EGR (Exhaust Gas Recirculation) is an emission control system that recirculates a portion of the engine's exhaust gas back into the engine intake to reduce the amount of nitrogen oxides emitted. It reduces the amount of harmful substances emitted from the engine.
The EGR system works by directing a small amount of exhaust gas back into the engine intake, where it is mixed with the incoming fuel-air mixture. This reduces the amount of oxygen available during the combustion process, which in turn reduces the amount of nitrogen oxides produced - which can drop by up to 70%. This reduces carbon dioxide emissions and fuel consumption in gasoline engines.
Some motorcycle manufacturers have chosen to incorporate EGR into their designs to meet stricter emissions regulations. It is important to check your specific model to see if it has an EGR system and whether it requires special maintenance.
EGR systems help reduce emissions of nitrogen oxides, which are harmful air pollutants that contribute to smog and acid rain. They also help lower the combustion temperature of the engine, which can help extend its life.
The most common problems with EGR systems include clogged EGR valves and ducts, faulty sensors and vacuum leaks. These problems can cause the engine to run poorly, stall or even shut down.
Removing the EGR system from a scooter can improve performance, improve performance and fuel economy, but it can also reduce engine life, increase harmful pollutants, and potentially void the warranty and make it illegal to operate on the road. It is important to consider the consequences and consult a professional mechanic before making any modifications.