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Title:
SPARK-IGNITION INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/180130
Kind Code:
A1
Abstract:
Provided is a spark-ignition internal combustion engine in which a raised portion (31) comprising an intake-side inclined surface (34) and an exhaust-side inclined surface (35) is provided to the top face (10) of the piston (5), and a cavity (40) is provided on the raised portion (31) in a position that corresponds to the spark plug, wherein the cavity (40) is provided with a bottom surface portion (41) and a cylindrical peripheral portion (42) and is formed such that the ratio of the depth of the cavity (40) to the diameter of the cavity (40) is no higher than 0.3.

Inventors:
AOKI, Shuma (3-1 Shinchi, Fuchu-cho, Aki-gu, Hiroshima 70, 〒7308670, JP)
MURANAKA, Hiroaki (3-1 Shinchi, Fuchu-cho, Aki-gu, Hiroshima 70, 〒7308670, JP)
YAMAGUCHI, Naohiro (3-1 Shinchi, Fuchu-cho, Aki-gu, Hiroshima 70, 〒7308670, JP)
WADA, Yoshitaka (3-1 Shinchi, Fuchu-cho, Aki-gu, Hiroshima 70, 〒7308670, JP)
Application Number:
JP2018/007282
Publication Date:
October 04, 2018
Filing Date:
February 27, 2018
Export Citation:
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Assignee:
MAZDA MOTOR CORPORATION (3-1 Shinchi, Fuchu-cho Aki-gu, Hiroshima 70, 〒7308670, JP)
International Classes:
F02B23/10; F02F3/26
Foreign References:
JPH11182247A1999-07-06
JP2005180384A2005-07-07
JP2000045778A2000-02-15
JP2002038956A2002-02-06
JP2016118169A2016-06-30
JP2010014081A2010-01-21
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (Osaka Nakanoshima Building 2nd Floor, 2-2 Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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