(b) In the planetary-geared EVT system, the ring gear has 72 teeth, the sun
gear has 36 teeth and the final speed reduction gear has the ratio of 4 .
When the vehicle runs at 60k(m)/(h) and the wheel radius is 30cm, the power
demand for instant acceleration is 100kW. The engine produces 80kW at
1500rpm while working at the optimal operating line. Calculate the
corresponding generator power, motor power and battery power.
Hints: The standard speed relationship of planetary gear is given by:
omega _(r)=(1+
ho )omega _(c)-
ho omega _(s)
(b) In the planetary-geared EVT system, the ring gear has 72 teeth, the sun
When the vehicle runs at 60 km/h and the wheel radius is 30 cm, the power demand for instant acceleration is 100 kW. The engine produces 80 kW at 1500 rpm while working at the optimal operating line. Calculate the corresponding generator power, motor power and battery power.
Hints: The standard speed relationship of planetary gear is given by: @.=(1+p)-pa