
8 is provided with a pressure adjusting passage 36 that opens into the fuel. The fuel pressure regulator 30 is connected to the pressure regulating passage 36.

【0015】また、図示しない点火プラグは、イグニシ
ョンコイル38により発生された高電圧をディストリビ
ュータ40により分配供給され、飛火される。
Further, the spark plug (not shown) is supplied with the high voltage generated by the ignition coil 38 by the distributor 40 and is fired.

【0016】前記燃料噴射弁24、イグニションコイル
38は、夫々制御手段たる制御部42に接続されてい
る。なお、イグニションコイル38は、パワーユニット
44を介して制御部42に接続されている。この制御部
42には、吸入空気量を検出するエアフローメータ1
0、冷却水通路46内の冷却水温度を検出する水温セン
サ48、触媒コンバータ(図示せず)上流側の排気通路
6に設けた排気ガス中の酸素濃度を検出する排気センサ
であるO2 センサ50、クランク角を検出するクランク
角センサ52等の各種センサや機器類が接続されてい
る。
The fuel injection valve 24 and the ignition coil 38 are connected to a control unit 42 which is a control means. The ignition coil 38 is connected to the control unit 42 via the power unit 44. The control unit 42 includes an air flow meter 1 for detecting the intake air amount.
0, a water temperature sensor 48 that detects the temperature of the cooling water in the cooling water passage 46, an O 2 sensor that is an exhaust sensor that detects the oxygen concentration in the exhaust gas provided in the exhaust passage 6 upstream of the catalytic converter (not shown) 50, various sensors such as a crank angle sensor 52 for detecting a crank angle, and devices are connected.

【0017】前記制御部42は、予め失火率を演算し、
フィードバック制御中に失火率に応じてフィードバック
制御の停止と燃料カット制御とを選択するとともに、フ
ィードバック制御が行われていない場合には、前記失火
率に応じて燃料増量制御と燃料カット制御とを選択べく
構成する。
The control unit 42 calculates the misfire rate in advance,
The feedback control is stopped and the fuel cut control is selected according to the misfire rate during the feedback control, and when the feedback control is not performed, the fuel increase control and the fuel cut control are selected according to the misfire rate. Configure accordingly.

【0018】詳述すれば、前記制御部42は、予め失火
率を演算し、フィードバック制御中で失火が所定値bよ
り大なる場合にフィードバック制御を停止し、補正係数
を1.0にする。
More specifically, the control unit 42 calculates the misfire rate in advance, stops the feedback control when the misfire is larger than the predetermined value b during the feedback control, and sets the correction coefficient to 1.0.

【0019】また、フィードバック制御中で失火率がa
より大なる場合には失火率をクリアとし、Xsec間フ
ューエルカット制御を行っている。
Further, the misfire rate is a during feedback control.
When it becomes larger, the misfire rate is cleared and the fuel cut control is performed for Xsec.

【0020】更に、フィードバック制御中でなく失火率
が所定値bより大なる場合に燃料増加、例えば一定時間
に一定量だけ増量し、その後に失火率が所定値bより小
とならない場合は、フューエルカット制御を行うととも
に、失火率が所定値bより小となった場合は、増量を停
止するべく制御するものである(図2参照)。このと
き、設定値a、bはa>bの関係にある。
Further, when the misfire rate is higher than the predetermined value b without the feedback control, the fuel is increased, for example, the fuel amount is increased by a constant amount in a certain time, and when the misfire rate does not become smaller than the predetermined value b after that, the fuel is supplied. The cut control is performed, and when the misfire rate becomes smaller than the predetermined value b, the increase control is stopped (see FIG. 2). At this time, the set values a and b have a relation of a> b.

【0021】次に内燃機関2の燃料噴射量制御装置の動
作を図1の制御用フローチャートに沿って説明する。
Next, the operation of the fuel injection amount control device for the internal combustion engine 2 will be described with reference to the control flowchart of FIG.

【0022】メインのプログラムがスタート(ステップ
100)されると、失火率演算(ステップ102)が行
われた後に、O2 フィードバック制御中か否かの判断
(ステップ104)を行う。
When the main program is started (step 100), the misfire rate is calculated (step 102), and then it is judged whether or not the O 2 feedback control is being executed (step 104).

【0023】そして、この判断(ステップ104)がY
ESの場合には、失火率が所定値a以上か否かの判断
(ステップ106)を行い、この判断(ステップ10
6)がNOの場合には、失火率が所定値b以上が否かの
判断(ステップ108)を行い、この判断(ステップ1
08)がYESの場合には、O2 フィードバック制御を
停止し、補正係数を1.0とし(ステップ110)、そ
の後に判断(ステップ106)に戻る。この判断(ステ
ップ108)がNOの場合には、判断(ステップ10
2)に戻る。
Then, this judgment (step 104) is Y
In the case of ES, it is judged whether the misfire rate is a predetermined value a or more (step 106), and this judgment is made (step 10).
When 6) is NO, it is judged whether the misfire rate is equal to or more than the predetermined value b (step 108), and this judgment (step 1
If 08) is YES, the O 2 feedback control is stopped, the correction coefficient is set to 1.0 (step 110), and then the process returns to the determination (step 106). If this determination (step 108) is NO, the determination (step 10
Return to 2).

【0024】また、判断(ステップ106)がYESの
場合には、Xsec間だけフューエルカット制御を行
い、失火率を0にクリアし(ステップ112)、判断
(ステップ102)に戻る。
When the determination (step 106) is YES, the fuel cut control is performed only for Xsec, the misfire rate is cleared to 0 (step 112), and the process returns to the determination (step 102).

【0025】更に、上述の判断(ステップ104)がN
Oの場合には、失火率が所定値a以上か否かの判断(ス
テップ114)を行い、この判断(ステップ114)が
NOの場合には、失火率が所定値b以上が否かの判断
(ステップ116)を行い、この判断(ステップ11
6)がYESの場合には、燃料増量を行い、その後に失
火率が所定値b以上か否かの判断(ステップ120)を
行い、判断(ステップ116)がNOの場合には、判断
(ステップ102)に戻る。
Further, the above judgment (step 104) is N
In the case of O, it is judged whether the misfire rate is a predetermined value a or more (step 114), and when the judgment (step 114) is NO, it is judged whether the misfire rate is a predetermined value b or more. (Step 116) is performed and this judgment is made (Step 11
If 6) is YES, the fuel amount is increased, and then it is determined whether the misfire rate is the predetermined value b or more (step 120). If the determination (step 116) is NO, the determination is made (step). Return to 102).

【0026】前記判断(ステップ120)がYESの場
合には、Xsec間だけフューエルカット制御を行い、
失火率を0にクリアし(ステップ112)、判断(ステ
ップ102)に戻る。
If the determination (step 120) is YES, the fuel cut control is performed only for Xsec,
The misfire rate is cleared to 0 (step 112), and the process returns to the determination (step 102).

【0027】前記(ステップ120)がNOの場合に
は、燃料の増量を停止し(ステップ122)、判断(ス
テップ102)に戻る。
When the above (step 120) is NO, the fuel increase is stopped (step 122) and the process returns to the determination (step 102).

【0028】これにより、図示しない触媒に送り込まれ
る未燃焼ガスを減少してこの触媒内での未燃焼ガスの燃
焼を防止でき、前記触媒の耐久性を向上させるととも
に、この触媒の破損を未然に防止でき、経済的及び実用
上有利である。
As a result, the amount of unburned gas sent to the catalyst (not shown) can be reduced, combustion of the unburned gas in the catalyst can be prevented, the durability of the catalyst can be improved, and damage to the catalyst can be prevented. It can be prevented and is economically and practically advantageous.

【0029】[0029]

【発明の効果】以上詳細に説明した如くこの発明によれ
ば、予め失火率を演算しフィードバック制御中に失火率
に応じてフィードバック制御の停止と燃料カット制御と
を選択するとともにフィードバック制御が行われていな
い場合には失火率に応じて燃料増量制御と燃料カット制
御とを選択する制御部を設けたので、触媒に送り込まれ
る未燃焼ガスを減少して触媒内での未燃焼ガスの燃焼を
防止でき、触媒の耐久性を向上させるとともに、触媒の
破損を未然に防止でき、実用上有利である。
As described above in detail, according to the present invention, the misfire rate is calculated in advance, and during the feedback control, the feedback control is stopped and the fuel cut control is selected according to the misfire rate, and the feedback control is performed. If not, a control unit that selects between fuel increase control and fuel cut control according to the misfire rate is provided, so unburned gas sent to the catalyst is reduced and combustion of unburned gas in the catalyst is prevented. Therefore, the durability of the catalyst can be improved, and damage to the catalyst can be prevented before it is practically advantageous.

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

【図1】この発明の実施例の内燃機関の燃料噴射量制御
装置の作用を説明するフローチャートである。
FIG. 1 is a flow chart illustrating an operation of a fuel injection amount control device for an internal combustion engine according to an embodiment of the present invention.

【図2】内燃機関の燃料噴射量制御装置のタイムチャー
トである。
FIG. 2 is a time chart of a fuel injection amount control device for an internal combustion engine.

【図3】内燃機関の燃料噴射量制御装置の概略構成図で
ある。
FIG. 3 is a schematic configuration diagram of a fuel injection amount control device for an internal combustion engine.

【符号の説明】[Explanation of symbols]

2 内燃機関 4 吸気通路 6 排気通路 12 吸気絞り弁 14 スロットルボディ 16 吸気マニホルド 24 燃料噴射弁 28 燃料タンク 36 圧力調整用通路 42 制御部 48 水温センサ 50 O2 センサ 52 クランク角センサ2 internal combustion engine 4 intake passage 6 exhaust passage 12 intake throttle valve 14 throttle body 16 intake manifold 24 fuel injection valve 28 fuel tank 36 pressure adjusting passage 42 controller 48 water temperature sensor 50 O 2 sensor 52 crank angle sensor

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成3年9月6日[Submission date] September 6, 1991

【手続補正1】[Procedure Amendment 1]

【補正対象書類名】図面[Document name to be corrected] Drawing

【補正対象項目名】全図[Correction target item name] All drawings

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【図2】 [Fig. 2]

【図3】 [Figure 3]

【図1】 [Figure 1]

Claims (1)

【特許請求の範囲】 【請求項1】 排気ガス中の酸素濃度を検出する排気セ
ンサからの検出信号によりインジェクタの燃料噴射量を
フィードバック制御する内燃機関の燃料噴射量制御装置
において、予め失火率を演算しフィードバック制御中に
失火率に応じてフィードバック制御の停止と燃料カット
制御とを選択するとともにフィードバック制御が行われ
ていない場合には前記失火率に応じて燃料増量制御と燃
料カット制御とを選択する制御部を設けたことを特徴と
する内燃機関の燃料噴射量制御装置。
Claim: What is claimed is: 1. A fuel injection amount control device for an internal combustion engine, which feedback-controls a fuel injection amount of an injector according to a detection signal from an exhaust sensor that detects an oxygen concentration in exhaust gas. Calculate and select feedback control stop and fuel cut control according to the misfire rate during feedback control, and select fuel increase control and fuel cut control according to the misfire rate if feedback control is not performed. A fuel injection amount control device for an internal combustion engine, comprising:
JP18538391A 1991-06-29 1991-06-29 Fuel injection amount control device for internal combustion engine Expired - Fee Related JP2961971B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18538391A JP2961971B2 (en) 1991-06-29 1991-06-29 Fuel injection amount control device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18538391A JP2961971B2 (en) 1991-06-29 1991-06-29 Fuel injection amount control device for internal combustion engine

Publications (2)

Publication Number Publication Date
JPH0510180A true JPH0510180A (en) 1993-01-19
JP2961971B2 JP2961971B2 (en) 1999-10-12

Family

ID=16169850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18538391A Expired - Fee Related JP2961971B2 (en) 1991-06-29 1991-06-29 Fuel injection amount control device for internal combustion engine

Country Status (1)

Country Link
JP (1) JP2961971B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7234446B2 (en) 2004-11-30 2007-06-26 Suzuki Motor Corporation Misfire detector for multi-cylinder engine
JP2016217196A (en) * 2015-05-15 2016-12-22 トヨタ自動車株式会社 Engine device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7234446B2 (en) 2004-11-30 2007-06-26 Suzuki Motor Corporation Misfire detector for multi-cylinder engine
JP2016217196A (en) * 2015-05-15 2016-12-22 トヨタ自動車株式会社 Engine device

Also Published As

Publication number Publication date
JP2961971B2 (en) 1999-10-12

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