Maintenance
3425
−
1/A2
RT-flex58T-D
Winterthur Gas & Diesel Ltd.
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
Summary of Contents for WARTSILA RT-flex58T-D
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