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High Performance EPS Diesel Engine Progresses

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Key Takeaways:

  • Engineering Propulsion Systems (EPS) has completed phase one flight testing of its Graflight V8 diesel engine for general aviation, tested by pilot Dick Rutan.
  • The company is expanding its facilities and staffing in New Richmond, Wisconsin, as it continues development.
  • The Graflight V8 engine, designed for 320-420 hp aircraft, promises a 40% fuel savings, potentially leading to a 50% range increase or 40% payload increase.
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Engineering Propulsion Systems (EPS) continues to make progress on the development of its clean-sheet Graflight V8 diesel engine for the general aviation market. The phase one flight testing program has now been completed and the company has added staff, production capabilities and new tooling to its facility in New Richmond, Wisconsin.

Built around eight cylinders, the EPS Graflight engine is designed for high performance airplanes running in the 320 to 420 horsepower range. “The progress has been encouraging,” said EPS president Michael Fuchs. “We have a lot of work in front of us, but the early results have confirmed that the ideas and reality are in sync.”

Pia Bergqvist

Pia Bergqvist joined FLYING in December 2010. A passionate aviator, Pia started flying in 1999 and quickly obtained her single- and multi-engine commercial, instrument and instructor ratings. After a decade of working in general aviation, Pia has accumulated almost 3,000 hours of flight time in nearly 40 different types of aircraft.

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