VARIABLE LENGTH CONNECTING ROD, VARIABLE COMPRESSION RATIO INTERNAL COMBUSTION ENGINE, AND MANUFACTURING METHOD OF VARIABLE LENGTH CONNECTING ROD

Japanese Patent JP2017110693

A

PROBLEM TO BE SOLVED: To reduce the deviation of an effective length of a connecting rod from a design value, in a variable length connecting rod which can change the effective length by turning an eccentric member by a hydraulic piston mechanism.SOLUTION: A variable length connecting rod 6 comprises: an eccentric member 32 having a sleeve 321 in which a piston pin receiving opening 321c is formed, a first plate 322 which is provided at one end part of the sleeve, and in which a first connecting pin receiving opening 322a is formed, a second plate 323 which is provided at the other end part of the sleeve, and in which a second connecting pin receiving opening 323a is formed, and a connecting pin 324 for connecting the first plate and the second plate in a state of being received in the first connecting pin receiving opening and the second connecting pin receiving opening; a connecting rod main body 31; hydraulic cylinders 33a and 33b; hydraulic pistons 33b and 34b; and connecting members 45 and 46. An axial line of the piston pin receiving opening is decentered from a turning axial line of the sleeve, and the sleeve and the first plate are integrated moldings.SELECTED DRAWING: Figure 4

EZAKI SHUICHI
KAMO YOSHIRO
KIDOOKA AKIO

JP2015243960A

June 22, 2017

December 15, 2015

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TOYOTA MOTOR CORP

F16C7/06; F02B75/04; F02B75/32; F02D15/02; F16C9/04

JP2015137768A	2015-07-30
JP2015045409A	2015-03-12
JP2012007603A	2012-01-12
JP2013040607A	2013-02-28
JPH06241057A	1994-08-30
JPS60178655U	1985-11-27

WO2015074649A1

2015-05-28

Atsushi Aoki
Jun Tsuruta
Yuichi Morimoto
Shinji Mitsuhashi
Koichi Ito
Tatsuki Sone

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