7-13
Virus SW 121
Pilot Operating Handbook
POH-121-00-40-001
PAGE REV. 0
PAGE
SECTION 7
AIRPLANE DESCRIPTION
APPROVED
Engine Fuel Ignition
Dual self-powered electronic ignition drive two spark plugs in each cylin-
der. The system is denominated as Magnetos, as it mimics the typical func-
tionality of mechanical magnetos. Normal operation is conducted with both
magnetos, as more complete burning of the fuel-air mixture occurs with dual
ignition.
Engine Exhaust
The exhaust system consists of four exhaust headers, a muer and dual tail-
pipes. All of it’s components are made of titanium, making it very light weight.
The two tailpipes are directed downwards at a 45 degrees angle relative to
the aircraft’s roll axis, thus decreasing the possibility of any CO finding to
enter into the cabin.
7.6.3 ENGINE OPERATING CONTROLS
Engine controls are easily accessible to both pilots on the center console.
They consist of a single-lever throttle control, a propeller control lever and
the choke lever
Throttle Lever
A throttle control lever is located in the central console and controls engine
power. The lever acts upon two cables which control the throttle valves of
the two carburetors. A wire, which is operated by the choke handle, actuates
the choke shaft of the respective carburetor, to provide assistance with cold
starts. The engine is not equipped with a carburetor heat device because
the carburetor air inlet position inside the engine cowling grants a suciently
warm air temperature in any condition.
The constant-speed propeller is controlled by a wire controlling a hydraulic
governor. The control is operated by a lever positioned in the throttle quad-
rant.
Start/Ignition Switch
A rotary-type key switch, located on the main switch panel, controls ignition
and starter operation. The switch is labeled OFF-R-L-BOTH-START. In the
OFF position, the starter is electrically isolated, the ignition systems (‘’mag-
To Next Page
Loading...
General