US 12,078,095 B1
Internal pre-chamber (IPC) ignition device for turbulent jet ignition in reciprocating engines
Ashish Dinesh Shah, Houston, TX (US)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by ARAMCO SERVICES COMPANY, Houston, TX (US)
Filed on Jun. 16, 2023, as Appl. No. 18/336,768.
Int. Cl. F02B 19/14 (2006.01); F02B 19/04 (2006.01); F02B 19/12 (2006.01)
CPC F02B 19/04 (2013.01) [F02B 19/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A reciprocating engine system, comprising:
a cylinder;
a piston movable within the cylinder, having a piston head;
a combustion chamber defined within the cylinder between the piston head and a cylinder head; and
an intermittent prechamber, comprising:
a lower prechamber jaw provided on the piston head;
an upper prechamber jaw provided through the cylinder head; and
one or more prechamber nozzles formed in an interface between the upper prechamber jaw and the lower prechamber jaw,
wherein a prechamber volume and a nozzle area are variable and directly related to a position of the piston head within the combustion chamber.