If the tipper is in front of the rear four or eight dump trucks during the driving process, there is a poor acceleration, a weak driving force, and a low ability to climb the slope. It means that the engine of the vehicle is already malfunctioning, causing a malfunction. What are the main reasons?
1. There are blockages in the oil roads of the dump trucks before the top four and the rear eight, and the oil supply is insufficient at low pressure. Because it is relatively easy to block the diesel oil in the low-pressure oil passage, if the injected diesel oil is not good with impurities, or when cleaning the tank, use a towel or cotton to wipe the strainer. It is relatively easy to cause the strainer to clog. If the dump truck is in a hurry to transport, the filter element of the strainer can be temporarily removed, and the new filter element in the diesel primary filter and the fine filter will be replaced after the task to be transported is completed. The filter element of the blocked primary filter should be soaked with clean diesel oil for a period of time before being purged with compressed air from inside out.
2. The supercharger of the tipper front four rear eight dump trucks fails. Improper operation during normal driving, such as starting the dump truck and stopping the engine when it is stopped, will result in a high-speed operation of the dumper's booster rotor under poor lubrication conditions, so the rotor's The gap between the axial and the neck will gradually increase. In some severe cases, the bearing of the supercharger will be burned. At this time, the gap between the neck and the axial direction of the lower rotor should be carefully checked. If the axial gap is too large, you should use the pad immediately to adjust. If the neck-to-neck gap is too large, then the supercharger impeller and the scroll should be replaced. After the impeller is replaced, a dynamic balance test is required. When inspecting the front and rear tippers of the dump truck, we must pay attention to check the pipeline, that is, the connection status of the compressor, the intercooler, and the intake pipe. If the connection of the pipeline has fallen off, then pressurization. There is no effect on the device, resulting in a situation where the engine of the dump truck is not powerful at the top four or eight points of the tip, and it is easy to cause the engine of the dump truck to be damaged in advance.
3. The air filters of the tipper front and back eight are blocked and the intake resistance increases. At this time, it is necessary to replace the air filter of the top four and eight front dump trucks. It is necessary to use relatively dry compressed air and purge the outer filter of the air filter from inside to outside. If it has already appeared, When the contamination of oil marks, etc., should be replaced immediately.
4, adjust the fuel injection angle is too large and too small to affect the top four after eight dump truck engine. Dump truck fuel injection advancement angle has changed, most of them are caused by the loosening of the fixing screws on the high pressure pump connecting plate. It is necessary to recheck and adjust the injection advance angle. After adjusting the fuel injection advance angle of the dump truck, it must be remembered that the bolts of the high pressure oil pump connecting plate should be secured to prevent loosening.
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