Dual Variable Valve Timing
D-VVT engine is the continuation and development of VVT, it solves the technical problems that VVT engine cannot overcome.
DYYT stands for Dual Variable Valve Timing . It can be said to be the advanced form of the current variable valve timing system technology.
DVVT engine is the most competitive new mainstream based on the comprehensive upgrade of VVT engine technology. It has been used in high-end models like BMW 325DVVT. Although the principle of the DVVT engine is similar to that of the VVT engine, the VVT engine can only adjust the intake valve, while the DVVT engine can adjust the intake and exhaust valves at the same time. The Roewe 550 1.8LDVVT can also achieve a certain angle range according to the different engine speeds. The internal valve phase is linearly adjustable and has the excellent characteristics of low revolutions, high torque, high revolutions and high power.
The D-VVT engine uses a similar principle to the VVT engine, and uses a relatively simple hydraulic cam system to achieve its functions. The difference is that the VVT engine can only adjust the intake valve, while the D-VVT engine can adjust the intake and exhaust valves at the same time. It has the excellent characteristics of low revolutions, high torque, high revolutions and high power. leading position. In layman's terms, just like human breathing, the ability to control "exhale" and "inhale" rhythmically as needed, of course, has higher performance than just controlling "inhale".