ABB A135-M65 - 4 Monitoring Operation; Oil Pressure, Oil Temperature; Table 6 Lubricating Oil Pressure, Oil Inlet

Operation Manual / 4 Product description / A130-M.. - A145-M..
4
Monitoring operation
Page 29 /
121
© Copyright 2017 ABB. All rights reserved.
HZTL4031_EN
Revision E
January 2017
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 oil inlet of the bearing casing if the
oil inlet pressure is > 3 bar.
CAUTION
Assuring lubricating oil pressure
Serious damage to engine or property can result from missing or insufficient
lubricating oil supply.
 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 orifice
[bar]
Normal operation 2.0 < p
oil
≤ 4.5
Engine start: Cold oil, admissible for maximal 15 minutes
< 8.0
Engine idling, admissible for maximal 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 6: Lubricating oil pressure, oil inlet
01
Turbocharger contact surface
02
Oil inlet
03
Oil outlet
M
Oil pressure measuring point
T
Oil temperature measuring point
For monitoring the lubricating oil pressure, ABB Turbo Systems recommends installing an "M"
manometer immediately before the turbocharger. If the pressure is controlled electronically,
the appropriate signals are to be triggered at the warning and alarm values.
*) If the drain pipe is vented, the measuring point for lubricating oil temperature can be in-
stalled at the outlet in the vent tank. Otherwise the measurement should be taken in the drain
pipe as close to the turbocharger as possible.