Title:
INTERNAL COMBUSTION ENGINE LUBRICATION STRUCTURE
Document Type and Number:
Japanese Patent JP2019215039
Kind Code:
A
Abstract:
To secure a lubrication oil amount for a cylinder inner wall.SOLUTION: An internal combustion engine lubrication structure includes: a connecting rod 20 that includes a one end portion 21 connected to a piston 50 housed in a cylinder 12 and an other end portion 22 having a through hole 23; a crank shaft 30 that includes a crank pin 32 rotatably supported in the through hole 23 and an arm portion 34 facing a side face 22A of the other end portion 22; an oil passage 39, formed in the crank shaft 30, capable of supplying lubrication oil to a rotatable-support part 37 that supports the through hole 23 and crank pin 32; an oil reservoir groove 41, concavely formed in either one of a facing-side faces 22A, 34A between the other end portion 22 and arm portion 34, capable of reserving the lubrication oil flowing out of the rotatable-support part; and an oil ejection groove 45, concavely formed in either of the facing-side faces 22A, 34A, capable of ejecting at least a portion of lubrication oil within the oil reservoir groove 41 toward inside the cylinder 12 in a state where the piston 50 is positioned near the top dead point.SELECTED DRAWING: Figure 1
More Like This:
Inventors:
YAMASHITA KENICHI
Application Number:
JP2018112412A
Publication Date:
December 19, 2019
Filing Date:
June 13, 2018
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F16C3/14; F01M1/06; F01M9/06; F16C7/02
Attorney, Agent or Firm:
at Patent Business Corporation