JPH01148039U - - Google Patents
Info
- Publication number
- JPH01148039U JPH01148039U JP4333288U JP4333288U JPH01148039U JP H01148039 U JPH01148039 U JP H01148039U JP 4333288 U JP4333288 U JP 4333288U JP 4333288 U JP4333288 U JP 4333288U JP H01148039 U JPH01148039 U JP H01148039U
- Authority
- JP
- Japan
- Prior art keywords
- compression ratio
- knocking
- ignition timing
- detection means
- 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.)
- Granted
Links
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005856 abnormality Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Electrical Control Of Ignition Timing (AREA)
- 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図はこの考案の一実施例を示す構成説明図
、第３図は圧縮比可変機構の一実施例を示す断面
図、第４図はこの圧縮比可変機構の作動特性図、
第５図は上記実施例における制御プログラムを示
すフローチヤート、第６図は圧縮比と点火時期と
の関係を示す特性図、第７図はこの実施例におけ
る基準点火時期特性を示す特性図である。
１……ノツキング検出手段、２……ＭＢＴ制御
手段、３……ノツキング制御手段、４……圧縮比
検出手段、５……異常判別手段、６……点火装置
。
Fig. 1 is a claim correspondence diagram showing the structure of this invention, Fig. 2 is an explanatory view of the structure showing one embodiment of this invention, Fig. 3 is a sectional view showing one embodiment of a variable compression ratio mechanism, and Fig. 4 is the operating characteristic diagram of this variable compression ratio mechanism,
FIG. 5 is a flowchart showing the control program in the above embodiment, FIG. 6 is a characteristic diagram showing the relationship between compression ratio and ignition timing, and FIG. 7 is a characteristic diagram showing the reference ignition timing characteristics in this embodiment. . DESCRIPTION OF SYMBOLS 1...Knocking detection means, 2...MBT control means, 3...Knocking control means, 4...Compression ratio detection means, 5...Abnormality determination means, 6...Ignition device.
Claims (1)
可変圧縮比型内燃機関において、機関のノツキン
グの有無を検出するノツキング検出手段と、ノツ
キング無しのときに選択され、かつ点火時期をＭ
ＢＴ点に制御するＭＢＴ制御手段と、ノツキング
有りのときに選択され、かつ点火時期をノツキン
グ発生限界に制御するノツキング制御手段と、機
関の実際の点火時期を第１基準圧縮比に対応する
第１基準点火時期ならびに第２基準圧縮比に対応
する第２基準点火時期と比較して、高負荷条件下
での実際の圧縮比ならびに低負荷条件下での実際
の圧縮比を推定する圧縮比検出手段と、両圧縮比
の比較に基づき圧縮比制御の異常、正常を判別す
る異常判別手段とを備えてなる可変圧縮比型内燃
機関の故障検出装置。 In a variable compression ratio internal combustion engine in which the compression ratio is variably controlled according to engine operating conditions, there is provided a knocking detection means for detecting the presence or absence of knocking in the engine, and a knocking detection means that is selected when there is no knocking and that sets the ignition timing to M.
MBT control means for controlling the BT point to the BT point; knocking control means selected when knocking is present and controlling the ignition timing to the knocking generation limit; Compression ratio detection means for estimating an actual compression ratio under a high load condition and an actual compression ratio under a low load condition by comparing with a reference ignition timing and a second reference ignition timing corresponding to a second reference compression ratio. and abnormality determining means for determining whether compression ratio control is abnormal or normal based on a comparison of both compression ratios.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4333288U JPH0625647Y2 (en) | 1988-03-31 | 1988-03-31 | Variable compression ratio internal combustion engine failure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4333288U JPH0625647Y2 (en) | 1988-03-31 | 1988-03-31 | Variable compression ratio internal combustion engine failure detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01148039U true JPH01148039U (en) | 1989-10-13 |
| JPH0625647Y2 JPH0625647Y2 (en) | 1994-07-06 |
Family
ID=31269731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4333288U Expired - Lifetime JPH0625647Y2 (en) | 1988-03-31 | 1988-03-31 | Variable compression ratio internal combustion engine failure detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625647Y2 (en) |
-
1988
- 1988-03-31 JP JP4333288U patent/JPH0625647Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0625647Y2 (en) | 1994-07-06 |
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