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HomeEmission Control SystemsExhaust Emission Control

Exhaust Emission Control

This section focuses on the mechanical and chemical processes used to treat engine exhaust before it exits the tailpipe. We dive deep into the Exhaust Gas Recirculation (EGR) system to lower nitrogen oxides, the role of Oxygen (O2) Sensors in monitoring air-fuel ratios, and how to maintain the Catalytic Converter to prevent exhaust backpressure and engine performance loss.

Catalytic Converter - Failure Signs And Testing - Learn The Basics
Exhaust Emission Control

Catalytic Converter – Failure Signs And Testing – Learn The Basics

10/03/2025
So, a catalytic converter, is a device used to reduce the emissions, from an internal combustion engine. Consequently, the catalytic converter works, by breaking down unburned gases, left over by the combustion process. And, requires […]
Air Injection System (AIS) - Air Pump - Function, Types, Failure
Exhaust Emission Control

Air Injection System (AIS) – Air Pump – Function, Types, Failure

09/08/2025
The air injection system (AIS), is actually part of the car’s exhaust system. Since no internal combustion engine is 100% efficient, there will always be some unburned fuel in the exhaust. As a result, the […]
(O2) Oxygen Sensor
Exhaust Emission Control

(O2) Oxygen Sensor: Function – Failure Symptoms – With Testing

03/10/2025
The, (O2) Oxygen Sensor, measures the difference, between the amount of (O2) in the exhaust gas. And, the amount of (O2) in air. So, with that information and other sources, the (ECU) can decide, whether […]
Exhaust Gas Recirculation on engine
Exhaust Emission Control

Exhaust Gas Recirculation: Types, Failure, Cleaning, Replacement

08/21/2024
The exhaust gas recirculation (EGR) valve, does exactly what the name implies. It circulates, exhaust gas, for a second time. So, exhaust gas recirculation (EGR) valves, do not normally require maintenance. But, they can become […]
(EGR) Valve Location on Engine
Exhaust Emission Control

(EGR) Valve: Common Problems And Troubleshooting Procedures

08/20/2024
The (EGR) valve system, is designed to help minimize, harmful oxides of nitrogen in the air we breath. To help do this, the (EGR) valve allows, a calibrated amount of exhaust gas, to reenter the […]

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