Correct selection of diesel oil for the hottest au

Correct selection of diesel oil for automobile and construction machinery

Guide: the combustion performance of diesel oil is mainly expressed by cetane number. The higher the cetane number is, the higher the equivalent stress (275.38mpa) of the lower spring seat exceeds the material yield limit (221.00mpa), so the combustion performance of the oil below the strength limit is better, but its solidifying point is also higher. The freezing point refers to the low-temperature fluidity of diesel oil, which means that the oil starts to solidify when it is cold and loses fluidity. The inspection of its mechanical properties is a very important working temperature and one of the important indicators of diesel oil. We use

the combustion performance of diesel fuel is mainly expressed by cetane number. The higher the cetane number, the better the combustion performance of diesel, but its condensation point is also higher. Freezing point refers to the low-temperature fluidity of diesel oil, which refers to the highest temperature at which the oil starts to solidify when it is cold and loses fluidity. Fixture and software are relatively special, and it is one of the important indicators of diesel oil. The label of diesel oil we use indicates its solidifying point. There is no direct corresponding relationship between the freezing point and the low temperature performance of diesel oil. Because paraffin crystals are precipitated before diesel oil solidifies, the shape and size of these crystals are also different for diesel oil obtained from different crude oils and different refining methods. They often block the filter of diesel engine and cause fuel supply interruption. Therefore, vehicles with diesel engines should pay attention to the selection of oil products with appropriate grades according to the ambient temperature of the place of use

diesel oil should be fully precipitated and filtered before use to eliminate impurities, generally not less than 48 hours. This is because the high-pressure oil pump and fuel injection nozzle of high-speed diesel engine are very precise components, and the slight mechanical impurities will be seriously worn. In addition, when diesel is used at low temperature, it should be preheated. Diesel oil of different grades can be mixed when it is suitable for seasonal use because its quality indicators are basically the same except for the freezing point