Kitplane Engines - UL Power

The UL Power series of aircraft engines is a newer offering that is starting to get some traction in the Kitplane community.  UL Power series engines are a conventional design with air-cooled, direct drive, horizontally opposed four-cylinder layout.  This truly modern engine features FADEC (Full Authority Digital Engine Control) with multi-point electronic fuel injection, and dual electronic ignition (with variable timing), excellent power-to-weight ratio, and high fuel efficiency.  UL Power has several lightweight models ranging in power from 97 hp to 130 hp.  The modern FADEC equipped UL Power 260 and 350 series of engines can be run on AVGAS or MOGAS.

UL Power Details and Highlights;

The design of this new line of engines was based around critical issues such as reliability, light weight, excellent performance, a direct propeller drive and modern, proven technology:

• Modern Technology four-stroke, air cooled, four-cylinder opposed engine
• Dual (redundant) electronic spark ignition (variable timing)
• Multi-point electronic fuel injection with automatic altitude and temperature compensation
• Electronic RPM limiter
• Direct propeller drive
• Wet sump forced lubrication with integrated pressure regulator
• 5 bearing crankshaft with thrust ball bearing
• Ram air cooled cylinders and cylinder heads
• High fuel efficiency
• No carburetor icing problems
• Excellent power to weight ratio
• Electric fuel pump and pressure regulator to eliminate vapor lock and facilitate starting even under adverse conditions

A video overview of UL Power components - http://www.youtube.com/watch?v=DN7I4XVBsKQ&feature=player_embedded

Summary of Engine Model Specifications:		UL260i	UL260iS	UL350i	UL35iS
	Displacement (cc / cu. in.)	2592/158	2592/158	3503/214	3503/214
	Compression Ratio	8.16:1	9.1:1	8:1	8.7:1
	Torque (max. ft. lbs.)	152.7	177	225	236
	Power (max HP)	97	107	118	130
	Weight (installed, lbs.)	159	159	172.8	172.8

Several videos featuring UL Power aircraft engines;

UL350is ground run up - http://www.youtube.com/watch?v=2zmR1po0KfY&feature=player_embedded

CH 650 B with UL350is in testing - http://www.youtube.com/watch?v=zoJnl8XwDtE&feature=player_embedded

AvWeb features the UL260i - http://www.youtube.com/watch?v=DYm7pUR_I6A&feature=related

STOL CH 750 with UL260i in testing - http://www.youtube.com/watch?v=ngN3y7kIs4g&feature=related


Reference Section -

UL Power Factory - http://www.ulpower.com/

UL Power North America - http://www.ulpower.net/

Zenith Aircraft UL Power Page - http://www.zenithair.com/kit-data/zac-ulpower.html