IS RADICALLY NEW ABOUT THE 4QMET?
BENEIFTS OF 4QMET TECHNOLOGY
DRIVING VS HIGHWAY DRIVING ENGINE EFFICIENCY
A SMALLER ENGINE CAN POWER A CAR WITH THE 4QMET
HISTORY OF MECHANICAL CVTs
THE 4QMET 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.
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.
4QMET 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 4QMET, 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.
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 4QMET is used to control the