JPH0243430U

JPH0243430U -

Info

Publication number: JPH0243430U
Application number: JP12315788U
Authority: JP
Priority date: 1988-09-20
Filing date: 1988-09-20
Publication date: 1990-03-26

Description

[Brief explanation of drawings]

第１図は本考案による過給圧切替弁の構成の一
例を示す断面図、第２図は従来の過給圧切替弁の
構成の一例を示す断面図である。１……過給圧切替弁、２……ハウジング、３…
…ガイドブツシユ、４……弁座、５……過給圧逃
し室、６……弁棒、７……弁体、８……ばね、９
……ダイヤフラム、１１……ダイヤフラムケース
、１２……ダイヤフラム室、１３……ポート、１
４……ストツパ部。 FIG. 1 is a sectional view showing an example of the structure of a boost pressure switching valve according to the present invention, and FIG. 2 is a sectional view showing an example of the structure of a conventional boost pressure switching valve. 1...Supercharging pressure switching valve, 2...Housing, 3...
...Guide bush, 4...Valve seat, 5...Supercharging pressure relief chamber, 6...Valve stem, 7...Valve body, 8...Spring, 9
...Diaphragm, 11...Diaphragm case, 12...Diaphragm chamber, 13...Port, 1
4...Stopper section.

Claims

[Claims for Utility Model Registration] A diaphragm chamber defined by a diaphragm, a valve body that interlocks with the diaphragm through a valve stem, and a valve body that holds the diaphragm and airtightly supports the valve stem, The valve housing includes a valve housing in which a relief chamber and a valve seat are formed, and a spring that biases the valve body toward the valve seat, and the control pressure supplied to the diaphragm chamber and the boost pressure in the boost passage are controlled. Relatedly, a supercharging pressure switching valve for a turbocharged internal combustion engine that opens against the spring force of the spring to release supercharging pressure in the supercharging passage to the supercharging pressure relief passage, A supercharging pressure switching valve for a turbocharged internal combustion engine, characterized in that the spring is provided within the valve housing.