Desmodromic valve system and retrofit kit for conventional...

Details Desmodromic valve system and retrofit kit for conventional... Desmodromic valve system and retrofit kit for conventional...

2007-05-01

2007-05-01

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Valve driven closed

C123S090250, C123S090260, C123S090440

Reexamination Certificate

active

11177205

ABSTRACT:
A desmodromic valve and cam system is provided which is adapted to be installed into an internal combustion pushrod engine. The system includes a camshaft assembly having a plurality of removably attached cam lobes installed onto a main camshaft; a valve connector assembly installed onto a distal tip of each valve; a rocker having a valve movement end mechanically linked to a respective valve connector and a pushrod connecting end mechanically linked to an upper distal end of a pushrod; a hydraulic lifter follower assembly assigned to each valve which includes a pin disposed on a distal end thereof which is adapted to engage and track a follower groove formed on each respective cam lobe; and a pushrod assigned for each valve, each pushrod having lower distal end mechanically linked to a respective hydraulic follower lifter. The configuration of the aforementioned system eliminates the need to use valve springs to return the valves to a closed position, thereby, increasing horsepower and fuel efficiency, while simultaneously reducing emissions.

REFERENCES:
patent: 5347965 (1994-09-01), Decir
patent: 5394843 (1995-03-01), Decir
patent: 5732670 (1998-03-01), Mote, Sr.

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