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Emission Control System                   Purpose● The emission control systems are installed toreduce the amount of CO, H...
Function of each system 1. PCV – Reduce HC 2. EVAP – Reduce evaporative HC 3. EGR – Reduce NOx 4. TWC – Reduce CO, HC,...
Type of Exhaust Emission           Pollutants Carbon Monoxide (CO) ● Carbon monoxide is a colorless, odorless,  tasteles...
 Health Effects ● CO reduce the blood’s ability to carry  oxygen to body tissue including vital organs  such as the hear...
Symptoms Associated With a Given  Concentration of CO Over Time
Nitrogen Oxide (Nox) ● Generated when nitrogen in the air reacts with oxygen at  the high temperature and pressure in sid...
Health effects ● NOx reacts with ammonia, moisture, and  other compounds to form nitric acid vapor  and related particles...
Sulfur Oxide (Sox) ●A general term for oxide of sulphur, which are emitted from motor vehicle burning fuel containing sul...
Health effects ●Emissions harm human health depends primarily on ground-level ambient concentrations, the number of peopl...
hydrocarbon In chemistry, a hydrocarbon is any chemical compound that consists only of the elements carbon (C) and hydrog...
Health effectHigh levels of hydrocarbons in theatmosphere can reduce the amountof available oxygen. Carcinogenic(cancer ca...
CATALYTIC CONVERTER DESIGN
EGR VALVE
EGR VALVE
Basic operation of EGR valve When a strong intake manifold vacuum was pulled (the less the throttle was opened ie. You to...
EGR SYSTEM
INSIDE CATALYTIC CONVERTER
Meaning of oxidationOxidation is the loss of electronsfrom an atom, molecule or ion,whereas reduction is the gain ofelectr...
PCV VALVE
LOCATION OF EXHAUST GAS EMISSION       CONTROL COMPONENTS
Emission control system
Emission control system
Emission control system
Emission control system
Emission control system
Emission control system
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Emission control system

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Explanation about Emission Control System

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Emission control system

  1. 1. Emission Control System Purpose● The emission control systems are installed toreduce the amount of CO, HC and Nox exhausted from the engine.● To prevent the atmospheric release of blow bygas HC and evaporated fuel containing HC being released from the tank.
  2. 2. Function of each system 1. PCV – Reduce HC 2. EVAP – Reduce evaporative HC 3. EGR – Reduce NOx 4. TWC – Reduce CO, HC, NOx
  3. 3. Type of Exhaust Emission Pollutants Carbon Monoxide (CO) ● Carbon monoxide is a colorless, odorless, tasteless and toxic gas produced as a by- product of combustion. ● A product of incomplete combustion. ● The main source of CO in our air is vehicles emission.
  4. 4.  Health Effects ● CO reduce the blood’s ability to carry oxygen to body tissue including vital organs such as the heart and brain. ● It is most harmful to those who suffer from heart and respiratory disease.
  5. 5. Symptoms Associated With a Given Concentration of CO Over Time
  6. 6. Nitrogen Oxide (Nox) ● Generated when nitrogen in the air reacts with oxygen at the high temperature and pressure in side the engine. ● Nox gases are formed everywhere where there is combustion – like in an engine. ● In areas of high motor vehicle traffic, such as in large cities, the amount of nitrogen oxides emitted into the atmosphere as air pollution can be significant. ● Nox react to form smog and acid rain. ● Fuel NOx can contribute as much as 50% of total emissions when combusting oil and as much as 80% when combusting coal.
  7. 7. Health effects ● NOx reacts with ammonia, moisture, and other compounds to form nitric acid vapor and related particles. ● Small particles can penetrate deeply into sensitive lung tissue and damage it, causing premature death in extreme cases. ● Inhalation of such particles may cause or worsen respiratory diseases
  8. 8. Sulfur Oxide (Sox) ●A general term for oxide of sulphur, which are emitted from motor vehicle burning fuel containing sulphur.
  9. 9. Health effects ●Emissions harm human health depends primarily on ground-level ambient concentrations, the number of people exposed and duration of exposure.
  10. 10. hydrocarbon In chemistry, a hydrocarbon is any chemical compound that consists only of the elements carbon (C) and hydrogen (H).
  11. 11. Health effectHigh levels of hydrocarbons in theatmosphere can reduce the amountof available oxygen. Carcinogenic(cancer causing) forms ofhydrocarbons are consideredhazardous air pollutants, or airtoxins and can lead to thedevelopment of cancer.
  12. 12. CATALYTIC CONVERTER DESIGN
  13. 13. EGR VALVE
  14. 14. EGR VALVE
  15. 15. Basic operation of EGR valve When a strong intake manifold vacuum was pulled (the less the throttle was opened ie. You took you foot off the pedal) the EGR valve opens to let exhaust gases into the intake manifold. As more throttle is applied, vacuum drops and the EGR valve closes.
  16. 16. EGR SYSTEM
  17. 17. INSIDE CATALYTIC CONVERTER
  18. 18. Meaning of oxidationOxidation is the loss of electronsfrom an atom, molecule or ion,whereas reduction is the gain ofelectrons.
  19. 19. PCV VALVE
  20. 20. LOCATION OF EXHAUST GAS EMISSION CONTROL COMPONENTS

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