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. 15, 2002
Filed:
Jul. 13, 2000
Katsuhiro Fukuda, Shizuoka-ken, JP;
Suzuki Motor Corporation, Hamamatsu, JP;
Abstract
An exhaust system for an outboard motor with a four-stroke engine having a cylinder block including a plurality of cylinders. The cylinders are arranged vertically so that a crankshaft is vertically oriented. The cylinders have different respective exhaust timings. The exhaust system further includes a plurality of separate exhaust passages that extend vertically and are formed integrally with the cylinder block. Each exhaust port from each cylinder communicates with at least one of the plurality of exhaust passages. Also, the exhaust port from the cylinder disposed at the lowest position among the plurality of cylinders communicates with the most distantly disposed exhaust passage out of the plurality of the exhaust passages. Further, the exhaust passages are joined at a point which is further downstream than the exhaust port from the lowest cylinder. The exhaust system provides a simple design with enhanced engine performance that enables group exhaust from a plurality of cylinders while preventing exhaust interference from occurring.