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TEO-540-A1A Engine Installation and Operation Manual
SYSTEM DESCRIPTION
The Lycoming TEO-540-A1A Engine (Figure 1) is a direct-drive six-cylinder, horizontally opposed,
turbocharged, electronically-controlled engine. It has electronic fuel injection, electronic ignition,
electronic propeller governor control (an optional electronic propeller governor can be used), down
exhaust, and induction air coolers. As standard equipment, this engine has an automotive type starter,
two alternator drives, and three AN type accessory drives (two standard and one high speed).
The engine has an Electronic Engine Control System (EECS) which is a microprocessor. The EECS
continuously monitors and automatically adjusts operating conditions such as ignition timing, fuel
injection timing, and fuel mixture. The EECS eliminates the need for magnetos and manual fuel/air
mixture control.
Figure 1
TEO-540-A1A Engine
© 2018 Avco Corporation. All Rights Reserved
System Description
October 2018
Page 1
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