Electric valve drive device in an internal combustion engine

Details Electric valve drive device in an internal combustion engine Electric valve drive device in an internal combustion engine

1999-01-07

1999-11-16

Kamen, Noah P.

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

F07L 904

Patent

active

059838477

ABSTRACT:
A poppet valve is provided to open and close a valve seat in an internal combustion engine. At the end of a valve stem of the valve, a cylindrical support is fixed, and on the outer circumferential surface of the support, a moving coil is wound. There is formed an annular cavity in a yoke fixed to a bracket fixed on a cylinder head, and a permanent magnet is fixed in the annular cavity of the yoke. Between the permanent magnet and the yoke in the annular cavity, the support which has the moving coil is inserted. By a control system having CPU, an electric current is applied to the moving coil, thereby providing optimum valve timing and lift to decrease seating noise and improving engine performance.

REFERENCES:
patent: 5598814 (1997-02-01), Schroeder et al.

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