Selection of oil for diesel engine water pump
The selection of diesel engine water pump oil mainly involves two aspects: diesel and engine oil. The specific selection needs to consider the performance requirements of the diesel engine, the use environment, and the specifications and standards of fuel and engine oil.
1. Selection of diesel
Sulfur content: The sulfur content of diesel used in diesel engines should be less than 0.05%, because the sulfur content of diesel directly affects the emission performance of diesel engines.
Grade selection: The brand of diesel should be determined according to the ambient temperature. In the low temperature environment in winter, diesel with a low freezing point should be used to ensure that the diesel will not solidify at low temperatures and affect the start and operation of the diesel engine. For example, when the ambient temperature is -27°C, -35 diesel should be used. In the high temperature environment in summer, diesel with a slightly higher freezing point can be selected.
Fuel specifications: The fuel specifications used by diesel engines should comply with relevant national standards, such as GB/T19147, etc. Users can choose suitable diesel according to the recommendations in the standards.
Cleanliness: Diesel must be kept highly clean and not contaminated by dust, impurities, etc. Before injecting into the fuel tank, it should be left to stand for a while and the upper layer of diesel should be taken to remove possible impurities and moisture, which is extremely important to prevent early wear of the injection pump plunger.
2. Selection of engine oil
Engine oil grade: In order to ensure the normal operation and long life of the diesel engine water pump and improve the emission performance of the diesel engine, the engine oil used in the diesel engine and supercharger should be a special C-4 or above diesel engine special engine oil. This type of engine oil has good lubrication, antioxidant and clean dispersion properties, and can meet the use requirements of diesel engines under high temperature, high pressure and high load conditions.
Viscosity grade: The viscosity grade of the engine oil should be selected according to the temperature. In cold areas, low viscosity grade engine oil, such as SAE 5W/30, should be used to ensure that the engine oil has good fluidity at low temperatures and reduce wear during cold start. In general areas or high temperature environments, higher viscosity grade engine oil, such as SAE 15W/40, can be selected to provide better lubrication and sealing performance.
Brand and quality: When choosing engine oil, in addition to considering grade and viscosity, you should also pay attention to brand and quality. High-quality brand engine oil usually has better performance stability and service life, which can reduce the frequency and cost of oil changes.
