摘要:
A valve operating system in an internal combustion engine which provides a stable seating force for an engine valve (V) and includes an armature (12) operatively connected to a stem (8) of the engine valve that is capable of being seated on a valve seat member (6) provided to a cylinder head, valve-opening (13) and valve-closing (14) electromagnets for exhibiting electromagnetic forces for attracting the armature to open and close the engine valve, respectively, and valve-opening (15) and valve-closing (16) 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 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.
摘要:
A valve operating system in an internal combustion engine, that can be readily assembled and installed on the engine, including a casing (11) coupled to an upper surface of a cylinder head (5), an armature (12), a pair of electromagnets (13,14) for exerting electromagnetic forces on the armature in directions of opening and closing of an engine valve (V), and a pair of resilient means (15,16) for biasing the engine valve in the opening and closing directions, respectively, and for retaining the armature at a predetermined neutral position by cooperation with earth other during deenergization of both the electromagnets. The resilient means (16) for closing the engine valve is mounted between a retainer (38) fixed to the valve stem (8)and a fixed position on the cylinder head, and the electromagnets are fixed within the casing which is constructed so that an upper portion of the stem can be inserted into the casing. Accommodated within the casing are the armature (12) separatably coaxially connected at an upper end of the stem, and the resilient means (15) for opening the engine valve, which also serves to provide a resilient force for urging the armature against the first electromagnet to support the armature, when the armature is not connected to the stem.