JPS5911131U

JPS5911131U - Compression ratio control device for variable compression ratio internal combustion engine

Info

Publication number: JPS5911131U
Application number: JP10577782U
Authority: JP
Inventors: 中原　光治; 石田　富雄; 本荘　典史; 吉田　吉孝
Original assignee: ダイハツ工業株式会社
Priority date: 1982-07-12
Filing date: 1982-07-12
Publication date: 1984-01-24
Also published as: JPS6339390Y2

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図は本考案の実施例による機関要部の縦断正面図、
第２図は第１図の■−■視断面断面図３図はスピルポー
トとスピル体との別個図である。１・・・シリンダブロック、２・・・シリンダ１１ツド
、　　　　　５・・・燃焼室、７・・・副シリンダ、９
・・・副ピストン、１２・・・油圧室、１１．ｌｌａ・
・・ステム、１５゜１５ａ、−・スピルポート、１６，
１６１・・・スルビル体、１９・・・アクチェータの一
例のダイヤフラム機構、２８・・・ガバナー機構。FIG. 1 is a longitudinal sectional front view of the main parts of the engine according to an embodiment of the present invention;
FIG. 2 is a sectional view taken along the line 1--2 in FIG. 1, and FIG. 3 is a separate view of the spill port and the spill body. 1... Cylinder block, 2... Cylinder 11, 5... Combustion chamber, 7... Sub-cylinder, 9
... Sub-piston, 12... Hydraulic chamber, 11. lla・
・・Stem, 15° 15a, -・Spill port, 16,
161... Surbil body, 19... Diaphragm mechanism as an example of actuator, 28... Governor mechanism.

Claims

[Scope of utility model registration request]

A sub-piston is slidably inserted into a sub-cylinder communicating with the combustion chamber, a hydraulic chamber is formed on the back of the sub-piston, a boat for supplying hydraulic oil is connected to the hydraulic chamber, and a hydraulic oil supply boat is connected to the sub-piston. A stem is provided in the axial direction of the auxiliary piston so as to protrude outside the cylinder, and a spill port is bored at the protruding end of the stem to allow the hydraulic oil in the hydraulic chamber to flow out.
A spill body is provided at the protruding end of the stem and slides in the axial direction so as to open and close the spill port and to displace the opening/closing position along the axial direction of the stem. An actuator is connected that moves backward away from the combustion chamber as the load increases, and moves forward toward the combustion chamber as the load decreases. A compression ratio control device for a variable compression ratio internal combustion engine, characterized in that the spill body moves in a backward direction as the rotational speed increases, and in a forward direction as the rotational speed increases.