7
Eaton
Electro-hydraulic Fan Drive System E-SYFD-MROO1-E3 October 2008
Stand-Alone
Fan Drive System
Variable-displacement Pump
This system is similar to the
Fixed Displacement Pump
system. For engines not
equipped with an ECM, the
cooling strategy is based on
a temperature sensor and
digital inputs to the TCA.
A variable displacement
pump fan drive system is
suited for larger and more
complex cooling systems. A
variable displacement pump
reduces the displacement
to match the flow as per the
cooling demand. This feature
offers on-going energy savings
and creates less heating of
the hydraulic fluid.
Variable displacement
pumps are best suited
for Fan Drive Systems
above 20 HP.
TCA/EFX
Sensor Inputs
