Effectivity: 914 Series
Edition 2 / Rev. 0
d04281
page 97
July 01/2008
BRP-Rotax
INSTALLATION MANUAL
16) Air intake system
See Fig. 60.
The pressure side intake system from turbo charger to the carburetors is included in the scope
of supply. Only the airduct to turbo charger and drainage line of airbox have to be established.
16.1) Operating limits
Temperature in airbox:
max. intervention temperature ................................ 72 °C (162 °F)
*max. intervention temperature .............................. 88 °C (190 °F)
* 914 UL from S/N 4,420.200 (TCU part no. 966741 version.4.6)
* 914 F from S/N 4,417.598 (TCU part no. 966471 version.4.5)
Low air temperature in the airbox is favourable for engine performance and against
knocking tendency at combustion. If need be install intercooler.
The certification to the latest requirements such as FAR and EASA has to be conducted
by the aircraft manufacturer.
CO-Measurement:
CO-Emission ......................... min. 1,5 % CO at 5500 1/min. (Load 100 - 104 %)
CO-Emission ......................... min. 3,0 % CO at 5800 1/min. (Load 110 - 115 %)
Measured on each single cylinder. Measuring point is analog to EGT-measurement. See
section "Exhaust system".
■ CAUTION: Any changes on the air intake system (e.g. modification on the airbox,
usage of an intercooler etc.) can affect the flow rate in the air intake
system and the fuel mixture ratio. In the course of certification the fuel
mixture process must be proofed by a CO-measurement.
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