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Title:
PISTON FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/181203
Kind Code:
A1
Abstract:
In a piston (1) for an internal combustion engine according to the present invention, a first thinnest part (311) is provided nearer to a piston head part (2) than a pin center (P) in a first skirt part (31). The thickness (T1, T3, T5) of the first skirt part (31) gradually increases (T1 < T3 < T5) from the first thinnest part (311) toward the side with the piston head part (2), and the thickness (T1, T2, T4) of the first skirt part (31) gradually increases (T1 < T2 < T4) from the first thinnest part (311) toward the side opposite from the piston head part (2). Collisions of the first skirt part (31) with a cylinder wall can thereby be effectively reduced.

Inventors:
FUNAHASHI, Toshiyuki (7-1, Onna 4-chome, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
TANNNO, Hirobumi (7-1, Onna 4-chome, Atsugi-sh, Kanagawa 10, 〒2438510, JP)
Application Number:
JP2019/002707
Publication Date:
September 26, 2019
Filing Date:
January 28, 2019
Export Citation:
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Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD. (2520, Takaba Hitachinaka-sh, Ibaraki 03, 〒3128503, JP)
International Classes:
F02F3/00
Foreign References:
JP2007107477A2007-04-26
JP2012136972A2012-07-19
JPH10159974A1998-06-16
JP2013510991A2013-03-28
JP2015511676A2015-04-20
JP2015183526A2015-10-22
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (Ekisaikai Bldg. 1-29, Akashi-cho, Chuo-k, Tokyo 44, 〒1040044, JP)
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