Title:
エンジンの燃焼室構造
Document Type and Number:
Japanese Patent JP7283055
Kind Code:
B2
Abstract:
To provide a combustion chamber structure for an engine using SI combustion and SPCCI combustion in combination for maintaining both a tumble flow and a swirl flow until a late period for a compression stroke.SOLUTION: A combustion chamber of the engine has a geometric compression ratio set to be 15 or over to enable the SPCCI combustion. The crown surface 50 of a piston 5 includes a cavity 51 recessed in a bowl shape. The outer peripheral edge of a bottom 511 of the cavity 51 is circular in an upper face view. B/D is set in a range of 1.19-2.20, where D is the diameter of the outer peripheral edge of the bottom 511 and B is the diameter of the piston 5.SELECTED DRAWING: Figure 12
Inventors:
Satoshi Imamura
Mao Fukuma
Yasushi Nakahara
Atsushi Inoue
Kota Matsumoto
Michiharu Kohno
Yuuya Honda
Futa Nishi
Mao Fukuma
Yasushi Nakahara
Atsushi Inoue
Kota Matsumoto
Michiharu Kohno
Yuuya Honda
Futa Nishi
Application Number:
JP2018215597A
Publication Date:
May 30, 2023
Filing Date:
November 16, 2018
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02B23/10; F02B1/12; F02B11/00; F02F3/26
Domestic Patent References:
| JP201887566A | ||||
| JP10131756A | ||||
| JP2016121630A |
Attorney, Agent or Firm:
Masataka Kotani
Tsutomu Fukunari
Tsutomu Fukunari
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