Operation7218−2/A1
Winterthur Gas & Diesel Ltd.
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2.1 Calculate the Cylinder Lubricating Oil Consumption of a
Consumption Measurement
You use a a consumption measurement (parallel measurement) to do a check of the
parameter settings and function of the cylinder lubricating system.
For data about the measurement procedure, see 7218−1 paragraph 3.3.
Use Equation 3 to calculate the cylinder lubricating oil consumption (feed rate).
Equation 3: Specific Cylinder Lubricating Oil Consumption (g/kWh)
R =
3600 (h x k) ò
f x t x P
R = Specific cylinder lubricating oil consumption (g/kWh)
h = Measurement height (cm)
k = Conversion factor (l/cm)
ò = Oil density (g/l) (typical value 920 g/l)
f = Correction factor (see table below)
t = Measurement time period (seconds)
P = Engine power output (kW during measurement)
([h x k]) = V = Oil volume (l).
Engine power output
%
Correction factor
f
100 1.00
75 1.02
50 1.06
20 1.25
10 1.56
2.1.1 Example for W8X82 Engines
R =
3600 (35 x 0.252) 920
1.02 x 1020 x 28500
= 0.98 g/kWh
Measurement time 17 min = 1020 s
Measuring height 35 cm
Conversion factor 0.252 l/cm
Oil density 920 g/l
Output at 75% 28 500 kW
Correction factor 1.02
2014
Measurement of Cylinder Lubricating Oil Consumption
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