Rotax 914 UL DCDI 115HP Aircraft Engine

- 4-stroke turbocharged engine specially developed for recreational aircraft. Also exists in a certified version: Rotax 914 F.
- 4 horizontally opposed cylinders, “boxer” configuration
- Free air cooled cylinders, liquid cooled cylinder heads with integrated pump and expansion tank
- Dry sump forced lubrication with integrated pump and separate oil tank
- 8 valves, automatic adjustment by hydraulic valve tappet
- Dual Capacitor Discharge Ignition (DCDI) with RFI noise suppression
- Garrett turbocharger with automatic waste gate control
- Two Bing Constant Depression (CD) carburetors
- Two electric fuel pumps
- Integrated electric starter
- Integrated reduction gearbox, ratio of 2.43:1 with optional slipper clutch
- Various liquid and oil radiators available
- Many option available such as: Vacuum pump, external alternator, hydraulic propeller governor
- Operates on automotive fuel with a minimum octane rating of 91 (Canadian standards)
- Time Between Overhauls (TBO): 1200 hours*

Performance

Maximum Power
(5 minutes) 115HP / 84.5KW @ 5800 RPM

Maximum Power (sustained) 100HP / 73.5KW @ 5500 RPM

Maximum Torque 106ft-lb / 144NM @ 4900 RPM

Combustion Chambers

Bore 3.13″ / 79.5mm

Stroke 2.40″ / 61.0mm

Displacement 73.91cu.in. / 1211.2cm³

Compression ratio 9.0:1

Weight

Engine with Carburetors 141.1lbs / 64.0Kg

Exhaust System 8.8lbs / 4.0Kg

Air Filter 0.4lbs / 0.2Kg

Liquid Radiator 2.2lbs / 1.0Kg

Oil Radiator 1.1lbs / 0.5Kg

Engine truss assembly 4.4lbs / 2.0Kg

Regulator-Rectifier 0.2 lbs / 0.1Kg

Electric Fuel Pumps 1.5lbs / 0.7Kg

External Alternator 6.6lbs / 3.0Kg

Installed Weight 166.4lbs / 75.5Kg

Weight/Power Ratio 1.45lbs/HP / 0.88Kg/KW