: 00000AU415121902 Pages: 1

Reg No.: Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
Seventh Semester B.Tech Degree Examination (Regular and Supplementary), December 2020

Course Code: AU415
Course Name:AUTOMOTIVE POLLUTION & CONTROL
Max. Marks: 100 Duration: 3 Hours
PART A
Answer any three full questions, each carries 10 marks. Marks
1 Explain the adverse health effects of IC engine generated air pollutants (10)
emissions on human beings.
2 a) Whatare the major causes of engine emissions? (3)
b) Define particulate matters. Describe in detail how particulate emissions are (5)
caused.
c) Give an account of Green House effect. (2)
3 Identify the Six major causes for hydrocarbon emissions from SI engines and (10)
explain with sketches wherever needed.
4 Explain the effect of operating variables on emission formation in SI engines. (10)
PART B
Answer any three full questions, each carries 10 marks.
5 Explain the formation of pollutants from CI engines. (10)
6 What is meant by diesel odour? Explain the mechanism of formation of diesel (10)
odour.
7 Illustrate ECE Test Cycle with graph. (10)
8 a) Define CVS 3. (1)
b) Give an account on Bharat Stages of emission standards. (2)
c) Explain FTP Test Cycle with Graph. (7)
PART ^
Answer any four full questions, each carries 10 marks.
9 a) Where the catalytic converter is usually located? (1)
b) Mention the main characteristics that an active catalyst must possess. (2)
c) What is the function of an air injector PCV system? Explain with a sketch. (7)
10 Illustrate the function of an Evaporation loss control device with a neat sketch. (10)
11 What is SCR? Explain with help of a neat sketch. (10)
12 Elaborate how you will measure invisible emissions using suitable apparatus. (10)
13 Depict the function of an NDIR analyzer with the help of a neat sketch. (10)
14 Explain the function of a Smoke meter with the help of a neat sketch. (10)
FORK

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