JPS6077707U

JPS6077707U - 4-stroke internal combustion engine with DOHC valve mechanism

Info

Publication number: JPS6077707U
Application number: JP16985083U
Authority: JP
Inventors: 川田　恵一; 土岐　進
Original assignee: 本田技研工業株式会社
Priority date: 1983-11-01
Filing date: 1983-11-01
Publication date: 1985-05-30
Also published as: JPH0130564Y2

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]

図面は本考案の第１実施例を示すもので、第１図は本考
案装置を備えた動弁部分の平面図、第２図は、第１図■
−■線断面図、第３図は第１図■−■線断面図、第４図
はシリンダヘッドの平面図である。Ｃ・・・・・・カッタ、Ｈ・・・・・・シリンダヘッド
、１・・・・・・燃焼室、６，７・・・・・・弁支持部
、８，９・・・・・・動弁カム軸、１２，１３・・・・
・・軸受部、１２ａ、１３ａ・・・・・・軸受半部、２
６，２７・・・・・・ばね座面、３２，３３・・・・・
・内、外側締付ボルト、３４．３５・・・・・・内、外
側締付ボルト、３６，３７・・・・・・カッタ避は凹部
。！The drawings show the first embodiment of the present invention. Figure 1 is a plan view of the valve train section equipped with the device of the present invention, and Figure 2 is the same as Figure 1.
3 is a cross-sectional view taken along the line ■--■ in FIG. 1, and FIG. 4 is a plan view of the cylinder head. C... Cutter, H... Cylinder head, 1... Combustion chamber, 6, 7... Valve support part, 8, 9...・Valve train camshaft, 12, 13...
...Bearing part, 12a, 13a...Bearing half part, 2
6, 27... Spring bearing surface, 32, 33...
・Inner and outer tightening bolts, 34, 35... Inner and outer tightening bolts, 36, 37... Cutter recess is recessed. !

Claims

[Scope of utility model registration request]

The cylinder head is provided with intake and exhaust side valve support parts with the combustion chamber in between, and bearing parts are respectively provided above them, and the intake and exhaust valves are slidably supported on the valve support parts, and the In a four-stroke internal combustion engine equipped with a DOHC type valve mechanism in which the bearing part rotatably supports two valve camshafts arranged parallel to each other, the bearing part is integral with the cylinder head. a bearing half;
On the top surface of the valve camshaft, one of the two from the outside and outside in the radial direction,
It is composed of a bearing holder that is tightened and fixed using an outer tightening bolt, and the axial side surface of the bearing half of the bearing part is used for performing machining such as counterboring of the spring seat surface of the valve support part. The cutter shelter for receiving the cutter forms a recess, and the pitch between the outer tightening bolt and the valve drive camshaft is made larger than the pitch between the inner tightening bolt and the valve drive camshaft. A 4-stroke internal combustion engine equipped with a DOHC valve mechanism.