Testing method for plugging of vehicle three-filtering system based on pressure sensor

Abstract

The invention discloses a testing method for plugging of a vehicle three-filtering system based on a pressure sensor. The testing method comprises the following steps that a, a differential pressure sensor is connected with an air inlet pipe and an air outlet pipe of a three-filter correspondingly, and meanwhile, a signal line of the differential pressure sensor is connected to an electronic control unit (ECU) module; b, a pressure difference value of the air inlet pipe and the air outlet pipe of the three-filter is measured by the differential pressure sensor, and a pressure difference signalis transmitted into the ECU module; c, the pressure difference value is compared with a pressure difference preset value by the ECU module; d, when the pressure difference value is greater than the pressure difference preset value, the three-filter is not needed to be replaced; and e, when the pressure difference value is less than the pressure difference preset value, the three-filter is neededto be replaced. According to the testing method for plugging of the vehicle three-filter system based on the pressure sensor, the pressure difference value of front and rear pipelines in the three-filtering system can be tested by using the differential pressure sensor, the three-filter is reasonably replaced according to a prompt signal, an automobile engine and related accessories are protected,and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of three filters, in particular to a pressure sensor-based method for checking the clogging of a three-filter system for vehicles. Background technique [0002] The three filters for vehicles refer to: air filter, oil filter and gasoline filter. [0003] In order to achieve the best fuel rate in the combustion of gasoline for vehicles, fresh air needs to enter the engine and mix with high-pressure oil and gas (the pressurized oil turns into mist after passing through a small nozzle), and then the gasoline engine is ignited by the spark plug Detonate, push the piston, and generate power. Hard particles in the air will cause internal engine wear. The usual way to deal with it is to install an air filter on the air intake to keep out the dust and road dust that enters the engine in the air, but the air filter will gradually clog with the accumulation of captured particles. Cause gasoline to burn insufficient...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art, and discloses a method for checking the clogging of the three-filter system of a vehicle based on a pressure sensor, which can accurately test the front and rear of the three-filter system by using a differential pressure sensor Pipeline pressure difference, replace the three filters reasonably according to the prompt signal, protect the car engine and related accessories, and prolong the service life

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