US 12,247,667 B2
Split piston ring unit
Petru M. Berghian, Livonia, MI (US); and Fabio Mendes de Araujo, Waterford, MI (US)
Assigned to Mahle International GmbH, (DE)
Filed by MAHLE International GmbH, Stuttgart (DE)
Filed on May 11, 2023, as Appl. No. 18/196,423.
Prior Publication US 2024/0376981 A1, Nov. 14, 2024
Int. Cl. F16J 9/20 (2006.01)
CPC F16J 9/20 (2013.01) 20 Claims
OG exemplary drawing
 
14. A piston for a combustion engine, comprising at least one ring groove and a split piston ring unit arranged in the at least one ring groove, the split piston ring unit including:
a first ring body defining a first circumferential gap;
a second ring body defining a second circumferential gap;
a spacer insert coupled to the first ring body and the second ring body;
the first ring body and the second ring body arranged coaxially and oriented in an offset orientation where the first circumferential gap and the second circumferential gap are disposed circumferentially offset from one another by an offset distance; and
wherein the spacer insert is disposed in the offset distance between the first circumferential gap and the second circumferential gap to maintain the offset orientation.