The CPS AVDS-1790-9A Series
engine is an air-cooled 90 degree upright Vee design, 12-cylinder turbocharged
diesel engine - rated at 1200 gross horsepower at 2400 rpm. Air cooling
for engine cylinders, as well as the engine and transmission oil coolers
and induction air aftercoolers, mounted rearward of the engine oil
coolers, is provided by two engine-driven fans mounted in the center
of the Vee. Extensive use of aluminum components throughout the engine
provides a high power-to-weight ratio.
The AVDS-1790-9A is a high horsepower engine. It is
an open-chamber engine incorporating air cooling which eliminates
the maintenance burden of liquid cooling systems.
The AVDS-1790-9A Series engine has been designed and
developed for use in the combat environment. It is completely waterproof
and can be totally submerged with only the addition of combustion
snorkels. Cold starting has been simplified by the addition of an
automatic intake flame heater. The cooling system has been designed
for successful operation at ambient temperatures up to 125 degrees
F.
The AVDS-1790-9A engine is an up-powered version of
the AVDS-1790-2C engine with over 70 percent commonality of parts
between the two diesel powered engines.
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