Method for measuring the content of carbonaceous matters in an oil for diesel engines.

摘要

The invention relates to a device for measuring the concentration of carbon substances in an oil for a diesel engine, comprising a housing containing a sensitive capacitive element which is intended to be submerged in the oil and the capacitance of which varies as a function of the dielectric constant of the oil, characterised in that this sensitive element (3) consists of two parallel electrodes, of which one connected to earth and called a shielding electrode (4) is formed by two interconnected parallel metal plates and the other, called the active electrode (5), placed between these two plates and electrically insulated over virtually its entire surface is connected to an electronic processing circuit (7) intended for measuring the concentration of carbon substances in the oil on the basis of the capacitance between said electrodes. The invention is used on motor vehicles. <IMAGE>