JPH0158144U - - Google Patents
Info
- Publication number
- JPH0158144U JPH0158144U JP15274687U JP15274687U JPH0158144U JP H0158144 U JPH0158144 U JP H0158144U JP 15274687 U JP15274687 U JP 15274687U JP 15274687 U JP15274687 U JP 15274687U JP H0158144 U JPH0158144 U JP H0158144U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder pressure
- engine
- crank angle
- angle position
- detecting
- 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
Landscapes
- Measuring Fluid Pressure (AREA)
- Testing Of Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Description
第１図は本考案の構成を説明するためのブロツ
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図及び第４図は同上実施例の制
御フローチヤート、第５図は燃料カツト時の筒内
圧力波形図、第６図は燃料カツト時のブースト圧
と圧縮上死点筒内圧力との関係を示す図である。
１…筒内圧センサ、２…ノツキング処理回路、
３…筒内圧処理回路、４…ブースト圧センサ、５
…クランク角センサ、６…コントロールユニツト
。
FIG. 1 is a block diagram for explaining the configuration of the present invention, FIG. 2 is a hardware configuration diagram showing an embodiment of the present invention, FIGS. 3 and 4 are control flowcharts of the same embodiment, and FIG. FIG. 5 is a diagram showing the in-cylinder pressure waveform when fuel is cut off, and FIG. 6 is a diagram showing the relationship between boost pressure and compression top dead center in-cylinder pressure when fuel is cut off. 1...Cylinder pressure sensor, 2...Knocking processing circuit,
3... Cylinder pressure processing circuit, 4... Boost pressure sensor, 5
...Crank angle sensor, 6...Control unit.
Claims (1)
段と、エンジンのクランク角位置を検出するクラ
ンク角位置検出手段と、エンジンのブースト圧力
を検出するブースト圧力検出手段と、前記各検出
手段の検出出力に基づいて所定クランク角位置毎
に筒内圧力及びブースト圧力をサンプリングする
サンプリング手段と、燃料カツト時に予め定めた
クランク角位置での筒内圧力値及びブースト圧力
値に基づいて補正係数を設定する補正係数設定手
段と、燃料カツト時以外の筒内圧力検出値を前記
補正係数により補正する筒内圧力補正手段とを備
えたことを特徴とするエンジンの燃焼状態検出装
置。 Cylinder pressure detection means for detecting the cylinder pressure of the engine; crank angle position detection means for detecting the crank angle position of the engine; boost pressure detection means for detecting the boost pressure of the engine; and detection outputs of the respective detection means. sampling means for sampling the in-cylinder pressure and boost pressure at each predetermined crank angle position based on , and a correction coefficient for setting a correction coefficient based on the in-cylinder pressure value and boost pressure value at a predetermined crank angle position when fuel is cut. A combustion state detection device for an engine, comprising a coefficient setting means and an in-cylinder pressure correction means for correcting a cylinder pressure detection value other than when fuel is cut using the correction coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15274687U JPH0158144U (en) | 1987-10-07 | 1987-10-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15274687U JPH0158144U (en) | 1987-10-07 | 1987-10-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0158144U true JPH0158144U (en) | 1989-04-11 |
Family
ID=31427948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15274687U Pending JPH0158144U (en) | 1987-10-07 | 1987-10-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0158144U (en) |
-
1987
- 1987-10-07 JP JP15274687U patent/JPH0158144U/ja active Pending