box-CVT came to replace the standard automatic and manual.It is often confused with type-Tronic, however, are two different things.What is this box?
variator - a manual transmission, which is capable of continuously and smoothly change the gear ratio control in a certain range.At the same time it changes automatically or manually.
variator is used in devices that require a stepless gear ratio.It may be motorcycles, cars, snowmobiles, scooters, mixers, machine tools, conveyors and others. The stationary machines commonly used adjustable electric drive.
simplest form variator
Take two cylinders (for example, two simple pencil) and place them at a small distance from each other.Pull the elastic band and they start to turn one of them.You may notice that immediately begins to spin and the other a pencil at the same rate.But if the cylinders are of different diameters, the picture is quite different.One will spin slower and the other - faster.Box-variator is arranged according to this principle.Only here the diameter of the "cylinder" is constantly changing.
belt variator
course, a belt of rubber or cloth not be served and a couple of hundred kilometers in a box.Belts in the variator have a very complex structure.Commonly used metal type-setting tape - covered or just a set of trapezoidal plates, the edges of which are in contact with the pulleys.Also, as the belt variator can be a plate and a wide range of steel, in contact with the edges of the cone.It is this chain installed in some cars Audi.
For lubrication use a special liquid that changes phase state under relatively strong pressure (it occurs at the contact point of the belt pulley).For this reason, the circuit transmits a significant force without slipping.
How exactly box-CVT transmission will change the number at a set speed, independent of the control program.If the acceleration on an ordinary car, we each untwist the motor speed and then proceed to the next, then disperse in a car with a CVT engine is running at the same speed.The ratio of the gear changes smoothly.
Many people now know how the automatic transmission.But riding in a car with a CVT is a little different.First of all, this creates an unusual feeling.During acceleration the engine out of the car at high speeds and remain on them for speed dialing, howling like a vacuum cleaner.But it increases the rate of acceleration, since it takes no time to switch steps.This advantage, which has a box-CVT.
box-CVT: reviews
Pros: light weight, work at full throttle without any jerks, fuel economy, long life with proper care, comfort (because there is no transmission), there is no loss in dynamics can be quicklyRiding.
Cons: expensive repair and maintenance, small resource due to incorrect operation or in his absence, and that resource is less than the automatic transmissions.
