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B.E. (Electronics) AUTOMOTIVE ELECTRONIC SYSTEMS(2008 Pattern)

(Elective IV) (Sem. II)

Time :3 Hours] [Max. Marks :100

Instructions to the candidates:

1) Answer three questions from section -1 and three questions from section - II.

2) Attempt not more than six questions of which atleast three questions must be from eachsection.

3) Answers to the two sections should be written in separate answer books.

4) Neat diagrams must be drawn wherever necessary.

5) Pigures to the right indicate full marks.

6) Use of, electronic pocket calculator is allowed.

7) Assume suitable data, if necessary.

SECTION - I

QI) a) Explain two stroke engine on the basis of following actions. [8]

i) Intake ii) Compression

iii) Power iv) Exhaust.

b) Explain the Ignition system of IC Engine. [6]

c) Explain the construction of battery used in Automotive system. [4]

OR

Q2) a) Explain four stroke engineon the basis of following actions: [8]

i) Intake ii) Compression

iii) Power iv) Exhaust

b) Explain Hybrid Electric Vehicle(HEV) and its modes of operation. [6]

c) Define following terms in context with batteries: [4]

i) CCA Capacity (Cold Cranking Amperes)

ii) Ah rating.

Q3) Explain various applications for following sensors in context with automotive systems. [16]

a) Temperature Sensor b) Velocity Sensor

b) Pressure Sensor d) Torque Sensor

Q4) Justify the use of sensors for following applications: [16]

a) Anti-collision system b) Fuelinjection system

b) Vehicle tyres d) Speedometer

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Explain the concept of steering control system in detail. [8]

Write short note on Control Scheme for Vehicle braking. [8]

OR

Explain different strategies of engine management system. [8]

Write short notes on: [8]

i) Cruise Control System

ii) Remote keyless entry

SECTIONII

With the help of interfacing diagram and its C program explain the temperature controller using

PIC. [8]

Explain the selection criteria for processors of Automotive system. [6] What is the use of watch dogtimer and interrupts in ECU. [4]

OR

With the help of interfacing diagram and its C program explain RPM indication using Timer / Counterof PIC. [8]

State and explain software and hardware defugging techniques. [6] State and explain an algorithm forPWM technique using PIC. [4]

Write short notes on following in context with Automotive system. [8]

i) Bluetooth ii) GPRS

Explain the recent trends in Automotive buses such as OBDII and MOST.

[8]

OR

Compare architectural features of ARM 9 and ARM cortex. [8]

Distinguish between CAN, LIN and Flex Ray buses. [8]

What do you mean by diagnostic systems? Explain on board diagnostics. [8] Explain various safetynorms and standards for Automotive System. [8]

OR

Explain in detail passenger comfort and security system. [8]

Explain off board diagnostic systems in detail. [8]