Crevice Height Top-to-Land

Height of the crevice region between the top of the crevice and the first compression ring.

Crevice Thickness

Distance between the Piston edge and the Cylinder Liner, or thickness of the crevice region.

Top Ring Gap Area

Cross-sectional flow area for crevice flow between the cylinder and the region beyond the first compression ring.

Second Ring Gap Area

Cross-sectional flow area for crevice flow between the first o-ring and the region beyond the second compression ring.

Volume Behind Top Ring

Volume behind the top compression ring.

Volume Between Ring 1 and 2

Volume of the region between the first (top) compression ring and the second compression ring.

Volume Behind Second Ring

Volume behind the second compression ring.

First Ring Thickness

Thickness of the first (top) compression ring.

Second Ring Thickness

Thickness of the second compression ring.

First Ring Width

Width (lateral) of the first compression ring.

Second Ring Width

Width (lateral) of the second compression ring.

Mass of the First Ring

Mass of the first (top) compression ring.

Mass of the Second Ring

Mass of the second compression ring.

Bottom Clearance - First Ring

Clearance distance on the bottom side of the first compression ring.

Bottom Clearance - Second Ring

Clearance distance on the bottom side of the second compression ring.

Top Clearance - First Ring

Clearance distance on the top side of the first compression ring.

Top Clearance - Second Ring

Clearance distance on the top side of the second compression ring.