Method and device for detecting blocking of three-way catalyst

Abstract

The invention discloses a method and a device for detecting blocking of a three-way catalyst. The device comprises a detecting host, wherein a display and an alarm indicator are arranged on the detecting host; a sensing signal interface is arranged on one side of the detecting host; a main control board is arranged in the detecting host; a main control chip, a sensing signal amplification module,a clock module, a comparison module, a storage module, and a data transmission module are mounted on the main control board; the input ends of the sensing signal amplification module are respectivelyconnected to a temperature sensor and an exhaust gas flow sensor; the output end of the sensing signal amplification module is connected to the main control chip; the main control chip is respectivelyconnected to the clock module, the comparison module, and the storage module; the main control chip is connected to a monitoring terminal through the data transmission module. The structural principle of the device for detecting the blocking of the three-way catalyst is simple, the temperature and the exhaust gas flow rate in the three-way catalyst can be detected, whether the three-way catalystis blocked or not can be quickly judged, and the detecting efficiency is high.

Description

technical field [0001] The invention relates to the technical field of three-way catalytic converter detection, in particular to a method and device for detecting clogging of a three-way catalytic converter. Background technique [0002] The three-way catalytic converter is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC and NOx emitted from automobile exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. . Among them, CO means carbon monoxide, one of the main harmful emissions of gas engines; NOx is the collective name of nitrogen monoxide and nitrogen dioxide, one of the main harmful emissions of gas engines, and is strictly controlled by emission regulations; HC means hydrocarbons, the gas engine One of the main harmful emissions. Oxygen sensor is a standard configuration on automobiles. It uses ceramic sensitive components to measure the oxygen po...

AI Technical Summary

Problems solved by technology

The existing detection methods have low intelligence, low detection accuracy and low efficiency, and need to be further improved

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