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:
Aug. 14, 1990
Filed:
Sep. 13, 1989
Yasushi Inoue, Hiroshima, JP;
Shigeki Nakatani, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A positive crankcase ventilation system for a V-type internal combustion engine has elongated first and second cylinder banks provided with first and second rows of cylinders offset, respectively, in a lengthwise direction to each other, thereby forming a dead corner on one end of each cylinder bank. A series of reinforcing bulk heads for reinforcing a series of main bearings holding a crankshaft divide a crankcase into a series of crankcase chambers. Each crankcase chamber is provided with a bottom opening and vent holes formed in the bulk head. An air introduction passage is provided by the side of and at the middle of each row of cylinders in the cylinder block for introducing filtered air into and through the crankcase and oil return passages are formed in each dead corner.