JPH0411239U - - Google Patents
Info
- Publication number
- JPH0411239U JPH0411239U JP5026690U JP5026690U JPH0411239U JP H0411239 U JPH0411239 U JP H0411239U JP 5026690 U JP5026690 U JP 5026690U JP 5026690 U JP5026690 U JP 5026690U JP H0411239 U JPH0411239 U JP H0411239U
- Authority
- JP
- Japan
- Prior art keywords
- water temperature
- temperature sensor
- engine
- output voltage
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 3
- 239000000446 fuel Substances 0.000 claims 2
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
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システム図、第
３図は制御内容を示すフローチヤート、第４図は
水温センサの異常判定の範囲を示す図、第５図は
本実施例の疑似水温の温度上昇特性を示す図、第
６図は従来の疑似水温と冷却水温との温度上昇特
性を示す図である。
１……水温センサ、５……マイクロコンピユー
タ。
Figure 1 is a functional block diagram showing the configuration of the present invention.
Fig. 2 is a system diagram showing an embodiment of the present invention, Fig. 3 is a flowchart showing control details, Fig. 4 is a diagram showing the range of abnormality determination of the water temperature sensor, and Fig. 5 is a pseudo model of this embodiment. FIG. 6 is a diagram showing the temperature rise characteristics of the conventional simulated water temperature and the cooling water temperature. 1...Water temperature sensor, 5...Microcomputer.
Claims (1)
相当するパルス巾のパルス信号に基づいて燃料噴
射弁が駆動される機関の、冷却水通路に水温セン
サを臨ませてその出力電圧に基づいて水温を検出
する冷却水温検出装置において、 水温センサの出力電圧を所定の上限値及び下限
値と比較して所定の範囲外のときに異常を検出す
る水温センサ異常検出手段と、 水温センサの異常検出時に、機関始動時からの
前記パルス信号のパルス巾の積算値を演算する演
算手段と、 該演算手段の積算値に基づいて疑似水温を設定
する疑似水温設定手段と、 を設けたことを特徴とする内燃機関の冷却水温検
出装置。[Scope of Claim for Utility Model Registration] A water temperature sensor is placed in the cooling water passage of an engine in which the fuel injection valve is driven based on a pulse signal with a pulse width corresponding to the fuel injection amount calculated according to the engine operating state. In the cooling water temperature detection device that detects the water temperature based on the output voltage of the water temperature sensor, the water temperature sensor abnormality detection means compares the output voltage of the water temperature sensor with predetermined upper and lower limit values and detects an abnormality when the output voltage is outside the predetermined range. and a calculation means for calculating an integrated value of the pulse width of the pulse signal from the time of starting the engine when an abnormality is detected in the water temperature sensor; and a pseudo water temperature setting means for setting a pseudo water temperature based on the integrated value of the calculation means. A cooling water temperature detection device for an internal combustion engine, characterized in that it is provided with:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5026690U JPH0411239U (en) | 1990-05-16 | 1990-05-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5026690U JPH0411239U (en) | 1990-05-16 | 1990-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0411239U true JPH0411239U (en) | 1992-01-30 |
Family
ID=31568668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5026690U Pending JPH0411239U (en) | 1990-05-16 | 1990-05-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411239U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08135492A (en) * | 1994-11-04 | 1996-05-28 | Honda Motor Co Ltd | Air-fuel ratio control device for internal combustion engine |
| JP2007182809A (en) * | 2006-01-06 | 2007-07-19 | Mitsubishi Motors Corp | Idle rotation speed control system of internal combustion engine |
-
1990
- 1990-05-16 JP JP5026690U patent/JPH0411239U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08135492A (en) * | 1994-11-04 | 1996-05-28 | Honda Motor Co Ltd | Air-fuel ratio control device for internal combustion engine |
| 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 |
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