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:
Jul. 27, 2021
Filed:
May. 31, 2018
Mazda Motor Corporation, Hiroshima, JP;
Satoshi Imamura, Hiroshima, JP;
Masaki Fukuma, Hiroshima, JP;
Yasushi Nakahara, Higashihiroshima, JP;
Atsushi Inoue, Aki-gun, JP;
Kota Matsumoto, Aki-gun, JP;
Yoshiharu Ueki, Hatsukaichi, JP;
Michiharu Kawano, Hiroshima, JP;
Yuya Honda, Hiroshima, JP;
Kento Onishi, Hiroshima, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
A structure of a combustion chamber for an engine includes a crown surface of a piston, a cylinder wall surface, a combustion chamber ceiling surface, and an ignition plug which includes an ignition portion. The crown surface of the piston includes: a cavity recessed in the cylinder axis direction; a parallel surface portion which is in parallel to a corresponding region on the combustion chamber ceiling surface at a position above the cylinder axis direction with a gap, when the piston is at a compression top dead center; and an inclined surface portion formed to continue to the parallel surface portion in such a way as to be directed to the ignition plug, when the piston is at a compression top dead center. The parallel surface portion and the corresponding region, in combination, constitute a squish flow generation portion generating a squish flow when the piston is lifted.