ProductsThe production site control and standardized assembly line are designed according to European standards. The products are divided into 8 series and 115 models.
What are the reasons for the speed reduction of diesel engine during operation?
1) The main reason for the decrease of diesel engine speed is the lack of power, which is subdivided into insufficient air inlet and insufficient oil inlet.
Insufficient air intake can be checked:
A. Check whether the intake air filter of diesel engine is blocked
B. With intercooler, check whether there is air leakage in intercooler pipe, resulting in insufficient air intake
C. If there is a problem with the turbocharger.
Check if the oil inlet is insufficient:
A. Whether the liquid level of diesel oil is full and whether the variety is appropriate (for example, diesel oil with lower brand should be used in winter in Northeast China to prevent cold diesel scaling from blocking the oil filter of oil pipe)
B. Whether the diesel oil filter is blocked
C. Whether there is air mixed in the oil pipeline (empty the air with the hand oil pump. Pay attention not to remove the high-pressure oil pipeline of the high-pressure common rail pump. If it is removed, high-pressure liquid may cause personal injury).
D. increase the total oil supply of the oil pump. (for Hengyang pump, disassemble the bottom cover plate on the right side of the pump and turn it clockwise for about 1 turn, so as to increase the total oil supply of the pump. This measure is generally not used. Use it with caution! It may cause excessive total fuel injection, incomplete combustion in the combustion chamber and red phenomenon in the exhaust manifold)
E. Check whether the flameout solenoid valve is pulled in place?
F. Flameout in the process of capacity adjustment is mainly due to the difference between closing the throttle cylinder and closing the intake valve cylinder (similar to sdp660h, the adjustable flow valve can be adjusted to distribute the strength of the two, so that it can close the intake valve first and then close the throttle)
2) There is a problem with the oil pump of the diesel engine. The service station can only be notified for maintenance.
3) Other issues
A. The breathing tube is stuck
B. Poor oil lubrication leads to increased friction power and insufficient total power