Many truck owners have encountered the problem of black smoke coming from the exhaust pipes. If you suddenly start driving black smoke on the road, the police will think that you are illegally on the road and may face fines. It is not only that the yellow mark car will be black smoke, such as uneven fuel supply, premature injection, and insufficient atomization will all lead to black smoke. After the emission is upgraded, the vehicle has an EGR system, which means that the familiar and unfamiliar part of the driver will also cause the vehicle to emit black smoke, which will affect the normal operation of the engine over time. We have repeatedly mentioned the EGR system, which is an English abbreviated version of exhaust gas recirculation. After combustion, the internal combustion engine separates part of the exhaust gas and introduces it into the intake side. This reduces the explosion pressure and the combustion temperature when the fuel is burned, thereby reducing nitrogen oxides (NOx) in the exhaust gas. In this process, the EGR valve controls the exhaust gas circulation. If the EGR valve fails to close tightly, the exhaust gas will enter the engine while the vehicle is running or idling. After mixing in the exhaust gas, the air content on the intake side of the cylinder will be reduced, resulting in a decrease in oxygen, and the insufficient combustion of fuel will increase the content of carbon in the exhaust gas, and the exhaust gas will turn black. At this time, it was obviously the culprit of black smoke that helped the vehicle complete the exhaust gas cycle and reduce pollutants in the EGR system. At this point, if you want to determine whether there is a problem with EGR, you can try to block the manifold of the exhaust pipe so that the exhaust gas is directly discharged without recycling. If the vehicle is no longer emitting black smoke, it means that there is a problem with the EGR valve. However, it has not been a long-term solution to block manifolds. Early replacement of EGR valves will solve the underlying problem. If there are other causes of black smoke in the vehicle, we also hope to communicate with us in time and learn from each other, so as to keep more friends away from black smoke. Precision Balance Scale,High Precision Electric Balance Weigh,High Precision Weighing Scale,High Precision Electric Balance Scale Changzhou Weibo Weighing Equipment CO .,LTD , https://www.webowt-scale.com
The exhaust gas will be black smoke because of its pollution