Title:
CYLINDER DIRECT INJECTION SPARK IGNITION TYPE INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2004278455
Kind Code:
A
Abstract:
To obtain good stratified combustion in a wide load range by adjusting a forming range of stratified air-fuel mixture (size of the air-fuel mixture mass).
At the time of low load stratified operation, swirl flow is strengthened by a swirl control valve 13. Due to this swirl flow, spray injected from a fuel injection valve 11 is concentrated in the vicinity of a cylinder central axis, and compact air-fuel mixture mass is formed by an inner cavity 15b of a double-structured cavity 15 of a piston 14. In contrast, at the time of high load stratified operation, the swirl flow is weakened, and relative large air-fuel mixture mass is formed by an outer cavity 15a.
Inventors:
HIRATANI KOJI
HOTTA ISAMU
KUBO MASAAKI
SHIINO SHUNICHI
HOTTA ISAMU
KUBO MASAAKI
SHIINO SHUNICHI
Application Number:
JP2003073173A
Publication Date:
October 07, 2004
Filing Date:
March 18, 2003
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
F02B23/00; F02B17/00; F02B23/10; F02B31/00; F02D41/02; F02D41/04; F02D43/00; F02D45/00; F02F3/26; F02M61/18; (IPC1-7): F02B23/00; F02B17/00; F02B23/10; F02B31/00; F02D41/02; F02D41/04; F02D43/00; F02D45/00; F02F3/26; F02M61/18
Attorney, Agent or Firm:
Tomijio Sasashima
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