Rotax 912 i series Installation Manual

d05785.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 i Series
Edition 1/Rev. 0
75-00-00
Page 1
January 01/2012
Chapter: 75-00-00
COOLING SYSTEM
General note The shape, size and position of the radiator(s) depends mainly on the
space available in the aircraft.
When correctly installed in the aircraft, the optionally available BRP-Pow-
ertrain radiator has enough cooling capacity to keep within the standard
specified operating limits. The flow resistance of the radiator coolant is
correctly adjusted to the cooling system. The tube size must be sufficient.
The size, shape, orientation of all cooling components must not compro-
mise the engine coolling under all operation conditions.
Table of con-
tents
This chapter of the Installation Manual contains system description, oper-
ating limits and requirements for the aircraft engine cooling system.
Subject Procedure
Cooling system
System description
Operating limits
Coolant types
Page 3
Page 3
Page 5
Page 6
Checking the efficiency of the cooling system
Cooling system requirements
Page 7
Page 8
Connecting sizes and position of connections
Requirements, permissible position and installation
position of radiator, expansion tank, overflow bottle
ROTAX overflow bottle
Page 11
Page 12
Page 15
General notes on the cooling system
Coolant capacity
Cooling air duct
General notes on the cooling air ducts
Data for optional components of cooling system
Page 17
Page 18
Page 19
Page 20
Page 21

Rotax 912 i series Specifications

General

Number of Cylinders	4
Max Power	100 hp (73.5 kW)
Max Power Output RPM	5800 rpm
Ignition System	Dual electronic ignition
Oil System	Dry sump, forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
TBO	2000 hours
Engine Type	4-stroke, horizontally opposed
Displacement	1352 cm³
Bore x Stroke	84 mm x 61 mm
Max Torque	128 Nm
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Fuel System	Electronic fuel injection
Cooling System	Liquid/air-cooled