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V engine Definition from Encyclopedia Dictionaries & Glossaries
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V engine
A V engine is a common configuration for an internal combustion engine. The pistons are aligned so that they appear to be in a V when viewed along the axis of the crankshaft. The V configuration reduces the overall engine length and weight compared to an equivalent straight engine.
In 1896, Karl Benz patented his design for the first internal combustion engine with horizontally opposed pistons. Usually, each pair of corresponding pistons from each bank of cylinders share one crank pin on the crankshaft, either by master/slave rods or by two ordinary rods side by side. Some authorities even regard this as a distinguishing feature of a true V engine, and for example divide flat engines into boxer engines which do not share crank pins in this way, and 180° engines which do. On the other hand, some important V-twin engine designs have two-pin cranks. However, in German, these engines are all identified as boxermotors.
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