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a new-design flat 8 engine, to replace existing 320ā420 hp (240ā310 kW) general aviation gasoline engines, with the aim of reducing fuel costs by 45%. EPS started work on the design in 2006, a process that took five years. The engine was first flown in May 2014, first exhibited at the 2017
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of less than 0.32 lb/(hpā
h) (195 g/kWh), compared to typical avgas engines with 0.42 lb/(hpā
h) (255 g/kWh). It is expected that the
Graflight V-8 will burn under 11 US gal/h (42 L/h) of fuel at 65% power.
216:. At normal 75% cruise power, the Graflight V-8 consumes 77 lb/h (35 kg/h) of fuel, whereas the Continental TSIO-550-E burns 110 lb/h (50 kg/h), a reduction of 30%.
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As a direct comparison, the 350 hp (261 kW) version of the
Graflight V-8 engine will weigh 30 to 50 lb (14 to 23 kg) more than the comparable
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212:-E (498.4 lb (226.1 kg) dry). It will cost 30% more, but with a higher time between overhaul and lower fuel burn, it will have lower
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investors and planned that a new demonstrator should be ready in the first quarter of 2019. The production version of the engine was shown at
173:, and crankcase to improve reliability. At 650 lb (290 kg), it weighs 40 to 50 lb (18 to 23 kg) more than a conventional
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Later in 2017 the testing progress was delayed by insufficient funding. By July 2018 it had completed 25 hours of flight testing on a
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engine, but with 30-50% better fuel economy. Its low vibration levels allow the use of composite or aluminum
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in April 2019 and work continued on environmental and block testing towards the goal of type certification.
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9.74 to 17.55 US gal/h (36.9 to 66.4 L/h) from 210 to 350 hp (157 to 261 kW)
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The design is a 320ā450 hp (240ā340 kW), 4.3-liter engine with steel pistons,
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Unable to obtain the needed financing to continue operations, the company filed for
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446:"EPS Making Progress on Certification of Vision 350 Flat-V Diesel Aero-Engine"
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for cooling. It should be 30-40% more expensive to purchase than a comparable
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146:, small boats or troop carriers. The engine is specifically targeting the
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certification was expected at that time by the end of the year.
461:"DIESEL ROUNDS THE BEND NEW FUNDS SPUR NEXTGEN DIESEL ENGINES"
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airplane. At that point the company hoped to attract
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0.315 to 0.34 lb/(hpā
h) (192 to 207 g/kWh)
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The
Graflight V-8 is a liquid-cooled, flat V-8 with
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114:crankcase for better strength and durability than
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428:"EPS Continues To Make Progress on Aero Diesel"
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490:"EPS Diesel Progressing Toward Certification"
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208:-AE2A (595 lb (270 kg) dry) or
404:"EPS Diesel Engine Nears Certification"
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524:from the original on August 12, 2020
488:Addison Schonland (March 26, 2018).
459:Thomas B Haines (October 5, 2015).
448:(Press release). EPS. July 9, 2013.
122:to 3,000 hours. It is managed by a
65:Michael Fuchs and Steven Weinzierl
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512:O'Connor, Kate (August 11, 2020).
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477:. Engineered Propulsion Systems.
388:. Engineered Propulsion Systems.
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198:brake specific fuel consumption
134:. It is intended to be used in
16:American diesel aircraft engine
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402:Pia Bergqvist (July 7, 2017).
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319:Jet A, JP-8 or straight diesel
275:Specifications (Graflight V-8)
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118:at similar weight, increasing
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567:2010s aircraft piston engines
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97:Engineered Propulsion Systems
95:developed by Wisconsin-based
56:Engineered Propulsion Systems
426:Mark Huber (July 25, 2018).
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259:protection in August 2020.
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514:"EPS Files For Bankruptcy"
166:as possible applications.
126:ECU and can run on Jet A,
358:Specific fuel consumption
338:350 hp (261 kW)
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32:Liquid-cooled V-8 piston
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91:The Graflight V-8 is an
562:Aircraft diesel engines
286:General characteristics
112:compacted graphite iron
296:diesel aircraft engine
120:time between overhauls
93:aircraft diesel engine
34:diesel aircraft engine
257:Chapter 11 bankruptcy
250:AERO Friedrichshafen
210:Continental TSIO-550
156:GippsAero GA8 Airvan
192:The engine's 17:1
79:Major applications
386:"Engine Overview"
351:Fuel consumption:
343:Compression ratio
194:compression ratio
138:airplanes, small
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136:general aviation
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323:Cooling system:
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242:Cirrus Aircraft
224:EPS set out to
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214:operating costs
175:aircraft engine
171:connecting rods
144:military drones
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41:National origin
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541:External links
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475:"Fuel Economy"
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526:. Retrieved
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302:Displacement
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263:Applications
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148:Robinson R44
130:or straight
110:pistons and
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330:Performance
294:V-8 piston
269:Cirrus SR22
246:Fortune 500
220:Development
140:helicopters
132:diesel fuel
84:Cirrus SR22
556:Categories
528:August 12,
494:AirInsight
432:AIN online
367:References
317:Fuel type:
311:Components
187:propellers
164:Cessna 206
160:Cessna TTx
70:First run
280:Data from
62:Designer
522:Archived
179:radiator
116:aluminum
463:. AOPA.
226:certify
102:Design
518:AVweb
292:Type:
183:avgas
124:Bosch
108:steel
73:2014
29:Type
530:2020
347:17:1
306:4.3L
233:and
162:and
128:JP-8
282:EPS
235:FAA
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