Performance detecting system for automobile tail gas purifier

Abstract

The invention introduces a performance detecting system for an automobile tail gas purifier. The system comprises a gas pipe connected with an automobile tail gas exhaust port, wherein the gas pipe is connected in parallel with a plurality of detection branches which are formed by connecting stop valves, tail gas purifiers, air filters, driers and flow controllers in series through pipelines; the output ends of the flow controllers in the detection branches are connected with an exhaust gas analyser; the output end of the exhaust gas analyzer is connected with an exhaust pipe; pipelines connected with the output ends of stop valves in the detection branches are connected with the corresponding tail gas purifiers through a temperature control tank respectively; and pipelines connected with the output ends of the tail gas purifiers in the detection branches are connected with the corresponding air filters after passing through a condenser. The system can compare the catalyst performance of a plurality of the tail gas purifiers with smaller volume under the same condition in real time, and can perform test and performance evaluation on full-flow catalytic reactors with large volume to acquire real and accurate detection results.

Description

technical field [0001] The invention relates to a performance detection system of an automobile exhaust purifier. The system is mainly used for performance testing of the purifier installed at the exhaust port of the automobile exhaust, and the evaluation of the conversion effect of the purifier is obtained through analysis and comparison, and the Improve people's work efficiency when testing and screening purifiers. Background technique [0002] With the development of social economy, the demand for automobiles has increased sharply. The annual sales volume of automobiles in my country has reached nearly 20 million units. At the same time, the exhaust gas emitted by automobiles has also become one of the main pollution sources of the atmosphere. In order to reduce the pollution caused by automobile exhaust, my country has successively formulated strict emission regulations. Among them, installing a catalytic converter in the vehicle exhaust system to reduce the emission of...

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Problems solved by technology

Although this traditional method can accurately evaluate the activity and durability of the catalyst, the artificially prepared simulated automobile exhaust needs to be equipped with a special gas source, and the requirements for the flow control of the gas are very strict. The control valve block is also relatively complex, and has high requirements on gas quality and purity; in addition, the artificially prepared simulated automobile exhaust is not the real exhaust gas of the engine after all, and the test results have certain limitations; in addition, most catalyst test devices only use One reaction gas source, this relatively single sampling and sampling system can only test the catalytic performance of one catalyst under a certain working condition at a time, so its efficiency in screening catalysts is very low, and it is generally only suitable for experiments laboratory research use

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