US 11,852,048 B2
Gas admission valve (GAV) assembly and system and method thereof
John Stephen Pipis, Jr., Washington, IL (US); Selvakumar Selvaraj, Chennai (IN); and Eric Lee Schroeder, Germantown Hills, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Apr. 14, 2022, as Appl. No. 17/720,410.
Prior Publication US 2023/0332519 A1, Oct. 19, 2023
Int. Cl. F01L 1/18 (2006.01); F01L 1/14 (2006.01); F02F 1/24 (2006.01); F02F 1/42 (2006.01)
CPC F01L 1/181 (2013.01) [F01L 1/146 (2013.01); F01L 2305/00 (2020.05); F02F 1/4214 (2013.01); F02F 2001/245 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A reciprocating engine comprising:
a cylinder in an engine block of the reciprocating engine;
an intake actuation assembly to introduce fuel and/or air into the cylinder for combustion, the intake actuation assembly including an intake lifter, an intake pushrod, an intake rocker arm, an intake valve bridge, and at least one intake valve;
an exhaust actuation assembly to allow exhaust to exit the cylinder, the exhaust actuation assembly including an exhaust lifter, an exhaust pushrod, an exhaust rocker arm, an exhaust valve bridge, and at least one exhaust valve; and
a hydrogen actuation assembly to introduce hydrogen directly into the cylinder, the hydrogen actuation assembly including a hydrogen lifter, a hydrogen pushrod, a hydrogen rocker arm, a hydrogen valve bridge, and a gas admission valve,
wherein the intake rocker arm, the exhaust rocker arm, and the hydrogen rocker arm are individually rotatable about a common shaft to open and close the at least one intake valve, the at least one exhaust valve, and the gas admission valve, respectively, and
wherein one of the intake rocker arm and the exhaust rocker arm is on the common shaft between the hydrogen rocker arm and the other of the intake rocker arm and the exhaust rocker arm.