Cylinder head with desmodromic valve operation, for internal combustion engines
AssigneeDucati Meccanica S.p.A.
InventorsIng. M. Bordi, P. I. Gianluigi Mengoli
Life of this patent
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Abstract
In a cylinder head with desmodromic valve operation for internal combustion engines, where the operation is implemented by two rockers for each valve which control its closure and opening respectively and which act on the valve stem by way of calibrated registers. The rocker for opening the valve is mounted with two degrees of freedom on its pin. One of these degrees of freedom relates to its ability to rotate about the pin and the other to its ability to translate along the pin. By utilizing this second degree of freedom, the rocker can be moved onto and off the valve.
Claims6
A cylinder head for desmodromic valve operation for internal combustion engines which comprises:
- a first rocker assembly comprising a pin having a major axis;
- a first rocker arm rockingly and slidably mounted on said pin such that said rocker may move at least along the axis of said pin;
- and a support bushing rotatably mounted on said pin, said support bushing being shorter in length than said pin so as to permit lateral displacement of said first rocker, said first rocker assembly operable to control the opening of said desmodromic valve;
- wherein said movement of said first rocker along the axis of said pin facilitates engagement and withdrawl of said first rocker from said valve so that access to a plurality of calibrated registers positioned on said valve is permitted without disengaging said rocker assembly.
Dependencies are inferred from the claim text.