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The fuel pump is a mechanical or electrical system that draws fuel from the tank and delivers it to the injectors or carburetor at a specified pressure and flow rate in internal combustion engine systems. This pump enables efficient combustion and sustained performance by ensuring a consistent fuel supply to the engine.Structure and Operating PrincipleThe fuel pump system ensures that fuel is delivered in the correct quantity, at the right pressure and timing as required by the engine. In diesel

Piezoelectric sensor is a device that uses the piezoelectric effect to convert a mechanical stress such as pressure acceleration strain or force into an electrical signal or conversely to convert an electrical signal into a mechanical vibration. These sensors are also classified as "transducers" because they transform one form of energy into another. The piezoelectric phenomenon is based on the ability of certain crystals and ceramic materials to accumulate an electric charge on their surfaces w

Ballista is a device designed to launch heavy stones or other objects over long distances. In the past, it was used in warfare to breach city walls or destroy fortresses. Its operating principle is simple: force is accumulated using a lever, spring, or ropes, then released suddenly to propel the stone forward.How Did the Ballista Emerge?The ballista is believed to have first appeared in China. Chinese sources mention the use of ballistae as early as the 5th century BCE. It later spread to the We

A steam locomotive is a type of train powered by steam. Fuels such as coal are burned in the boiler section to convert water into steam. High-pressure steam drives pistons, which rotate the wheels and propel the train forward. The used steam is expelled through the chimney.HistoryThe first steam locomotives were built in England in the early 1800s. The locomotive named “Rocket,” developed by George Stephenson, began operation in 1829 on the Liverpool–Manchester line. This system quickly spread t