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:
May. 04, 1999
Filed:
Oct. 08, 1997
Gregory J Binversie, Grayslake, IL (US);
George L Broughton, Zion, IL (US);
Paul W Breckenfeld, Kenosha, WI (US);
William D Dunham, Waukegan, IL (US);
Stephen J Towner, Libertyville, IL (US);
James A Nettles, Mountain Home, AR (US);
Outboard Marine Corporation, Waukegan, IL (US);
Abstract
A cylinder block for an internal combustion engine includes a mounting surface having therein a crankcase cavity and a pair of cylinders respectively extending from the cavity in acute angular relation to each other and each including a cylinder wall. The cylinder walls include outer ends having cylinder head mounting surfaces, mixture transfer ports, mixture supply ports, gas discharge ports and a main exhaust gas discharge passage. A passage communicates between the exhaust gas discharge ports and with the main exhaust gas discharge passage. Mixture supply passages extend between the mounting surface and the cylinder head mounting surfaces and include reed valves. Branch passages communicate between the transfer ports in the cylinder walls and the mixture supply passages at respective locations between the cylinder head mounting surfaces and the reed valves. Auxiliary supply passages extend from the mounting surface and communicate with the mixture supply ports in the cylinder walls.