JPS615305U

JPS615305U - engine cylinder head

Info

Publication number: JPS615305U
Application number: JP8935584U
Authority: JP
Inventors: 亨吉村; 博通尾藤; 真一郎北田
Original assignee: 日産自動車株式会社
Priority date: 1984-06-18
Filing date: 1984-06-18
Publication date: 1986-01-13

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 drawings]

第１図、第２図及び第３図はこの考案の一実施例を示す
図であって、第１図はシリンダヘッドを下面から見た吸
、排気バルブロの配置図、第２図は各シリンダの中央部
に位置するバルブ交角の大きな吸気バルブの断面図、第
３図は各シリンダの両端部に位置するバルブ交角の小さ
な吸気バルブの断面図、第４図は１シリンダ当り３個の
カムノーズを有する吸気バルブ用カムシャフトの部分図
、第５図は３個の吸気バルブのタイミングを同一にした
場合のカムノーズの位置関係図で第５Ａ図は第４図のＡ
−Ａ線断面図、第５Ｂは第４図のＢ−Ｂ線断面図、第５
Ｃ図は第４図のＣ−Ｃ線断面図である。第６図は他の実施例を示し、第１図に相当するものであ
る。第７図はさらに他の実施例を示し、第１図に相当するも
のであり、第８図は第７図の吸気ポートの中心で切断し
た断面図、第９図は吸気通路遮断装置の詳細説明図、第
１０図は吸気通路遮断弁のコントロール方法を示す一実
施例の説明図である。１・・・・・・シリングヘッド、３・・・・・・燃焼室
、８，９・・・・・・吸気バルブロ、１０．１１・・・
・・・排気パルブ口、１３，１４・・・・・・吸気ポー
ト、１５．１６・・・・・・排気ポート、θ１０バルブ
交角、２３・・・・・・カムシャフト、２４．５２・・
・・・・シム、２５．５３・・・・・・バルブリフタ、
４０・・・・・・吸気バルブ、４３，５１・・・・・・
カムノーズ、４６・・・・・・吸気通路遮断弁、５９・
・・・・・点火栓、６０・・・・・・吸気バルブ、８５
・・・・・・アクチュエータ。Figures 1, 2 and 3 are diagrams showing one embodiment of this invention, in which Figure 1 is a layout of the intake and exhaust valves seen from the bottom of the cylinder head, and Figure 2 is a diagram showing the arrangement of the intake and exhaust valves for each cylinder. Figure 3 is a cross-sectional view of the intake valve with a large valve intersection angle located in the center of the cylinder, Figure 3 is a cross-sectional view of the intake valve with a small valve intersection angle located at both ends of each cylinder, and Figure 4 shows three cam noses per cylinder. FIG. 5 is a partial view of the camshaft for intake valves, and FIG. 5 is a positional relationship diagram of the cam nose when the timing of the three intake valves is the same, and FIG.
-A sectional view, 5B is a BB sectional view of Fig. 4, 5th
Figure C is a sectional view taken along the line CC in Figure 4. FIG. 6 shows another embodiment, which corresponds to FIG. 1. FIG. 7 shows still another embodiment, which corresponds to FIG. 1, and FIG. 8 is a sectional view taken at the center of the intake port in FIG. 7, and FIG. 9 shows details of the intake passage blocking device. An explanatory diagram, FIG. 10, is an explanatory diagram of an embodiment showing a method of controlling an intake passage cutoff valve. 1... Schilling head, 3... Combustion chamber, 8, 9... Intake valve holder, 10.11...
...Exhaust valve port, 13,14...Intake port, 15.16...Exhaust port, θ10 valve intersection angle, 23...Camshaft, 24.52...
...Shim, 25.53...Valve lifter,
40... Intake valve, 43, 51...
Cam nose, 46...Intake passage cutoff valve, 59.
...Spark plug, 60...Intake valve, 85
...actuator.

Claims

[Scope of utility model registration request]

In a double overhead force shaft engine with multiple intake and exhaust valves per cylinder, the valve intersection angle of the valve arranged at the center in the row direction of each cylinder is the valve intersection angle of the other plural valves arranged at both ends of the cylinder. An engine cylinder head characterized by having each valve arranged so as to be smaller.