Lycoming TIO-541
O-6 piston aircraft engine family

The Lycoming TIO-541 engine is a turbocharged, fuel-injected, horizontally opposed, six-cylinder aircraft engine featuring three cylinders per side, manufactured by Lycoming Engines.
The TIO-541 family of engines includes the TIGO-541 turbocharged, fuel-injected, geared, horizontally opposed engine.
There is no carburetted, non-turbocharged version of the engine, which would have been designated O-541 and therefore the base model is the TIO-541.
Design and development
The TIO-541 family of engines covers a range from 310 hp (231 kW) to 450 hp (336 kW). The engine has a fuel injection system which meters fuel in proportion to the induction airflow. The engine has a displacement of 541.5 cubic inches (8.87 litres) and produces a maximum of 450 hp (336 kW) in its TIGO-541 version. The cylinders have air-cooled heads.
The first TIO-541-A1A was type certified on 23 February 1965 on the regulatory basis of CAR 13 effective 15 June 1956 as amended to 13-1 through 13–4.
Variants
TIO-541-A1A
Six-cylinder, turbocharged, fuel-injected, 310 hp (231 kW) engine, dry weight 449 lb (204 kg), AiResearch T-1823 turbosupercharger, certified 23 February 1965. Has top induction, down exhaust and side-mounted accessory drives.
The public source identifies “Lycoming TIO-541” as o-6 piston aircraft engine family. This brief keeps that definition visible, then builds a research path around Lycoming, TIO-541 and piston.
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