POSSIBLE MEASURES TO EXTEND THE SERVICE LIFE OF DIESEL FUEL PUMP MAIN COMPONENTS

During the operation of a high-pressure fuel injection pump, friction surfaces main elements are subjected to various mechanical, thermophysical and hydroabrasive effects, which increases wear rate precision reduces cyclic supply through cylinders. The purpose research is increase resource in-line pumps by modernizing power system. factor affecting performance presence carbovalt in hydrocarbon fuel, that is, mechanical impurities form an abrasive circulate throughout entire circuit system, can pass filter element get into junction during cycle, where they pinched abraded work surfaces. In addition impurities, fuels may contain surfactants such as sulfur, phosphorus, etc. Under certain conditions, this also accelerates pairs, especially at temperatures above 50°C. With temperature, lubricity decreases, since sulfur compounds activated, destroy structured surface boundary pairs. To reduce effect, it proposed limit temperature diesel system installing radiator with fan. limitation intensity will be lower, viscosity consistently higher 2 times or more, leakage mating analytical expressions indicate size depends on Reynolds number. viscosity, number decreases several times, while consumption coefficient gaps pairs significantly reduced. measure makes possible preserve reducing increasing service life pump.