Lift-variable valve-operating system for internal combustion...

Details Lift-variable valve-operating system for internal combustion... Lift-variable valve-operating system for internal combustion...

2007-08-07

2007-08-07

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090200, C123S090390, C123S090440

Reexamination Certificate

active

11405678

ABSTRACT:
A lift-variable valve-operating system for an engine, includes a subsidiary cam swingably carried on a movable support shaft. A cam follower is operatively connected to an engine valve and follows the subsidiary cam. The lift amount of the engine valve is varied by displacing the movable support shaft. The subsidiary cam has an oil sump provided in an upper surface and opens upwards to store oil. The subsidiary cam is provided with an abutment face abutting against the cam follower. The abutment face includes a lift portion for turnably driving the cam follower; and a base circle portion connected to the lift portion and which retains the cam follower in a rest state. The subsidiary cam is also provided with a lubricating oil bore for guiding the oil in the oil sump to the base circle portion.

REFERENCES:
patent: 7146949 (2006-12-01), Mendler
patent: 7-63023 (1995-03-01), None

Affiliated with

Also associated with

Rating

Lift-variable valve-operating system for internal combustion... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lift-variable valve-operating system for internal combustion..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lift-variable valve-operating system for internal combustion... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3865114