JPS60185010U

JPS60185010U - Internal combustion engine lubricating oil passage device

Info

Publication number: JPS60185010U
Application number: JP7315084U
Authority: JP
Inventors: 畠中　正人; 大城　義孝
Original assignee: 日産自動車株式会社
Priority date: 1984-05-21
Filing date: 1984-05-21
Publication date: 1985-12-07

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図は、従来の内燃機関の動弁機構部を示す断面図、
第２図は、同じ（その油圧バルブリフタの構造を示す断
面図、第３図は、この考案の一実施例を一部省略して示
す断面図、第４図は、第３・図に一点鎖線■で囲んで示
した部分の拡大断面図、第５図は、機関回転数と油圧と
の関係を示す線図である。１・・・シリンダヘッド、４ａ、４ｂ・・・油圧ハルフ
リフタ、８・・・オイルポンプ、１１・・・油通路、１
２・・・分配通路、１３ａ、１３ｂ・・・一方向弁、１
４・・・弁ハウジング、１５・・・エア放出筒、１６・
・・弁体、１７・・・スプリング。FIG. 1 is a sectional view showing the valve mechanism of a conventional internal combustion engine;
Fig. 2 is a cross-sectional view showing the structure of the same hydraulic valve lifter, Fig. 3 is a cross-sectional view showing an embodiment of this invention with some parts omitted, and Fig. 4 is a dashed-dotted line in Fig. 3. Fig. 5, which is an enlarged cross-sectional view of the part surrounded by ■, is a diagram showing the relationship between engine speed and oil pressure. 1... Cylinder head, 4a, 4b... Hydraulic half lifter, 8... ... Oil pump, 11 ... Oil passage, 1
2...Distribution passage, 13a, 13b...One-way valve, 1
4...Valve housing, 15...Air release tube, 16.
... Valve body, 17... Spring.

Claims

[Scope of utility model registration request]

In an internal combustion engine that supplies lubricating oil discharged from an oil pump to a hydraulic valve lifter that operates intake and exhaust valves through a distribution passage, an air relief passage is provided in the distribution passage, and the lubricating oil pressure of the engine is supplied to the air relief passage. A lubricating oil for an internal combustion engine, comprising a one-way valve that opens at a pressure slightly lower than the relief control pressure of a hydraulic regulator to be adjusted, and a throttle section that regulates the flow rate of the one-way valve within a predetermined value. Passage device.