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:
Jan. 06, 2015
Filed:
Mar. 30, 2011
Kazuhiro Nagatsu, Hiroshima, JP;
Masatoshi Hidaka, Higashihiroshima, JP;
Takashi Kaminaga, Hatsukaichi, JP;
Masahisa Yamakawa, Hiroshima, JP;
Kazuhiro Nagatsu, Hiroshima, JP;
Masatoshi Hidaka, Higashihiroshima, JP;
Takashi Kaminaga, Hatsukaichi, JP;
Masahisa Yamakawa, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
Disclosed is an engine control system which is designed to allow homogeneous-charge compression ignition combustion to be performed in an HCCI region (R) defined as an engine operating region including at least a partial-load range of an engine. In a low load zone (R) of the HCCI region (R), a lift amount of an intake valve () is set to a first predetermined value, and an exhaust valve () is allowed to start being opened during an intake stroke at a given timing later than an opening timing of the intake valve (). Further, in the medium load zone of the HCCI region, the lift amount of the intake valve () is gradually increased up to a second predetermined value greater than the first predetermined value, along with an increase in an engine load. The engine control system is capable of adequately controlling an amount of burned gas to be introduced into a cylinder, depending on the engine load to allow the HCCI combustion to be adequately performed in a wider engine load range.