Title:
PISTON FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/062771
Kind Code:
A1
Abstract:
An intake guide part (5) that guides a tumble flow to a piston top surface (2) is formed, and lateral flat surfaces (6) are formed on both sides in a crankshaft axial direction of the intake guide part (5). Stepped parts (7) each extending in an intake/exhaust direction and facing a piston outer circumferential side are formed between the intake guide part (5) and the lateral flat surfaces (6), and the intake guide part (5) is set to a position higher than the lateral flat surfaces (6), thereby forming a compact combustion chamber (9) that excludes the lateral flat surfaces (6). A projection (11) is formed on a central flat surface (10) of the intake guide part (5), and a tumble flow is branched to both sides of the projection (11) in the vicinity of a compression dead point and caused to circulate through a pair of narrow passages (14) formed between the projection (11) and the lateral flat surfaces (6) on both sides.
Inventors:
NAMISATO KAZUAKI (JP)
MURAOKA TOMOYUKI (JP)
KIMURA HIROYUKI (JP)
SHINKAI SHINJI (JP)
MURAOKA TOMOYUKI (JP)
KIMURA HIROYUKI (JP)
SHINKAI SHINJI (JP)
Application Number:
PCT/JP2021/038039
Publication Date:
April 20, 2023
Filing Date:
October 14, 2021
Export Citation:
Assignee:
MITSUBISHI MOTORS CORP (JP)
International Classes:
F02F3/24
Foreign References:
| JP2009046985A | 2009-03-05 | |||
| JP2017061901A | 2017-03-30 | |||
| JP2020084797A | 2020-06-04 |
Attorney, Agent or Firm:
AIHARA & PARTNERS PATENT ATTORNEY CORPORATION (JP)
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