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:
Jan. 21, 1992
Filed:
Apr. 06, 1990
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
An intake system of an internal combustion engine includes first and second intake valve openings provided in the engine body and exposed to a combustion chamber, first and second intake valves in the engine body for opening and closing the valve openings, respectively, and a valve operating system connected to the intake valves for changing the modes of operation of the valves in compliance with the operation of the engine, wherein the engine body is provided with a swirl producing intake port leading to the first intake valve opening and a substantially linear main intake port leading to the second intake valve opening, and wherein the valve operating system is capable of changing over between a state meeting a low speed operation of the engine in which the first intake valve is operated in a mode corresponding to the low speed operation and the second intake valve is in a resting or substantially resting condition, and a state meeting at least a part of operational ranges of the engine other than the low speed operation in which the valves are operated in a mode corresponding to a high speed operation of the engine.