US 12,078,137 B1
Injector sleeve having inner groove
Andrew D. Schick, Edelstein, IL (US); and Curtis J. Graham, Peoria, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Jul. 28, 2023, as Appl. No. 18/361,280.
Int. Cl. F02M 61/14 (2006.01); F02M 61/16 (2006.01)
CPC F02M 61/14 (2013.01) [F02M 61/168 (2013.01); F02M 2200/858 (2013.01)] 19 Claims
OG exemplary drawing
 
9. An injector sleeve for a cylinder head, the injector sleeve comprising:
a lower portion,
a middle portion, provided above the lower portion; and
an upper portion, provided above the middle portion, the upper portion having a maximum thickness along at least a portion of a length thereof, and having a groove on an inner surface of the injector sleeve, the groove having an upper planar surface that is normal to a longitudinal axis of the injector sleeve,
wherein the groove further has an inclined planar surface that is at an angle of about 20° to about 40° relative to the longitudinal axis of the injector sleeve,
wherein a corner at which the upper planar surface of the groove and the inclined planar surface meet is a rounded corner, and
wherein a radius of curvature of the rounded corner is about 4 mm.