Rajiv Gandhi Proudyogiki Vishwavidyalaya 2011 B.E Automobile Engineering Vehicle Dynamics,(AU-802)N - Question Paper

AU -802(N)
B.E (Eight Semester) EXAMINATION,June, 2011
(Automobile Engg. Branch)
VEHICLE DYANAMICS
Time : three Hrs
Max : 100 Marks
Min: 35 marks

Note : Attempt any 5 ques..All ques. carry equal marks.Draw neat sketches where necessary.

1. Write short note on the subsequent : 10
a. Vehicle control loop
b. Newtonian and Lagrangian formulations
2. (a)What do you understand by rolling resistance of tyre ? 10 (b)Explain the mechanism of tyre raod friction. 10
3. A light truck weighing 20 kN performing a full stop from 120 km/hr. on a level surface with a brake application that develops a steady brake force 10 kN. Determine the deacceletaion, stopping distance, time to stop and energy dissipated. Neglect aerodynamics and rollinf resistance forces 20
4. Write a short note on 10 every
a. Steering system models
b. Understeer gradient
5. Write a short note on 10 every
a. Suspension isolation
b. Suspenion damping
6. explain the effect of tyre abd vehicle parameters on stability abd handling characteristics of 2 wheelers. 20
7. (a) What do you mean by braking efficiency ? discuss. 10
(b) Derive an expression for estimating the stopping distance for a vehicle after applying brakes. Aslo take into account the aerodynamics drag on the vehicle. 10
8. Derive an expression for stear angle (a) at the front wheels of a vehicle assuming steady state response to steering input. 20

Earning:   Approval pending.