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Automobile Emission monitoring
using Auto exhaust analyzer.
Nishant Sharma (2009PCE104)M.Tech. Environmental Engg.MNIT Jaipur
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Automobiles produce emission:
COCO2NOx
SO2
HCsO3PM
LeadCFCs
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Emissions Generation
Automobile
Generation of
HC, NOx , CO,SO2
GasolineCombustion
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Effects on the Environment and
Human Health
Smog Generation, Green
House Effect and Ozonedepletion
Cancer, lung disease etc.
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Common air pollution sources
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Standard Reference Date Region
India 2000 Euro 1 2000 Nationwide
Bharat Stage II Euro 2
2001NCR*, Mumbai, Kolkata,
Chennai
2003.04 NCR*, 10 Cities
2005.04 Nationwide
Bharat Stage III Euro 32005.04 NCR*, 10 Cities
2010.04 Nationwide
Bharat Stage IV Euro 4 2010.04 NCR*, 10 Cities
* National Capital Region (Delhi) Mumbai, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmedabad, Pune, Surat,Kanpur, Lucknow, Sholapur, and Agra
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Effects of CO
Forms carboxyhemoglobin with hemoglobin(combining capacity 50 times more than oxygen).
Reduces oxygen delivery to bodys tissues andorgans.
At low levels, it affects people with cardiovasculardiseases.
At high levels, it is poisonous to everyone.
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Effects of Hydro Carbons Pulmonary
Discomfort.
Effects the mucousmembrane.
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Auto Exhaust Analyzer It is an instrument which is used to measure the
amount of Carbon Mono Oxide and Hydro Carbons.
Carbon Mono Oxide is measured in terms ofpercentage volume with reference to a span gas whichis filled initially and the instrument is calibratedaccordingly.
Hydro Carbons are measured in PPM.
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Primary Components:
Main Unit
Probe and tube
fittingsFilters Power Cord
Sampling ProbeSampling Tube
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Working principle It based on the principle ofNon-Dispersive Infrared
ray structure(Double beam type).
It makes internal pressure in the left detector higherthan one in the right detector.
By blocking the ray, the pressure in both detectors isequalized.
The changing volume of absorbing infrared ray isdetected.
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Circuit3
1
2
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Principle Components:
1. Infraredsingle light
source
2. Mass-flowsensor
3. InterferenceCompensating
DetectorEliminates
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Specifications: Measuring components: HC, CO. Measurement range:
HC: 0 to 10000ppm
CO: 0 to 10% Measuring method: Infrared raySystem
Certification number: JATA-CO,HC-5
Communication interface: RS232C Indication: LCD with back light Power supply: 90 to 264V AC Mass (Weight): Approx. 5kg
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Calibration
Check function
Spancalibration
ZeroCalibration
Warm Up
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Recommendations
Follow thenorms
Properlymaintain
yourvehicle
Go forroutineemissionstest.
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