Title:
A control device of an internal-combustion engine
Document Type and Number:
Japanese Patent JP6260718
Kind Code:
B2
Abstract:
There are provided a first fuel injection valve arranged to directly inject a fuel into a combustion chamber, and a variable compression ratio mechanism arranged to vary an upper dead center position of a piston, and thereby to vary a compression ratio of an internal combustion engine. When a predetermined fuel cut condition is satisfied, a fuel cut by which a fuel injection of the first fuel injection valve is stopped is performed. When a predetermined fuel cut recovery condition is satisfied during the fuel cut, the fuel injection of the first fuel injection valve is restarted. The compression ratio at the restart of the fuel injection is set to be smaller than a normal state compression ratio determined in accordance with a driving state as a temperature of a wall surface of the combustion chamber becomes lower. With this, the upper dead center position of the piston becomes low. It is possible to decrease the fuel adhesion to the piston. It is possible to suppress a discharge amount of an exhaust particulate, and a discharge number of the exhaust particulate.
Inventors:
Ryo Uchida
Tadashi Yoshimura
Chizen Date
Rina Kamio
Tadashi Yoshimura
Chizen Date
Rina Kamio
Application Number:
JP2016563317A
Publication Date:
January 17, 2018
Filing Date:
December 09, 2014
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F02D15/02; F02B75/04; F02D41/10; F02D41/12; F02D41/32
Domestic Patent References:
| JP2009293493A | ||||
| JP2012241654A |
Foreign References:
| WO2013141089A1 |
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Tomioka Kiyoshi