Table of Contents
Advertisement
Introduction
The induction system also includes an airframe
mounted aftercooler with a manifold pressure
relief valve (overboost valve) and a sonic
venturi nozzle to provide air for cabin
pressurization.
The engine has a 550 cubic inch displacement,
5.25 inch bore, 4.25 inch stroke, and a 7.5:1
compression ratio.
The firing order is 1-6-3-2-5-4.
Exhaust system runners mounted below the
cylinder heads direct the exhaust to the engine-
mounted turbocharger and wastegate which is
regulated by a controller. The exhaust gas driven
turbocharger system is comprised of a sloped
controller, overboost valve, wastegate assembly,
turbine
and
compressor
associated hoses, linkage, and ducting. The
turbocharger assembly is lubricated by engine
oil.
The crankshaft flange has six bolt holes, two
dowel holes and a center pilot extension to
accommodate a variable pitch propeller.
The engine
crankshaft
pendulum-type torsional damper weights.
Removable hydraulic tappets, push rods, rocker
arm bushings, valves, etc., are lubricated by
engine oil pressure. Roto coils are used for
exhaust valve rotation.
1-6
assembly,
and
is
balanced
with
A wet oil sump is located at the bottom of the
crankcase and positive displacement oil pump is
located at the lower rear of the crankcase. Oil
pressure is maintained by a pressure relief valve
in the oil pump housing.
A geared, right-angle drive starter adapter with a
DC current starter motor is used for cranking.
Two gear-driven magnetos are attached to the
upper rear, front portion of the crankcase. A
direct drive alternator is located on the right-
front of the crankcase.
The coolant system includes a gear driven
centrifugal flow pump, externally mounted on
the starter adapter which supplies coolant flow
to and from the cylinders by means of a dual
type runner manifold on top of the cylinders.
Coolant flow from the cylinders is directed to an
engine mounted customer supplied reservoir.
Coolant is then directed through the remote
customer supplied radiator before returning to
the coolant pump.
A pneumatic pump, and propeller governor are
furnished by the airframe manufacturer.
Advertisement
Chapters
Table of Contents
