Valve collet for desmodromic engine

Details Valve collet for desmodromic engine Valve collet for desmodromic engine

F - Mech Eng,Light,Heat,Weapons

01

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F01L 3/00 (2006.01) F01L 1/30 (2006.01) F01L 1/46 (2006.01)

Patent

CA 2334595

A valve collet concentrically mounted onto a circumferential groove of a valve of a desmodromic valve system for retaining a shim concentrically mounted on the valve of the desmodromic valve system, the shim having an inside surface of a given shape. The valve collet comprises an inner surface having an interlocking portion in the shape of the circumferential groove, the interlocking portion being interlocked with the circumferential groove. The valve collet further comprises an outer surface protruding away from the interlocking portion, the outer surface having a retaining portion matching the shape of the inside surface of the shim and cooperating with the same so as to have an increased contact area with the inside surface and thereby to improve retaining of the shim. Preferably, the inner surface of the valve collet comprises a securing portion extending longitudinally along the valve so as to secure mounting of the valve collet on the valve. Because of its increased contact area with the shim and because of its design, the valve collet does not quickly wear out and/or change in shape, remains properly seated in its bedded position, and thus extends the time interval allowable between regular valve adjustments.

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