What Are Auxiliary Power Units and How Do They Work?
Auxiliary power units (APUs) supply energy to the vehicle for purposes other than propulsion. These are used on aero planes, ships, and some land vehicles to perform tasks such as starting the main engine, heating the engine block, and charging the battery. The device generates energy in the form of electricity, pneumatics, or hydraulics.
Types
· Battery
· Hydraulic accumulator
· Engines that run on diesel, gas, or propane.
Applications
· Select stationary operations
· Trolley buses
· Military vehicles
· Commercial conveyance
· Luxury cars
· Recreational vehicles (RVs) and campers
· Spacecraft
· Airports
Operations
The APU configuration is determined by your work requirements. When an aircraft's engine is idle, this technology assists in starting and distributing power. The fuel is burned by rotating a pneumatic turbine and a fuel pump in conjunction with electric sparks. When you start a second engine, the active element takes the place of the APU.
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