JPS6024822U

JPS6024822U - Diesel engine with supercharger

Info

Publication number: JPS6024822U
Application number: JP11686583U
Authority: JP
Inventors: 中原　光治; 石田　富雄; 博石田; 吉田　吉孝; 有海　常夫
Original assignee: ダイハツ工業株式会社
Priority date: 1983-07-26
Filing date: 1983-07-26
Publication date: 1985-02-20
Also published as: JPS6246817Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示すシステム説明図である。１・・・給気系路、２・・・過給機、６・・・排気系路
、１３…給気バイパス路、１４…コントロールバルブ、
１５・・・弁体、１６・・・メインダイヤフラム機構、
１７・・・サブダイヤフラム機構、１８・・・負圧供給
手段、１９・・・メインダイヤフラム、２２・・・メイ
ンスプリング、２４・・・サブダイヤフラム、２５・・
・負圧導入室、２６・・・サブスプリング。The drawing is a system explanatory diagram showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Air supply system path, 2...Supercharger, 6...Exhaust system path, 13...Air supply bypass path, 14...Control valve,
15... Valve body, 16... Main diaphragm mechanism,
17... Sub diaphragm mechanism, 18... Negative pressure supply means, 19... Main diaphragm, 22... Main spring, 24... Sub diaphragm, 25...
・Negative pressure introduction chamber, 26...sub spring.

Claims

[Scope of utility model registration request]

A diesel engine equipped with a supercharger in which the downstream part of the air supply system from the supercharger is connected to the exhaust system via an air supply bypass, and this air supply bypass is opened and closed by a control valve. The control valve has a valve body provided in the air supply bypass passage and a main diaphragm that supports the valve body, and the supercharging pressure acting on one side of the main diaphragm acts on the other side of the main diaphragm. a main diaphragm mechanism that deflects the main diaphragm to shift the valve body from a closed position to an open position when the biasing force of the spring is overcome; and a sub-system that sandwiches the main spring between the main diaphragm and the main diaphragm; A sub diaphragm mechanism comprising a diaphragm, a negative pressure introduction chamber provided on the back side of the sub diaphragm, and a sub spring that presses the sub diaphragm in a direction in which the main spring contracts in the negative pressure introduction chamber;
A supercharger equipped with a negative pressure supply means which guides negative pressure into the negative pressure introducing chamber in a partial load region of the engine to pull back the sub diaphragm in the direction in which the main spring extends. diesel engine.