Engine valve actuation control system

Details Engine valve actuation control system Engine valve actuation control system

1998-01-09

1999-02-23

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

123 9031, 123198D, F01L 904

Patent

active

058733353

ABSTRACT:
There is shown an electric motor control of the engine valves of an internal combustion engine. A brushless torque actuator controls the rotation of a cam member which provides the appropriate lift to the engine valve to move the valve from the closed to the open position. The electronic control which is connected to the actuator includes a look-up table for controlling the timing of the engine in accordance with the operation of the internal combustion engine. The electronic control operates to return the cam member to its home position closing the engine valves.

REFERENCES:
patent: 4256065 (1981-03-01), Hirt
patent: 5016583 (1991-05-01), Blish
patent: 5327856 (1994-07-01), Schroeder et al.
patent: 5331931 (1994-07-01), Blish et al.
patent: 5598814 (1997-02-01), Schroeder et al.
Henry et al; A Novel, Fully Flexible, Electro-Mechanical Engine Valve Actuation System; Society of Automotive Engineers Pub. #970249, 1997.

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