JPS6371453U - - Google Patents
Info
- Publication number
- JPS6371453U JPS6371453U JP16564586U JP16564586U JPS6371453U JP S6371453 U JPS6371453 U JP S6371453U JP 16564586 U JP16564586 U JP 16564586U JP 16564586 U JP16564586 U JP 16564586U JP S6371453 U JPS6371453 U JP S6371453U
- Authority
- JP
- Japan
- Prior art keywords
- pulse signal
- cycle
- reference angle
- throttle valve
- angle
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000004092 self-diagnosis Methods 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
第１図は本考案の構成図、第２図は本考案の一
実施例及び従来例に共通の電子制御燃料噴射式内
燃機関のシステム概略図、第３図は同上実施例に
おける自己診断制御を示すフローチヤート、第４
図は同上実施例におけるスロツトル弁開度センサ
の出力とスロツトル弁開度との関係を示すグラフ
、第５図は同上実施例における予測周期の範囲を
示すグラフである。
１……機関、３……クランク角センサ、９……
コントロールユニツト、１５……スロツトル弁、
１６……スロツトル弁開度センサ。
Fig. 1 is a configuration diagram of the present invention, Fig. 2 is a system schematic diagram of an electronically controlled fuel injection internal combustion engine common to an embodiment of the present invention and a conventional example, and Fig. 3 is a self-diagnosis control in the same embodiment. Flowchart showing, No. 4
The figure is a graph showing the relationship between the output of the throttle valve opening sensor and the throttle valve opening in the above embodiment, and FIG. 5 is a graph showing the range of the predicted cycle in the above embodiment. 1... Engine, 3... Crank angle sensor, 9...
Control unit, 15...throttle valve,
16...Throttle valve opening sensor.
Claims (1)
回転毎にそれぞれ所定のクランク角度分のパルス
巾をもつパルス信号を発するクランク角検出装置
において、前記基準角度パルス信号の周期を計測
する基準角度パルス信号周期計測手段と、内燃機
関の吸気通路に介装されたスロツトル弁の開度変
化を検出するスロツトル弁開度変化検出手段と、
前回計測された基準角度パルス信号の周期と検出
されたスロツトル弁の開度変化に基づいて今回の
基準角度パルス信号の周期の予測範囲を設定する
予測周期設定手段と、今回検出された周期が設定
された前記予測範囲外であるときにクランク角検
出装置の異常を判定する異常判定手段と、を備え
てなるクランク角検出装置の自己診断装置。 In a crank angle detection device that emits a pulse signal having a pulse width corresponding to a predetermined crank angle for each reference angle and unit angle rotation of a crankshaft of an internal combustion engine, a reference angle pulse signal period is used to measure the period of the reference angle pulse signal. a measuring means; a throttle valve opening change detection means for detecting a change in the opening of a throttle valve installed in an intake passage of the internal combustion engine;
Predicted cycle setting means for setting a predicted range of the cycle of the current reference angle pulse signal based on the cycle of the reference angle pulse signal measured last time and the detected throttle valve opening change, and the cycle detected this time is set. A self-diagnosis device for a crank angle detecting device, comprising: abnormality determining means for determining an abnormality in the crank angle detecting device when the detected predicted range is outside the predicted range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16564586U JPS6371453U (en) | 1986-10-30 | 1986-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16564586U JPS6371453U (en) | 1986-10-30 | 1986-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6371453U true JPS6371453U (en) | 1988-05-13 |
Family
ID=31095867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16564586U Pending JPS6371453U (en) | 1986-10-30 | 1986-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6371453U (en) |
-
1986
- 1986-10-30 JP JP16564586U patent/JPS6371453U/ja active Pending