Title:
内燃機関のピストン
Document Type and Number:
Japanese Patent JP6659502
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a piston for an internal combustion engine capable of reducing weight of the piston, and reducing frictional force between the piston and a cylinder, while securing desired strength.SOLUTION: A piston (1) of an internal combustion engine includes a piston head (2), a thrust-side skirt (3) and an anti-thrust-side skirt (4), and a pair of connection walls (5, 5) connecting opposed side ends of both skirts. In a cross-sectional view, the anti-thrust-side skirt has a peripheral length longer than the thrust-side skirt, and the pair of connection walls have rigidity lower than that of a thrust-side part (10), at an anti-thrust-side part (11). Since the thrust-side requiring high strength can improve its strength according to its shape, weight of the piston can be reduced by thinning its wall thickness. Further since the anti-thrust-side is deformed due to its low rigidity, a force between the piston and the cylinder generated by thermal expansion and a side pressure becomes small, and the frictional force is reduced.SELECTED DRAWING: Figure 2
Inventors:
Takahiro Matsuoka
Application Number:
JP2016179300A
Publication Date:
March 04, 2020
Filing Date:
September 14, 2016
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F02F3/00; F16J1/04
Domestic Patent References:
| JP2002317691A | ||||
| JP2010525220A | ||||
| JP11303674A | ||||
| JP2014521878A | ||||
| JP2014084790A | ||||
| JP2000240508A |
Attorney, Agent or Firm:
Patent business corporation Oshima patent office