Valve actuating mechanism in four-stroke cycle engine

Details Valve actuating mechanism in four-stroke cycle engine Valve actuating mechanism in four-stroke cycle engine

1991-03-04

1992-09-22

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9017, F01L 134

Patent

active

051487837

ABSTRACT:
A valve actuating mechanism is disposed within a four-stroke cycle engine and comprises a rotatable rocker shaft having eccentric large-diameter portions formed as bushings upon the rocker shaft, a rocker arm assembly including a first rocker arm rotatably mounted directly upon the rocker shaft and second and third rocker arms rotatably muonted upon the eccentric bushings of the rocker shaft with the first rocker arm being interposed between the second and third rocker arms, and a cam assembly including first, second and third cam members which drives the first, second and third rocker arms, respectively. The first rocker arm is provided with a branched distal end and the second and third rocker arms are each provided with a distal end which is laid upon each of the distal ends of the first rocker arm. The second and third cams have the same cam profile and the first cam has a cam profile which is different from that of the second and third cams. A play adjusting screw means is provided for either one of the support portions of the first rocker arm and the second and third rocker arms and a screw receiving portion is provided upon the other one of the support portions of the first rocker arm and the second and third rocker arms in such a manner that a clearance is defiend between a distal end of the play adjusting means and the screw receiving portion is adjusted.

REFERENCES:
patent: 4397270 (1983-08-01), Aoyama
patent: 4638773 (1987-01-01), Bonvallet
patent: 4643141 (1987-02-01), Bledsoe
patent: 5018487 (1991-05-01), Shinkai
patent: 5025761 (1991-06-01), Chen
Japanese Utility Model Publication No. 55-152308, 1980.

Affiliated with

Also associated with

Rating

Valve actuating mechanism in four-stroke cycle engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve actuating mechanism in four-stroke cycle engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve actuating mechanism in four-stroke cycle engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1061417