JPH02149840U

JPH02149840U -

Info

Publication number: JPH02149840U
Application number: JP5965289U
Authority: JP
Priority date: 1989-05-25
Filing date: 1989-05-25
Publication date: 1990-12-21
Anticipated expiration: 2004-05-25
Also published as: JPH0720359Y2

Description

[Brief explanation of drawings]

第１Ａ図及び第１Ｂ図はこの考案の構成を示す
図。第２図はこの考案の実施例の構成を示す図。
第３図から第９図はこの考案の実施例の作動を説
明するフローチヤート。第１０図から第１４図は
この考案の実施例における各減速状態での作動を
説明するタイミング図。１０……エンジン本体、１２……吸気管、１４
……気化器、１６……スロツトル弁、１８……ス
ロー系通路、０……スローカツト電磁弁、２１…
…スロツトル弁位置制御レバー、２２……スロツ
トル弁制御アクチユエータ、２４，２６……ダイ
ヤフラム、３０，３６……ダイヤフラム室、３２
，３４……スプリング、４０，４２……電磁切弁
、４４……負圧ユニオン、５０……制御回路、５
２……回転数センサ、５４……水温センサ、５６
……車速センサ、６２……アイドルスイツチ、６
３……吸入空気温度センサ。 FIG. 1A and FIG. 1B are diagrams showing the configuration of this invention. FIG. 2 is a diagram showing the configuration of an embodiment of this invention.
3 to 9 are flowcharts explaining the operation of the embodiment of this invention. 10 to 14 are timing diagrams illustrating the operation in each deceleration state in the embodiment of this invention. 10...Engine body, 12...Intake pipe, 14
... Carburetor, 16 ... Throttle valve, 18 ... Slow system passage, 0 ... Slow cut solenoid valve, 21 ...
...Throttle valve position control lever, 22...Throttle valve control actuator, 24, 26...Diaphragm, 30, 36...Diaphragm chamber, 32
, 34... Spring, 40, 42... Solenoid valve, 44... Negative pressure union, 50... Control circuit, 5
2... Rotation speed sensor, 54... Water temperature sensor, 56
... Vehicle speed sensor, 62 ... Idle switch, 6
3...Intake air temperature sensor.

Claims

[Scope of Claim for Utility Model Registration] 1. A throttle valve opening control device during deceleration of an internal combustion engine, comprising the following components, which controls the opening of the throttle valve during deceleration operation in a direction closer to closing than the normal opening. Throttle valve opening control means; Deceleration state detection means for detecting a deceleration state in which the throttle valve opening is controlled by the throttle valve opening control means; Identifying the end point of the throttle closing operation as the end point of the previous throttle valve closing action. Throttle valve closing operation end point identification means; time setting means for setting a throttle valve operation prohibition time range as a time range before a predetermined period of time has elapsed from the end of the previous throttle valve closing action; Throttle valve closing operation prohibiting means for prohibiting throttle valve closing operation in a time range. 2 Throttle valve opening control device during deceleration of an internal combustion engine, comprising the following components: Throttle valve opening control means for controlling the opening of the throttle valve during deceleration operation in a direction closer to closing than the normal opening; Throttle A deceleration state detection means for detecting a deceleration state in which the throttle valve opening is controlled by the valve opening control means; a time setting means for identifying the start point of the current closing operation of the throttle valve; A time setting means for setting a time range in which the throttle valve operation is prohibited as a time range after a predetermined time has elapsed, and a throttle valve closing operation prohibiting means for prohibiting the throttle valve closing operation in the throttle valve closing operation prohibition area in the throttle valve closing area. .