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An engine, or motor, is a machine designed to convert one form of energy into mechanical energy. Heat engines, including internal combustion engines and external combustion engines (such as steam engines) burn a fuel to create heat, which then creates a force. Electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air and others -such as clockwork motors in wind-up toys-use elastic energy. In biological systems, molecular motors, like myosins in muscles, use chemical energy to create forces and eventually motion.
Related Journals of Engine
Applied Mechanical Engineering, Aeronautics & Aerospace Engineering, Advances in Robotics & Automation, International Journal of Engine Research, International Journal of Vehicle Information and Communication Systems.