JPS6295140U

JPS6295140U -

Info

Publication number: JPS6295140U
Application number: JP18601585U
Authority: JP
Priority date: 1985-12-04
Filing date: 1985-12-04
Publication date: 1987-06-17

Description

[Brief explanation of the drawing]

第１〜３図はこの考案の第１実施例を示し、第
１図はウエイストゲート弁とアクチユエータとの
概略図、第２〜３図はそれぞれ第１実施例の変形
例を示すウエイストゲート弁の概略図である。第
４図はこの考案の第２実施例を示すウエイストゲ
ート弁とアクチユエータとの概略図である。第５
図はこの考案による車両用過給機の制御装置の概
略図である。第６図は圧力と車速との関係を示す
図である。第７図は従来の技術を示す車両用過給
機の制御装置の概略図である。第８図はウエイス
トゲート弁とアクチユエータとの概略図である。
第９図は圧力と車速との関係を示す図である。図において、２は排気タービン式の過給機、４
は吸気通路、６は排気通路、８はコンプレツサ、
１０はタービン、１２は内燃機関、１４はバイパ
ス通路、１６は入口、１８は出口、２０はウエイ
ストゲート弁、２２はアクチユエータ、２４はダ
イヤフラム、２６は圧力室、２８はロツド、３０
は閉止バネ、５２は導入通路、５４は切換弁、５
６は第１通路、５８は第２通路、６０は車速セン
サ、６２は制御部、６４，６６，６８は断面積規
制部材、７０は第１閉止バネ、７２は第２閉止バ
ネである。 1 to 3 show a first embodiment of this invention, FIG. 1 is a schematic diagram of a waste gate valve and an actuator, and FIGS. 2 to 3 show a modification of the first embodiment of the waste gate valve. It is a schematic diagram. FIG. 4 is a schematic diagram of a wastegate valve and an actuator showing a second embodiment of this invention. Fifth
The figure is a schematic diagram of a control device for a vehicle supercharger according to this invention. FIG. 6 is a diagram showing the relationship between pressure and vehicle speed. FIG. 7 is a schematic diagram of a control device for a vehicle supercharger showing a conventional technique. FIG. 8 is a schematic diagram of the wastegate valve and actuator.
FIG. 9 is a diagram showing the relationship between pressure and vehicle speed. In the figure, 2 is an exhaust turbine type supercharger, 4
is an intake passage, 6 is an exhaust passage, 8 is a compressor,
10 is a turbine, 12 is an internal combustion engine, 14 is a bypass passage, 16 is an inlet, 18 is an outlet, 20 is a wastegate valve, 22 is an actuator, 24 is a diaphragm, 26 is a pressure chamber, 28 is a rod, 30
5 is a closing spring, 52 is an introduction passage, 54 is a switching valve, 5
6 is a first passage, 58 is a second passage, 60 is a vehicle speed sensor, 62 is a control section, 64, 66, 68 are cross-sectional area regulating members, 70 is a first closing spring, and 72 is a second closing spring.

Claims

[Claims for Utility Model Registration] 1. Control of a vehicle supercharger in which a wastegate valve is provided in a bypass passage that bypasses a supercharger turbine and communicates with an exhaust passage, and an actuator that opens and closes this wastegate valve is provided. 1. A control device for a vehicle supercharger, characterized in that the device is provided with a supercharging pressure characteristic maintenance mechanism to maintain the supercharging pressure characteristic as required during the opening operation of the waste gate valve. 2. The supercharging pressure characteristic maintenance mechanism is a cross-sectional area regulating member provided in the waste gate valve that is located within the bypass passage and regulates the cross-sectional area of the entrance of the bypass passage to a required value during the opening operation of the waste gate valve. A control device for a supercharger for a vehicle according to claim 1 of a certain utility model registration claim. 3. The supercharging pressure characteristic maintenance mechanism includes a plurality of actuators provided in the actuator that sequentially apply a closing elastic force according to the opening degree of the wastegate valve during the opening operation of the wastegate valve to regulate the opening degree to a required value. A control device for a vehicle supercharger according to claim 1, which is a pressing member.