Electromagnetic valve actuator

Details Electromagnetic valve actuator Electromagnetic valve actuator

1992-01-15

1992-11-10

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

123 9015, 123 9025, F01L 904, F01L 130

Patent

active

051614944

ABSTRACT:
An electromagnetic valve actuator for pivoting a rocker arm to open and close a valve of a four-cycle internal combustion engine. The actuator includes a rocker arm with two ends, one end being in contact with the valve. An electromagnet is provided along with means for mounting the electromagnet to selectively attract the end of the rocker arm opposite the valve to open and close the valve. Control means are provided to sequence the electromagnet so that its selective attraction results in favorable timing, lift and duration of the valve opening and closing so that the engine performs optimally throughout its rpm range. The electromagnetic valve actuator can also be configured as a retrofit system which would replace a conventional cam shaft valve lifter configuration with an electromagnetic valve actuator.

REFERENCES:
patent: 2997991 (1961-08-01), Roan
patent: 4269388 (1981-05-01), Seilly et al.
patent: 4593658 (1986-06-01), Moloney
patent: 4762095 (1988-08-01), Mezger et al.
patent: 4867111 (1989-09-01), Schneider et al.
patent: 4955334 (1990-09-01), Kawamura

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