Boxer Engine-6 cylinder

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Boxer engines are typically used in cars and light air vehicles.Since the center of gravity is kept very low,it enables cars to undertake high speed cornering.The boxer configuration is the only configuration in common use that does not have unbalanced forces with a four-stroke cycle regardless of the number of cylinders, as long as both banks have the same number of cylinders. They do not require a balance shaft or counterweights on the crankshaft to balance the weight of the reciprocating parts, which are required in most other engine configurations.However, in the case of boxer engines with fewer than six cylinders, unbalanced moments (a reciprocating torque also known as a "rocking couple") are unavoidable due to the "opposite" cylinders being slightly out of line with each other. This boxer configuration was first invented by Karl Benz and a major manufactures of these types of engines is Subaru which uses in almost all of its cars.It is different from a V6 with 180 degree configuration and is one of the difficult engines to build.