What does VVT mean?

[StLuke]

Variable Valve Timing is a technology used in automotive piston engines. Here are some related introductions about VVT: 1. Principle: Based on the engine's operating conditions, it adjusts the intake (exhaust) volume, valve opening and closing time, and angle to achieve the optimal amount of incoming air, improving combustion efficiency. The advantages are fuel efficiency and a high power-to-weight ratio; the disadvantage is insufficient torque at mid-range speeds. 2. Improving efficiency and increasing power: VVT technology can adjust the overlap time and timing of the engine's intake and exhaust systems (partially or entirely), reducing fuel consumption and improving efficiency. The system adjusts the phase of the engine camshaft through its control and execution system, allowing the valve opening and closing times to vary with engine speed, thereby improving air charging efficiency and increasing engine power.