Lycoming TIO-541

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 to 450 hp. 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 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 engine, dry weight 449 lb, AiResearch T-1823 turbosupercharger, certified 23 February 1965. Has top induction, down exhaust and side-mounted accessory drives. Provisions for a single-acting, controllable-pitch propeller and internal piston cooling oil jets.


 * TIO-541-E1A4
 * Six-cylinder, turbocharged, fuel-injected, 380 hp engine, dry weight 595 lb, AiResearch T-1823 turbosupercharger, certified 16 December 1966. Similar to the -A1A but with higher horsepower rating, different cylinder heads, cam shaft, crankshaft and extra counterweights. Incorporates cabin pressurization venturi.


 * TIO-541-E1B4
 * Six-cylinder, turbocharged, fuel-injected, 380 hp engine, dry weight 595 lb, AiResearch T-1823 turbosupercharger, certified 16 December 1966. Similar to the -E1A4 but without the cabin pressurization venturi.


 * TIO-541-E1C4
 * Six-cylinder, turbocharged, fuel-injected, 380 hp engine, dry weight 586 lb, AiResearch T-1879 turbosupercharger, certified 21 October 1969. Similar to the -E1A4 but with a different turbosupercharger with cast bracket, cast transition and a separate wastegate.


 * TIO-541-E1D4
 * Six-cylinder, turbocharged, fuel-injected, 380 hp engine, dry weight 584 lb, AiResearch T-1879 turbosupercharger, certified 21 October 1969. Similar to the -E1B4 but with a different turbosupercharger with cast bracket, cast transition and a separate wastegate.


 * TIGO-541-B1A
 * Six-cylinder, turbocharged, fuel-injected, geared, 450 hp engine, dry weight 663 lb, AiResearch T-1879 turbosupercharger, certified 12 February 1970. Similar to the -C1A but with a higher power rating and without provisions for cabin bleed air.


 * TIGO-541-C1A
 * Six-cylinder, turbocharged, fuel-injected, geared, 400 hp engine, dry weight 703 lb, AiResearch T-1879 turbosupercharger, certified 19 November 1968. Has internal piston cooling oil jets, side-mounted accessory drives and a single oil supply from the propeller governor. Provisions for a reverse-pitch propeller control.


 * TIGO-541-D1A
 * Six-cylinder, turbocharged, fuel-injected, geared, 450 hp engine, dry weight 706 lb, AiResearch T-18A21 turbosupercharger, certified 26 June 1969. Similar to the -C1A but with a higher power rating and a different turbocharger with provisions for cabin bleed air.


 * TIGO-541-D1B
 * Six-cylinder, turbocharged, fuel-injected, geared, 450 hp engine, dry weight 710 lb, AiResearch T-18A51 turbosupercharger, certified 3 December 1976. Similar to the -D1A but with an integral wastegate turbocharger and a revised exhaust system and with low drag cylinders.


 * TIGO-541-E1A
 * Six-cylinder, turbocharged, fuel-injected, geared, 425 hp engine, dry weight 706 lb, AiResearch T-18A21 turbosupercharger, certified 26 June 1969. Similar to the -D1A but with a lower power rating, different turbocharger spring rate and a variable absolute pressure controller.


 * TIGO-541-G1AD
 * Six-cylinder, turbocharged, fuel-injected, geared, 450 hp engine, dry weight 714 lb, AiResearch T-18A21 turbosupercharger, certified 1 May 1975. Similar to the -D1A but it includes an intercooler, a dual magneto and a fuel injector with fuel head enrichment.

Applications

 * TIO-541
 * Beechcraft Baron
 * Beechcraft Duke
 * Mooney Mustang
 * Moynet 360-6 Jupiter


 * TIGO-541
 * Piper PA-31P-425 Navajo
 * Norman Dube Aerocruiser 450 Turbo