With the rising fuel price, users pay more and more attention to the fuel consumption of construction machinery. In the daily use of construction machinery, the operator should not only master the appropriate operation methods, but also regularly maintain the electronic control system, hydraulic system, diesel engine fuel system and air intake system, so as to ensure that the diesel engine works in the best state.
Although the maintenance of the machine is important, before the above maintenance, we must also understand the correct management and use of fuel, otherwise the maintenance of diesel engine fuel system will not play a great role.
Due to the heavy workload and environmental problems, most of China's construction machinery will be used under severe working conditions. Most of the engine failures of construction machinery products are due to poor management of oil, water and gas.
Generally, fuel pollution refers to the following situations:
(1) High moisture content.
(2) It contains much sand and dust.
(3) The content of heavy oil is high.
(4) The content of paraffin is high.
(5) High sulfur content.
This article will briefly introduce the impact of high paraffin content in diesel oil.
The viscosity of fuel oil (diesel) itself is large, and the viscosity will become larger with the decrease of temperature, that is, the fluidity of fuel oil (diesel) is poor at low temperature.
The fuel contains a certain amount of paraffin. At low temperature, the paraffin is easy to crystallize, which will lead to poor fluidity of the fuel. The lower the temperature, the more obvious the paraffin crystallization, and even form a crystallization network, which will eventually lead to the loss of fuel fluidity.
At low temperature, the fluidity of the fuel is poor, and the fuel cannot pass through the oil pipe and filter smoothly, blocking the oil pipe and filter element. It will reduce or even interrupt the fuel supply, make the engine unable to work normally, make it difficult to start, or even shut down and fail to start.
