What does DVVT engine mean?
2 Answers
DVVT engine refers to the Dual Variable Valve Timing technology. Engines equipped with DVVT technology are more efficient, energy-saving, and environmentally friendly compared to those with only intake valve timing technology (VVT). DVVT technology can reduce fuel consumption by 5%, while increasing power output by 10%, achieving performance indicators equivalent to a 2.0-liter displacement engine, with exhaust emissions meeting the National IV standard. By controlling the air-fuel mixture ratio in the engine combustion chamber to reach the optimal level, DVVT technology also significantly improves idle stability, resulting in better comfort. An engine is a machine capable of converting other forms of energy into mechanical energy, and its types include internal combustion engines, external combustion engines, electric motors, etc.
In the automotive world, the DVVT engine refers to Dual Variable Valve Timing technology. It dynamically adjusts the opening and closing times of the intake and exhaust valves through an electronic control system, optimizing engine performance at different speeds. For example, it closes the valves early at low speeds to enhance torque and delays them at high speeds to boost power output. This results in smoother power delivery, approximately 10% improved fuel efficiency, and reduced harmful emissions. Modern cars like the Toyota Corolla use this technology, but with more electronic components, it's prone to malfunctions, and repairs can be costly. From my experience in car repairs, I often see owners neglecting the maintenance of the control unit. I recommend checking it every 20,000 kilometers to prevent minor issues from becoming major problems. Overall, this technology is both practical and intelligent, representing progress in engine development.
