What is a DVT transmission?
3 Answers
Currently, there is no DVT transmission, only CVT transmissions and DCT transmissions. A DCT transmission is a dual-clutch transmission, while a CVT transmission is a continuously variable transmission. These two types of transmissions have different structures and operate on different principles. The dual-clutch transmission is a product developed based on manual transmissions, and its structure is similar to that of a manual transmission. A transmission, also known as a gearbox, is an automotive component used to alter the speed and torque from the engine, and it can either fix or change the gear ratio between the output and input shafts. The transmission consists of a gear-shifting mechanism and a control mechanism, and it can be categorized into stepped, continuously variable, and integrated types. Its functions include enabling reverse driving, interrupting power transmission, and changing gear ratios.
I always thought the name DVT was quite mysterious, until I later learned it stands for Direct-Shift Continuously Variable Transmission, known in Chinese as 直接换挡无级变速器 (direct-shift CVT). It's a cutting-edge technology developed by Toyota, essentially an upgraded version of a CVT. Traditional CVTs rely on belts or chains to transmit power, which can slip during acceleration and result in higher fuel consumption. However, DVT cleverly incorporates a launch gear—using gears for power transmission at low speeds to provide instant response, then switching back to CVT mode at higher speeds for smooth and fuel-efficient operation. This technology is featured in many Toyota models, such as the Corolla or Levin. After test-driving one, I found the acceleration smooth and fuel-efficient, especially suitable for congested urban driving. DVT addresses several pain points of traditional transmissions, such as sluggish starts and fuel wastage. Overall, DVT represents an advancement in transmission technology, combining reliability and efficiency.
I was deeply impressed by driving a car equipped with a DVT transmission. Its full name is Direct Shift Continuously Variable Transmission, primarily used by Toyota, commonly found in models like the Camry. At low-speed starts, it initially uses a small gear for quick response, moving immediately upon pressing the accelerator without any sluggishness; then it transitions to continuously variable transmission, making the ride extremely smooth with almost no noticeable shift shocks. The fuel-saving advantage is particularly evident during high-speed cruising, saving me a lot on monthly fuel costs. However, the engine noise can be a bit loud during rapid acceleration, possibly due to the quick rise in RPM. Overall, the driving experience is very comfortable, especially practical in traffic jams, allowing for smooth starts without any stuttering. I think this transmission is perfect for daily commuting, making driving simpler and more economical.
