BHARATHIDASAN ENGINEERING COLLEGE, NATTRAMPALLI 635854. DEPARTMENT OF MECHANICAL ENGINEERING ME 6602 AUTOMOBILE ENGINEERING FREQUENTLY ASKED QUESTIONS PART A - UNIT I - VEHICLE STRUCTURE AND ENGINES 1. List the classification of chasses name according to its control method. (Dec. 2016) 2. What are the main components of I.C. Engine? (Dec. 2016) 3. What are the types of cross sectional frames used in automobile? (May 2016) 4. What are the forces acting on the running vehicles? (May 2016) 5. What are the classifications of automobile based on transmission system? (May 2016) 6. What are the advantages of tubeless tyre over tubed tyre? (May 2016) 7. Give the typical specifications of an automobile. (Dec. 2015) 8. Why a gear box is required in an automobile? (Dec. 2015) 9. Name the resistance to vehicle motion. (May 2015) 10. Name the components of engine. (May 2015) 11. What is the need for a gearbox in an automobile? (Dec. 2014) 12. What is chassis? How its design is related to vehicle aerodynamics? (Dec. 2014) PART B - UNIT I - VEHICLE STRUCTURE AND ENGINES 1. Explain the construction of various chassis frames used in Automobile with neat figure. (Dec. 2016) 2. Explain with suitable sketches and valve timing diagram, the working of a Variable Valve Timing (VVT) system used in automobiles. (Dec. 2016) 3. (i) Write short notes on the following engine parts: (a) Piston (b) Cylinder Head (c) Piston ring (d) Gudgeon pin (e)flywheel (f) exhaust valve (g) Lubrication pump. (ii) Draw the layouts of automobile chassis and explain its significance. (June 2016) 4. (i) Write short notes on the following: (a) Valve Mechanism (b) Crankshaft (ii) What are the functions of Carburetor? (June 2016) 5. (i) What is the effect of weight of vehicle and passengers on the frame side members? Explain. (May 2016) (ii) Write note on different types of material used for chassis frame. (May 2016) 6. (i) Expalin the term Rolling resistance with the help of a neat sketch. (May 2016) (ii) Draw a neat labeled diagram of rear engine rear wheel drive type of vehicle layout. (May 2016) 7. (i) Discuss the different types of automobiles. (ii) Draw the layout of an automobile and indicate its various components. (Dec. 2015) 8. (i) Discuss the various resistances encountered by an automobile. (ii) List down any five components of an engine indicating their functions and materilas. (Dec. 2015) 9. (i) Discuss the frame type chassis construction with neat sketch. (May 2015)
(ii) Explain about any two types of stub axles. (May 2015) 10. (i) Write about king pin inclination. (May 2015) (ii) Discuss about toe-in and toe-out. (May 2015) 11. Explain the different components of the engine and their function. (Dec. 2014) 12. (i) Explain the resistance to vehicle motion. (Dec. 2014) (ii) Tabulate the typical metals used for engine parts. (Dec. 2014) PART A - UNIT II - ENGINE AUXILIARY SYSTEMS 1. Define Intermittent injection of petrol engine. (Dec. 2016) (June 2016) 2. Write the Emission norms of Euro BS IV for petrol vehicle (in g/km.) (Dec. 2016) 3. State the diesel vehicle emission norms of Euro BS IV in g/km. (May 2016) 4. What is the need of altering the ignition timing with respect to engine speed and load? (June 2016) 5. What are the factors that affect the life of a spark plug? (June 2016) 6. Mention the principle of operation of a distributor type pump. (Dec. 2015) 7. What do you understand by common rail direct injection system? Give its salient features. (Dec. 2015) 8. What is gasoline injection system? (May 2015) 9. What are the functions of a turbo charger? (May 2015) 10. What do you understand by the term DTS-I? (Dec. 2014) 11. How does a turbo charger work? (Dec. 2014) PART B - UNIT II - ENGINE AUXILIARY SYSTEMS 1. (a) What are the main functions of ECU? (b) Describe the construction details of distributor type Diesel fuel injection pump with sketch. (Dec. 2016) 2. (i) What are the types of electronic ignition systems used in S.I. engine? (ii) Draw and explain the circuit diagram of electronic ignition system using a magnetic pick-up method. (Dec. 2016) 3. (i) What are the advantages of Transistorized Coil Ignition (TCI) system? (ii) Sketch and explain the Capacitive Discharge Ignition System. (June 2016) 4. Describe the working of distributor type fuel pump with a sketch. (June 2016) 5. (i) Explain electronic spark timing/control with a circuit diagram. (ii) Write short notes on the following: Ignition Coil and Alternator (May 2016)
6. Discuss various methods to reduce the level of pollutants in the exhaust gases. (May 2016) 7. (i) Explain the function of various components of an electronically controlled gasoline injection system. (ii) Draw the layout of an electronically controlled ignition system and mention the function of each component. (Dec. 2015) 8. (i) Discuss the principle of operation of a turbocharger with a neat sketch. (ii) Draw a sketch of a three way catalytic converter and explain its principle of operation. (Dec. 2015) 9. (i) Discuss about CDRI system. (May 2015) (ii) Explain about the working principle of three way catalytic converter. (May 2015) 10. (i) Explain electronic ignition system with neat diagram. (May 2015) (ii) Discuss the construction and working of rotary distributor type diesel injection system. (May 2015) 11. Explain the following with suitable sketches: (i) Rotary distributor type (ii) Common rail direct injection system. (Dec. 2014) 12. Explain in detail about the engine emission control by three way catalytic converter system. (Dec. 2014) PART A - UNIT III - TRANSMISSION SYSTEMS 1. What is the use of slip joint? (Dec. 2016) 2. List the types of Automobile clutches. (Dec. 2016) 3. What are the functions of gear box? (May 2016) 4. What are the functions of differential assembly? (May 2016) 5. State the function of main shaft and lay shaft of a gear box. (May 2016) 6. What do you meant by overdrive? (May 2016) 7. Give the function of a clutch? List down the different types of clutches. (Dec. 2015) 8. Mention the purpose of synchromesh mechanism. (Dec. 2015) 9. Name the types of clutches. (May 2015) 10. Why slip joint is important? (May 2015) 11. What is the function of a flywheel? (Dec. 2014) 12. What is 4WD and AWD? (Dec. 2014) PART B - UNIT III - TRANSMISSION SYSTEMS 1. (i) What are the functions of the transmission system? (Dec. 2016) (ii) Sketch and explain the working method of fluid flywheel. (Dec. 2016) 2. Describe the line diagram of Synchromesh unit and mention the component (spring with ball type system). (Dec. 2016) 3. (i) What are the types of rear axle casing? (ii) What are the types of rear axle drive? And explain with a neat sketch. (June 2016) 4. (i) What are the requirements of the clutch? (ii) Sketch and explain the working method of torque tube type propeller shaft. (June 2016) 5. (i) Explain the need of universal joints in propeller shafts. (May 2016)
(ii) How do you classify clutches? Describe with neat sketch function and working of multi-plate clutch. (May 2016) 6. (i) Explain with neat sketch gear shifting mechanism. (May 2016) (ii) Explain the working of automatic gear box. (May 2016) 7. (i) Explain the principle of operation of a multiplate clutch with a neat sketch. (ii) With a neat sketch discuss the construction and operation of a constant mesh gear box. (Dec. 2015) 8. (i) Draw a neat sketch of a differential and explain its operation. (ii) Distinguish between Hotchkiss drive and torque tube drive. (Dec. 2015) 9. (i) Discuss about working principle of single plate clutch. (May 2015) (ii) Explain about gear shifting mechanism with neat diagram. (May 2015) 10. (i) Explain the working principle of differential with diagram. (May 2015) (ii) Explain the working principle of torque converter with neat diagram. (May 2015) 11. (i) Explain the working of friction clutches. What are the assumptions made in pressure calculation? (Dec. 2014) (ii) Explain the differential of an automobile with a neat sketch. (Dec. 2014) 12. Explain in detail the automatic transmission system. (Dec. 2014) PART A - UNIT IV - STEERING, BRAKES AND SUSPENSION SYSTEMS 1. Name any four types of suspension spring. (Dec. 2016) 2. Describe the advantages of steering Geometry. (Dec. 2016) 3. What is the function of the tension spring in the clutch plate? (May 2016) 4. Name the classifications of brake system. (May 2016) 5. What is a self energizing brake? (May 2016) 6. Why Synchronizer is required in the automotive transmission system? (May 2016) 7. Mention the function of a steering gear. List down any two types of steering gear. (Dec. 2015) 8. What do you understand by traction control? (Dec. 2015) 9. Name the types of front axles. (May 2015) 10. What is meant by traction control? (May 2015) 11. Compare disc and drum brakes. (Dec. 2014) 12. List out the different types of steering gear system. (Dec. 2014) PART B - UNIT IV - STEERING, BRAKES AND SUSPENSION SYSTEMS 1. (i) What are the functions of steering system? (ii) Discuss in detail working method of steering linkage system with suitable sketches. (Dec. 2016) 2. (i) What are the requirements of a good braking system? (Dec. 2016) (ii) Explain the merits of independent suspension system. (Dec. 2016) 3. (i) List the types of suspension spring used in automobile. (ii) Describe the working method of Antilock Braking System. (ABS) (June 2016)
4. Draw the schematic diagram of pneumatic braking system and explain it. (June 2016) 5. (i) With a neat sketch, explain the construction and operation of a shock absorber. (ii) Explain in detail about steering geometry with neat sketches. (May 2016) 6. (i) Distintuish between independent suspension and conventional suspension system. (ii) Explain air brake system in detail. Also state its advantages over hydraulic brake system.(may 2016) 7. (i) Explain the principle of operation of a power steering system with a neat sketch. (ii) With a neat sketch explain the operation of a telescopic type shock absorber. (Dec. 2015) 8. (i) Discuss the different types of front axles. (ii) With a neat sketch explain the principle of operation of antilock braking system. (Dec. 2015) 9. With an aid of neat sketch, explain the working principle of antilock braking system. (May 2015) 10. With an aid of neat sketch, explain the working principle of pneumatic suspension system. (May 2015) 11. Explain the four parameters of wheel alignment with neat sketches. (Dec. 2014) 12. Explain the following: (i) Power steering (ii) ABS (iii) Hotchkiss suspension. (Dec. 2014) PART A - UNIT V - ALTERNATIVE ENERGY SOURCES 1. What is the working principle of Fuel cell? (Dec. 2016) 2. What do you understand by the term Hybrid vehicle? (Dec. 2016) 3. Write short notes on LPG. (May 2016) 4. Why alcohol is an alternate fuel for S.I. engine? (May 2016) 5. What is the need to switch over to alternate sources of energy? (May 2016) 6. Write the reaction takes place during discharging and charging of nickel metal hydride cell. (May 2016) 7. List down the major constituents of natural gas and LPG. (Dec. 2015) 8. Indicate the difference between an electric vehicle and a hybrid vehicle. (Dec. 2015) 9. What are fuel cells? (May 2015) 10. Write down the advantage and disadvantage of Bio-diesel. (May 2015) 11. What are the alternative energy sources for automobiles? (Dec. 2014) 12. Why fuel cells are not preferred for automobiles now? (Dec. 2014) PART B - UNIT V - ALTERNATIVE ENERGY SOURCES 1. What are the engine modification to be undertaken in the S.I. engine for Alcohols or Ethanol as alternate Fuel? (Dec. 2016) 2. (i) What are the advantages of Hybrid electric vehicle? (Dec. 2016)
(ii) Explain the construction and working of the PEM fuel cell with sketch. (Dec. 2016) 3. (i) What are the merits and demerits of LPG as a motor fuel? (ii) List the advantages of LNG. (June 2016) 4. (i) What are the merits and demerits of Hydrogen fuel? (ii) Explain the merits of Ethanol fuel. (June 2016) 5. (i) Explain in brief electrical car layout. (ii) Compare advantages and disadvantages of LPG, Hydrogen and biodiesel as a fuel used in I.C. Engine. (May 2016) 6. Explain the various properties of alternative fuels. (May 2016) 7. (i) Discuss the advantages and disadvantages of using LPG as an alternative fuel in engines. (ii) Explain the performance and emission characteristics of using biodiesel fuel in engines. (Dec. 2015) 8. (i) Explain the principle of operation of an electric vehicle with a neat sketch indicating its merits and demerits. (ii) Discuss the principle of operation of a fuel cell with a neat sketch. (Dec. 2015) 9. (i) Discuss about hybrid vehicles. (May 2015) (ii) Explain the electrically operated vehicles. (May 2015) 10. (i) Explain about working principle of LPG fuelled engines. (May 2015) (ii) Discuss the working of fuel cells. (May 2015) 11. (i) Compare performance, emission and cost aspects of alternate fuels with conventional fuels for automobiles. (Dec. 2014) (ii) Explain the engine modification required to use alternate fuels in automobiles. (Dec. 2014) 12. (i) Briefly explain electric and hybrid vehicles. (Dec. 2014) (ii) Explain solid polymer fuel cell with a neat sketch. (Dec. 2014)