AT6703 Automotive Pollution and Control | Impotent  Questions
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OBJECTIVES: • The main objective of this course is to impart knowledge in automotive pollution control. The
detailed concept of formation and control techniques of pollutants like UBHC, CO, NOx, particulate matter and smoke for both SI and CI engine will be taught to the students. The
instruments for measurement of pollutants and emission standards will also be introduced to
the students. At the end of the course the students will have command over automotive
pollution and control.

UNIT I INTRODUCTION 

Pollutants – sources – formation – effects of pollution on environment – human – transient operational effects on pollution – Regulated – Unregulated emissions – Emission Standards.

UNIT II EMISSIONS IN SI ENGINE 

Chemistry of SI engine combustion – HC and CO formation in SI engines – NO formation in SI
engines – Smoke emissions from SI engines – Effect of operating variables on emission formation.

UNIT III EMISSIONS IN CI ENGINE 

Basics of diesel combustion – Smoke emission and its types in diesel engines – NOx emission and its
types from diesel engines – Particulate emission in diesel engines. Odor, sulfur and Aldehyde
emissions from diesel engines – effect of operating variables on emission formation.

UNIT IV CONTROL TECHNIQUES FOR REDUCTION OF EMISSION 

Design modifications – Optimization of operating factors – Fuel modification – Evaporative emission
control – Exhaust gas recirculation – SCR – Fumigation – Secondary Air injection – PCV system – Particulate Trap – CCS – Exhaust treatment in SI engines –Thermal reactors – Catalytic converters – Catalysts – Use of unleaded petrol.

UNIT V TEST PROCEDURE, INSTRUMENTATION & EMISSION MEASUREMENT 

Test procedures CVS1, CVS3 – Test cycles – IDC – ECE Test cycle – FTP Test cycle – NDIR
analyzer – Flame ionization detectors – Chemiluminescent analyzer – Dilution tunnel – Gas
chromatograph – Smoke meters –SHED test.

TOTAL : 45 PERIODS

OUTCOMES : • Upon the completion of the course, the student will understand the fundamentals of formation
of automobile pollutions in SI and CI Engines, various control techniques, test procedures etc.

TEXT BOOKS:

1. Springer and Patterson, “Engine Emission”, Plenum Press, 1990.

2. Pundir. B.P., “ IC Engines Combustion and Emissions” Narosa Publishers, 2010

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