JPS6199650U - - Google Patents
Info
- Publication number
- JPS6199650U JPS6199650U JP18432384U JP18432384U JPS6199650U JP S6199650 U JPS6199650 U JP S6199650U JP 18432384 U JP18432384 U JP 18432384U JP 18432384 U JP18432384 U JP 18432384U JP S6199650 U JPS6199650 U JP S6199650U
- Authority
- JP
- Japan
- Prior art keywords
- water temperature
- abnormality
- self
- diagnosis
- change
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 5
- 238000004092 self-diagnosis Methods 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 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
- 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機能ブロツク図、
第２図は本考案の一実施例を示すハードウエア構
成図、第３図は同上の制御内容を示すフローチヤ
ート、第４図は従来例のフローチヤートである。
１…コントロールユニツト、２…マイクロコン
ピユータ、３…水温センサ、５…発光ダイオード
、１０…機関、１２…燃料噴射弁、１３…冷却水
通路。
Figure 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a hardware configuration diagram showing an embodiment of the present invention, FIG. 3 is a flowchart showing the control contents of the same, and FIG. 4 is a flowchart of a conventional example. DESCRIPTION OF SYMBOLS 1... Control unit, 2... Microcomputer, 3... Water temperature sensor, 5... Light emitting diode, 10... Engine, 12... Fuel injection valve, 13... Cooling water passage.
Claims (1)
号を発生する水温センサと、この水温センサから
の信号に基づいて水温を読込む水温読込み手段と
を備え、水温を検出して各種制御を行わせる内燃
機関の水温検出回路において、読込み水温の時間
当りの変化量を算出する変化量算出手段と、その
変化量を規定値と比較して異常の有無を判定する
判定手段と、異常有りの時に自己診断異常表示を
行う自己診断異常表示手段と、異常有りの時に前
回の水温に基づいて疑似水温を設定し制御部へ出
力する疑似水温設定手段とを設けたことを特徴と
する水温検出回路の自己診断及びフエイルセーフ
装置。 It is equipped with a water temperature sensor that faces the engine cooling water passage and generates an electrical signal according to the water temperature, and a water temperature reading means that reads the water temperature based on the signal from this water temperature sensor, and performs various controls by detecting the water temperature. In a water temperature detection circuit for an internal combustion engine, a change amount calculating means calculates the amount of change per hour in the read water temperature, a determining means compares the amount of change with a specified value to determine whether there is an abnormality, and when there is an abnormality, A water temperature detection circuit characterized by being provided with a self-diagnosis abnormality display means for displaying a self-diagnosis abnormality, and a pseudo water temperature setting means for setting a pseudo water temperature based on the previous water temperature and outputting it to a control section when there is an abnormality. Self-diagnosis and fail-safe equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18432384U JPS6199650U (en) | 1984-12-06 | 1984-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18432384U JPS6199650U (en) | 1984-12-06 | 1984-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6199650U true JPS6199650U (en) | 1986-06-25 |
Family
ID=30741808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18432384U Pending JPS6199650U (en) | 1984-12-06 | 1984-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6199650U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990001631A1 (en) * | 1988-07-29 | 1990-02-22 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fail-safe device for a temperature sensor |
| JPH03233159A (en) * | 1990-02-09 | 1991-10-17 | Toyota Motor Corp | Method of diagnosing abnormality of sensor |
| JP2007182809A (en) * | 2006-01-06 | 2007-07-19 | Mitsubishi Motors Corp | Idle rotation speed control system of internal combustion engine |
| JP2007291890A (en) * | 2006-04-21 | 2007-11-08 | Toyota Motor Corp | Internal combustion engine control device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144620A (en) * | 1982-02-23 | 1983-08-29 | Kogata Gas Reibou Gijutsu Kenkyu Kumiai | Exhaust gas heat recovery apparatus |
-
1984
- 1984-12-06 JP JP18432384U patent/JPS6199650U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144620A (en) * | 1982-02-23 | 1983-08-29 | Kogata Gas Reibou Gijutsu Kenkyu Kumiai | Exhaust gas heat recovery apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990001631A1 (en) * | 1988-07-29 | 1990-02-22 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Fail-safe device for a temperature sensor |
| JPH03233159A (en) * | 1990-02-09 | 1991-10-17 | Toyota Motor Corp | Method of diagnosing abnormality of sensor |
| JP2007182809A (en) * | 2006-01-06 | 2007-07-19 | Mitsubishi Motors Corp | Idle rotation speed control system of internal combustion engine |
| JP4605020B2 (en) * | 2006-01-06 | 2011-01-05 | 三菱自動車工業株式会社 | Idle speed control device for internal combustion engine |
| JP2007291890A (en) * | 2006-04-21 | 2007-11-08 | Toyota Motor Corp | Internal combustion engine control device |
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