Valve train device for an engine

Details Valve train device for an engine Valve train device for an engine

Filed on

2006-07-04

Date issued

2006-07-04

Examiner

Denion, Thomas (Department: 3748)

Patent Class

Internal-combustion engines

SubClass

Poppet valve operating mechanism

SubSubClass

Rocker

Other Related Categories

C123S090160, C123S090200, C123S090440

Type

Reexamination Certificate

Status

active

Patent number

07069890

Description

ABSTRACT:
A valve train device for an engine is adapted to pivot a rocker arm supported on a rocker arm support shaft to drive a valve which opens and closes a valve opening formed in a combustion chamber. The device comprises a valve drive device and a swing member pivotally supported on a swing member support shaft and driven to pivot about the swing member support shaft by the valve drive device. An intermediate rocker member is pivotally supported on the rocker arm support shaft. The intermediate rocker member is provided between a swing cam surface formed on the swing member and a rocker face formed on the rocker arm, for transmitting the movement of the swing cam surface generated by the valve drive device to the rocker face. An intermediate rocker moving mechanism is configured to rotate the rocker arm support shaft and thereby move a first contact point between the intermediate rocker member and the swing cam surface and a second contact point between the intermediate rocker member and the rocker face to continuously vary at least one of the valve opening duration and the amount of valve lift.

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Co-pending U.S. Appl. No. 10/990,557, filed Nov. 17, 2004 by Applicant Hideo Fujita, et al.
Co-pending U.S. Appl. No. 11,263,528, filed on Oct. 31, 2005 by Hideo Fujita.
Co-pending U.S. Appl. No. 11,263,573, filed on Oct. 31, 2005 by Hideo Fujita.

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