Title:
CYLINDER DIRECT INJECTION INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2015/162796
Kind Code:
A1
Abstract:
A cylinder direct injection internal combustion engine is configured to include a spark plug arranged in the top of a combustion chamber ceiling, and a fuel injection valve for directly injecting fuel into the combustion chamber. Furthermore, when the rising/falling direction of a piston is a vertical direction, the direction along an axis line of a piston pin is a longitudinal direction, and the direction orthogonal to the vertical and longitudinal directions is a horizontal direction, the combustion chamber ceiling of the cylinder direct injection internal combustion engine has a pair of head-side squish-creating surfaces provided to a prescribed region including an intake-side end edge and a prescribed region including an exhaust-side end edge, the head-side squish-creating surfaces being inclined upward from the outer edge of the combustion chamber toward the center of the combustion chamber. A piston top surface is provided with a pair of piston-side squish-creating surfaces inclined upward from the outer peripheral edge toward the center part of the piston top surface, the piston-side squish-creating surfaces facing the head-side squish-creating surfaces, and a flat surface part that widens in the horizontal direction within a range enclosed by the pair of piston-side squish-creating surfaces and widens in the longitudinal direction as far as the outer peripheral edge. The flat surface part is positioned higher than the bottom end of the piston-side squish-creating surfaces.
Inventors:
IMAOKA YOSHIHIRO (JP)
INOUE TAKAO (JP)
SUZUKI TAKUMA (JP)
INOUE TAKAO (JP)
SUZUKI TAKUMA (JP)
Application Number:
PCT/JP2014/061788
Publication Date:
October 29, 2015
Filing Date:
April 25, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
F02B23/08; F02F3/28
Foreign References:
| JP2012097664A | 2012-05-24 | |||
| JP2006274829A | 2006-10-12 | |||
| JP2012017654A | 2012-01-26 | |||
| JPH09280052A | 1997-10-28 |
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
Masaki Goto (JP)
Masaki Goto (JP)
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