If the installation of the exhaust system is unreasonable, such as the exhaust pipe is too thin, too long or the muffler is inappropriate, it may increase the exhaust resistance, make the diesel engine exhaust sluggish, and cause the diesel engine to emit black smoke.
If it is necessary to replace the exhaust system parts (exhaust connecting pipe and muffler), it must be the same kind of 名媛直播 that are suitable and matched to the original exhaust system. The diameter of the exhaust connecting pipe must not be less than the diameter of the original pipe, the exhaust throughput of the muffler must not be lower than the allowable throughput of the original muffler, and the back pressure (exhaust resistance of the muffler) must not be higher than the original allowable value.
Under normal circumstances, if the exhaust system is not modified, the problem of excessive exhaust back pressure will not occur. If there is a problem with the exhaust system, in addition to black smoke, the diesel engine also has the following phenomena:
The power of the diesel engine is insufficient, the exhaust temperature of the diesel engine is high, and the fuel consumption may increase. The basic method to confirm whether there is a problem in the exhaust system is to remove the exhaust pipe, start the diesel engine at low speed, and observe the smoke at the exhaust port of each cylinder. If the smoke color is normal at this time, it means that the diesel engine has no problem. Then install the exhaust pipe, start the diesel engine, run at the same speed at low speed, and observe the smoke color at the outlet of the exhaust pipe. If the smoke is large, it indicates that there is a problem with the exhaust system.
Troubleshooting: after confirming that there is a problem with the exhaust system, the whole system needs to be modified:
Replace the muffler, and select the muffler with large exhaust throughput and small exhaust back pressure:
Replace the connecting pipe between the outlet of the diesel engine exhaust pipe and the muffler, select the straight exhaust pipe with large diameter and large arc transition to reduce the right angle transition.
