Title:
内燃機関
Document Type and Number:
Japanese Patent JP6838296
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an internal combustion engine capable of reducing engine oil consumption while suppressing friction loss increase.SOLUTION: In an internal combustion engine (10), a portion (48) of a minimum diameter (Dcmin) of a cylinder bore (20) within a movement range (Ls) of a skirt part (38) with reciprocation of a piston (18) is included within a range (Rs) opposite to the skirt part (38) in the case where the piston (18) is being located at a bottom dead point. A clearance ((Dcmin-Ds)/2) between the skirt part (38) and the portion of the minimum diameter is a minimum value in a clearance ((Dc-Ds)/2) between the skirt part (38) and a wall surface of the cylinder bore (20). A tensile force of an oil ring is set greater than a tensile force of a first compression ring, and the tensile force of the first compression ring is set greater than a tensile force of the second compression ring.SELECTED DRAWING: Figure 4
Inventors:
Hiroshi Yaguchi
Takashi Suzuki
Hisashi Oki
Takashi Suzuki
Hisashi Oki
Application Number:
JP2016120499A
Publication Date:
March 03, 2021
Filing Date:
June 17, 2016
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02F3/00; F02F1/00; F02F5/00; F16J9/00; F16J10/04
Domestic Patent References:
| JP2001011556A | ||||
| JP2015197121A | ||||
| JP2003328852A | ||||
| JP2012215238A |
Foreign References:
| DE102008026146A1 | ||||
| DE102014017361A1 |
Attorney, Agent or Firm:
Patent business corporation Prospec patent office