JPH0180638U - - Google Patents
Info
- Publication number
- JPH0180638U JPH0180638U JP1987176712U JP17671287U JPH0180638U JP H0180638 U JPH0180638 U JP H0180638U JP 1987176712 U JP1987176712 U JP 1987176712U JP 17671287 U JP17671287 U JP 17671287U JP H0180638 U JPH0180638 U JP H0180638U
- Authority
- JP
- Japan
- Prior art keywords
- deviation
- engine output
- exhaust
- decrease
- input signal
- 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 3
- 230000005856 abnormality Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Combined Controls Of Internal Combustion Engines (AREA)
Description
第１図は本考案の排気温度診断装置を備えたデ
イーゼル機関の模式図、第２図は機関出力の増加
に伴う排気温度の標準値、実測値の変化を示す図
、第３図は機関出力増分と測定温度増分の関係を
標準温度増分と共に示す図、第４図は上記排気温
度診断装置の処理の流れを示すフローチヤートで
ある。
１…デイーゼル機関、２…ラツク目盛センサ、
３，３…排気温度センサ、４…コンピユータ、５
…表示装置。
Figure 1 is a schematic diagram of a diesel engine equipped with the exhaust temperature diagnostic device of the present invention, Figure 2 is a diagram showing changes in the standard value and actual value of exhaust temperature as the engine output increases, and Figure 3 is the engine output. FIG. 4 is a diagram showing the relationship between the increment and the measured temperature increment together with the standard temperature increment, and is a flowchart showing the process flow of the exhaust gas temperature diagnosis device. 1... Diesel engine, 2... Easy scale sensor,
3, 3...Exhaust temperature sensor, 4...Computer, 5
...display device.
Claims (1)
からの入力信号に基づいて、所定時間における機
関出力の増減分に対応する排気温度の標準増減分
を求める標準温度増分算出手段と、内燃機関の各
気筒に設けられた排気温度センサからの入力信号
に基づいて、上記所定時間における各気筒の排気
温度の増減分を実測し、この実測した測定増減分
から上記標準増減分を減算して偏差を求める偏差
算出手段と、この偏差算出手段で算出された偏差
が所定の許容値以内であるか否かを判別する偏差
判別手段とを備えて、上記偏差判別手段の判別結
果によつて、各気筒の燃料系、燃焼系、吸排気系
等の異常に関する情報を得るようにしたことを特
徴とする内燃機関の排気温度診断装置。 standard temperature increment calculation means for calculating a standard increase/decrease in exhaust temperature corresponding to an increase/decrease in engine output over a predetermined time based on an input signal from an engine output sensor that detects the engine output of the internal combustion engine; Based on the input signal from the exhaust temperature sensor installed in and a deviation determining means for determining whether or not the deviation calculated by the deviation calculating means is within a predetermined tolerance value, the fuel system of each cylinder is determined based on the determination result of the deviation determining means. An exhaust gas temperature diagnostic device for an internal combustion engine, characterized in that it obtains information regarding abnormalities in a combustion system, an intake and exhaust system, etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176712U JPH0180638U (en) | 1987-11-19 | 1987-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176712U JPH0180638U (en) | 1987-11-19 | 1987-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0180638U true JPH0180638U (en) | 1989-05-30 |
Family
ID=31468422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176712U Pending JPH0180638U (en) | 1987-11-19 | 1987-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0180638U (en) |
-
1987
- 1987-11-19 JP JP1987176712U patent/JPH0180638U/ja active Pending