100 - 300hp piston engine UL350iHPS

50 - 100kgfor helicopter4-stroke

This powerful engine is developed for helicopters and gyrocopters and is equipped with a forced cooling system. While hoovering the natural airflow is not sufficient to cool down the cylinder heads. So a fan driven by the crankshaft, blows air along the aluminium air boxes. Thanks to the modified camshaft and inlet collector the UL350IHPS generates up to 150HP at 3500 rpm. This forced cooling system has an integrated oil radiator. The forced cooling system can be installed on all ULPower engines which mean they can all be used in helicopter applications. Dual (redundant) electronic spark ignition (variable timing) Electronic multipoint fuel injection (pressure and temperature compensated) Electronic RPM limiter Direct propeller drive 5 bearing crankshaft with surface hardening treatment and additional large thrust bearing (ball bearing type) Single central camshaft Push rods, tappets and OHV (hydraulic compensators have not been used) Wet sump forced lubrication with integrated pressure regulator Ram air cooled cylinders and cylinder heads Integrated permanent magnet AC generator, external rectifier-regulator Electric starter Electric fuel pump and pressure regulator to eliminate vapor lock and facilitate starting even under adverse conditions Displacement - 3503 cc [213.77 cu in] Bore - 105.6 mm [4.157 in] Stroke - 100 mm [3.937 in] Compression Ratio - 8.7 : 1 Firing Order - 1 - 3 - 2 - 4 Direction of Rotation - Clockwise - Pilot's view Torque (ISA conditions) - 315 Nm (232 ft.lbs) @ 2800 rpm