Spraying characteristic analysis device and method

A technology of characteristic analysis and pressure regulating device, which is applied to the electronic control of exhaust gas treatment device, diagnosis device of exhaust gas treatment device, exhaust gas treatment, etc. Low efficiency and other problems, to achieve the effect of saving test resources and costs, improving accuracy, and simplifying the process
CN105604665AInactive Publication Date: 2016-05-25WEICHAI POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WEICHAI POWER CO LTD
Publication Date
2016-05-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a spraying characteristic analysis device and an analysis method based on the device. Key parameters for quantitatively evaluating the spraying condition of an SCR injection system can be accurately tested, and efficiency is high. The device comprises the SCR injection system, a laser emitter, a laser receiver, a camera and processors, wherein the processors include a signal processor and an image processor; laser emitted by the laser emitter is received by the laser receiver after being subjected to spraying of urea injected by a nozzle penetrating the SCR injection system; the signal processor is connected with the laser receiver and used for acquiring laser signals received by the laser receiver and processing the laser signals, and the urea spraying particle diameter and the distribution condition of the urea spraying particle diameter are acquired; the camera is connected with the image processor and used for acquiring urea spraying images at different time moments and transmitting the images to the image processor; the image processor is used for processing the images and acquiring the urea spraying penetration length and taper angle.
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Description

technical field

[0001] The invention relates to the technical field of post-treatment of exhaust gas discharged from an engine, in particular to a spray characteristic analysis device and an analysis method based on the device. Background technique

[0002] Selective Catalytic Reduction (SelectiveCatalyticReduction) technology is applied in the aftertreatment system of diesel engine to eliminate exhaust pollutant NOx, referred to as SCR injection system. The SCR injection system includes controllers, urea pumps, nozzles, connecting pipelines and other components. It is a key component used in diesel engine emission upgrades. The spray condition of the SCR injection system directly affects the conversion efficiency of exhaust pollutants and the crystallization of urea. At present, the engine bench emission performance verification and crystallization test are mainly used to verify whether the SCR injection system can meet the design specifications. The workload is huge, and t...

Claims

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