US 12,104,551 B1
Piston having baffle ring for limiting abnormal combustion and piston and cylinder liner assembly
Siddhesh Bharat Bhoite, Peoria, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Jan. 30, 2024, as Appl. No. 18/426,463.
Int. Cl. F02F 3/00 (2006.01); F02F 3/02 (2006.01)
CPC F02F 3/02 (2013.01) 20 Claims
OG exemplary drawing
 
1. A piston comprising:
a piston crown defining a piston center axis, and including an annular rim extending circumferentially around a combustion bowl, and a crown outer surface having a plurality of ring grooves including an uppermost ring groove formed therein;
a plurality of piston rings seated within the plurality of ring grooves and including a baffle ring seated within the uppermost ring groove;
the crown outer surface further including an uppermost land and a second land, and the uppermost ring groove is formed axially between the uppermost land and the second land; and
the piston crown further including a plurality of pressure balancing passages having a circumferential distribution around the piston center axis, and each extending through the piston crown from a first opening formed in the uppermost land to a second opening formed in the second land.