Visiting with Jan
Eggenfellner at Air Venture '01
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After years of research & study, I have chosen Jan's "Subercharged Subaru" FWF (firewall wall forward) engine package for N7676D. There is no doubt that the aviation industry will soon transition to a modern, state of the art power plant such as this alternative from Eggenfellner Aircraft, Inc.
The 2,457 cc boxer Subaru based aircraft engine produces 165 horsepower at 5600 rpm and 300 LB-ft of torque at 4000 rpm. 75% cruising power is at 4,200 rpm. The 2.5 four-cylinder engine is a horizontally-opposed engine. This boxer engine has been perfected to capitalize on all the advantages of this design.
The basic layout of the engine block and cylinders is identical to that of the traditional aircraft engines in that they are horizontally opposed. The main difference being that the SUBARU is liquid-cooled and the others are cooled by air. Air cooled engines are forced to run within a large temperature range, making it necessary to provide large internal clearances. The SUBARU, being liquid cooled, maintain exact tolerances and tight clearances within the engine for efficient operation and long life. The heart of this system is the electronic control computer (ECU) which manages fuel injection and ignition systems and features learning, self-diagnosis, limp-home and anti-knock capabilities. The Eggenfellner Subaru uses a sequential multi-point fuel-injection system for improved performance, better fuel efficiency, flyability and reliability.
There is no mixture control in the airplane so leaning is automatic, there is no primer because priming is not required for starting, there is no carburetor heat control because with the fuel injection it is not necessary, there is no need to monitor CHT or EGT gauges because water cooled engine with automatic leaning don't need them and finally, even with the constant speed propeller www.climbandcruise.com there is no propeller control required. Dual electrical systems with dual batteries, dual fuel pumps and coils contribute to safety by providing back up to mechanical components.
It really is a
great engine package, just take a look. . .
