SENSOR FOR MEASURING DEGRADATION STATE OF ENGINE OIL FOR VEHICLE

摘要

PURPOSE: A sensor for measuring degradation state of engine oil for a vehicle is provided to reduce unnecessary energy consumption and economical loss by determining and indicating a real exchange period of engine oil by a sensor mounted on an oil fan. CONSTITUTION: A sensor for measuring degradation state of engine oil for a vehicle includes a housing(20) in the shape of cylinder to be inserted by a predetermined distance into an oil fan(10) via a through hole(12) of a predetermined size on a side of a wall of the oil fan and formed with a plurality of holes(26) at an end part for flowing oil in the oil fan, a sensor electrode plate(30) inserted in the housing and formed with an upper electrode pair and a lower electrode pair at upper and lower end parts, forming a predetermining space communicated to the holes, for measuring capacitance with relation to the oil, a cylinder(40) supporting the sensor electrode plate and incorporated with a plurality of contact pins(42) in a side wall for applying power and measuring the capacitance by contacting electrodes of the sensor electrode plate, a shield plate(50) supporting the cylinder and connected to the contact pins to be connected to an electronic circuit, forming a sealed space receiving reference oil in the cylinder, an electronic circuit board(60) positioned below the shield plate apart from the plate by a predetermined space and formed with the electronic circuit for comparing and determining values measured by the sensor electrode plate by being connected to a connection terminal, and a supporting die(80) for supplying the electronic circuit board and incorporated with an output terminal for outputting data of the electronic circuit to the outside.