Title:
Jump-spark-ignition type direct-injection engine
Document Type and Number:
Japanese Patent JP5928251
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a spark ignition type direct-injection engine which includes a catalyst for purifying exhaust gas to be exhausted from a combustion chamber, for promoting the activation of the catalyst while securing engine torque.SOLUTION: In a low speed region of the engine in which the catalyst is in an inactive state, the fuel injection pressure of a direct-injection injector 67 is set to be a predetermined pressure of 30 MPa or higher so that a time from fuel injection start to firing is three msec or shorter, and a fuel injection start timing before ignition is set within a period from the later stage of a compression stroke to the early stage of an expansion stroke so that combustion is started a predetermined crank angle later than a compression top dead center.
Inventors:
Kohei Iwai
Masahisa Yamakawa
Kazuhiro Nagatsu
Takashi Goster
Keiji Araki
Masahisa Yamakawa
Kazuhiro Nagatsu
Takashi Goster
Keiji Araki
Application Number:
JP2012189130A
Publication Date:
June 01, 2016
Filing Date:
August 29, 2012
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02D45/00; F01N3/20; F01N3/24; F02D41/02; F02D41/06; F02D41/34; F02D43/00; F02P5/15
Domestic Patent References:
| JP2010048212A | ||||
| JP2010236429A |
Foreign References:
| WO1999067514A1 |
Attorney, Agent or Firm:
Maeda patent office
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