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What is a car exhaust pipe?
Release time:
2022-11-21
Automobile exhaust pipe (also called automobile exhaust pipe hose) is installed on the exhaust pipe between the engine exhaust pipe and the muffler, so the entire exhaust system can be flexibly connected to reduce noise, install and exhaust The role of the noise reduction system extends its life.
Automobile exhaust pipe(Also called automobile exhaust pipe hose) is installed on the exhaust pipe between the engine exhaust pipe and the muffler, so the entire exhaust system can be flexibly connected to reduce noise, install and extend the life of the exhaust noise reduction system The role. It is mainly used for light vehicles, small vehicles and buses. Its structure is a double-layer corrugated pipe outer steel wire mesh cover and a straight-line jacket collar at both ends. In order to improve the noise reduction effect, the corrugated pipe can be equipped with a stretch or mesh cover. Material: The main material is stainless steel SUS304. The box and nozzle material can be stainless steel or aluminized steel.
The automobile exhaust pipe has the function of reducing vibration and noise and prolonging the life of the exhaust noise reduction system. The main material of automobile exhaust pipe is stainless steel. For ordinary cars, the exhaust gas from the car leaves the engine under a lot of pressure, so the noise generated will drive people crazy. At this time, the main noise is the exhaust pipe of the car, in which a noise-canceling machine is installed, which greatly reduces the noise of the car. The main working principle is to divide the airflow through multiple channels. It can be seen that the transitions rub against each other and the flow velocity of the air stream gradually decreases. This repeated cycle will eventually exhaust the exhaust gas through the exhaust pipe, reducing noise! Everyday cars can achieve the effect of reducing noise.
Automobile exhaust pipeWhat should we pay attention to in troubleshooting? Let's all take a look.
Trouble phenomenon: A Dongfeng EQ1090D-type car has an artillery phenomenon in the muffler during driving. When parking for inspection, unplug the ignition coil high-voltage gun fire wire, test the fire at 34mm from the cylinder, pull the distributor power-off contact or shake the crankshaft, The flashover is normal, but the power-off contact of the distributor has threshing. After polishing the contacts with sand strips and adjusting the spacing to 0.35-0.45mm, the engine worked, but after the car traveled about 40 kilometers, the muffler was launched again.
Fault inspection and troubleshooting: According to the above phenomenon, the cause of the muffler launch is analyzed in detail. In order to find out the fault, the ignition sequence, the spring force of the distributor's power-off contact arm, ignition timing, spark plug, etc. are checked. Carburetor air filter, continue to check the valve gap also no result. After restarting the engine, it worked normally again, but it soon relapsed.
Stop the vehicle and check the distributor again. After decomposition and careful inspection, it was finally found that the copper strip from the single electrical contact arm to the low-voltage terminal was broken at the corner, and only a few thin copper wires were connected. Replace the broken copper rubber band and the symptoms will disappear.
Fault analysis: When the copper wire of the low-voltage wire of the distributor is broken, the cross section of the wire is reduced, which leads to an increase in the resistance of the primary circuit and a decrease in the circuit current, which leads to insufficient high voltage caused by the ignition coil. It is a bit difficult to start when the engine temperature is low, but the engine works normally after starting. As the temperature of the engine increases, the temperature of the ignition coil will increase, and the resistance will increase with the increase in temperature. Therefore, the high-voltage electricity generated by the ignition coil will be further insufficient, and the high-voltage spark will become weaker, or even single fire. Due to the single fire from time to time, the combustible mixer that did not ignite the cylinder was discharged from the muffler. When the muffler expands, the sparks in the exhaust gas explode, which is manifested as the release of the muffler.
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