The higher the speed, the better. The country has determined the speed of agricultural vehicles to be less than 50 km/h, which is determined after comprehensive consideration of the technical level, quality level, conditions of use, road conditions, and safety performance of agricultural vehicles. Manufacturers have also designed them accordingly. Therefore, increasing the speed of agricultural vehicles without permission will inevitably increase the failure rate, especially the safety performance, and even car damage. The higher the diesel brand, the better. The diesel used in agricultural vehicles is light diesel oil. According to the different condensation point, light diesel oil is divided into five types: No. 10, No. 0, No. 10, No. 20 and No. 35. The selection of light diesel brands is based on the principle that the diesel fuel will not solidify at the minimum temperature. Generally, it can be selected such that: No. 0 light diesel oil is suitable for use in the country from April to September and winter in the south of the Yangtze River; No. 10 light diesel oil is suitable for winter use in the south of the Great Wall and winter in the south of the Yangtze River. In addition, different brands of light diesel oil can be blended. The more oil, the better. Excessive oil will make the engine work, the crank connecting rod violently stirs the oil, not only causes the diesel engine power internal loss to increase, the engine oil consumption is too big, but also will have the fuel oil breakdown, causes the cylinder to deposit the carbon, the discharge pollution increases. The lower the temperature, the better. Too low temperature will make the fuel fluidity and evaporation worse, the combustion process will slow down, the engine power will drop, the fuel consumption will increase, the diesel engine will work rough, the lubrication conditions will be worse, the frictional resistance will increase, the wear will be accelerated, and the cylinder liner will be easy to produce. Chemical and electrochemical corrosion. According to measurements, at a water temperature of 40°C, the liner wear rate is 5 to 7 times the water temperature of 90°C. Therefore, the engine should be maintained within the temperature range specified in the instructions. The higher the charging voltage, the better. Some drivers adjust the charging voltage too high, which, in spite of sufficient charging, can cause the electrolyte temperature of the battery to be too high, the water to evaporate too quickly, and the service life of the battery to be shortened. At the same time, the excessively high voltage can easily burn the agricultural vehicle. Caused a malfunction. The thicker the fuse, the better. The thickness of the vehicle fuse is designed to protect the electrical equipment from being burned when the voltage is too high and the current is too high. If the fuse is replaced by a thicker fuse, the fuse is "safe", but once the voltage , The current is too large, it can easily burn out electrical equipment, or even cause electrical fires. The tighter the bolt, the better. Fasteners used for coupling bolts and nuts of vehicles, such as cylinder heads, connecting rod bearing caps, crankshaft bearing caps, etc., if tightened too tightly, not only cause permanent deformation of the coupling member under the action of external force, but also generate permanent tension due to the bolts. As a result of deformation, the pre-tightening force decreases and even causes the connection to fail. The tighter the drive belt, the better. The belts used in automotive water pumps, generators, hydraulic pumps, etc. are too tight, not only shortening the belt life due to over-stretching, but also causing the pulley shaft to buckle and bearing and shaft wear to increase. (Huangjiang)
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