Induction System; Exhaust System - Continental Motors TSIO-520-BE Maintenance And Operator's Manual

Oil leaving the camshaft interior at the front of the crankcase is directed to the left main crankcase gallery.
From there it is directed to the main thrust bearing and the governor drive gear.
From the governor drive gear, lubricating oil is directed from the left main gallery through drilled crankcase
passages and free floating oil transfer collar to the crankshaft. Oil then travels through a transfer plug
installed in the inside diameter of the crankshaft and is routed to the variable pitch propeller. Hydraulic valve
lifters transfer oil from the main oil galleries to the cylinder overhead; roto coils are used on all valves to
assure controlled positive rotation.
Oil transfer tubes and drain holes are provided to return oil to the sump.
3-4 INDUCTION SYSTEM
The induction system components include the aircraft air inlet filter /alternate air door, turbocharger
compressor, aftercoolers, throttle, manifold and cylinder intake ports. Air flows through these components
in the order they are listed.
Refer to Pilots Operating Handbook for alternate air door operations.
The turbocharger compressor is a high volume air pump connected to the opposite end of the turbocharger
turbine (see Turbocharger System). It increases the volume and pressure of air admitted to the cylinder for
combustion. At high compressor discharge pressures, considerable heating of the induction air occurs, due
to compression.
The aftercooler is a heat exchanger which lowers the temperature of the compressor discharge air to permit
more efficient engine and turbocharger operation. The induction air passes through the core of the after
cooler and transfers some of its heat to the cooling fins which are exposed to the relatively cooler ram air.
The manifold is an air distribution system mounted on top of the engine. It serves to carry induction air to
the individual cylinder intake ports.
The cylinder intake ports are cast into the cylinder head assembly. Air from the manifold is carried into the
intake ports, mixed with fuel from the injector nozzles, and enters the cylinder as a combustible mixture
when the intake valve opens.
Overboost protection is provided by a pressure relief valve located between the compressor and the throttle.
In the event of a wastegate or controller malfunction resulting in excessive discharge pressures, the relief
valve will open to prevent excessive manifold pressure.
3-5 EXHAUST SYSTEM
The exhaust system used on the TSI0-520-BE engine consists of left hand and right hand exhaust; collector
assembly which is composed of; elbow riser on cylinder's 5 & 6, tee riser on cylinder's 3 & 4, tee riser (with
turbomounting flange) on cyiinders 1 & 2, turbochargers tail pipes, exhaust bypass assembly, wastegate and
control assembly. The exhaust collector assemblies are mounted to the cylinders, the turbochargers are
mounted to the collectors and have mounting brackets from the turbocharger to the rear engine mounts,
the balance tube is slip fit mounted to the no. 1 & 2 riser tees, the tail pipes are mounted on the
turbochargers and the wastegate with actuator control assembly is mounted between the left/hand tail pipe
and exhaust bypass assembly. The complete exhaust system is provided by Teledyne Continental Motors.
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