JPS62162362U

JPS62162362U -

Info

Publication number: JPS62162362U
Application number: JP4891586U
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デユー
テイ比設定のルーチンを示すフローチヤート、第
４図は同上実施例におけるマツプ指定ルーチンを
示すフローチヤート、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ＩＳＣｂｃｖ
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, FIG. 3 is a flowchart showing a duty ratio setting routine in the same embodiment, and FIG. 4 is a flowchart showing a map designation routine in the same embodiment. , Fig. 5 is a graph showing the map value of duty ratio ISCabv for air-fuel ratio correction during deceleration versus intake air flow rate Q, and Fig. 6 is a graph showing the duty ratio ISCbcv for negative pressure correction during deceleration.
FIG. 7 is a system diagram showing a conventional example, and FIG. 8 is a time chart showing 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 an auxiliary air passage that bypasses the intake valve, an engine operating state detection means that detects the operating state during engine deceleration, and an engine load detection means that detects the load applied to the engine from the outside. a first valve opening storage means that stores an opening of the air flow rate control valve that is set in advance using a predetermined engine operating state detected by the engine operating state detecting means as a parameter; A second valve opening is stored that is preset to a smaller opening than the valve opening stored in the first valve opening storage means using the same predetermined engine operating state as the parameter in the first valve opening storage means. and a first opening control that controls the opening of the air flow rate control valve based on the valve opening stored in the first valve opening storage means according to the detected operating state during engine deceleration. means, and when a reduction in engine load is detected by the engine load detection means while the first opening control means is controlling the opening of the air flow control valve, the first opening control means takes priority over the first opening control means. A deceleration control device for an internal combustion engine, comprising: second opening degree control means for controlling the opening degree of the air flow rate control valve based on the valve opening degree stored in the second valve opening degree storage means.