Bias system for dedicated engine braking rocker arm in a...

Details Bias system for dedicated engine braking rocker arm in a... Bias system for dedicated engine braking rocker arm in a...

2011-07-05

2011-07-05

Solis, Erick (Department: 3747)

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

C123S090150, C123S090160

Reexamination Certificate

active

07971569

ABSTRACT:
A lost motion valve actuation system includes an engine brake housing and one or more hydraulic fluid supply passages extending through the housing. Master and slave pistons are slidably disposed corresponding bores in the housing. The master and slave pistons are used to provide selective actuation to one or more engine valves. An engine brake rocker arm disposed adjacent to the housing includes a master piston contact surface and a bias mechanism contact surface. A bias mechanism is disposed in the housing and includes a bias piston which extends from the housing. The bias piston biases the rocker arm out of contact with an engine cam during select engine operation modes, such as during a positive power mode of operation. The bias piston may be mechanically or hydraulically repositioned to permit the rocker arm to contact the engine cam during a second mode of engine operation, such as an engine braking mode.

REFERENCES:
patent: 6691674 (2004-02-01), McCarthy et al.
patent: 7827958 (2010-11-01), Dietrich et al.
patent: 7882810 (2011-02-01), Vanderpoel et al.
patent: 2005/0252484 (2005-11-01), Vanderpoel
patent: 2007/0144472 (2007-06-01), Yang
Hope A. Bolton and Jay M. Larson, Valvetrain System Design and Materials, “A Chronology of Hydraulic Lash Compensation in the United States” by W.A. Dammers (Eaton Corporation, Marshall, Michigan), International Symposium on Valvetrain System Design and Materials, Apr. 14-15, 1997, pp. 27-41, ASM International, Materials Park, Ohio, United States of America.

Affiliated with

Also associated with

Rating

Bias system for dedicated engine braking rocker arm in a... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bias system for dedicated engine braking rocker arm in a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bias system for dedicated engine braking rocker arm in a... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2702664