prime mover in REVA, is the motor. It is similar to the engine in
a conventional car. Reva
has a 13 kW separately excited DC motor with a high torque of 70
Nm at zero speed. When in use, the motor converts the energy stored
in the Power Pack into mechanical motion. The high torque electric
motor ensures a quick acceleration. The power from the motor is
delivered to the wheels through the Trans-axle that propels the
vehicle. While braking, the motor acts like a generator and recharges
the Power Pack.
Power Pack consists of eight 6-Volt EV tubular type lead acid batteries
that attain 80% state of charge in under 2.5 hours. A complete charge
is achieved in less than six hours. The Power Pack is housed beneath
the front seats, which lowers the center of gravity, thus increasing
the safety of passengers. Charging REVA is a safe and easy process
- Just plug into a 220 Volt, 15 Ampere socket - at home or at work.
has an on-board Charger, which converts AC into DC power to charge
the power pack. The charger is computer controlled with an in-built
stabilizer and auto shut-off mechanism. The smart charger's output
is connected to the power pack and ensures that optimum current
and voltage is maintained at all times.
also has a computerized Motor Controller. This regulates
the flow of energy from the Power Pack to the Motor in direct relation
to pressure applied on the accelerator. It ensures perfect speed
control and optimum use of energy in both forward and reverse directions.
brain of REVA is the Energy
Management System that monitors and controls all vital functions.
The EMS is a computer based system that optimises charging and energy
output of batteries to maximise operating range and improve performance.
The system also predicts available range for a given state of battery
charge and is a standard feature on the Reva.
EMS also maintains an electronic log of the vehicle performance,
enables service personnel to run diagnostic checks on the car to
give service information about the car.
the REVA is easy. Just
unplug after completing the charging process, turn the key, disengage
the parking brake and turn the control knob to the forward or reverse
position. Accelerate and take off.