Maintenance
3425−1/A2
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
3/ 7
2.3 Lifetime calculation
Calculate the wear rate and the remaining lifetime of a piston ring.
Use the formula below to calculate the wear rate:
WR =
(D1−D2) x 1000
T2−T1
WR = Wear rate [mm/1000 h]
T2 = Actual running hours [h]
T1 = Running hours at previous measurement [h]
D2 = Actual coating thickness [mm]
D1 = Coating thickness at previous measurement [mm]
Example for wear rate calculation:
D1
D2 T1 T2 WR
0.382 0.367 0 (new) 1500 0.01
0.351 0.340 3500 5000 0.0073
Use the formula below to calculate the remaining piston ring lifetime according to
the latest condition setting:
LT =
(D2− Dmin) x 1000
WR
LT = Remaining lifetime [h]
D2 = Actual coating thickness [mm]
Dmin = Minimal coating thickness [mm] (see chapter 2.2)
WR = Calculated wear rate [mm/1000 h]
Example for remaining lifetime calculation:
D1
D2 Dmin T1 T2 WR LT
0.382 0.367 0.05 0 (new) 1500 0.01 31700
0.351 0.340 0.05 3500 5000 0.007333 39545
2013-08
Checking Wear of Piston Rings and Ring Grooves with Three Piston Rings
To Next Page
Loading...
