vezérmtengely

A vezérműtengely, or camshaft, is a crucial component in internal combustion engines. Its primary function is to control the opening and closing of the engine's intake and exhaust valves. The camshaft is typically a rotating shaft with a series of lobes or cams arranged around its circumference. As the camshaft rotates, these lobes push on the valve lifters or rocker arms, which in turn operate the valves. The shape and timing of these lobes are precisely designed to ensure that the valves open and close at the correct moments in the engine's combustion cycle, allowing for the efficient intake of fuel-air mixture and the expulsion of exhaust gases.

The rotation of the camshaft is synchronized with the engine's crankshaft, usually through a timing belt, timing chain, or gears. This synchronization ensures that the valve events occur in perfect harmony with the piston's movement. The design of the camshaft, including the lift and duration of the lobes, significantly influences an engine's performance characteristics, such as power output, fuel efficiency, and emissions. Different camshaft profiles are used to optimize engines for various applications, from high-performance racing engines to fuel-efficient passenger cars. In some engine designs, there may be one camshaft per cylinder head, while in others, a single camshaft might control valves for multiple cylinders.