QUESTION 7
Calculate the max traction force on a level road and at the maximum torque point for a vehicle with the characteristics below (
Max torque: 250 Nm at 4000 rpm. gear ratio (3 rd gear):1,4 Final drive ratio: 3.9
Tire 190/60 HR 15 Total transmission efficiency: 0,88
and check the correct answers below
a. Wheels rotation speed is bigger than engine rotation speed
b. Torque on the wheels is bigger than engine torque
c. The torque on the wheels is btw 4000-4100 N
d. The torque on the wheels is 130-150 N
QUESTION 9
Calculate the acceleration of the vehicle given on problem 7 with an air resistance of 130 N and going up the slope of 20 degrees and with coefficient of Rolling resistance of 0.05.
m=1800 kg) (10Points)(PO2)
Sign the correct answers below
a. The acceleration is between 1,4-1,8 m/s2
b. This car goes up the slope
c. The acceleration is between 3,4-3,8 m/s2
d. This car goes down the slope