Valve operating system in internal combustion engine

Details Valve operating system in internal combustion engine Valve operating system in internal combustion engine

1997-08-07

1999-07-27

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

25112901, 25112919, F01L 904, F16K 3106

Patent

active

059272376

ABSTRACT:
A valve operating system in an internal combustion engine which provides a stable seating force for an engine valve and includes an armature operatively connected to a stem of the engine valve that is capable of being seated on a valve seat member provided to a cylinder head, valve-opening and valve-closing electromagnets for exhibiting electromagnetic forces for attracting the armature to open and close the engine valve, respectively, and valve-opening and valve-closing resilient means for exhibiting resilient forces for biasing the engine valve in opening and closing directions, respectively, and for retaining the armature in a predetermined neutral position by cooperation with each other during deenergization of both the valve-opening and valve-closing electromagnets. When the engine valve V is closed by energizing the valve-closing electromagnet and is seated on the valve seat member, only the resilient force of the valve-closing resilient means is applied to the engine valve V because the valve-closing electromagnet attracts the armature and compresses the valve-opening resilient means.

REFERENCES:
patent: 4719882 (1988-01-01), Kreuter
patent: 5711259 (1998-01-01), Pischinger et al.

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