The good change valve system of an internal-combustion engine

Title:

The good change valve system of an internal-combustion engine

Document Type and Number:

Japanese Patent JP6170089

Kind Code:

B2

Abstract:

A variable valve mechanism of an internal combustion engine includes a plurality of swing members and a variable device that displaces a control shaft to displace a plurality of slider gears of the swing members at a time, thereby changing valve lifts of the plurality of swing members at a time by meshing of helical splines. The swing members include a first swing member for a predetermined cylinder of a plurality of cylinders and a second swing member for a cylinder other than the predetermined cylinder, and a helix angle of the helical splines varies between the first and the second swing members. The variable device displaces the control shaft to a predetermined normal position to perform a normal operation, and displaces the control shaft to a predetermined cylinder cutoff position to perform a cylinder cutoff operation in which the second swing member does not drive a valve.

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Inventors:

Hiroki Yamaguchi
Naoki Hiramatsu
Takayuki Maesako
Masatoshi Sugiura
Kikuoka Shinichiro
Masaaki Tani
Yuge Motohiro

Application Number:

JP2015088822A

Publication Date:

July 26, 2017

Filing Date:

April 23, 2015

Export Citation:

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