What is CVVT continuously variable transmission system?

CVVT is the abbreviation of English Continue Variable Valve Timing, which is translated into Chinese as continuously variable valve timing mechanism.

Variable valve timing system. Today's high-performance engines are generally equipped with this system. The system adjusts the phase or valve stroke of the engine cam through the equipped control and execution system, thus optimizing the engine valve distribution process.

Because the valve timing angle has obvious influence on the economy and power of the engine at high speed and low speed, the intake air volume and efficiency can be improved by making full use of the intake inertia at high speed, so the valve opens early and closes late, and the opposite is true at low speed. Most engines now have this technology.

Extended data:

An engine equipped with continuously variable valve timing technology has two main advantages.

Firstly, the best combustion efficiency is ensured, and the contradiction of valve timing between high and low speed, heavy load and light load is solved, so that the torque and power of the engine are further improved, and the "soft driving at ordinary times" and "fierce driving in wartime" are kept in the best state, while the exhaust emission, idle speed stability and low speed stability are improved, and the idle speed is reduced.

Second, better fuel economy brought by more complete combustion and stronger power performance.

References:

Cvvt_ Baidu Encyclopedia?