Enterprise DSW-6


Manufactured by Enterprise Engine Company
Year 1937
Model DSW-6

Engine:
6 Cylinder Diesel engine
10" bore, 13" Stroke
Piston displacement of 6126 cu. in
220 horsepower at 450 RPM
Weight 33,100 LBS
Price $23,600.00 installed

Generator:
Westinghouse 16 pole, 150 kW, Three phase, 480 volt AC
Exciter 4.5 kW, 126 volt DC

Pictures of the Enterprise DSW-6 project

History:
This is one of three generators that was used for backup power at Palomar Observatory from 1938 to 1996. Time on generator after 58 years at Palomar was only 4800 Hours.

Donated to the Museum in 1996 this engine was one of only two model "W" engines ever built with enclosed valve gear. Almost all model "W" engines built were for use on marine applications and carried a DMW-4 or -6 designation. All of the DMW engines had exposed valve gear. Only a handful of DSW engines were made. This one was the second and the last built with special enclosed valve gear. We believe the other DSW-6 built with enclosed valve gear was S/N 6109 with an original owner designated in the listing as Dunn Baker. We do not believe this engine exists any longer. It appears that this may well be the only existing version of the engine.

Wikipedia history of Enterprise Engine and Machinery Company


This picture was taken in 1938 of the engine when it was installed at Palomar observatory.
The fate of the two DSL-4 engines in the picture is unknown.

Museum volunteers removing the engine from palomar observatory's power house in 1996

 



In 2001 after resting for five years the engine was started for the first time at the museum