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:
Mar. 02, 2021
Filed:
Feb. 04, 2020
Mazda Motor Corporation, Hiroshima, JP;
Takuya Ohura, Aki-gun, JP;
Keiji Maruyama, Aki-gun, JP;
Toru Miyamoto, Aki-gun, JP;
Kouji Hadama, Aki-gun, JP;
Masataka Sumita, Aki-gun, JP;
Takahiro Izaki, Aki-gun, JP;
Shinji Takayama, Aki-gun, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A control device is provided for a compression ignition engine, which controls the engine so that partial compression ignition combustion of A/F-lean mixture gas is carried out in a specific range where an engine load is low. In a first range of the specific range, a normal ignition in which sparks are generated in late compression stroke or early expansion stroke to start SI combustion, and a preceding ignition in which sparks are generated at a timing included in intake stroke or compression stroke and earlier than the normal ignition by a given amount are performed, and fuel is injected at a timing where fuel is present inside the combustion chamber before the preceding ignition. In a high-speed side second range of the specific range, at least the normal ignition is performed and the execution of the preceding ignition is limited.