Auxiliary Power Units (APU) Information

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Auxiliary power units (APUs) provide supplemental power for a variety of purposes such as main engine starting, cabin climate control, engine block heating, and battery charging in various applications including on aircraft, land vehicles, and naval ships. Auxiliary power units provide power in various forms, including electric, pneumatic, or hydraulic. Types of power sources for APUs can be small combustion engines, battery packs, fuel cells, etc.

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Evans Capacitor Company
Caterpillar Electric Power