JPH02128805U

JPH02128805U -

Info

Publication number: JPH02128805U
Application number: JP3892589U
Authority: JP
Priority date: 1989-03-31
Filing date: 1989-03-31
Publication date: 1990-10-24

Description

[Brief explanation of drawings]

第１図乃至第８図は本考案の一実施例を示すも
のである。第１図ａは圧力作動アクチユエータ装
置の縦断面図である。第１図ｂは圧力作動アクチ
ユエータ装置に負圧及び正圧を導入した際の同縦
断面図である。第２図は過給機付エンジンの吸排
気系及び燃料制御装置の構成図である。第３図は
各弁及びその切換用ソレノイド三方弁の接続関係
を示すブロツク図である。第４図及び第５図は弁
制御プログラムの流れを示すフローチヤートであ
る。第６図は弁制御マツプを示すグラフである。
第７図は過給機付エンジンの概略構成を示す説明
図である。第８図は差圧検出弁の縦断面図である
。２２３は圧力作動アクチユエータ装置、２５０
はダイアフラム、２５１は負圧チヤンバ、２５２
は正圧チヤンバ、２５３はケーシング、２５５は
スプリング（付勢部材）、２５７は作動ロツド、
２５８はベローズである。 1 to 8 show an embodiment of the present invention. FIG. 1a is a longitudinal cross-sectional view of a pressure-operated actuator device. FIG. 1b is a longitudinal sectional view of the pressure-operated actuator device when negative pressure and positive pressure are introduced. FIG. 2 is a configuration diagram of the intake and exhaust system and fuel control device of the supercharged engine. FIG. 3 is a block diagram showing the connection relationship between each valve and its switching solenoid three-way valve. 4 and 5 are flowcharts showing the flow of the valve control program. FIG. 6 is a graph showing a valve control map.
FIG. 7 is an explanatory diagram showing a schematic configuration of a supercharged engine. FIG. 8 is a longitudinal sectional view of the differential pressure detection valve. 223 is a pressure actuator device, 250
is a diaphragm, 251 is a negative pressure chamber, 252
is a positive pressure chamber, 253 is a casing, 255 is a spring (biasing member), 257 is an actuation rod,
258 is a bellows.

Claims

[Claims for Utility Model Registration] The inside of the casing is divided into two chambers by a diaphragm, and one end of the actuating rod is connected to the diaphragm and projects outside the casing through one chamber. In a pressure-operated actuator device that is driven by displacement of a diaphragm due to pressure fluctuations in two chambers, one chamber through which the actuating rod passes is a negative pressure chamber, the other chamber is a positive pressure chamber, and A bellows is extendably provided in the negative pressure chamber between the casing penetration portion of the actuation rod and the diaphragm, with a radial distance between the actuation rod and the diaphragm, and sealing the casing penetration portion of the actuation rod. A pressure-operated actuator device characterized in that the pressure-operated actuator device is provided with biasing means for biasing the diaphragm toward the positive pressure chamber.