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WHAT IS RADICALLY NEW ABOUT THE CVET?

CITY DRIVING VS HIGHWAY DRIVING ENGINE EFFICIENCY
A SMALLER ENGINE CAN POWER A CAR WITH THE CVET
HISTORY OF MECHANICAL CVTs
THE CVET vs MECHANICAL CVTs

CITY DRIVING VS HIGHWAY DRIVING ENGINE EFFICIENCY
Every motor, whether internal combustion or electric, experiences varying levels of energy usage efficiency through is range of operation. As the graph below shows, motors' efficiencies are typically very low at low speeds, rising to a higher efficiency as the motor speed increases and reaching a peak efficiency that only occurs at a narrow range of relatively high speeds.

For an automobile, a vehicle's peak efficiency can generally only be obtained by careful and economical driving habits at highway speeds, but in city driving, the efficiency will be much lower. Most people know that cars get the best mileage at highway speeds with lower mileage in city driving. An electric car (hybrid or fuel cell) will be similar in this respect, with the average efficiency of energy usage in city driving far below the peak that would be experienced at highway driving speeds.

The following graph shows the typical efficiency of a gas or electric powertrain. The peak energy usage efficiency of a car occurs at constant high speed driving. However, in start / stop city driving, efficiency is much lower. This graph shows the efficiency of energy usage for a car in city driving, which is much lower than the peak efficiency obtainable at the higher highway driving speeds.

The CVET enables a gas or electric powered motor to always run at the speed at which it achieves its peak fuel efficiency. This makes it possible for the energy usage efficiency of a vehicle with a CVET, even in city driving, to always operate at the peak energy usage efficiency that can be achieved at the optimal 'peak' speed of the motor.

The graph below illustrates the energy usage efficiency, which is the peak achievable efficiency of the gas or electirc (hybrid or fuel cell) motor, of a vehicle over its complete range of operation when a CVET is used to control the vehicle's speed.

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