Titan 340CC Operation Manual page 5

using standard SAE sleeve-type bearings at the interface with the crankshaft
and bronze bushings at the interface with the piston pin. The connecting
rod is bolted around the crankshaft pins via 2 bolts and nuts through each
connecting rod cap.
The pistons are machined from aluminum alloy and are secured to the
connecting rod via a floating steel piston pin, each manufactured with integral
aluminum plugs to prevent wear against the cylinder barrel wall. Each piston
has 2 compression rings and a single oil control ring.
The 340CC lightweight accessory case does not have provisions for
accessories, and is made from a magnesium casting. The housing forms part
of the oil pump and a cover for the rear of the engine.
The oil sump attaches to the bottom of the engine and has at least one drain
plug. The sump has internal air passages for the cylinders and an oil galley
to provide engine lubrication and with a suction screen to prevent debris from
circulating through the engine. The sump has a pad on the bottom to attach
the carburetor. The 340CC oil sump is fabricated from aluminum sheet with
welded construction.
The TITAN 340CC engine is designed to be cooled via air pressure forced from
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the top of the engine to the bottom of the engine during flight. Air is directed
over the cylinder heads via baffles, which attach between each cylinder pair.
The air is exhausted out the rear of the engine via baffles associated with
each airframe installation. The engine is designed to be operated with at least
6.5 inches of water cooling air pressure drop across the engine in the most
adverse flight and operating conditions. An oil cooler that can extract up to
500 BTU/min of heat energy is required.
The 340CC engine uses a MA4SPA (or equivalent ASTM approved) carburetor,
which is a single barrel float-type carburetor equipped with a mixture control
and an idle cut-off. The carburetor requires fuel delivery to the carburetor inlet
between ½ and 5 psi. Approximately 18 inches of fuel head provides ½ psi
for gravity feed systems.
Operation Manual for AEC TITAN 340CC ASTM Certified Engine | 5
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