Title:
DIRECTION INJECTION INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2021148083
Kind Code:
A
Abstract:
To suppress adhesion of fuel to a convex part while maintaining the same effect as when fuel spray interferes with the convex part.SOLUTION: A direct injection internal combustion engine comprises: a cavity 4 provided on a top surface 3 of a piston 1; a convex part 6 that rises from a bottom surface 5 of the cavity, the convex part having a top surface part 9 and a slope part 10 inclined from the top surface part toward the bottom surface of the cavity; a concave surface 12 having a partial conical surface shape or a partial cylindrical surface shape, which is formed at an intersection part 11 of the top surface part and the slope part in the convex part; and an injection hole 2 that is located above the convex part, and injects conical fuel spray F close to the concave surface.SELECTED DRAWING: Figure 1
Inventors:
MATSUMOTO ATSUSHI
Application Number:
JP2020049747A
Publication Date:
September 27, 2021
Filing Date:
March 19, 2020
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F02B23/06; F02F3/26; F16J1/09
Attorney, Agent or Firm:
Haruhisa Kinutani
Hiroyuki Hashiyama
Hiroyuki Hashiyama