JPH02139302U

JPH02139302U -

Info

Publication number: JPH02139302U
Application number: JP4780389U
Authority: JP
Priority date: 1989-04-24
Filing date: 1989-04-24
Publication date: 1990-11-21

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すものであり、第
１図は全体縦断側面図、第２図は第１図の−
線拡大断面図である。１…機関本体、５…機関弁としての吸気弁、５
ａ…弁軸部、５ｂ…弁体部、１０…スリーブ、１
２…駆動部材としてのリフタ、１３…空気圧室、
１６…ピストン、３０…加圧空気供給源、３１…
チエツク弁、３２…弁孔、３３…弁座、３４…孔
、３５…弁室、３６…ばね受け部材、３７…弁体
、３８…ばね、３９…連通路、４０…ストツパ。 The drawings show one embodiment of the present invention, and FIG. 1 is an overall vertical sectional side view, and FIG.
It is a line enlarged sectional view. 1... Engine body, 5... Intake valve as engine valve, 5
a...Valve stem part, 5b...Valve body part, 10...Sleeve, 1
2... Lifter as a driving member, 13... Pneumatic chamber,
16... Piston, 30... Pressurized air supply source, 31...
Check valve, 32... Valve hole, 33... Valve seat, 34... Hole, 35... Valve chamber, 36... Spring receiving member, 37... Valve body, 38... Spring, 39... Communication path, 40... Stopper.

Claims

[Scope of utility model registration request]

An engine valve consisting of a valve body provided at the tip of the valve stem and a drive member interlocked and connected to the rear end of the valve stem is supported in the engine body so as to be openable and closable, and the sleeve is fixed to the engine body. A piston that is slidably fitted into the valve shaft is fixed to the valve shaft, and an air pressure chamber is defined between the piston and the sleeve to exert a resilient force in the direction of closing the engine valve. Between the pneumatic chamber and the pressurized air supply source, a valve body having a hole in which a valve seat surrounding the opening edge of a valve hole communicating with the pressurized air supply source is formed at one axial end; a spring receiving member that closes the other end of the hole in the axial direction while forming a valve chamber that communicates with the pneumatic chamber between them; a spherical valve body that can be seated on the valve seat and is housed in the valve chamber; In a valve operating system for an internal combustion engine in which a check valve is provided with a spring interposed between a body and a spring receiving member, the spring receiving member of the check valve has a communication passage that communicates between the pneumatic chamber and the valve chamber. A valve operating system for an internal combustion engine, characterized in that an adjustable stopper is provided protruding from the valve element closer to the valve seat than the opening end to the valve chamber to restrict the retraction limit of the valve element.