Benefits of a CVT Over a Regular Transmission

In order to vary the torque vs. speed ratio of a motor, a transmission is used. A transmission can be used to increase the output torque while proportionally decreasing the output speed, and it can be used to decrease the output torque while proportionally increasing the output speed for a given input speed and input torque of a motor.

For efficient operation of most vehicles, such a car for example, a transmission is necessary. For a car, a transmission is needed in order to accelerate the car efficiently. In order to accelerate a car, torque is needed, hence during standstill maximum torque and minimum speed is desired; and once the car has reached its target speed, than no torque in order to accelerate the car is required but more speed is required, here a larger torque than required to overcome wind resistance, friction, etc., would be wasteful.

Also during the acceleration of a car, in order to maximize torque, the speed provided should be as close as possible to the current speed of the car. Since more speed results in less torque, and less speed results in more torque for a given input speed and input torque of a motor. Here, by increasing the amount gear ratios, the difference between the speed provided and the current speed of the car can be decreased.

From the previous description, it becomes clear that for a transmission it is desirable to have as many torque vs. speed ratios (gear ratios) available as possible. A transmission that between to two fixed gear ratios has an infinite number of transmission ratios is called a CVT.

Current Manual/Automatic Transmissions have a set number gear ratios, hence if a CVT that can transmit torque almost as efficiently as Manual/Automatic Transmissions is available, a Manual/Automatic Transmissions could not compete performance-wise with a CVT. Winning a race with a car that has 3 gear ratios versus a car that has 100 gear ratios is nearly impossible, mainly because a car with 100 gear ratios can accelerate so much faster than a car that only has 3 gear ratios. Several CVTs available today, which all have weakness that can be overcome by our CVT.

In order to vary the torque vs. speed ratio of a motor, a transmission is used. A transmission can be used to increase the output torque while proportionally decreasing the output speed, and it can be used to decrease the output torque while proportionally increasing the output speed for a given input speed and input torque of a motor.

For efficient operation of most vehicles, such a car for example, a transmission is necessary. For a car, a transmission is needed in order to accelerate the car efficiently. In order to accelerate a car, torque is needed, hence during standstill maximum torque and minimum speed is desired; and once the car has reached its target speed, than no torque in order to accelerate the car is required but more speed is required, here a larger torque than required to overcome wind resistance, friction, etc., would be wasteful.

Also during the acceleration of a car, in order to maximize torque, the speed provided should be as close as possible to the current speed of the car. Since more speed results in less torque, and less speed results in more torque for a given input speed and input torque of a motor. Here, by increasing the amount gear ratios, the difference between the speed provided and the current speed of the car can be decreased.

From the previous description, it becomes clear that for a transmission it is desirable to have as many torque vs. speed ratios (gear ratios) available as possible. A transmission that between to two fixed gear ratios has an infinite number of transmission ratios is called a CVT.

Current Manual/Automatic Transmissions have a set number gear ratios, hence if a CVT that can transmit torque almost as efficiently as Manual/Automatic Transmissions is available, a Manual/Automatic Transmissions could not compete performance-wise with a CVT. Winning a race with a car that has 3 gear ratios versus a car that has 100 gear ratios is nearly impossible, mainly because a car with 100 gear ratios can accelerate so much faster than a car that only has 3 gear ratios. Several CVTs available today, which all have weakness that can be overcome by our CVT.