muutuvventiilide
Muutuvventiilide, often translated as variable valves or variable valve timing (VVT), refers to a system used in internal combustion engines that allows for the timing of the intake and exhaust valves to be altered. This adjustment is typically controlled by the engine's control unit (ECU) based on various operating parameters such as engine speed, load, and temperature. The primary goal of VVT is to optimize engine performance, fuel efficiency, and emissions across a wider range of operating conditions than a fixed valve timing system can achieve.
By advancing or retarding the timing of valve opening and closing, VVT can improve volumetric efficiency. For
Different VVT technologies exist, including continuously variable valve timing (CVVT) and discrete variable valve timing (DVVT).