Opening conditions of BYD f3egr valve

The opening condition of BYD f3egr valve is when the engine speed rises or the load is medium or high.

EGR valve is a mechatronics product installed on diesel engine, which is used to control the amount of exhaust gas recirculation fed back to the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and connected to a short metal pipe leading to the exhaust manifold. The EGR valve controls the amount of exhaust gas entering the intake manifold, so that a certain amount of exhaust gas flows into the intake manifold for recirculation. EGR valve is a very important and key component in exhaust gas recirculation device. EGR valve is divided into mechanical type and electronic control type, and the mechanical type is shown in the right figure. Extended data exhaust gas recirculation (EGR) system is used to reduce the emission of nitrogen oxides (NOX) in exhaust gas. Nitrogen and oxygen can only react chemically at high temperature and high pressure, and the temperature and pressure in the combustion chamber of the engine meet the above conditions, especially during forced acceleration. When the engine is running with load, the EGR valve is opened, so that a small amount of exhaust gas enters the intake manifold and enters the combustion chamber together with the combustible mixture. When idling, the EGR valve is closed and almost no exhaust gas is recirculated to the engine. Automobile exhaust is a non-combustible gas (excluding fuel and oxidant) and does not participate in the combustion of the combustion chamber. It reduces the combustion temperature and pressure by absorbing part of the heat generated by combustion, thus reducing the generation of nitrogen oxides. The amount of exhaust gas entering the combustion chamber increases with the increase of engine speed and load.