JPS59157506U

JPS59157506U - Engine valve timing control device

Info

Publication number: JPS59157506U
Application number: JP4286483U
Authority: JP
Inventors: 泰之森田; 博之小田; 益田　俊治
Original assignee: マツダ株式会社
Priority date: 1983-03-25
Filing date: 1983-03-25
Publication date: 1984-10-23

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]

第１図は本考案をデュアルインダクション方式の４気筒
エンジンに適用した実施例を示す一部破断乎面図、第２
図は第１図の実施例の縦断面図、第３図は第１図の実施
例の可変機構部分の拡大斜視図、第４図及び第５図は第
１図の実施例の可変機構のタットまわりを示す縦断面図
、第６図は第１図の実施例における吸、排気弁のバルブ
タイミングを示す説明図、第７図は本考案を通常の４気
筒エンジンに適用した実施例を示す概略図、第８図は第
６図の実施例における吸、排気弁のバルブタイミングを
示す説明図である。５ａ、　　５ｂ・・・吸気弁、５Ｓ・・・バルブステム
、６ａ。６ｂ・・・排気弁、９．　１０・・・カムシャフト、９
ａ。９ｂ、　　１０ａ、　　１０ｂ−・・力５ｂ面、１１−
・・第１可変機構、１２・・・第２可変機構、１３．１
３’・・・油圧タペット、１３ａ、　　１３’　ａ・・
・タペット受圧部、１３ｂ、１３’ｂ・・・タペット押
圧部、１４．１４′・・・回動部材、１４ａ、１４’ａ
・・・嵌挿孔、１５゜１５′・・・操作装置。Figure 1 is a partially cutaway view showing an embodiment in which the present invention is applied to a dual induction four-cylinder engine;
The figure is a vertical sectional view of the embodiment shown in Fig. 1, Fig. 3 is an enlarged perspective view of the variable mechanism portion of the embodiment shown in Fig. 1, and Figs. 4 and 5 are the variable mechanism of the embodiment shown in Fig. 1. Fig. 6 is an explanatory diagram showing the valve timing of the intake and exhaust valves in the embodiment shown in Fig. 1, and Fig. 7 shows an embodiment in which the present invention is applied to a normal four-cylinder engine. The schematic diagram, FIG. 8, is an explanatory diagram showing the valve timing of the intake and exhaust valves in the embodiment of FIG. 6. 5a, 5b...Intake valve, 5S...Valve stem, 6a. 6b...exhaust valve, 9. 10... camshaft, 9
a. 9b, 10a, 10b--force 5b plane, 11-
...First variable mechanism, 12...Second variable mechanism, 13.1
3'...Hydraulic tappet, 13a, 13'a...
・Tappet pressure receiving part, 13b, 13'b... Tappet pressing part, 14.14'... Rotating member, 14a, 14'a
...Insertion hole, 15°15'...Operating device.

Claims

[Scope of utility model registration request]

A tappet having a pressure receiving part that receives force from the cam surface of the cam shirt 1~, a pressing part that transmits the force from the cam surface to the valve stem, and a connecting part that connects the pressure receiving part and the suppressing part, and the tappet is slidable. An engine consisting of a rotating member that has a fitting hole that can be fitted freely and is rotatably supported around a camshaft, and an operating device that rotates this rotating member according to the operating state of the engine. 1. A valve timing control device for an engine, characterized in that a central portion of the connection portion of the tappet is thinner than both end portions.