JPS5990007U

JPS5990007U - Intake and exhaust valve operation stop mechanism for cylinder number control engine

Info

Publication number: JPS5990007U
Application number: JP18567182U
Authority: JP
Inventors: 誠之助原; 松本　泰郎; 豊又吉
Original assignee: 日産自動車株式会社
Priority date: 1982-12-07
Filing date: 1982-12-07
Publication date: 1984-06-18

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 the drawing]

一第１図はこの考案に係る吸排気弁作動停止機構を示す
シリンダヘッド部分の断面図、第２図はこの吸排気弁作
動停止機構を４気筒機関に適用した　−場合の油圧回路
を示す構成説明図である。１１・・・バルブ駆動カム、１２・・・吸排気弁、１４
・・・ブラケット、１７・・・ロッカアーム、２０・・
・レバー、２１・・田ツカアーム支持面、２５・・・油
圧アクチュエータ、２８・・・外筒部、２９・・・油溜
室、３０・・・内筒部、３２・・・油圧室、３３・・・
逆止弁、３４・・・逆止弁オープナ、４２・・・オイル
ポンプ、４３・・・油圧制御弁、４６・・・制御ユニッ
ト。Figure 1 is a sectional view of the cylinder head showing the intake and exhaust valve operation stop mechanism according to this invention, and Figure 2 shows the configuration of the hydraulic circuit when this intake and exhaust valve operation stop mechanism is applied to a four-cylinder engine. It is an explanatory diagram. 11... Valve drive cam, 12... Intake and exhaust valve, 14
...Bracket, 17...Rocker arm, 20...
- Lever, 21... Tatsuka arm support surface, 25... Hydraulic actuator, 28... Outer cylinder section, 29... Oil reservoir chamber, 30... Inner cylinder section, 32... Hydraulic chamber, 33 ...
Check valve, 34... Check valve opener, 42... Oil pump, 43... Hydraulic control valve, 46... Control unit.

Claims

[Scope of utility model registration request]

a rocker arm having one end in contact with a valve drive cam and the other end being linked to a canochlebe stem; a lever disposed approximately along the back surface of the rocker arm and having a rocker arm support surface with the back surface in fulcrum contact; and the valve of this lever. a bracket that supports one end of the lever; a hydraulic actuator that supports one end of the lever on the cam side and regulates the inclination of the lever by expanding and contracting; a hydraulic control valve that supplies a predetermined hydraulic pressure to the hydraulic actuator when the valve is activated, and releases the hydraulic pressure when the intake/exhaust valve operation is stopped, and the hydraulic actuator is slidably fitted into the bracket. an outer cylindrical part into which the lever is inserted and whose tip is connected to the lever; and an inner part that is slidably disposed within the outer cylindrical part and includes an oil reservoir chamber into which hydraulic pressure is introduced via the hydraulic pressure control valve. a cylindrical portion; a hydraulic chamber defined between the inner cylindrical portion and the tip of the outer cylindrical portion and communicating with the oil reservoir chamber via a check valve; and a hydraulic chamber slidably disposed within the oil reservoir chamber. and a check valve opener for pushing open the check valve in response to hydraulic pressure in the oil reservoir chamber.