What are the advantages and disadvantages of a continuously variable transmission?
4 Answers
Advantages: simple structure, small size, fewer parts. Disadvantages: compared with traditional automatic transmissions, the cost of CVT is slightly higher. 1. Advantages: (1) Cost: simple structure, small size, fewer parts, the cost after mass production is definitely lower than that of current ordinary automatic transmissions; (2) Working speed ratio range: wide working speed ratio range, easy to form an ideal match with the engine, thereby improving the combustion process, and further reducing fuel consumption and emissions; (3) Efficiency: high transmission efficiency, less power loss, and high economy. 2. Disadvantages: (1) Cost: compared with traditional automatic transmissions, the cost of CVT is slightly higher; (2) Force bearing: from itself, CVT uses steel belts or chains for transmission, the biggest problem is that the force that the steel belt can bear is limited, when bearing large torque, it cannot break or slip, the conditions are still relatively harsh, so CVT is not very stable and durable; (3) Driving experience: CVT may be more inclined to home use, because it drives smoothly and comfortably, without a strong sense of acceleration, so there is not much passion when driving. Theoretically, CVT can fully mobilize the maximum torque of the engine, making the vehicle's acceleration and deceleration performance better than MT and AT transmissions. However, due to current technical limitations, the actual tuning is relatively conservative.
As a commuter who frequently drives in the city, I find the continuously variable transmission (CVT) really worry-free for daily driving. The acceleration process is smooth without any jerking, just like flowing water, which reduces a lot of stress during peak traffic jams. It's also quite fuel-efficient, saving about 10% on fuel costs compared to traditional automatic transmissions, allowing me to save a bit more money each month. However, the downside is the lack of thrilling acceleration and the need to replace components like steel belts during maintenance, which can cost over a thousand yuan, requiring regular checks to prevent unexpected issues. In the long run, comfort and fuel economy are its biggest highlights, making it perfect for someone like me who prefers a steady lifestyle.
As a car enthusiast, I find the advantages of continuously variable transmissions lie in their ability to continuously adjust gear ratios, maximizing the engine's efficient operating range. The acceleration is as smooth as ice skating, and fuel consumption is significantly lower than AT transmissions. However, problems arise when pursuing performance: during rapid acceleration, the RPM stays high with noticeable engine noise, response lags slightly, and it lacks the control pleasure of manual shifting. I later opted for a model with simulated gear shifts to improve this aspect. In terms of maintenance, the steel belt wears out quickly, replacement costs are high, and not all repair shops are skilled in handling them. In summary, they're suitable for daily commuters, but those who value driving experience need to weigh the trade-offs.
I've been driving a CVT car for two years, and as a new driver, it feels quite novel. The startup and acceleration are incredibly smooth, eliminating the jerkiness at traffic lights, and the fuel consumption isn't high either, averaging around 8 liters per 100 km in the city. The downside is the occasional lag in response when trying to overtake, lacking that push-back feeling, which left me a bit disappointed. Now that I'm used to it, I think it's very suitable for beginners—simple to operate and quick to get the hang of. However, I've heard from friends that you need to be careful with belt issues during maintenance.
