What does the engine model DVVT mean?

[StevenAnn]

DVVT engine refers to an engine that adopts variable valve timing technology for both intake and exhaust. More information about DVVT engines is as follows: 1. DVVT engines are produced in Japan. 2. DVVT engines are energy-saving and environmentally friendly: they reduce the overlap of intake and exhaust, ensuring stable combustion; reduce intake loss, improve fuel consumption, and increase fuel economy by 24%; effectively reduce emissions of hydrocarbons and nitrogen oxides; the engine is more powerful, with a power increase of 12%. 3. DVVT engines are an extension and development of VVT engines: DVVT engines can simultaneously adjust the intake and exhaust valves, featuring excellent characteristics of high torque at low speeds and high power at high speeds.