Diesel automobile SCR system ageing failure rapid diagnosis system and method

Abstract

The invention provides a diesel automobile SCR system ageing failure rapid diagnosis system and method. According to the diesel automobile SCR system ageing failure rapid diagnosis system and method,a data acquisition terminal is mounted at an OBD diagnosis interface of a diesel automobile and used for acquiring signals such as the actual operation automobile speed of the diesel automobile, diesel engine operating state parameters and NOX concentration; the acquired data are uploaded to a cloud monitoring platform through the GPRS technology in real time; a diagnosis calculation model is designed in the cloud monitoring platform and is used for monitoring and quickly diagnosing the situation of ageing failure of an SCR system of the diesel automobile in real time to achieve the function of remotely diagnosing whether the SCR system of the diesel automobile operates normally or not on line. The diesel automobile SCR system ageing failure rapid diagnosis system can effectively conduct real-time monitoring and ageing failure online diagnosis on the operating condition of the SCR system of the diesel automobile. The diesel automobile can be supervised and maintained more efficiently.The environmental protection ability of the whole society is improved. Meanwhile, upgrading of automobile-related products is promoted actively. The diesel automobile SCR system ageing failure rapid diagnosis system and method has the active promotion effect on overall upgrading of the level of the automobile industry.

Description

Technical field [0001] The invention belongs to the technical field of on-line diagnosis of the aging failure of the diesel vehicle SCR system, and in particular relates to a diesel vehicle SCR system aging failure rapid diagnosis system and method. Background technique [0002] At present, pollution emissions from mobile sources such as motor vehicles in my country's transportation sector have become a major problem in my country's environmental governance. As of the end of 2016, the number of motor vehicles in the country reached 295 million. Motor vehicle exhaust emissions have become the main source of air pollution in my country, which is caused by ozone pollution and PM. 2.5 The important reason for nitrogen oxide NO X It is a primary pollutant formed by ozone. According to the "China Motor Vehicle Environmental Management Annual Report" (2017) issued by the Ministry of Environmental Protection, my country's motor vehicle NO X Discharged 5.778 million tons. [0003] In order...

AI Technical Summary

Problems solved by technology

At present, the research is generally on the diagnosis technology and diagnosis method of diesel engine exhaust purification system components, but there is a lack of reliable and effective diagnosis technology and diagnosis method for the diagnosis of whether the purifier is working normally.

Images