US 11,732,672 B2
Reciprocating engine
Jason Joseph Bellardi, Cincinnati, OH (US); and Andrew Jean Desrosiers, Cincinnati, OH (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jul. 12, 2021, as Appl. No. 17/373,173.
Application 17/373,173 is a continuation of application No. 15/689,440, filed on Aug. 29, 2017, granted, now 11,060,479.
Prior Publication US 2021/0340932 A1, Nov. 4, 2021
Int. Cl. F01P 1/04 (2006.01); F02F 3/22 (2006.01); F16C 3/16 (2006.01); F16C 7/02 (2006.01)
CPC F02F 3/22 (2013.01) [F16C 3/16 (2013.01); F16C 7/023 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A reciprocating engine comprising:
a cylinder comprising a cylinder wall;
a crankshaft;
a connecting rod rotatably coupled to the crankshaft, the connecting rod defining a connecting rod fluid passage extending along a length thereof; and
a piston assembly comprising:
a piston dome comprising a hot side and a cold side, the piston dome coupled to the connecting rod and positioned within the cylinder,
an inlet defined in the piston dome, the inlet in fluid communication with the connecting rod fluid passage and configured to receive a fluid from the connecting rod fluid passage,
a piston dome cooling passage formed as a conduit enclosed within and defined by the piston dome, wherein the piston dome cooling passage is formed to circulate the fluid in a set directional flow through the piston dome, such that the piston dome cooling passage extends through the piston dome from the inlet, toward the hot side, proximate the hot side, and from proximate the hot side out of the piston dome via a plurality of exits, wherein the plurality of exits are defined along a lowermost portion of the piston dome and configured to direct the fluid directly onto the cylinder wall.