JPS62101071U - - Google Patents
Info
- Publication number
- JPS62101071U JPS62101071U JP19288185U JP19288185U JPS62101071U JP S62101071 U JPS62101071 U JP S62101071U JP 19288185 U JP19288185 U JP 19288185U JP 19288185 U JP19288185 U JP 19288185U JP S62101071 U JPS62101071 U JP S62101071U
- Authority
- JP
- Japan
- Prior art keywords
- ignition
- cylinder
- signals
- microcomputer
- abnormality
- 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
Links
- 238000004092 self-diagnosis Methods 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims 2
- 238000010304 firing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
第１図は本考案の一実施例を示す電子配電式点
火回路とその自己診断装置の回路図、第２図は同
上実施例の自己診断ルーチンを示すフローチヤー
ト、第３図は従来の自己診断装置の一例を示す回
路図である。
１ａ〜１ｆ……点火コイル、２ａ〜２ｆ……パ
ワートランジスタ、３ａ〜３ｆ……点火栓、４…
…マイクロコンピユータ、５……マルチプレクサ
、６ａ〜６ｆ……単安定マルチバイブレータ、７
ａ〜７ｆ……ダイオード、８……クランク角セン
サ。
Fig. 1 is a circuit diagram of an electronic power distribution type ignition circuit and its self-diagnosis device showing one embodiment of the present invention, Fig. 2 is a flowchart showing a self-diagnosis routine of the same embodiment, and Fig. 3 is a conventional self-diagnosis. FIG. 2 is a circuit diagram showing an example of a device. 1a to 1f...Ignition coil, 2a to 2f...Power transistor, 3a to 3f...Ignition plug, 4...
...Microcomputer, 5...Multiplexer, 6a-6f...Monostable multivibrator, 7
a to 7f...Diode, 8...Crank angle sensor.
Claims (1)
をマルチプレクサを介して気筒毎に設けられた点
火コイルに点火順序に従つて分配して点火させる
ようにした電子配電式点火回路において、各気筒
毎の点火コイルを流れる電流信号を夫々入力して
動作し、気筒毎に異なる動作時間をもつ気筒数個
の単安定マルチバイブレータを設け、これら各単
安定マルチバイブレータの信号をマイクロコンピ
ユータの共通の入力端子から入力させ、マイクロ
コンピユータにより気筒毎に異なる入力信号の異
常の有無を半別して点火回路の異常診断を行うよ
うにしたことを特徴とする電子配電式点火回路の
自己診断装置。 In an electronic power distribution type ignition circuit in which the ignition signal output from a microcomputer is distributed to the ignition coils provided for each cylinder via a multiplexer and ignited according to the firing order, the ignition signal flows through the ignition coil of each cylinder. Several cylinders are provided with monostable multivibrators that operate by inputting current signals and have different operating times for each cylinder, and the signals of these monostable multivibrators are inputted from a common input terminal of a microcomputer. A self-diagnosis device for an electronic power distribution type ignition circuit, characterized in that a computer diagnoses an abnormality in the ignition circuit by semi-dividing the presence or absence of an abnormality in input signals that differ for each cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19288185U JPH0315824Y2 (en) | 1985-12-17 | 1985-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19288185U JPH0315824Y2 (en) | 1985-12-17 | 1985-12-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62101071U true JPS62101071U (en) | 1987-06-27 |
| JPH0315824Y2 JPH0315824Y2 (en) | 1991-04-05 |
Family
ID=31148378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19288185U Expired JPH0315824Y2 (en) | 1985-12-17 | 1985-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0315824Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02298667A (en) * | 1989-05-12 | 1990-12-11 | Japan Electron Control Syst Co Ltd | Self-diagnostic device for ignition of internal combustion engine |
-
1985
- 1985-12-17 JP JP19288185U patent/JPH0315824Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02298667A (en) * | 1989-05-12 | 1990-12-11 | Japan Electron Control Syst Co Ltd | Self-diagnostic device for ignition of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0315824Y2 (en) | 1991-04-05 |
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