Engine

Details Engine Engine

2008-02-22

2011-11-08

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090480

Reexamination Certificate

active

08051815

ABSTRACT:
A valve stopping mechanism wherein when hydraulic fluid pressure is low a cylinder operating state is set and a response of a switch from a cylinder stop state to the cylinder operating state is high. An intake valve and an exhaust valve, a first intake valve spring and a first exhaust valve spring are provided for energizing the valves in the direction of closing the valves, valve drive cams, valve stopping mechanisms, on the basis of a stop hydraulic fluid pressure and energization of plunger springs, for selectively generating valve operating and valve stop states. The valve stopping mechanism generates the operating state when the energizing force of the plunger spring is larger than the press force of the stop hydraulic fluid pressure and generates the stop state when the press force of the stop hydraulic fluid pressure is larger than the energizing force of the plunger spring.

REFERENCES:
patent: 5564373 (1996-10-01), Hara
patent: 6076491 (2000-06-01), Allen
patent: 2006/0081213 (2006-04-01), Yang et al.
patent: 2006/0213470 (2006-09-01), Maehara et al.
patent: 10-184327 (1998-07-01), None

Affiliated with

Also associated with

Rating

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 Engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4282238