Control apparatus for valve driven by electromagnetic force

Details Control apparatus for valve driven by electromagnetic force Control apparatus for valve driven by electromagnetic force

1989-12-22

1990-09-11

Wolfe, Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

2511291, 361153, 3611691, 123 9024, F01L 904

Patent

active

049553348

ABSTRACT:
An apparatus for controlling a valve driven by electromagnetic force is adapted to sense the amount of bounce of a valve when the valve is seated, whereby a force in the valve seating direction is applied to the valve immediately after it is seated, thereby controlling the bounce force in accurate fashion. The apparatus is provided with memory means for storing the driving force applied by drive control means, and arithmetic means for deciding, in accordance with the driving force stored in the memory, a force acting in the valve lifting direction until immediately before the valve is seated, and a force immediately after the valve is seated. Control of driving force conforming to conditions such as engine rotation is thus learned so that the proper deceleration control can be performed at all times.

REFERENCES:
patent: 3682152 (1972-08-01), Muller-Berner
patent: 4148090 (1979-04-01), Kawai et al.
patent: 4180026 (1979-12-01), Schulzke et al.
patent: 4312494 (1982-01-01), Aoyama
patent: 4544986 (1985-10-01), Buchl
patent: 4614170 (1986-09-01), Pischinger et al.
patent: 4829947 (1989-05-01), Lequesne
patent: 4841923 (1989-06-01), Buchl
patent: 4846120 (1989-07-01), Buchl
patent: 4883025 (1989-11-01), Richeson, Jr.

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