Driving apparatus for intake and exhaust valves of internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsSeinosuke Hara, Hiromichi Ofuji, Kazuyuki Miisyo, Yasuo Matsumoto, Manabu Kato
Life of this patent
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Abstract
There is provided an apparatus for driving intake and exhaust valves (12) of an internal combustion engine. The apparatus comprises a valve lift controlling means (16) connected to the valves to control the lift of the valves in response to the engine operating conditions, valve driving cams (13) fixed on a cam shaft (14) and being in contact with the valve lift controlling means (16), and a phase controlling means (23) arranged on the cam shaft (14) to control the relative rotational phase of the valve driving cams, i.e., the open and close timing of the valves (12) in response to the engine operating conditions.
Claims17
An apparatus for driving a valve (12) of an internal combustion engine, comprising;
- a valve lift controlling means connected to said valve (12) to control the lift of said valve (12) in response to the engine operating conditons;
- a valve driving cam (13) fixed on a first cam shaft (14) and being in contact with said valve lift controlling means (15);
- and
- a phase controlling means (23) arranged on said first cam shaft (14) to control the rotational phase of said valve driving cam relative to the phase of the piston position in the engine.
Dependencies are inferred from the claim text.