WATER LEVEL INDICATOR IN THE DIESEL FUEL FILTER

Abstract

The article presents the conductometric level sensor and the electrical circuit of the control system for the water level in the fuel filter, as well as the technology of their manufacture and installation on the car. (Research purpose) The research purpose is increasing the reliability of the diesel fuel system by using built-in critical water level alarms in the diesel fuel filter on the example of KAMAZ-5320. (Materials and methods) As a sensitive element of the water level sensor was used an element from the Cummins 5297619 fuel filter-water separator common in Russia for cars of the Gazelle family. (Results and discussion) A sensitive element was installed in the drain plug hole of the fuel filter for rough cleaning and filled with an epoxy compound. The sensor plug was wrapped into the hole of the coarse fuel filter cup and was connected to the mating part of the cable laid to the board with the electrical circuit of the car dashboard. The housing of the signal LED placed on the board was installed from the inside into the opening of the panel, after which the board was attached with hot glue to the inner plane of the dashboard. As a result of experimental studies, the dependence of the current consumed by the system on the water level in the glass was determined. The article describes developed technologies for installing the sensor and the proposed system on the car. (Conclusions) The implementation of the developed system for monitoring the water level in the fuel filter of the coarse fuel of a KamAZ-5320 type car will allow draining the sludge not only during scheduled maintenance, but also if necessary, and thereby eliminate abnormal operating modes of fuel equipment and ensure the resource of its elements with increased water content of the fuel used.