PS-28 Cruiser
PS-28N Cruiser
CR-MM-1-0-00
CHAPTER 10 – POWERPLANT
Revision No.: 8
Date of issue: 2014-01-30
10 - 10
10.2.1.7 Engine air inlet system
Engine air inlet system ensures supply of sufficient air volume to the engine. Air is supplied to
the engine by the NACA type inlet (left on the engine cowling) through the air filter (4, Fig. 10-5)
to the airbox (1). Heated air from the heat exchanger (2), which is attached to the exhaust (3),
is controlled by flaps in the airbox. The heating control flaps is controlled by
CARB HEAT
knob
(8) on the instrument panel.
1 Airbox
5 Oil cooler
2 Heat exchanger
6 Water cooler
3 Exhaust
7
CABIN HEATING
knob
4 Air filter
8
CARB HEAT
knob
Fig. 10-5
: Air inlet system
10.2.1.8 Exhaust system
Exhaust system of PS-28 Cruiser / SportCruiser airplane consist of four exhaust tubes (1, Fig.
10-6) which lead exhaust gases from individual cylinders to the muffler (2). The muffler serves
at the same time as a silencer. Exhaust gases are led from there by the exhaust tube (3) down
the airplane.
On the muffler there is a heat exchanger (5) from which is taken the warm air for the carburetor
preheating and for the cockpit.
The whole exhaust system is manufactured by welding from the stainless steel sheet.
PS-28 Cruiser aircraft fitted with the propeller Sensenich
3B0R5R68C
may have installed after-
muffler that reduces the noise level.
