Title:
エンジンの燃焼室構造
Document Type and Number:
Japanese Patent JP7180304
Kind Code:
B2
Abstract:
A combustion chamber structure for an engine includes a combustion chamber where SI combustion by spark ignition and CI combustion by self-ignition are conducted. A crown surface includes a cavity recessed to have a bowl-shape; a pair of first raised portions having a mound-shape along a pent roof shape; and a second raised portion provided to protrude at a position orthogonal to a ridge extending direction of the pair of first raised portions. With a height of the first raised portion relative to a height position of a deepest portion of the cavity being represented as H1 and a height of the second raised portion being represented as H2, H1/H2 as a ratio of the height H1 of the first raised portion to the height H2 of the second raised portion is set to be in a range of 1.92 or more and 2.75 or less.
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Inventors:
Satoshi Imamura
Fukuma Mao
Yasushi Nakahara
Atsushi Inoue
Kota Matsumoto
Michiharu Kohno
Yuuya Honda
Futa Nishi
Fukuma Mao
Yasushi Nakahara
Atsushi Inoue
Kota Matsumoto
Michiharu Kohno
Yuuya Honda
Futa Nishi
Application Number:
JP2018215642A
Publication Date:
November 30, 2022
Filing Date:
November 16, 2018
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02B23/10; F02B1/12; F02B11/00; F02F3/26; F16J1/09
Domestic Patent References:
| JP2018087565A | ||||
| JP2016121630A | ||||
| JP2016121564A |
Attorney, Agent or Firm:
Masataka Kotani
Haruhiro Hirata
Haruhiro Hirata