JPH03106131U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は過給圧制御装置の全体図、第２図はス
ロツトル弁、バイパス制御弁、吸気遮断弁の空気
流通面積を示す線図、第３図は吸気遮断弁を制御
するためのフローチヤート、第４図は吸気遮断弁
を制御するための別の実施例を示すフローチヤー
ト、第５図は吸気遮断弁を制御するための更に別
の実施例を示すフローチヤート、第６図は過給圧
制御装置の別の実施例を示す全体図、第７図はス
ロツトル弁、バイパス制御弁、吸気遮断弁の空気
流通面積を示す線図、第８図は目標ステツプ位置
を示す線図、第９図はステツプモータを制御する
ためのフローチヤートである。 ６……吸気通路、１０……機械式過給機、１２
……スロツトル弁、１３……吸気遮断弁、１４…
…バイパス通路、１５……バイパス制御弁。 Fig. 1 is an overall diagram of the boost pressure control device, Fig. 2 is a diagram showing the air circulation area of the throttle valve, bypass control valve, and intake cutoff valve, and Fig. 3 is a flowchart for controlling the intake cutoff valve. , FIG. 4 is a flowchart showing another embodiment for controlling the intake cutoff valve, FIG. 5 is a flowchart showing still another embodiment for controlling the intake cutoff valve, and FIG. 6 is a flowchart showing another embodiment for controlling the intake cutoff valve. An overall view showing another embodiment of the pressure control device; FIG. 7 is a diagram showing the air circulation area of the throttle valve, bypass control valve, and intake cutoff valve; FIG. 8 is a diagram showing the target step position; The figure is a flowchart for controlling the step motor. 6... Intake passage, 10... Mechanical supercharger, 12
...Throttle valve, 13...Intake cutoff valve, 14...
...Bypass passage, 15...Bypass control valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] スロツトル弁上流の吸気通路内に機関駆動の機
械式過給機を配置すると共に機械式過給機上流の
吸気通路内に吸気遮断弁を配置し、吸気遮断弁と
機械式過給機間の吸気通路からバイパス通路を分
岐して該バイパス通路を機械式過給機とスロツト
ル弁間の吸気通路に連結し、該バイパス通路内に
バイパス制御弁を設けて減速運転時にバイパス制
御弁を開弁せしめると共に吸気遮断弁を閉弁せし
めるようにした内燃機関において、吸気遮断弁閉
弁時の吸気遮断弁の空気流通面積をスロツトル弁
がアイドリング開度であるときにスロツトル弁を
通過する空気の流通面積よりも大きくした内燃機
関の吸気制御装置。 An engine-driven mechanical supercharger is placed in the intake passage upstream of the throttle valve, and an intake cutoff valve is placed in the intake passage upstream of the mechanical supercharger. A bypass passage is branched from the passage, the bypass passage is connected to an intake passage between the mechanical supercharger and the throttle valve, a bypass control valve is provided in the bypass passage, and the bypass control valve is opened during deceleration operation. In an internal combustion engine in which the intake cutoff valve is closed, the air circulation area of the intake cutoff valve when the intake cutoff valve is closed is larger than the air circulation area of the intake cutoff valve when the throttle valve is at its idling opening. An enlarged intake control device for an internal combustion engine.