JPS58151332U

JPS58151332U - Internal combustion engine idle speed feedback control device

Info

Publication number: JPS58151332U
Application number: JP4794782U
Authority: JP
Inventors: 俊平長谷川
Original assignee: 本田技研工業株式会社
Priority date: 1982-04-02
Filing date: 1982-04-02
Publication date: 1983-10-11

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

[Brief explanation of the drawing]

第１図は本考案のアイドル回転数フィードバック制御装
置の全体の構成図、第２図は第１図に示す電子コントロ
ールユニット（ＥＣＵ）内の電子回路の一例を示す回路
図及び第３図はクランキング状態の判別方法を説明する
図である。１・・・内燃エンジン、３・・・吸気通路（吸気管）、
５・・・絞り弁（スロットル弁）、６・・・制御弁、６
ａ・・・ソレノイド、６ｂ・・・弁、８・・・空気通路
、９・・・電子コントロールユニット（ＥＣＵ）、１４
・・・回転数センサ、１６・・・スタータスイッチ、９
０５・・・比較回路、９０６・・・ＭＥＣＲ値メモリ、
９０８・・・レベル変換回路、９０９・・・ＮＡＮＤ回
路、９１０・・・補助空気遮断手段（ＡＮＤ回路）。FIG. 1 is an overall configuration diagram of the idle speed feedback control device of the present invention, FIG. 2 is a circuit diagram showing an example of an electronic circuit in the electronic control unit (ECU) shown in FIG. 1, and FIG. FIG. 3 is a diagram illustrating a method for determining a ranking state. 1... Internal combustion engine, 3... Intake passage (intake pipe),
5... Throttle valve (throttle valve), 6... Control valve, 6
a...Solenoid, 6b...Valve, 8...Air passage, 9...Electronic control unit (ECU), 14
... Rotation speed sensor, 16 ... Starter switch, 9
05... Comparison circuit, 906... MECR value memory,
908... Level conversion circuit, 909... NAND circuit, 910... Auxiliary air cutoff means (AND circuit).

Claims

[Scope of utility model registration request]

A control valve that adjusts the amount of intake air supplied as auxiliary air to the engine through an air passage that opens downstream of the throttle valve in the intake passage of an internal combustion engine and communicates with the atmosphere is connected to the actual engine speed at idle and the target engine speed. In the idle rotation speed feedback control device that performs feedback control according to the difference from the rotation speed, cranking state detection means detects a cranking state at the time of startup and outputs a detection signal;
An idle rotation speed feedback control device comprising: auxiliary air cutoff means for stopping the operation of the control valve and bringing the control valve into a fully closed state when the detection signal is input.