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. 25, 2015
Filed:
May. 03, 2011
Tsuyoshi Yamamoto, Hiroshima, JP;
Yasushi Nakahara, Higashihiroshima, JP;
Takayuki Yamada, Hiroshima, JP;
Kazuya Hayashi, Higashihiroshima, JP;
Yuichiro Ikeda, Hiroshima, JP;
Tsuyoshi Yamamoto, Hiroshima, JP;
Yasushi Nakahara, Higashihiroshima, JP;
Takayuki Yamada, Hiroshima, JP;
Kazuya Hayashi, Higashihiroshima, JP;
Yuichiro Ikeda, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
This disclosure provides a method of adjusting capacities of combustion chambers of a multi-cylinder engine having a cylinder head with recessed parts that partially form the combustion chambers and a mating surface for mating with a cylinder block, which includes casting a cylinder head material having flat reference surfaces on top of the recessed parts of the cylinder head, machining the cylinder head material to form the mating surface, measuring distances in a height direction from the mating surface to the reference surfaces, respectively, and adjusting machining margins of machining portions of the reference surfaces of the recessed parts based on the measured height direction distances.