Heavy engine emission diagnosis and testing system

Abstract

The invention belongs to the technical field of automobile testing, and particularly relates to a heavy engine emission diagnosis and testing system. A tested engine system, an engine dynamometer system, a tail gas measuring system and a data processing calculator are included. The tested engine system is electrically in both-way connection with the engine dynamometer system. The engine dynamometer system is electrically in both-way connection with the data processing calculator. The tested engine system is electrically in output connection with the tail gas measuring system. The tail gas measuring system is electrically in both-way connection with the data processing calculator. The data processing calculator comprises an engine dynamometer control module, a random work condition generation module, a first CAN communication module and a second CAN communication module. According to the heavy engine emission diagnosis and testing system, the comprehensive and accurate testing result is obtained, the cheating behavior in the engine emission detecting process is thoroughly eliminated, and an automobile is promoted to achieve the integrated effect of the effective energy saving and emission reducing function in the actual running process.

Description

technical field [0001] The invention relates to the technical field of automobile testing, in particular to a heavy-duty engine emission diagnostic testing system. Background technique [0002] In order to realize the energy saving and emission reduction of automobiles and the purpose of protecting the environment, more stringent limits have been imposed on automobile pollutant emissions. However, the current evaluation method of engine emission diagnosis system still has deficiencies, and cannot accurately and comprehensively evaluate heavy-duty engines. Emissions are tested. [0003] At present, the detection and evaluation of engine emissions are generally carried out by the dual-idle speed detection method and the working condition method. These two methods are currently commonly used experimental methods for detecting emissions in my country, and are effective methods for detecting pollutants emitted by vehicles. However, a large number of studies have shown that this ...

AI Technical Summary

Problems solved by technology

When the engine emission test is carried out at the same time, it is impossible to simulate all the conditions of the vehicle emission, and the experimental results will have certain deviations and other characteristics.

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