Cirrus Design
Section 7
SR22T
Systems Description
P/N 13772-005
7-31
P/N 13772-005
7-31
Engine
The airplane is powered by a Teledyne Continental TSIO-550-K, twin
turbocharged, direct drive, fuel injected, air cooled, horizontally
opposed 6 cylinder engine that uses a high pressure, wet sump style
oil system for lubrication. The engine has a 550 cubic inch
displacement and is rated to 315 bhp at 2500 RPM with a 2000-hour
Time Between Overhaul (TBO) schedule. The engine utilizes a top air
induction system, engine mounted throttle body, bottom exhaust
system, and a full flow spin-on disposable oil filter. Engine front
accessories include a hydraulically operated propeller governor, a
gear-driven primary alternator and a belt-driven secondary alternator.
Rear engine accessories include a starter, gear driven oil pump, gear
driven fuel pump, and dual gear driven magnetos. The engine is
attached to the firewall by a six-point steel engine mount. The firewall
attach points are structurally reinforced with gusset-type attachments
that transfer thrust and bending loads into the fuselage shell.
Engine Controls
Engine controls are easily accessible to the pilot on a center console.
They consist of a single-lever power (throttle) control and a mixture
control lever. A friction control wheel, labeled FRICTION, on the right
side of the console is used to adjust control lever resistance to rotation
for feel and control setting stability.
Power (Throttle) Lever
The single-lever throttle control, labeled MAX-POWER-IDLE, on the
console adjusts the engine throttle setting. The lever is mechanically
linked by cable to the air throttle body/fuel-metering valve. Moving the
lever towards MAX opens the air throttle butterfly and meters more fuel
to the fuel manifold. No propeller control is required. The governor is
set to 2500 maximum RPM in climb and cruise.
Mixture Control
The mixture control lever, labeled RICH-MIXTURE-CUTOFF, on the
console adjusts the proportion of fuel to air for combustion. The
Mixture Control Lever is mechanically linked to the mixture control
valve in the engine-driven fuel pump. Moving the lever forward
(towards RICH) repositions the valve allowing greater proportions of
fuel and moving the lever aft (towards CUTOFF) reduces (leans) the
proportion of fuel. Full aft position (CUTOFF) closes the control valve.
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