This is What i Got:
Unlike traditional automatic transmissions, continuously variable transmissions don't have a gearbox with a set number of gears. The most common type of CVT operates on an ingenious pulley system that allows an infinite variability between highest and lowest gears with no discrete steps or shifts.
Advantages of CVT
Feature: Constant, stepless acceleration from a complete stop to cruising speed
Benefit: Eliminates "shift shock" -- makes for a smoother ride
Feature: Works to keep the car in its optimum power range regardless of how fast the car is traveling
Benefit: Improved fuel efficiency
Feature: Responds better to changing conditions, such as changes in throttle and speed
Benefit: Eliminates gear hunting as a car decelerates, especially going up a hill
Feature: Less power loss in a CVT than a typical automatic transmission
Benefit: Better Acceleration
Feature: Better control of a gasoline engine's speed range
Benefit: Better control over emissions
Feature: Can incorporate automated versions of mechanical clutches
Benefit: Replace inefficient fluid torque converters
Explain the Underlined!
More:
When you step on the gas pedal of a car with a continuously variable transmission, you notice the difference immediately. The engine revs up toward the rpms at which it produces the most power, and then it stays there. But the car doesn't react immediately. Then, a moment later, the transmission kicks in, accelerating the car slowly, steadily and without any shifts. In theory, a car with a CVT should reach 60 mph (100 km/hr) 25-percent faster than the same car with the same engine and a manual transmission [ref]. That's because the CVT converts every point on the engine's operating curve to a corresponding point on its own operating curve.
CVTs are equally efficient on hills. There is no "gear hunting," because the CVT cycles steplessly down to a gear ratio appropriate for the driving conditions. A conventional automatic transmission shifts back and forth trying to find the right gear, which is far less efficient.
