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. 26, 2019
Filed:
Oct. 09, 2014
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Takanobu Sugiyama, Kanagawa, JP;
Hidehiro Fujita, Kanagawa, JP;
Takayuki Hamamoto, Kanagawa, JP;
Yuta Kanashima, Kanagawa, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, Kanagawa, JP;
Abstract
In an in-line four-cylinder internal combustion engine, exhaust ports () of cylinders #2 and #3 merge together inside a cylinder head and become open as one flat collective exhaust port (). An exhaust manifold () includes separate individual exhaust pipes () for cylinders #1 and #4 and a collective exhaust pipe () for cylinders #2 and #4. Tip ends of these three exhaust pipes are connected to a catalytic converter (). An equivalent diameter of the collective exhaust port () is larger than equivalent diameters of the exhaust ports () before merging. A short diameter of the collective exhaust port () is smaller than or equal to the equivalent diameters of the exhaust ports ().