The diesel engine, also known as an inline or turbo engine, is a hybrid of two different engine types: piston-driven and turbine-driven.
It produces power by pumping air through a compressor, which then produces electricity by pumping the air back into the engine, which in turn produces heat.
A new generation of diesel engines are now available in Australia, with a range of capacities ranging from a 20kW engine to 100kW engines.
Read more: Indoor skymaking engine, propane engines indoor Outboard engines can run up to 80,000km indoors, and are often used in large industrial or commercial operations, such as construction, retail, transport and warehousing.
A wide range of indoor propane-powered engines can be found in Australia.
They include the R-16, which is a diesel-powered engine for outdoor use.
Read More: Indoors skydive engine,propanes indoor Outboarding engines can go as high as 80,00km indoors.
A few models can run as high up as 300,00 kilometres.
A range of diesel-engine models are available for indoor use, with the most popular being the Cummins diesel.
Some models have been designed specifically for outdoor operation.
Outboard engine prices start at $US6,500, while indoor propanes engines can cost upwards of $US4,500.
Diesel engines cost $US14,500 per 100kWh, while propane generators can cost $5,500 and more.
Propane engines can produce up to 400kW, but a propane generator needs to be mounted outside to get maximum output.
A diesel engine produces less power than a diesel generator, but produces a higher temperature and more energy.
Outgoing air is pumped into the compressor to turn the engine on and off.
Indoor propanes are also much quieter than a combustion engine.