Valve driving apparatus and internal combustion engine...

Details Valve driving apparatus and internal combustion engine... Valve driving apparatus and internal combustion engine...

2006-10-03

2006-10-03

Trieu, Thai-Ba (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090160, C123S090150

Reexamination Certificate

active

07114473

ABSTRACT:
A three-dimensional cam of a three-dimensional map state, having uncountable cam profiles continuously ranged along a rotation axis direction, and a valve lifter following a cam surface of the three-dimensional cam are included, and a lift characteristic of a valve is continuously controlled by relative motions of the three-dimensional cam and the valve lifter. The three-dimensional cam has cam top portions formed to have a smoothly ranged edge line substantially along the rotation axis direction thereof, and a part of the edge line includes at least one valley portion to take on a row of peaks. The cam peak portion of the cam top portion which forms the valley portion of the edge line is moderately set to be deviated toward a delayed side with reference to the rotation direction of the cam from the other cam peak portions.

REFERENCES:
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patent: 6000368 (1999-12-01), Mikame
patent: 344490 (1986-06-01), None
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patent: 1 296 157 (1972-11-01), None
patent: 04187807 (1992-07-01), None
patent: 2000-170881 (2000-06-01), None
Patent Abstracts of Japan for JP2000-170881 published on Jun. 23, 2000.
Patent Abstracts of Japan for JP04-187807 published on Jul. 6, 1992.
Office Action from German Patent and Trademark Office received on Feb. 27, 2006 for Aplication No. 10 2004 036 764.7-13 and its English translation.

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