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.
Material Selection:
1. Frame: 2MM thicknesses cold-roll Stainless steel.
2. Motor: Germany SEW brake motor (outer), power 0.75KW, power supply 220V.
3. Control system: Imported Japan Mitsubishi converter and PLC to control of electric box (150%1HZ)
4. Opening & closing speed: 0.6-1.5m/s (adjustable).
5. Safety Device: Korea Photocell Sensor, emergency stopping reaction when sensing obstacles.
6. Curtain: France high-density polyester fiber and the surface coating processing, thickness 0.8MM, variety colors can be chose: Red, yellow, blue, green, orange, gray, white, transparent, etc. Tensile strength: 4000/3500N/5cm, tear strength 600/600N. Fire-proofing level: German standard DIN75200 Usage temperature: -30 ° C +70 ° C.
7. Wind resistant: The Aluminium alloy Reinforce Girder to increase wind resistant effect.
8. Curtain replacement function: Aluminium alloy Reinforce Girder is loaded between 2 pieces Curtain, can be replaced easily if any curtain broken, save your cost.
9. Transparent window: 1.2MM thickness transparent PVC window, size and location is up to your request, more safer.
10. Seal: Seal brush are Installed inside the guides, and the special bottom design, to fit any uneven ground.
11. Cotrolling way: Push button + radar sensor, very convenient.
12. Limiting Switch: Mechanical limiting switch, easily and exactly.
13. Emergency STOP: With emergency stop button on control panel, can stop easily by
Hand once disconnect or accident
14 Fault recovery function: All Hongfa's production is with fault recovery function, system will self-recovery after power cut off.
15. Delivery time: About 7 business days with contract and deposit confirmed.
16. Pyament item: 50% before production, and the other 50% before shipment.
17. Warranty Details: We provide 12 months warranty for all doors and accessories (except man-made disasters, Irresistible natural disasters, ect^).
We have many professional engineers with rich experience, qualified products, perfect service system, and good cooperation relationship with many famous companies.
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SHENZHEN HONGFA AUTOMATIC DOOR CO., LTD , http://www.hongfarrd.com