EGR (Exhaust Gas Recirculation) ratio refers to the amount of exhaust gas that is recirculated back into the engine. It is an important measure for reducing harmful emissions and improving fuel efficiency.
EGR ratio is calculated by dividing the amount of recirculated exhaust gas by the total amount of exhaust gas. This is typically expressed as a percentage.
The EGR ratio can be affected by various factors such as engine load, temperature, and speed. It can also be influenced by the design of the EGR system and the amount of soot build-up in the system.
The ideal EGR ratio for an engine varies depending on the type of engine and its operating conditions. Generally, it is recommended to keep the EGR ratio between 5-15% for gasoline engines and 20-30% for diesel engines.
An optimal EGR ratio can improve engine performance by reducing engine knock, lowering combustion temperatures, and decreasing nitrogen oxide emissions. However, an incorrect EGR ratio can negatively impact engine power, fuel efficiency, and emissions levels.
