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:
May. 07, 2024
Filed:
Nov. 17, 2022
Mazda Motor Corporation, Hiroshima, JP;
Yuji Harada, Aki-gun, JP;
Kenji Uchida, Aki-gun, JP;
Ryohei Ono, Aki-gun, JP;
Masayuki Kidokoro, Aki-gun, JP;
Kazuhiro Nagatsu, Aki-gun, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
To effectively suppress strong knock that occurs in the operating region of high load and high rotation in a specific engine having a pre-chamber in a combustion chamber, the engine includes a piston that defines a combustion chamber together with a cylinder block and a cylinder head. The combustion chamber includes a sub-chamber and a main chamber separated from the sub-chamber by a pre-chamber. The specific ratio obtained by dividing a bore/stroke ratio of a cylinder by the volume of the sub-chamber is greater than or equal to 6.6 cmand less than or equal to 57.6 cm.