JPH0188039U - - Google Patents
Info
- Publication number
- JPH0188039U JPH0188039U JP18495687U JP18495687U JPH0188039U JP H0188039 U JPH0188039 U JP H0188039U JP 18495687 U JP18495687 U JP 18495687U JP 18495687 U JP18495687 U JP 18495687U JP H0188039 U JPH0188039 U JP H0188039U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- compression ratio
- average value
- pressure
- combustion engine
- 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
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図はこの考案の構成を示すクレーム対応図
、第２図は低圧縮比状態および高圧縮比状態にお
ける筒内圧力を示すインジケータ線図、第３図は
この考案の一実施例を示す構成説明図、第４図は
そのコントロールユニツトの構成説明図、第５図
はこの実施例における圧縮比異常検出プログラム
を示すフローチヤートである。
１……内燃機関、２……筒内圧センサ、３……
平均値演算手段、４……偏差検出手段、５……判
別手段。
Fig. 1 is a claim correspondence diagram showing the configuration of this invention, Fig. 2 is an indicator diagram showing in-cylinder pressure in a low compression ratio state and a high compression ratio state, and Fig. 3 is a configuration showing an embodiment of this invention. FIG. 4 is an explanatory diagram of the configuration of the control unit, and FIG. 5 is a flowchart showing a compression ratio abnormality detection program in this embodiment. 1... Internal combustion engine, 2... Cylinder pressure sensor, 3...
Average value calculation means, 4...deviation detection means, 5...discrimination means.
Claims (1)
内燃機関において、各気筒毎に配設されて各筒内
圧力をそれぞれ検出する筒内圧センサと、点火直
前もしくは燃焼終了後に設定される所定クランク
角における筒内圧力の全気筒の平均値を演算する
手段と、各気筒の上記所定クランク角における筒
内圧力を上記平均値と比較して偏差を求める手段
と、この偏差を基準値と比較して圧縮比の異常、
正常を判別する手段とを備えてなる可変圧縮比型
内燃機関の制御装置。 In a multi-cylinder internal combustion engine that is equipped with a variable compression ratio mechanism for each cylinder, there is an in-cylinder pressure sensor that is arranged for each cylinder to detect the pressure in each cylinder, and a predetermined crankshaft that is set just before ignition or after the end of combustion. means for calculating an average value of in-cylinder pressure for all cylinders at the specified crank angle; means for comparing the in-cylinder pressure of each cylinder at the predetermined crank angle with the average value to determine a deviation; Abnormal compression ratio,
A control device for a variable compression ratio internal combustion engine, comprising means for determining normality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18495687U JPH0188039U (en) | 1987-12-04 | 1987-12-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18495687U JPH0188039U (en) | 1987-12-04 | 1987-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0188039U true JPH0188039U (en) | 1989-06-09 |
Family
ID=31476289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18495687U Pending JPH0188039U (en) | 1987-12-04 | 1987-12-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0188039U (en) |
-
1987
- 1987-12-04 JP JP18495687U patent/JPH0188039U/ja active Pending
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