Title:
PREMIXED COMPRESSION-IGNITION TYPE ENGINE SYSTEM
Document Type and Number:
Japanese Patent JP2018059490
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To compatibly suppress combustion noise and secure combustion stability by accurately delaying a timing for compressing and igniting air-fuel mixture on the outer periphery side of a combustion chamber.SOLUTION: On each of a crown surface (75) of a piston (69) and a lower face (79) of a cylinder head (67), a heat insulating layer (92) is provided facing an outer periphery side space of a combustion chamber (73). When the operating condition of an engine (3) is in a high-load region, middle compression stroke injection (203) and compression top dead center injection (205), and water injection (207) are executed, using a fuel injection valve (37) for injecting fuel to a central space and the outer periphery side space of the combustion chamber (73), and using a water injection valve (47) for injecting water to the outer periphery side space of the combustion chamber (73), respectively.SELECTED DRAWING: Figure 10
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Inventors:
HOKAZONO TORU
MAEKAWA KOTA
NAKAMOTO YOSHIHISA
MARUMOTO MASAHARU
ONO RYOHEI
ARAKI KEIJI
MAEKAWA KOTA
NAKAMOTO YOSHIHISA
MARUMOTO MASAHARU
ONO RYOHEI
ARAKI KEIJI
Application Number:
JP2016199496A
Publication Date:
April 12, 2018
Filing Date:
October 07, 2016
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F02D19/12; F02B23/02; F02B23/10; F02B47/02; F02D41/02; F02D41/04; F02D43/00; F02D45/00; F02F1/24; F02F3/12; F02M25/025; F02M25/03
Domestic Patent References:
| JP2010270737A | 2010-12-02 | |||
| JP2006194188A | 2006-07-27 | |||
| JP2013194561A | 2013-09-30 | |||
| JP2009138661A | 2009-06-25 | |||
| JP2012241589A | 2012-12-10 | |||
| JPS56138116U | 1981-10-19 |
Attorney, Agent or Firm:
Maeda patent office