2019年10月3日 · The Exhaust Gas Recirculation or EGR system is one of several vehicle emission control systems. It helps reduce the amount of the nitrogen oxides (NOx) in the exhaust gases. Nitrogen oxides are normally formed in the process of combustion in the engine cylinders.

In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NO x) emissions reduction technique used in petrol/gasoline, diesel engines and some hydrogen engines. [1] EGR works by recirculating a portion of an engine's exhaust gas back to …

EGR:全称为排气再循环（Exhaust Gas Recirculation），内燃机在燃烧后将排出气体的一部分分离出、并导入进气侧使其再度燃烧的技术（手法或方法）。 主要目的为降低排出气体中的氮氧化物（NOx）与分担部分负荷时可提高燃料消耗率。

Integral to the vehicle’s engine management system, the aptly named exhaust gas recirculation valve, or EGR valve for short, recirculates finely metered quantities of exhaust gas to the engine intake system for increased engine efficiency, reduced fuel …

2020年9月19日 · What Is an EGR Valve and What Does It Do? EGR stands for exhaust gas recirculation, a vehicle emissions control concept used in both gasoline and diesel engines. The EGR...

2024年7月7日 · Integrated into the vehicle's engine management system, the aptly named exhaust gas recirculation valve, or EGR valve for short, recirculates precisely metered amounts of exhaust gas into the engine intake system for higher engine efficiency, lower fuel consumption and lower NOx emissions.

Exhaust Gas Recirculation (EGR) systems are widely used in diesel engines with the purpose of reducing the formation of nitrogen oxides (NO x), by lowering the combustion temperature and the amount of oxygen into the cylinders.

2024年6月6日 · The EGR flow rate in diesel engines is carefully controlled to achieve the desired balance between emission reduction and engine performance. Control strategies involve monitoring engine parameters such as load, speed, and temperature to determine the appropriate amount of exhaust gas recirculation.

Flow Sensors. A number of flow parameters are critical for EGR control. Intake air flow at the compressor inlet can be measured with a mass air flow sensor—these can use a hot wire, hot-film or thin-film type sensing element. Modern designs are able to detect flow direction to accurately account for flow reversals.

Exhaust Gas Recirculation (EGR) is a system that allows the exhaust gases to be recirculated back into the intake manifold. This process leads to a significant reduction in nitrogen oxides (NOx) emissions because it reduces the two elements underlying its production: oxygen in excess and combustion temperature.