What is CVVT?
1 Answers
CVVT is a type of variable valve timing technology in automotive engines. Through electro-hydraulic technology, it controls the opening and closing times of the camshaft, thereby regulating the valve overlap angle. When the vehicle is driving under light load, the system delays the opening of the intake valve to reduce the intake air volume. During uphill climbs or rapid acceleration, when the engine load increases, the system advances the valve opening to increase the intake air volume, meeting the higher load demand. The advantages of the CVVT system include improved air charging, enhanced fuel economy, and increased power performance. Improved air charging: Different engine speeds correspond to different intake valve positions to optimize charging efficiency. At low speeds, where air flow velocity is low, the intake valve should open earlier. At high speeds, with higher air flow velocity, the intake valve should open later. Enhanced fuel economy: Continuous variable valve timing ensures stable cylinder pressure, and combined with improved charging efficiency, the mixture of fuel and air becomes more thorough, leading to more complete combustion of the combustible mixture and reduced fuel consumption. Increased power performance: Continuous variable valve timing technology maintains cylinder pressure while increasing the quality of the air charge, resulting in more complete combustion of the combustible mixture, thereby significantly boosting power performance.
