ME 74 AUTOMOTIVE POLLUTION AND CONTROL Automobile Engineering-vii sem Question Bank( )
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1 ME 74 AUTOMOTIVE POLLUTION AND CONTROL Automobile Engineering-vii sem Question Bank( ) UNIT I INTRODUCTION 1. How the transient operation of S.I engine will cause CO formation? (may /June 2007) 2. What are the various sources of pollutant formation in compression ignition engines? 3. What is meant by global warming? How the automobiles are related to it? 4. What is the effect of carbon monoxide on human health? (may/june 2009) 5. What is meant by global warming? How it is occurring? 6. What is acid rain? 7. How does the transient operation of engines cause emission formation? 8. Tabulate various engine exhaust and the hazard caused by them to humans.(dec 2012) 9. List the sources of atmospheric pollution from a petrol engine powered vehicle with amount of pollutants. (Dec 2012) 10.What is the effect of A/F ratio on composition of exhaust of petrol engine?(june 11.What is smog? (june 1. How the transient operation of the Turbo charged diesel engines will effect the emission formation? Explain it in detail? 2. What is meant by transient operation of vehicles? How it cause emissions from a vehicle? Explain it in detail. 3. Which is the statutory agency monitoring and assessing the vehicular population in the cities and how the vehicular emissions are monitored and regulated by them? Explain it in detail? 4. Explain the effects of various air pollution on the environment? 5. Write short notes on emissions due to transient operation of the engines 6. What is meant by regulated pollution and un regulated pollution? Discuss briefly?
2 7. Discuss the various types of vehicles in the metropolitan cities which cause the pollution? (apri l/may 8. List out the different types of pollution from an automobile.discuss the effects of unburned hydrocarbon and carbon monoxide pollutions on environment? 9. Discuss the sources and effects of global warming? (nov/dec 10.What is environmental impact assessment? explain the various steps in it? 11.What are the various types of emissions from an automobile? How it originates? What are the various sources? 12.Explain in detail the transient operation of petrol and diesel engines and also write down the effects of it on emissions? 13.Describe the effects of the following pollutants on environment. (Dec 2012) i) Unburned hydrocarbon ii) Carbon monoxide iii) Oxide of nitrogen iv) Sulphur dioxide 14.Describe about transfer operational effects on engine pollution, noise, vibration and harshness., (Dec 2012) 15. Explain in detail the effects of automotive pollution on global warming. (june 16. Discuss the effect of automotive pollution on human health. (june UNIT II POLLUTANT FORMATION IN ENGINES 1. Draw the effect of compression ratio on nitric oxide formation in S.I engines? 2. How the emissions are generated in a 2-stroke S.I engine? 3. How aldehyde and odor emissions are generated in a diesel engine? 4. Draw the effect of rate of injection on smoke formation in diesel engines?
3 5. What is the effect of compact combustion chamber design change on emission formation in S.I engines? may/june 2007) 6. What are the main causes for emission formation in I.C engines? 7. Draw the effect of engine load on CO formation in S.I engines? 8. Which is the major emission from 2-stroke S.I engines? What is the reason for it? 9. How are the S.I engines responsible for pollutant formation? 10.How the two stroke engines are responsible for pollutant formation? (may /une 2009) 11.What is the effect of fuel delivered per cycle on emissions from C.I engines? 12.What is the effect of compression ratio on emissions from S.I engines? 13.What are the evaporative emissions? 14.What does the blue smoke indicates? 15.What are the factors which affects the NOx formation in C.I engines? 16.What is the effect of A/F ratio on emissions from SI Engines? 17.What are the sources of evaporative emissions? 18.What does the white smoke indicates? 19.Write about the different mechanism of NOx formation. (Dec 2012) 20.Give the effect of load and spark timing on HC,CO and NOx emissions. (Dec 2012) 21.What are the reasons for the formation of nitrogen oxides in an I.C engine? (june 22.What are the sources of evaporative emissions in S.I ENGINES? (june 1. Draw and explain the effect of equivalence ratio, combustion time and spark timing on nitric oxide formation in gasoline engines? 2. Explain the low temperature and high temperature reactions on combustion and emission formation in S.I engines?
4 3. How Black, White and Blue smokes are formed in diesel engines? Explain them in detail? 4. Discuss in detail about the combined effect of cetane number, combustion time and engine speed on nitric oxide formation in C.I Engines? 5. Explain the formation of nitric oxide in S.I engine with respect to its equivalence ratio and combustion? 6. How the design and operating factors of 2- stroke engine causes various emissions during its operations? 7. Explain in detail about the black, blue and white smokes formation in diesel engines. 8. What is meant by evaporative emission? Discuss the sources of evaporative emission and explain the operation of evaporative emission control device with suitable sketch? 9. Briefly describe the factors affecting smoke formation in diesel engines, discuss the smoke control methods? 10.Write short notes on a) Design and operating variables on nitric oxide formation in SI engine. b) Two stroke engine pollution 11.Describe the phenomenon of flame quenching in spark ignition engines? 12.What are blue, white and black smokes in diesel engines? Describe the mechanism of black smoke formation? 13.Write down the HC and CO formation in S.I engine with necessary graphic illustrations? (May/june 2009) 14.Explain the effect of compression ratio, spark plug location, and combustion chamber lay out on emission formation in S.I engines? 15.Explain the effect of spray formation, combustion and emission formation in diesel engines? 16.Explain the directional effects of design and operating variables of 2-stroke engines on emission formation? 17.How particulate emissions are formed in a diesel engine? 18.i) Describe the formation of unburned hydrocarbon in SI engine. (Dec 2012) ii) write about the formation of smoke in diesel engine 19.i) discuss about the control of nitric oxide based on equivalence ratio and engine manifold pressure. (Dec 2012)
5 ii) brief about the evaporative emission control device with sketch. 20. Explain the formation of HC and CO in S.I engines. (june 21.Explain the effects of design and operating variables on exhaust emissions of S.I engine. (june Unit III CONTROL OF EMISSIONS FROM ENGINES 1. What is meant by evaporative emission control? Give an example for it? 2. What is meant by a fuel cell? How it is related to automotive pollution? 3. What are the fuel modifications can reduce the emission from S.I engines? 4. Write the catalytic oxidation and reduction reactions to convert the emissions in the exhaust? 5. How are fuel cells contributing for emission control in vehicles? 6. Define EGR ratio? 7. What are the draw backs of three way catalyst? 8. What is meant by photo chemical smog? (april/may 9. What is the limitation of EGR? (april/may 10.Why unleaded gasoline is used in vehicle fitted with catalytic converters? 11.In what way HC emission can be controlled in two stroke engine? (Dec 2012) 12.Give the role of fuel cells in emission control. (Dec 2012) 13.What are the main pollutants of diesel engine? (june 14.How does combustion chamber design affect pollution from diesel engine? (june 1. Explain the concept Engine as a chemical reactor. What are the various process inputs, processes and process outputs?
6 2. What is meant by fumigation? What for it is? Where it is used? How it is carried out? Discuss its effects? 3. Explain how the crankcase emissions are controlled in the newly developed vehicles? Also discuss about the above control system configurations? 4. Explain the principle, construction and efficiency of 3-way catalytic converter for an S.I engine? 5. What is meant by secondary injection? How it is carried out? How it is controlling the emissions in a diesel engine? Discuss in detail 6. Discuss the engine design modifications required for the control of unburned hydrocarbon emission? 7. Describe the three way catalytic converter with a neat sketch? What are its limitations? 8. Write short notes on secondary air injection (april/may 9. Describe the exhaust gas recirculation system to control the oxides of nitrogen in the exhaust gas? 10.Discuss the performance of thermal reactors with respect to reactor volume and engine air fuel ratio? 11.Explain the working principle of a typical fuel cell? 12.Explain the construction and working principle of thermal reactors with sketch. (Dec 2012) 13.i) Describe about the catalytic converter with sketch(12) ii) Write short notes on control of emission using secondary air injection method(4). 14. Explain the various types of smoke from diesel engines. (june 15.Discuss the formation of particulate emissions of I.C engines. (june Unit IV NOISE POLLUTION FROM AUTOMOBILES 1. What are the reasons for noise pollution from a diesel engine?
7 2. What are the main sources of noise from an automobile? (may/june 2009) 3. List out the noise reduction techniques from automobiles? (april/may 4. List the various sources for vehicle noise. (Dec 2012) 5. Write about the noise control materials. (Dec 2012) 6. State any two design variables that affect pollution from an I.C engine. (june 7. What is fuel modification? (june 1. What are the various sources of noise from an automobile? Discuss their contribution in detail? 2. Which instrument is used for the measurement of nitric oxide? What is the principle of it? Explain its construction and limitation? 3. Discuss the noise measurement techniques used for automobiles 4. Explain the different sources of noise from automobiles. Discuss the noise measurement techniques and control of automotive noise? 5. Explain the measurement of engine combustion noise control and vehicle body noise. (Dec 2012) 6. How are vehicle noise controlled? Describe any two noise control devices with sketches. (Dec 2012) 7. Explain the construction and working of thermal reactor and catalytic convertor package. (june 8. Explain exhaust gas recirculation to control NOx emissions. (june Unit V MEASUREMENT TECHNIQUES EMISSION STANDARDS AND TESTPROCEDURE 1. Define the Bharath stage II norms of emission standards? (may/june 2007) 2. What is the principle of gas chromatograph used for emission measurement? 3. Draw the Japanese driving cycle used in emission testing? (may/june 2007) 4. What is meant by FTP? When it is formed? What for it is? (may/june 2007) 5. Which instrument is used for the measurement of nitric oxide emission?
8 6. What is meant by a dilution tunnel? What for it is used? 7. Sketch the Indian driving cycle? (nov/dec 8. What is the working principle of Hatridge smoke meter? 9. What is the need of driving cycle? (april/may 10.What is Bharath stage III? 11.What is the principle behind light extinction method for measuring smoke? (Dec 2012) 12.Give emission norms for both petrol and diesel engines based on bharat stage III. (Dec 2012) 13.What is a driving cycle? (june 14.What is BSN? (june 1. Discuss the principle, construction and working of light extinction type smoke meter. Also indicate its scale and versatility? 2. Which instrument is dedicatedly used for nitric oxide measurement? Explain its working and limitations? 3. Explain the FTP tests. Also explain the Bharath stage II and Euro norms of emission standards? 4. Which instrument is used for the measurement of CO,CO 2? Give its principle of operation, construction and working? 5. Explain ECE and FTP test procedures along with respective driving cycles and sampling systems? 6. Explain the working principle of flame ionization detector to measure the concentration of UHBC in the engine exhaust gas. 7. Explain the driving cycle for emission test procedure and also explain the constant volume sampling -3 method 8. Explain the internationally accepted methods of measuring the following invisible emission; (Dec 2012) i) unburned hydrocarbon ii) Carbon monoxide 9. write about the procedure of ECE and FTP tests. (Dec 2012) 10.Explain the construction and working of flame ionization detector. (june
9 11.Explain the construction and working of non dispersive infra red analyzer. (june
4. With a neat sketch explain in detail about the different types of fuel injection system used in SI engines. (May 2016)
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