Analysis of the failure of black smoke in agricultural tractors
The phenomenon of black smoke often occurs during the use of some agricultural vehicle tractors, which not only affects the power performance of the machine, but also increases the consumption of fuel and also pollutes the environment. There are many reasons for this phenomenon. The analysis is as follows: 1. The working environment of agricultural vehicles is rather harsh, and the heavy dust can easily cause the air filter to become blocked and the intake air is insufficient. 2. There are a small number of pilots who are greedy for cheap and use diesel fuels with unsatisfactory quality requirements. 3, on the bridge climbing is not adjusted into low gear, speed too fast, overload, speeding, overloaded operation. 4. The bolts of the fuel injection pump coupling are loose, the keys and keyways are loose, and the driven plate is misaligned, causing the injection time to be premature. 5, low fuel injection pressure, small injection angle, uneven injection of fuel from each cylinder, poor atomization or burning of the nozzle, oil valve wear, the end surface of the injection pump plunger sleeve and the oil outlet valve seat contact surface is not Sealed, the quality of injection drops. 6, the valve, piston, piston ring, cylinder wall, cylinder pad, camshaft on the valve cam wear caused by the lack of compression pressure. The main reason for black smoke is that there is little air in the cylinder, there is a lot of fuel, and when the fuel burns incomplete or burns uncomfortably. According to the above analysis to find out the reasons, take appropriate measures to troubleshoot, agricultural tractors can run normally.
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