Maintenance
3425
−
1/A1
Winterthur Gas & Diesel Ltd.
2.3
Service Life
−
Calculate
Use the formula below to calculate the wear rate of a piston ring:
WR =
(D1
−
D2) x 1000
T2
−
T1
Where:
D
WR = Wear rate (mm/1000 hrs)
D
T2 = Hours (hrs)
D
T1 = First recorded operation hours (hrs)
D
D2 = Second recorded thickness of the chrome-ceramic layer (mm)
D
D1 = First recorded thickness of the chrome-ceramic layer (mm).
See
for examples of wear rate results.
Table 1: Examples of Wear Rate
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 service life:
LT =
(D2
−
Dmin) x 1000
WR
Where:
D
LT = Remaining in-service time (hrs)
D
D2 = second recorded thickness of chrome-ceramic layer (mm)
D
Dmin = Minimum thickness of the chrome-ceramic layer (mm) (refer to
)
D
WR = Calculated wear rate (mm/1000 hrs)
Table 2: Example for Remaining Service Life
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
Piston: Checking Wear of Piston Rings and Ring Grooves
2017
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Страница 546: ...Woodward L Orange GmbH Porschestraße 8 D 70435 Stuttgart Tel 49 711 82609 0 Fax 49 711 82609 61 www lorange com ...