JPS59100942U - Engine air-fuel ratio estimation device - Google Patents
Engine air-fuel ratio estimation deviceInfo
- Publication number
- JPS59100942U JPS59100942U JP19545482U JP19545482U JPS59100942U JP S59100942 U JPS59100942 U JP S59100942U JP 19545482 U JP19545482 U JP 19545482U JP 19545482 U JP19545482 U JP 19545482U JP S59100942 U JPS59100942 U JP S59100942U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- signal
- estimation device
- engine air
- intake pipe
- 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
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図Ａは従来の空燃比の検出に利用されてい′る酸素
センサの断面図、同図Ｂは同上の酸素センサの出力特性
を示す線図、第２図はエンジンの１シリンタ当りの吸入
空気量、燃料供給量と発生ト。
ルクとの関係を示す線図、第３図は、エンジン回転速度
の弯化に対する吸気管絶対圧力の応答特性を示す線図、
第４図Ａは本考案の一実施例を示す全体構成図、同図Ｂ
は同上実施例の要部構成図、第５図Ａは本考案の第二の
実施例を示す全体構成図、同ｎＢは同上実施例の要部構
成図である。
１・・・エツジ／本体、２・・・吸気管、７・・・吸気
管絶対圧力センサ、９・・・スロットルバルブ、１０・
・・スロットルバルブ全閉スイッチ、１６．３３・・・
コントロールコニット、１７．３４・・・表示回路、−
１０１・・・回転速度検出回路、１０２・・・微分回路
、 １０３・・・吸気管絶対圧力読取回路、１０４・・
・ディレィ回路、１０５・・・２分周回路、１０６・・
・位相差検出回路、Ｓｌ・・・点火信号、Ｓ２・・・吸
気管絶対圧力の信号、Ｓｌ、 Ｓ、・・・空燃比の推定
信号、ａ・・・Ｎの信号、 ｂ・・・４ゝの信号、ｃ・
・・Ｐムの信号、ｄ・・・ＰＢのディレィ信号。Figure 1A is a cross-sectional view of an oxygen sensor used for conventional air-fuel ratio detection, Figure B is a diagram showing the output characteristics of the same oxygen sensor, and Figure 2 is a diagram showing the intake per cylinder of the engine. Air volume, fuel supply volume and generation. Fig. 3 is a diagram showing the response characteristics of the intake pipe absolute pressure to the curve of the engine speed;
Figure 4A is an overall configuration diagram showing one embodiment of the present invention, Figure 4B
FIG. 5A is an overall configuration diagram showing a second embodiment of the present invention, and FIG. 5B is a configuration diagram of essential parts of the same embodiment. DESCRIPTION OF SYMBOLS 1... Edge/body, 2... Intake pipe, 7... Intake pipe absolute pressure sensor, 9... Throttle valve, 10...
...Throttle valve fully closed switch, 16.33...
Control unit, 17.34...Display circuit, -
101... Rotation speed detection circuit, 102... Differential circuit, 103... Intake pipe absolute pressure reading circuit, 104...
・Delay circuit, 105...2 frequency divider circuit, 106...
・Phase difference detection circuit, Sl...ignition signal, S2...signal of intake pipe absolute pressure, Sl, S,...estimation signal of air-fuel ratio, a...signal of N, b...4 Signal of ゝ, c・
...Pm signal, d...PB delay signal.
Claims (1)
の微分値汁全を演算する手段と、□吸気管絶対圧力ＰＢ
を検出する手段と、該吸気管絶対圧力Ｐ［３の検出信号
に吸気からトルク発生までの時間に相当する時間遅れを
もたせたディレィ信号をｄＮ 作るディレィ手段と、前記Ｃｌｔの信号とディレィ信号
との位相差を検出する手段と、前記両信号間の位相差に
対応する空燃比を推定する手段とを設けて構成したこと
を特徴とするエンジンの空燃比推定装置。[Scope of Claim for Utility Model Registration] A means for detecting the engine rotational speed N, and the rotational speed N
□ Intake pipe absolute pressure PB
means for detecting the intake pipe absolute pressure P[3, delay means for generating a delay signal with a time delay corresponding to the time from intake to torque generation, and the signal for the Clt and the delay signal. 1. An air-fuel ratio estimating device for an engine, comprising: means for detecting a phase difference between the two signals; and means for estimating an air-fuel ratio corresponding to the phase difference between the two signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19545482U JPS59100942U (en) | 1982-12-27 | 1982-12-27 | Engine air-fuel ratio estimation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19545482U JPS59100942U (en) | 1982-12-27 | 1982-12-27 | Engine air-fuel ratio estimation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59100942U true JPS59100942U (en) | 1984-07-07 |
Family
ID=30419755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19545482U Pending JPS59100942U (en) | 1982-12-27 | 1982-12-27 | Engine air-fuel ratio estimation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59100942U (en) |
-
1982
- 1982-12-27 JP JP19545482U patent/JPS59100942U/en active Pending
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