Multi-channel detection device for automobile exhaust purifiers

Abstract

The invention discloses a multi-channel detection device for automobile exhaust purifiers. The multi-channel detection device comprises a gas delivery pipe used for being connected with an automobile exhaust outlet. A plurality of detection branches each formed by connecting a stop valve, one exhaust purifier, an air filter, a dryer and a flow controller in series through pipes are connected to the gas delivery pipe in parallel, the output ends of the flow controllers in the detection branches are connected to an exhaust analyzer, and a gas discharging pipe is connected to the output end of the exhaust analyzer. The pipes connected with the output ends of the stop valves in the detection circuits penetrate through a temperature control box to be connected with the corresponding exhaust purifiers, and the pipes connected with the output ends of the exhaust purifiers in the detection branches penetrate through a condenser to be connected with the corresponding air filters. By means of the multi-channel detection device, the catalyzing performance of the multiple exhaust purifiers small in size under the same condition can be compared in real time, testing and performance evaluation can also be carried out on a full-flow catalytic reactor large in size, and the true and accurate detection results can be obtained.

Description

technical field [0001] The invention relates to a detection device for a multi-channel automobile exhaust purifier, which is mainly used for performance testing of a purifier installed at an exhaust port of an automobile exhaust, and obtains an evaluation of the transformation effect of the purifier through analysis and comparison, so as to 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, and the annual sales volume of our automobiles has reached nearly 20 million units. At the same time, the tail 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 polluting gases...

AI Technical Summary

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 complicated, and has high requirements for 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 far limitations; in addition, most catalyst test devices only use With a 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 is generally only suitable for laboratory research use

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