The UL260i engine has been developed specifically for use in light aircraft and is manufactured to the highest industry standards with fully electronic ignition and multi-point fuel injection (FADEC) system as standard equipment.
The UL260i motor cylinder bore is 105.6 mm (4.157 in) and piston stroke is 74 mm (2.913 in), compression ratio 8.16:1. The engine is equipped with: dual (redundant) electronic spark ignition system with variable timing; electronic multipoint fuel injection system (pressure and temperature compensated); direct propeller drive and electronic RPM limiter; electric fuel pump and pressure regulator; integrated permanent magnet AC generator with external rectifier-regulator; electric starter.
The output power rating is 97 HP (71 kW) at 3,300 rpm or 85 HP (63 kW) at 2,800 rpm, the maximum torque is 218 Nm (160.8 ft.lbf) at 2,700 rpm.
|Layout||4 stroke, 4 cylinder, horizontally opposed|
|Fuel type||Regular unleaded automotive gasoline with min. 95 Octane RON (87 MON = 91 AKI)|
AVGAS 100LL may also be used if regular fuel is not available.
|Displacement||2.6 l (2,592 cc, 158.17 cu in)|
|Direction of rotation||Clockwise – seen from cockpit|
|Fuel system||Electronic multipoint fuel injection|
|Power output||97 HP (71 kW) at 3,300 rpm or 85 HP (63 kW) at 2,800 rpm|
|Torque output||218 Nm (160.8 ft.lbf) at 2,700 rpm.|
|Dimensions (L x W x H):||540 mm (21.3 in) x 654 mm (25.7 in) x 472 mm (18.6 in)|
|Installed weight||72.3 kg (159.3 lbs)|
Cylinder block and head
The ULPower UL260i aircraft engine has ram air-cooled cylinders and cylinder heads, five bearing crankshaft with surface hardening treatment and additional large thrust bearing (ball bearing type). The blockhead has single central camshaft, pushrods, tappets and over-head valves without hydraulic compensators.
|Cylinder block and head|
|Cylinder bore:||105.6 mm (4.157 in)|
|Piston stroke:||74 mm (2.913 in)|
|Number of piston rings (compression / oil):||2 / 1|
|Number of main bearings:||5|
|Valves:||8 (2 valves per cylinder)|
|Tappet clearance (Cold)|
|Intake valve||0.15±0.05 mm (0.0059±0.0020 in).|
|Engine oil capacity (Refill capacity)||2.5 L (0.66 US gal)|
|Ignition coil||Bosch: FR 5 DTC|
|A2 CZ Elipse Spirit|
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