SP-180 SRE APU Demonstrator

An Auxiliary Power Unit (APU) is a small, self-contained power source that is used in land and rail vehicles as well as in general aviation or maritime applications. These units provide an independent power supply that allows the main engine to remain switched off while electrical devices continue to operate. Based on the SP-180 SRE-hybrid Wankel engine, Sky Power International offers the SP-180 SRE APU demonstrator mobile APU test and evaluation system.

The system runs on gasoline. A 48 V DC power supply is required to operate the demonstrator. Exhaust and silencer, engine control unit (ECU), starter and alternator (12 KW constant), EFI, fuel pump, an electrical system consisting of power supply and starter control, a thermal system for oil as well as a cooling circuit including pumps and a heat exchanger are installed as standard in the SP-180 SRE APU demonstrator. The compact design makes the entire system ideal for mobile use. With the installed SP-180 SRE hybrid Wankel engine, the APU demonstrator works very efficiently. Thanks to the compact design of the engine, the test and evaluation system is very space-saving, lightweight and extremely smooth-running. Furthermore, Wankel engines can also reach higher speeds with low vibrations.