ENGINE MANUAL
IAE50R – AA
E1.01.05 – E
Issue date: 25.Jan.2018
Page: 8-3
Revision no: 9
8.2.4
Coolant
Coolant is a 50 / 50 water – ethylene glycol mix. For details refer to Chapter 5.2.7
The use of a pre–mix solution such as Silkolene Pro–Cool is
strongly recommended so that there is no variation in the
strength or the heat transfer properties of the coolant.
8.2.5
System Pressure
The cooling system is a closed loop system, designed for a working pressure of 0.9 bar
(13 psi) overpressure.
8.2.6
Air cooling system
Lubrication of the eccentric shaft rear bearings is achieved by direct injection of oil from the
metering oil unit and results in an oil mist being entrained into the rotor cooling air system.
The oil mist, in turn, lubricates the rotor bearing, front main bearing and cools the inside of
the rotor.
