Title:
ENGINE
Document Type and Number:
Japanese Patent JP2019100306
Kind Code:
A
Abstract:
To provide an engine which enables improvement of durability of a bearing metal while reducing rotational resistance of a crank shaft.SOLUTION: An engine includes a crank shaft 13 and has: a crank support medium 31 formed with a journal bore 25 which houses a crank journal 21 of the crank shaft 13; and a bearing metal 26 provided between the journal bore 25 and the crank journal 21 housed in the journal bore 25 and including a lining 26b facing the crank journal 21. The journal bore 25 includes: a main bore part 41 formed at an axial center part; and sub bore parts 42 formed at axial end parts. In a radial direction of the crank journal 21, the lining 26b of the bearing metal 26 overlaps with the sub bore parts 42 of the journal bore 25. A reaction force F1 received by the bearing metal 26 from each sub bore part 42 is smaller than a reaction force F2 received by the bearing metal 26 from the main bore part 41.SELECTED DRAWING: Figure 6
Inventors:
SORIMACHI YUKI
TAKADA SHUHEI
NAGASHIMA HITOHIRO
NUMAKUNAI TSUNERO
TAKADA SHUHEI
NAGASHIMA HITOHIRO
NUMAKUNAI TSUNERO
Application Number:
JP2017235024A
Publication Date:
June 24, 2019
Filing Date:
December 07, 2017
Export Citation:
Assignee:
SUBARU CORP
International Classes:
F02F7/00; F16C9/02; F16C17/04
Domestic Patent References:
| JP2016191433A | 2016-11-10 | |||
| JP2018115717A | 2018-07-26 | |||
| JP2016530467A | 2016-09-29 | |||
| JP2016061390A | 2016-04-25 |
Attorney, Agent or Firm:
Tsutsui International Patent Office