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. 31, 2021
Filed:
Apr. 17, 2019
Mazda Motor Corporation, Hiroshima, JP;
Kota Matsumoto, Aki-gun, JP;
Tomonori Urushihara, Aki-gun, JP;
Keiji Maruyama, Aki-gun, JP;
Masanari Sueoka, Aki-gun, JP;
Ryohei Ono, Aki-gun, JP;
Yuji Harada, Aki-gun, JP;
Toru Miyamoto, Aki-gun, JP;
Atsushi Inoue, Aki-gun, JP;
Tatsuhiro Tokunaga, Aki-gun, JP;
Takuya Ohura, Aki-gun, JP;
Yusuke Kawai, Aki-gun, JP;
Tomohiro Nishida, Aki-gun, JP;
Keita Arai, Aki-gun, JP;
Yodai Yamaguchi, Aki-gun, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
The invention is provided with an ignition control section and an injection control section. When partial compression ignition combustion is carried out, the ignition control section causes an ignition plug to carry out: main ignition in which a spark is generated in a late period of a compression stroke or an initial period of an expansion stroke to initiate SI combustion; and preceding ignition in which the spark is generated at earlier timing than the main ignition. Also, when the partial compression ignition combustion is carried out, the injection control section causes an injector to inject fuel at such timing that the fuel exists in a cylinder at an earlier time point than the preceding ignition. Ignition timing of the preceding ignition is set to be more retarded when fuel concentration specified by a fuel concentration specification section is low than when the fuel concentration is high.