Airplane Description
DV 20 E AFM
Page 7 - 36 Rev. 2 22-Mar-2022 Doc. No. 4.01.25-E
7.8.6 COOLING SYSTEM
The Rotax 912 iSc3 Sport features liquid cooling of the cylinder heads and ram air cooling
of the cylinders. The cooling system of the cylinder heads is a closed circuit with a
dispatcher vessel (expansion tank) on top of the engine and an equalizing reservoir
(overflow bottle).
An inspection hole in the right-hand side of the upper cowling provides access to the
overflow bottle. The coolant level must be between the MIN and MAX marking.
The expansion tank is closed by a pressure cap with pressure relief valve and return valve.
As the coolant heats up and expands, the pressure relief valve opens and the coolant
flows via a hose to the overflow bottle at atmospheric pressure. As it cools down, the
coolant is sucked back into the cooling circuit. (See also Chapter 2, Coolant).
1 Expansion tank
2 Pressure cap
3 Radiator
4 Overflow bottle
Figure 7.12 - Cooling System
'
To Next Page
Loading...
