JPH0321541U - - Google Patents
Info
- Publication number
- JPH0321541U JPH0321541U JP8009089U JP8009089U JPH0321541U JP H0321541 U JPH0321541 U JP H0321541U JP 8009089 U JP8009089 U JP 8009089U JP 8009089 U JP8009089 U JP 8009089U JP H0321541 U JPH0321541 U JP H0321541U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- misfire
- fuel supply
- engine
- internal combustion
- 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 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の構成を示すブロツク図、第２
図は本考案の一実施例を示すシステム概略図、第
３図〜第７図はそれぞれ同上実施例における制御
内容を示すフローチヤート、第８図及び第９図は
それぞれ失火発生時と正常燃焼時とにおける筒内
圧とピストンスピードとの変化を示すタイムチヤ
ートである。
１……機関、６……燃料噴射弁、１２……コン
トロールユニツト、１４……クランク角センサ、
１５……水温センサ、１６……補助空気通路、１
７……補助空気量制御弁。
Figure 1 is a block diagram showing the configuration of the present invention, Figure 2 is a block diagram showing the configuration of the present invention.
The figure is a system schematic diagram showing an embodiment of the present invention, Figures 3 to 7 are flowcharts showing control details in the above embodiment, and Figures 8 and 9 are diagrams for when a misfire occurs and when normal combustion occurs, respectively. This is a time chart showing changes in cylinder pressure and piston speed at 1... Engine, 6... Fuel injection valve, 12... Control unit, 14... Crank angle sensor,
15...Water temperature sensor, 16...Auxiliary air passage, 1
7...Auxiliary air amount control valve.
Claims (1)
毎に燃料供給するよう構成された多気筒内燃機関
において、 失火が発生している気筒を判別する失火気筒判
別手段と、 該失火気筒判別手段により失火発生が判別され
た気筒に対する前記燃料供給手段による燃料供給
を強制的に停止させる燃料供給停止手段と、 を備えて構成したことを特徴とする多気筒内燃
機関のフエイルセーフ装置。 (2) 機関温度を検出する機関温度検出手段と、 前記検出された機関温度が所定温度以下である
ときに前記燃料供給停止手段による燃料の供給停
止制御を所定期間だけ許可する低温時停止制御手
段と、 を設けたことを特徴とする請求項１記載の多気
筒内燃機関のフエイルセーフ装置。 (3) 失火が発生している気筒を判別する失火気
筒判別手段と、 機関の無負荷運転状態において前記失火気筒判
別手段により失火発生が判別されたときに機関の
吸入空気量を増量補正する吸気増量補正手段と、 を備えて構成されたことを特徴とする多気筒内
燃機関のフエイルセーフ装置。[Scope of Claim for Utility Model Registration] (1) Misfire cylinder discrimination for determining the cylinder in which a misfire has occurred in a multi-cylinder internal combustion engine configured to supply fuel to each cylinder by a fuel supply means provided for each cylinder. A multi-cylinder internal combustion engine comprising: a fuel supply stop means for forcibly stopping fuel supply by the fuel supply means to a cylinder in which a misfire has been determined to have occurred by the misfire cylinder discrimination means. fail-safe device. (2) engine temperature detection means for detecting engine temperature; and low temperature stop control means for permitting fuel supply stop control by the fuel supply stop means for a predetermined period when the detected engine temperature is below a predetermined temperature. The fail-safe device for a multi-cylinder internal combustion engine according to claim 1, further comprising: and. (3) misfiring cylinder discriminating means for discriminating a cylinder in which a misfire has occurred; and an intake air intake for increasing the intake air amount of the engine when the occurrence of a misfire is determined by the misfiring cylinder discriminating means in a no-load operating state of the engine. A fail-safe device for a multi-cylinder internal combustion engine, comprising: an increase correction means;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8009089U JPH0321541U (en) | 1989-07-10 | 1989-07-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8009089U JPH0321541U (en) | 1989-07-10 | 1989-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0321541U true JPH0321541U (en) | 1991-03-04 |
Family
ID=31624837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8009089U Pending JPH0321541U (en) | 1989-07-10 | 1989-07-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0321541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7559192B2 (en) | 2006-03-29 | 2009-07-14 | Mitsubishi Electric Corp. | Engine control apparatus |
-
1989
- 1989-07-10 JP JP8009089U patent/JPH0321541U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7559192B2 (en) | 2006-03-29 | 2009-07-14 | Mitsubishi Electric Corp. | Engine control apparatus |
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