Packard Radial Diesel Aircraft Engine

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Packard Radial Diesel Aircraft Engine - DR 980

circa - 1928

Type - 4-stroke cycle diesel

Cylinders - 9-static radial configuration

Cooling - Air

Fuel injection - Directly into cylinders at a pressure of 6000 psi

Valves - Poppet type, one per cylinder

Ignition - Compression-glow plugs for starting -air compression 500 psi at 1000 F.

Fuel - Distillate or "furnace oil"

Horsepower - 225 at 1950 rpm

Bore and stroke - 4 13/.16 x 6 in.

Compression ratio - 16:1---maximum combustion pressure 1500 psi

Displacement - 982 cu in.

Weight - 510 lb without propeller hub

Weight-horsepower ratio - 2.26 lb hp

Where manufactured - U.S.A.

Fuel consumption - .46 lb per hp/hr at full speed

Fuel consumption - .40 lb per hp/hr at cruising

Oil consumption - .04 lb per hp/hr

Outside diameter - 45 - 11/16 in. Overall length - 36 - 3/4 in.

Optional accessories - Starter---Eclipse electric inertia; 6 volt

Generator -Eclipse type G-1; 6 volts. Special Series no. 7

 

The specifications from SMITHSONIAN ANNALS OF FLIGHT,
 
The First Airplane Diesel Engine Packard Model DR-980 of 1928
 
Robert B. Meyer 1964

 

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Last modified: 04/06/09
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