The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 1999
Filed:
Aug. 07, 1997
Yasuyuki Komatsu, Saitama, JP;
Harumi Hatano, Saitama, JP;
Kouichi Ikoma, Saitama, JP;
Minoru Nakamura, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
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.