JPS62162363U

JPS62162363U -

Info

Publication number: JPS62162363U
Application number: JP4891686U
Authority: JP
Priority date: 1986-04-03
Filing date: 1986-04-03
Publication date: 1987-10-15

Description

[Brief explanation of the drawing]

第１図は本考案の構成を示すブロツク図、第２
図は本考案の一実施例のハードウエア構成を示す
ブロツク図、第３図は同上実施例におけるパルス
信号のデユーテイ比設定を示すフローチヤート、
第４図は第３図に示したフローチヤートの一部を
詳細にしたフローチヤート、第５図は減速時空燃
比補正のためのデユーテイ比ＩＳＣａｂｖの吸入
空気流量Ｑに対するマツプ値を示すグラフ、第６
図は減速時負圧補正のためのデユーテイ比ＩＳＶ
ｂｃｖの機関回転速度Ｎに対するマツプ値を示す
グラフ、第７図は従来例を示すシステム図、第８
図は同上従来例における問題点を示すためのタイ
ムチヤートである。３……アイドル制御弁、４……コントロールユ
ニツト、６……エアフローメータ、１０……アイ
ドルスイツチ、１１……ニユートラルスイツチ、
１２……クラツチスイツチ、１３……回転速度セ
ンサ、１４……水温センサ。 Figure 1 is a block diagram showing the configuration of the present invention, Figure 2 is a block diagram showing the configuration of the present invention.
The figure is a block diagram showing the hardware configuration of one embodiment of the present invention, and FIG. 3 is a flowchart showing the duty ratio setting of the pulse signal in the same embodiment.
FIG. 4 is a detailed flowchart of a part of the flowchart shown in FIG. 3, FIG. 5 is a graph showing map values of duty ratio ISCabv for air-fuel ratio correction during deceleration versus intake air flow rate Q,
The figure shows the duty ratio ISV for negative pressure correction during deceleration.
A graph showing the map value of bcv against the engine rotational speed N, Fig. 7 is a system diagram showing a conventional example, Fig. 8
The figure is a time chart showing the problems in the conventional example. 3... Idle control valve, 4... Control unit, 6... Air flow meter, 10... Idle switch, 11... Neutral switch,
12...Clutch switch, 13...Rotational speed sensor, 14...Water temperature sensor.

Claims

[Scope of utility model registration request]

An air flow control valve that controls the air flow rate in the auxiliary air passage that bypasses the intake throttle valve, an engine operating state detection means that detects the operating state during engine deceleration, including rotational speed, and detects the load applied to the engine from the outside. an engine load detection means for detecting a load, a valve opening setting means for setting an opening of the air flow control valve according to a detected engine operating state, and a reduction in load when a reduction in load is detected by the engine load detection means; a first valve opening degree correction means for correcting the valve opening degree set by the valve opening degree setting means to the closed side by a predetermined amount; and the valve opening degree is corrected by the valve opening degree correction means. a second valve opening correction means for correcting the valve opening set when an increase in engine rotational speed is detected later so that the correction amount toward the closing side increases sequentially; A deceleration control device for an internal combustion engine, comprising: valve opening degree control means for controlling the opening degree of the air flow control valve based on the corrected valve opening degree.