Reasons and solutions for uneven oil supply of RY high-temperature heat-conducting oil pump 1. Uneven oil supply during commissioning: RY high-temperature heat-conducting oil pump requires no unevenness of oil supply at rated speed when commissioning on test bench %. Reasons and solutions for uneven oil supply of RY high temperature heat transfer oil pump 1. Uneven oil supply during commissioning RY high temperature heat transfer oil pump requires 3% of oil supply unevenness at rated speed when commissioning on test bench .
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2. Uneven oil supply caused by machine failure is used for a long time. Because RY high temperature heat transfer oil pump drive coupling loose joint or excessive clearance, Botaibang drive gear wear and side gap increase, it will also affect the oil supply of each cylinder. Evenness. In addition, the high-pressure oil pipe joints are leaking due to frequent vibration or insufficient tightening, and the tightening force is too large, causing the joint metal to fall off and block the oil pipe, which also causes uneven oil supply of each cylinder.
3. Different debugging conditions and operating conditions RY high-temperature heat-conducting oil pump is debugged at room temperature on the test bench, while the installed machine is used at the end of cylinder compression, cylinder temperature of 500-700 ° C, pressure of 3 ~ 5 MPa. Use, the difference between the two is greater. When the locomotive is working, the temperature of the RY high-temperature heat-conducting oil pump and the injector are both about 90 °C, which will also cause the viscosity of the diesel oil to drop. Therefore, the internal leakage of the plunger and the needle valve coupler increases, and the oil return amount is also greater than that during the commissioning. According to the measurement, the amount of oil actually injected into the cylinder by the RY high-temperature heat transfer oil pump is only about 80% of the commissioning amount of the test bench. Although the RY high-temperature heat transfer oil pump commissioning personnel will consider this factor, it is impossible to accurately grasp it. In addition, Botou Taibang Pump & Valve Manufacturing Co., Ltd., due to the difference in the degree of wear or sealing of the cylinder liner piston and the valve train, the temperature and pressure after compression of each cylinder will also be different. Even if the RY high-temperature heat-conducting oil pump is debugged on the test bench, the oil supply of each cylinder will be uneven after installation.
In addition, in the RY high-temperature heat transfer oil pump and governor spring, the piston spring is the strong force, large deformation and high working frequency. Therefore, the breaking frequency is also high. The fuel injection amount of the lighter is reduced, the fuel injection amount of each cylinder is uneven, the injection time interval of each cylinder is out of tolerance, and the fuel injection start time is delayed; if the oil supply is severe, the fuel supply may not even supply oil.
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