Engine valve control apparatus

Details Engine valve control apparatus Engine valve control apparatus

1988-05-20

1989-10-03

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

123 9015, F01L 104, F01L 904

Patent

active

048709301

ABSTRACT:
Control apparatus for an intake valve and/or an exhaust valve which are slidably mounted for reciprocating movement relative to a valve seat in a cylinder head including an electromagnetic solenoid fixed to the cylinder head and a magnetic pole fixed to at least one of the valves with the magnetic pole opposing the solenoid with a small gap therebetween when the valve(s) is in the open position and a control device for supplying electric current to the electromagnetic solenoid in a predetermined manner responsive to engine operation conditions. The valve(s) is moved to the open position by a cam, electric current is supplied to the electromagnetic solenoid to hold the valve(s) in the open position for a predetermined time and the valve(s) is closed by a return spring when the electromagnetic solenoid is deenergized.

REFERENCES:
patent: 3525317 (1970-08-01), Muir
patent: 3884199 (1975-05-01), Irimajiri et al.
patent: 4697558 (1987-10-01), Meneely
patent: 4762095 (1988-08-01), Mezger et al.

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