METHOD TECHNICAL DIAGNOSTICS COOLING SYSTEM DIESEL LOCOMOTIVE

摘要

The method of technical diagnostics diesel engine cooling system of the locomotive, comprising the steps of measuring a pressure of the cooling liquid after the circulation pump of a diesel engine cooling system, characterized in that measure the pressure drop of coolant? P on the cooling radiator sections diesel engine, the coolant temperature T, the rotational frequency f cranked shaft of a diesel engine, which is driven to rotate the circulation pump when the coolant temperature in the temperature range corresponding to their steady state of the diesel engine cooling system, is performed post arrays ΔPi differential pressure parameters speed fza predetermined period of time at various positions of the driver controller, according to the formula of least squares is calculated coefficient k functions and increasing function k factor in the operation of the coefficient k functions defined by the same formula at the reference condition of the radiator sections, and the circulation pump of the cooling system of a diesel engine, determine the degree of contamination Z radiator sections as the amount of deviation of k kV percent by formula: Z = 100 (kk) / (kk),% then set to the value k = 1.2 · k, corresponding to the maximum permissible operating contamination radiator sections, and a decrease ratio function k on the magnitude of the coefficient function Q kopredelyayut degree of performance reduction of the circulation pump of the cooling system of a diesel engine according to the formula: Q = 100 (kk) / (kk),% then set to the value k = 0.8 · k, corresponding to the maximum allowable reduction in operating performance a circulation pump.