Invention Application
- Patent Title: COMBUSTION CHAMBER STRUCTURE FOR ENGINE
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Application No.: US16678305Application Date: 2019-11-08
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Publication No.: US20200158007A1Publication Date: 2020-05-21
- Inventor: Satoshi IMAMURA , Masaki FUKUMA , Yasushi NAKAHARA , Atsushi INOUE , Kota MATSUMOTO , Michiharu KAWANO , Yuya HONDA , Futa NISHI
- Applicant: Mazda Motor Corporation
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@1c43c8dd
- Main IPC: F02B23/06
- IPC: F02B23/06

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.
Public/Granted literature
- US11015515B2 Combustion chamber structure for engine Public/Granted day:2021-05-25
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