What does variable valve timing mean?

1 Answers
HarleyLynn
07/29/25 4:16pm
This system adjusts the phase of the engine camshaft through its equipped control and execution system, allowing the timing of valve opening and closing to vary with engine speed, thereby improving air intake efficiency and increasing engine power. The principle of the system: The principle of variable valve timing technology in engines is to adjust the amount of intake (exhaust) and the timing and angle of valve opening and closing based on the engine's operating conditions. This ensures the optimal amount of air intake, improving combustion efficiency. The advantages include fuel efficiency and a high power-to-displacement ratio. The disadvantage is insufficient torque at mid-range speeds. Related models: The VVT in Korean cars is modeled after Toyota's VVT-I and Honda's VTEC technologies from Japan. However, compared to Toyota's VVT-I variable valve timing technology, VVT only involves variable valve technology and lacks timing technology. Therefore, VVT engines are indeed more fuel-efficient than conventional engines, but they still fall short of the fuel efficiency of Japanese cars like Toyota and Honda.
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