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:
Apr. 06, 2021
Filed:
Feb. 27, 2018
Applicant:
Mazda Motor Corporation, Hiroshima, JP;
Inventors:
Shuma Aoki, Yokohama, JP;
Hiroaki Muranaka, Higashihiroshima, JP;
Naohiro Yamaguchi, Hiroshima, JP;
Yoshitaka Wada, Higashihiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 23/10 (2006.01); F02F 1/42 (2006.01); F02B 75/12 (2006.01); F02F 3/26 (2006.01);
U.S. Cl.
CPC ...
F02B 23/10 (2013.01); F02F 1/42 (2013.01); F02B 2023/106 (2013.01); F02B 2075/125 (2013.01); F02B 2275/48 (2013.01); F02F 3/26 (2013.01);
Abstract
In a spark-ignition internal combustion engine in which a protrusion including an intake-side inclined surface and an exhaust-side inclined surface is formed on a top surface of a piston, and a cavity is formed in the protrusion at a position associated with a spark plug. The cavity includes a bottom surface and a tubular peripheral surface, and is formed in such a way that a ratio of a depth of the cavity with respect to a diameter of the cavity is 0.3 or smaller.