Due to the high failure rate during the use of the engineering hydraulic system in low temperature environments, in order to ensure the service life and performance of the hydraulic system, Dalan Hydraulics reminds you to pay attention to the following matters when using it in low temperature environment. In the process of hydraulic system, the failure rate is relatively high. Therefore, in order to ensure the service life and performance of the hydraulic system, Dalan Hydraulics reminds you to pay attention to the following matters when using it in low temperature environment:
1, low temperature start
1 Starting performance is mainly related to engine type, combustion chamber design and process level.
2 The minimum starting speed at which the engine can be started at a certain temperature is usually used to indicate the starting performance at that temperature, and the low temperature starting performance is indicated by the lowest temperature at which the engine can be started.
3 During use, the low temperature startability of the engine is mainly affected by the viscosity of the engine oil, the evaporability of gasoline or diesel, the low temperature fluidity of the diesel oil and the working capacity of the battery.
4 engine crankshaft resistance torque and starting speed are mainly affected by the viscosity of lubricating oil under low temperature conditions.
5 As the temperature decreases, the internal friction of the oil increases, and the engine resistance torque increases, increasing the power required to start the engine.
2. Effect of fuel on engine starting performance
1 As the temperature decreases, the viscosity and relative density of the gasoline increase;
2 Under low temperature conditions, the fluidity of diesel is reduced and the viscosity is increased, which causes poor atomization of diesel and deteriorates the combustion process.
3 After the temperature is further lowered, the fluidity of the fuel will be gradually lost due to the precipitation of the waxy precipitate of the fuel.
4 If the diesel contains moisture, the low temperature environment may cause ice in the supply system to work.
5 Diesel must be precipitated and filtered before use.
3. Maintenance and maintenance of the battery and starter
Be sure to pay attention when selecting the appropriate electrolyte density, because the electrolyte density has an important impact on the operation of the battery. Strengthening the insulation of the battery or using a large-capacity battery is also a measure to improve the starting performance of the engine.
4, low temperature wear
1 During the engine's life cycle, 50% of cylinder wear occurs during start-up, while low temperature start has a greater impact on engine wear.
2 There is also a low temperature starting process of the engine, the lubrication condition of the cylinder wall is poor, and the cylinder wall is seriously worn;
3 During cold start, most of the fuel enters the cylinder in a liquid state, scouring the oil film on the cylinder wall.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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