A camshaft phaser is part of the (VVT) system. It adjusts the position of the camshaft. They do so by advancing or retarding the timing in the engine, based on whether you need power or fuel economy.
Variable Valve Timing (VVT) – What All Car Owners Should Know
First, there is a huge advantage with, variable valve timing (VVT). Because, all the factors traditionally associated with a given camshaft grind, are no longer fixed. As a result, making it possible to change valve […]