You may have heard about continuously variable transmission or CVT while buying a new car. This is a type of transmission which is different from the conventional transmission. Today the vehicles are meant to be more comfortable, safe, and highly fuel economy. Today there are various technological advancements in automobiles.
How does a CVT work?
The standard automatic transmission has various gears. These gears mesh with each other gears to give different gear ratios. This gear ratio determines the torque output and revolutions per minute (RPMs) of any vehicles.
However, this is not the case with the continuous variable transmission system. CVT uses a simple setup to transmit power. It uses two cone-shaped pullies and a belt. One pulley is connected to the engine and another one is connected with the wheels. Both the pullies are connected via steel or composite belt.
The cone pullies are designed in such a way that they have two different halves. While one part can slide along the axis, another end remains fixed. The sliding of one half of pulley creates V-shaped grooves of various sizes. The movement of the half of pulley is governed by the weights inside it, which slides the pulley along its axis due to centrifugal force.
Also, the movement of the pulley can be made by the hydraulic system. A belt runs on the grooves produced in the pullies. The different size of grooves allows the belt to run on the higher gear or the lower gear.
Difference between CVT and Standard transmission?
A CVT transmission system uses two pullies that can run a belt on different diameters, thus gives infinite gear ratios. This allows the flow of power from the engine to wheels without any interruption unlike in standard automatic transmission system where we feel jerk very often while accelerating or de-accelerating.
As a normal car has 5 or 6-speed gears, the gears shift automatically from first to second and so on. But in the CVT system, there are unlimited numbers of gear ratios. Hence, the car always has the most efficient RPMs at any speed.
Apart from these benefits, there are some problems too in the CVT transmission.
CVT Transmission Problems
We have already discussed the benefits of a CVT transmission system, but due to its components and structure, it also has some negative sides. Some of them are
Sudden loss of acceleration
This is one of the main concerns of a CVT transmission vehicle. It doesn’t withstand the power like a manual or an automatic vehicle holds up to.
Cost of repair and maintenance
A CVT system comes at a high price tag. Also, the replacement cost is huge on replacement when they are failed. They don’t last as long as the standard transmission system.
In conclusion, we can say that CVT is a much-needed transmission system in your vehicle when you are looking at the fuel economy. On the other hand, when you need a vehicle that delivers the power as soon as you kill your acceleration pedal, the CVT lags behind the automatic or manual transmission system.