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:
Mar. 01, 1988
Filed:
Apr. 21, 1986
Abstract
Several embodiments of induction systems for an internal combustion engine wherein each cylinder is served by a pair of intake passages having significantly different lengths for tuning them for different engine running requirements. A throttle valve arrangement controls the flow through the intake passages and the selection of the appropriate length for a given running condition. Each intake passage is supplied with air from a respective plenum chamber and the plenum chambers are located at different locations within the engine compartment. In all embodiments, one plenum chamber is positioned adjacent the engine and in the embodiments, the other plenum chamber is positioned either at the end of the engine or at the opposite side. Both plenum chambers are supplied with filtered air from a common air cleaner.