Title:
Direct injection engine control device
Document Type and Number:
Japanese Patent JP6299819
Kind Code:
B2
Abstract:
A fuel injection valve is caused to inject fuel in a latter half of a compression stroke in such a manner that a fuel concentration immediately before start of combustion is higher in a middle portion of a combustion chamber than in an outer peripheral portion thereof in a low load range where the engine load is lower than a predetermined set reference load. An intake valve driving device is controlled in such a manner that an intake valve closing timing in the low load range is advanced on a retard side with respect to an intake bottom dead center in a case where the engine speed is high, as compared with a case where the engine speed is low, and intake air within a cylinder is blown back toward an intake port at least in a range where the engine speed is low.
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Inventors:
Nobuyuki Ota
Nou Yoshinao
Akira Yinyama
Nou Yoshinao
Akira Yinyama
Application Number:
JP2016155451A
Publication Date:
March 28, 2018
Filing Date:
August 08, 2016
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D13/02; F02B23/10; F02D41/04; F02D41/34; F02D43/00
Domestic Patent References:
| JP2007211596A | ||||
| JP2015048839A | ||||
| JP2011169288A | ||||
| JP2009019502A | ||||
| JP2011058372A | ||||
| JP2015063941A | ||||
| JP2013194712A | ||||
| JP2011106369A |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Ko Sato
Masataka Otani
Ko Sato