What does ivtec mean?

[SanIris]

ivtec system is the English abbreviation of Honda's intelligent variable valve timing and lift electronic control system. The engines of new Honda cars are generally equipped with the ivtec system, which can continuously adjust the valve timing and also regulate the valve lift. The working principle of ivtec is: when the engine shifts from low speed to high speed, the computer automatically directs the engine oil to the small turbine inside the intake camshaft drive gear. Under the pressure, the small turbine rotates a certain angle relative to the gear housing, thereby causing the camshaft to rotate forward or backward within a 60-degree range. This changes the timing of the intake valve opening, achieving the purpose of continuously adjusting the valve timing.