Emission Control - Pollution Control Devices That Manage Emissions
Emission Control – Pollution Control Devices That Manage Emissions

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Evaporative Emission Control System (EVAP) – Function – Failure

Automotive Emission Control Systems – Must Perform One Important Job

Emission Thermactor Plugs – Needed For Small Block Ford Cylinder Heads

Catalytic Converter – Knowing The Basics And Testing

Air Injection – Secondary Air Injection System – Types – Function – Failure

(EGR) Valve – Is The Problem Your (EGR) Valve Or Is It Something Else

(PCV) System – The Most Critical Part Is The Flow Control Valve

Oxygen Sensors (O2) – They Monitor The Levels Of Fuel Mixture

Check Engine Light (CEL) – What Can Cause It To Come On

Loose Gas Cap – Evaporative Emission Control System (EVAP) Self Test


Emission Control – Pollution Control Devices That Manage Emissions

So, The clean air limits the amount of each of these pollutants that could be emitted from an automobile. Consequently, The manufacturers answer was the addition of certain pollution control devices. Also, The creation of a self adjusting engine.

So, An oxygen sensor was installed in the exhaust system. Consequently, Measuring the fuel content of the exhaust stream. It then would send a signal to a microprocessor which would analyze the readings. As a result, To operate a fuel mixture or air mixture device to create the proper air/fuel ratio. As computer systems progressed, they were able to adjust ignition spark timing as well as operate the other emission controls.

The computer is also capable of monitoring and diagnosing itself. As a result, If a fault is seen, the computer will alert you by illuminating a malfunction indicator lamp. The computer will at the same time record the fault in it’s memory. So, that a technician can at a later date retrieve that fault in the form of a code. Finally, Which will help them determine the proper repair.

Catalytic Converter

Read more on our Catalytic Converter page

PCV Valve

Read more on our (PCV) Valve page

EGR Valve

Read more on our (EGR) Valve page

Evaporative Controls

Read more on our Evaporative Controls page

Air Injection

Read more on our Air Injection page

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