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:
Oct. 01, 1985
Filed:
Apr. 17, 1984
Applicant:
Inventors:
Hiroichi Takubo, Hiroshima, JP;
Hiroshi Sasaki, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F01C / ;
U.S. Cl.
CPC ...
123242 ; 418 / ;
Abstract
A rotary piston engine having an exhaust port device in the rotor housing. The exhaust port device includes a single exhaust port formed in the rotor housing and an insert located in the exhaust port. The insert has a hollow body and partition walls separating the trailing part of the port opening into three sub-parts. The central one of the sub-parts is covered by a cover wall so that the port area is gradually increased to suppress exhaust noise. The insert can be rapidly brought into a high temperature during engine start so that the exhaust gas purifying system can rapidly be activated.