JPS60167139U - Air-fuel ratio detection device for internal combustion engines - Google Patents
Air-fuel ratio detection device for internal combustion enginesInfo
- Publication number
- JPS60167139U JPS60167139U JP5468884U JP5468884U JPS60167139U JP S60167139 U JPS60167139 U JP S60167139U JP 5468884 U JP5468884 U JP 5468884U JP 5468884 U JP5468884 U JP 5468884U JP S60167139 U JPS60167139 U JP S60167139U
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- crank angle
- detection means
- fuel ratio
- air
- 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)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の構成を示すブロック図、第２図は本考
案の一実施例のハードウェア構成図、第３図は同上実施
例の燃料噴射量計算ルーチンを示すフローチャート、第
４図は同上実施例における空燃比フィードバック補正係
数αの設定ルーチンを示すフローチャートである。
１・・・コントロールユニット、２・・・クランク角セ
ンサ、３・・・圧力センサ。
第２図
−門？ −
し！Ｈ！ｉノFig. 1 is a block diagram showing the configuration of the present invention, Fig. 2 is a hardware configuration diagram of an embodiment of the invention, Fig. 3 is a flowchart showing the fuel injection amount calculation routine of the above embodiment, and Fig. 4 is a block diagram showing the configuration of the present invention. It is a flowchart which shows the setting routine of the air-fuel ratio feedback correction coefficient (alpha) in the example same as the above. 1... Control unit, 2... Crank angle sensor, 3... Pressure sensor. Figure 2 - Gate? - Shi! H! i-no
Claims (1)
角度検出手段と、 機関のシリンダ内の圧力を検出するシリンダ内圧力検出
手段と、 前記各検出手段により検出されたクランク角度とシリン
ダ内圧力とに基づいて、クランク角度に対するシリンダ
内圧力の勾配を演算する圧力勾配値演算手段と、 該演算手段によって演算された圧力勾配値が予め定めら
れた燃焼初期の圧力勾配値に達した時のクランク角度を
検出する燃焼初期クランク角度検出手段と、 同じく圧力勾配値が予め定められた燃焼末期の圧力勾配
値に達した時のクランク角度を検出する燃焼末期クラン
ク角度検出手段と、 前記各検出手段により求められた燃焼初期クランク角度
と燃焼末期クランク角度とに基づいて、燃焼初期から燃
焼末期までの燃焼期間を演算する燃焼期間演算手段と、 前記クランク角度検出手段により検出された機関回転数
と前記燃焼期間演算手段により求められた燃焼期間とに
基づいて、理論空燃比を実際の空燃比で除した値である
当量比の検出を缶う当量比検出手段と、 該当量比検出手段により検出された当量比に基づいて実
際の空燃比を演算する空燃比演算手段と、を備えたこと
を特徴とする内燃機関の空燃比検出装置。[Scope of Claim for Utility Model Registration] Crank angle detection means for detecting the crank angle and engine rotation speed of an engine; cylinder pressure detection means for detecting pressure within the cylinder of the engine; and crank detected by each of the above detection means. a pressure gradient value calculation means for calculating the gradient of the cylinder pressure with respect to the crank angle based on the angle and the cylinder pressure, and a pressure gradient value calculated by the calculation means to a predetermined pressure gradient value at the initial stage of combustion. An early combustion crank angle detection means for detecting the crank angle when the pressure gradient value reaches a predetermined combustion end stage crank angle detection means; Combustion period calculation means for calculating a combustion period from the beginning of combustion to the end of combustion based on the initial combustion crank angle and the final combustion crank angle determined by the respective detection means; and the engine detected by the crank angle detection means. an equivalence ratio detection means capable of detecting an equivalence ratio that is a value obtained by dividing a stoichiometric air-fuel ratio by an actual air-fuel ratio based on the rotational speed and the combustion period determined by the combustion period calculation means; An air-fuel ratio detection device for an internal combustion engine, comprising: air-fuel ratio calculation means for calculating an actual air-fuel ratio based on the equivalence ratio detected by the means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5468884U JPS60167139U (en) | 1984-04-16 | 1984-04-16 | Air-fuel ratio detection device for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5468884U JPS60167139U (en) | 1984-04-16 | 1984-04-16 | Air-fuel ratio detection device for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60167139U true JPS60167139U (en) | 1985-11-06 |
Family
ID=30576664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5468884U Pending JPS60167139U (en) | 1984-04-16 | 1984-04-16 | Air-fuel ratio detection device for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60167139U (en) |
-
1984
- 1984-04-16 JP JP5468884U patent/JPS60167139U/en active Pending
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