Question

Problem: A 4-speed FWD AT is shown in the sketch. The numbers of teeth for the sun, planet and ring of the two planetary gear trains and of the final drive gears are shown in the sketch. The tire radius is 11 inches. The front projected area is 21ft and the air drag coefficient is 0.30. The roll resistance coefficient is 0.02. The transmission efficiency is 0.86. The vehicle weight is 2500 lbs. The clutch engagement schedule is shown in the table. a) Determine the four forward gear ratios and the reverse ratio. b) The input torque is T. Find the reaction torque applied by the related clutch in the 1st, 2nd, 4th and reverse gear respectively. c) The car is being driven at a speed of 65 mph in the 4th gear. Determine the angular velocity of the rear sun. d) The car is being driven at a constant speed of 65 mph on a 5% slope in the 4th gear. Determine the reaction torque applied by the 2-4 clutch.

Could you please help with this. I will upvote the response.

Answer 1

PAGE ANSLOER GIVEN COASI DERTIONS - Gillen planetary gear parane neters Bi - GQ B2 28 B3 - to Bu - 38 forward. Tire radius - llam Front project area alft² Roll resistance efficients 0.02 - 2500lbs rehicle weight transmission 0.86 co efficant air drag C 0•30 drag resistance CS Scanned with Cam

To find geal rounds and the forward gear varitions AGE 2 reveuse 1 062 2 1:28 1:10 Revere ratio = 1:46.5 (5) yal radio ) Reach Tome at is given with equation Initial torque Gear lato. T. 62 x (1) C0-30) 2 186 T 186 1 28 (1) (0.30) 8.41 T2 = SOUT 2) Tu - 38 (T) (0:30) 11-01 Tu - 11.4 T 46.5 * 1) (0:30) Treverse 13.95 ) . Trevede 13.951 Car speed 65 mph gear PGT middle Angular arelocity (va)

aula PAGE 3 65 ( 0.2794 ((v) Prches - pod 794) w - 2 32.64 ( ) speed - 65 mph slope 5.) Now, reaction torque applied by reaction clutch Exd 2500 X 5 X6-294 = 34929 o', T - 34925 for met orts me * please upuote necessary CS Stained with CamScanner