ABB HT580635 - Monitoring Operation; Oil Pressure, Oil Temperature; Table 5: Lubricating Oil Pressure at Oil Inlet before Turbocharger

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 Monitoring operation
4.1 Oil pressure, oil temperature
Lubricating oil pressure, oil inlet
To limit the oil flow rate through the turbocharger to the admissible values with the engine
at full load, an oil orifice is mandatory or already fitted at the turbocharger oil inlet if the oil
inlet pressure is > 3bar.
CAUTION
Assuring lubricating oil pressure
Serious damage to the engine or property can result from a missing or insuf-
ficient lubricating oil supply.
u The lubricating oil pressure must be monitored during operation and the
necessary pressure assured at the oil inlet.
Status for operation Pressure at oil inlet upstream of
the turbocharger
[bar] Overpressure
Normal operation 2.0< p
oil
≤ 4.5 *)
Engine start: Cold oil, admissible for a maximum of 15
minutes
<8.0
Engine idling, admissible for a maximum of 1 hour 0.5< p
oil
≤ 2.5
Pre-lubrication and post-lubrication (engine stopped) 0.5< p
oil
≤ 1.0
Warning signal: (n ≥ 0.5 x n
Bmax
) <1.25
Alarm signal: Not admissible. Stop the engine immediately. <0.6
Table5: Lubricating oil pressure at oil inlet before turbocharger
*) Depending on use of an oil orifice in accordance with the enginebuilder’s specifications.
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