JPS62171639U

JPS62171639U -

Info

Publication number: JPS62171639U
Application number: JP5958486U
Authority: JP
Priority date: 1986-04-22
Filing date: 1986-04-22
Publication date: 1987-10-30

Description

[Brief explanation of drawings]

第１図は本考案のクレーム対応図、第２図は本
考案の一実施例を示す構成図、第３図及び第４図
は夫々同上のフローチヤート、第５図は同上の作
用説明図、第６図はアイドル制御弁の一例を示す
スロツトルチヤンバの断面図である。３……アイドル制御弁、１１……ＣＰＵ、３０
……位相反転ドライバー。 Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a configuration diagram showing an embodiment of the present invention, Figs. 3 and 4 are flowcharts of the same, respectively, and Fig. 5 is an explanatory diagram of the operation of the same, FIG. 6 is a sectional view of a throttle chamber showing an example of an idle control valve. 3...Idle control valve, 11...CPU, 30
...Phase reversal driver.

Claims

[Scope of utility model registration request]

an idle control valve that is installed in an auxiliary air passage that bypasses the throttle valve and controls the intake flow rate; a basic control value setting means that sets a basic control value of the idle control valve that is set based on the engine operating state; Feedback correction amount setting means for setting a feedback correction amount by comparing a target idle rotation speed set based on the operating state and an actual idle rotation speed, and calculating a control value based on the basic control value and the feedback correction amount. and a control means for controlling the idle control valve based on the calculated control value. and determining means for determining an abnormality in an idle rotation speed control system when the read feedback correction amount is maintained at a substantially constant value for a predetermined period of time. Self-diagnosis device for numerical control equipment.