
Operation Manual / TPL85-B14/-B15/-B16
Operation
4
Underpressure measurement on filter
silencer
4.5
Page 45
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M
ay
2016
H
ZT
L2491_
EN
R
ev
is
ion
B
Underpressure measurement on filter silencer
4.5
A U-tube manometer can be ordered from ABB Turbo Systems for meas-
uring the negative pressure at the filter silencer.
The measurement can be used for the following purposes:
To measure the correction factor for calculating the turbocharger effi-
ciency during the engine acceptance test.
The use of a filter mat on the filter silencer can cause a loss of pres-
sure. A significant pressure loss indicates an increase in dirt build-up
in the filter material.
U-tube manometer on filter silencer (if present)
81000
Filter silencer
81050
U-tube manometer
A [mm H
2
O]
Pressure loss / Pressure difference
4.5
4.5.1