Energy & Green Tech

Novel smart solar-powered freezer truck unveiled in Hong Kong

The transport sector is a significant contributor to greenhouse gas emissions in Hong Kong, accounting for 19% of total emissions. Supporting the development of green transport can help reduce air pollutant emissions. The ...

Engineering

NoiseTracker aims to reduce road noise pollution

Nick Ferenchak isn't just an assistant professor in the Gerald May Department of Civil, Construction & Environmental Engineering at The University of New Mexico, he's also the president of Not-A-Loud, a local company creating ...

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Engine

An engine is a mechanical device that produces some form of output from a given input. An engine whose purpose is to produce kinetic energy output from a fuel source is called a prime mover; alternatively, a motor is a device which produces kinetic energy from other forms of energy (such as electricity, a flow of hydraulic fluid or compressed air). A motor car (automobile) has a starter motor and motors to drive pumps (fuel, power steering, etc) – but the power plant that propels the car is called an engine. The term 'motor' was originally used to distinguish the new internal combustion engine -powered vehicles from earlier vehicles powered by a steam engine (as in steam roller and motor roller).

Military engines included siege engines, large catapults, trebuchets and battering rams.

This text uses material from Wikipedia, licensed under CC BY-SA