Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
COMBUSTION CHAMBER STRUCTURE FOR DIRECT INJECTION INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/013221
Kind Code:
A1
Abstract:
This combustion chamber structure for a direct injection internal combustion engine is provided with: a cavity 11 formed at the center of a piston top surface 8; and the outer peripheral section 20 of the piston top surface, which is located radially outside the cavity. The outer peripheral section of the piston top surface comprises: a first tapered surface 21 which is connected to a cavity inner wall 30 defining the cavity, is located radially outside the cavity inner wall, and has a first tilt angle θ1 relative to an imaginary plane perpendicular to a piston center axis; and a second tapered surface 22 which is connected to the first tapered surface, is located radially outside the first tapered surface, and has a second tilt angle θ2 relative to the imaginary plane f perpendicular to the piston center axis C. The second tilt angle θ2 of the second tapered surface 22 is greater than the first tilt angle θ1 of the first tapered surface 21.

Inventors:
SHIMIZU Yuuta (Fujisawa Plant 8 Tsuchidana, Fujisawa-sh, Kanagawa 81, 〒2520881, JP)
OZAWA Daisuke (Fujisawa Plant 8 Tsuchidana, Fujisawa-sh, Kanagawa 81, 〒2520881, JP)
TATEISHI Hitoshi (Fujisawa Plant 8 Tsuchidana, Fujisawa-sh, Kanagawa 81, 〒2520881, JP)
ARAI Takuya (Fujisawa Plant 8 Tsuchidana, Fujisawa-sh, Kanagawa 81, 〒2520881, JP)
Application Number:
JP2018/026087
Publication Date:
January 17, 2019
Filing Date:
July 10, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ISUZU MOTORS LIMITED (6-26-1, Minami-oi Shinagawa-k, Tokyo 22, 〒1408722, JP)
International Classes:
F02B23/06; F02F3/26
Domestic Patent References:
WO2015177897A12015-11-26
WO2007091389A12007-08-16
Foreign References:
JP2013527360A2013-06-27
US20170096978A12017-04-06
Attorney, Agent or Firm:
HIBIYA Yukihiko et al. (The Stagio East 717, 19-31 Nishiaraisakaecho 1-chome, Adachi-k, Tokyo 43, 〒1230843, JP)
Download PDF: