Operation Manual / 4 Product description / A150-M56/66/57/67 -
A155-M..
4 Monitoring operation / 4.1 Oil pressure, oil temperature
© Copyright 2018 ABB. All rights reserved.
HZTL4032_EN
Revision H
July 2018
4.1.1
Arrangement of temperature and pressure measuring
points
01 Turbocharger contact surface
02 Oil inlet
03 Oil outlet
P
Oil pressure measuring point
T
Oil temperature measuring point
For monitoring the lubricating oil pressure, ABB Turbo Systems recommends installing a "P"
manometer immediately upstream of the turbocharger oil inlet before the orifice. If the
pressure is controlled electronically, the relevant signals should be triggered at the warning
and alarm values.
*) If the drain pipe is vented, the lubricating oil temperature measuring point can be installed
at the outlet in the vent tank. Otherwise the measurement should be taken in the drain pipe
as close to the turbocharger as possible.
Lubricating oil temperature at the inlet
CAUTION
Machine damage
If the oil temperature at the oil inlet exceeds the admissible range, this may
lead to engine damage.
u
Observe oil temperature at the oil inlet according to the following table.
Status for operation
Oil temperature at the inlet
T
oil,inlet
Admissible
30 … 90 °C
Temporarily admissible (< 1 h)
→
alarm
> 90 °C
Not admissible
→
stop engine
> 95 °C
Not admissible
→
do not start engine (before start: preheat oil)
< 30 °C
Table 6: Lubricating oil temperature at the inlet
Lubricating oil temperature at the outlet
The oil temperature at the outlet is mainly dependant on:
¡
Lubricating oil temperature and pressure at the oil inlet
¡
Engine load and turbocharger speed
¡
Exhaust gas temperature
The maximum admissible oil temperature at the outlet is listed in the following table. The
specified oil outlet temperature is to be considered as alarm value for the turbocharger op-
eration and must be monitored according to the current regulations.
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