SCR post-processing integrated control system and method based on working condition judgment and modularization
An integrated control system and modular technology, which is applied to the electronic control of exhaust gas treatment devices, exhaust gas treatment, and diagnosis devices of exhaust gas treatment devices, etc., can solve the problem of different working principles, workload, and The cost of components increases and other issues, to achieve the effect of rapid selection and calibration switching, reducing the amount of repetitive work
Active Publication Date: 2019-08-30
WUXI WEIFU HIGH TECH CO LTD
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Problems solved by technology
[0005] The working principles of the two SCR post-processing systems are not exactly the same, so designers need to develop and maintain the two systems at the same time, and the calibration and application methods of the two systems are relatively independent, so in the process of development and calibration, and customer use and maintenance , which will inevitably lead to an increase in workload and component costs
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[0041] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0042] Such as figure 1 As shown: In order to realize the effective integration of two SCR post-processing systems, the present invention includes an electronic control unit 101; the electronic control unit 101 is connected with a non-air auxiliary device and an air auxiliary device, and the electronic control unit 101 is set for The SCR post-processing module 104 that controls the working state of the non-air auxiliary device and the air auxiliary device, the electronic control unit 101 is connected to the ambient temperature sensor 112, the upstream temperature sensor 113 of the catalytic converter and the NOx sensor 114 through the SCR post-processing module 104;
[0043] The electronic control unit 101 receives the selection switch signal, and selects the non-air assisted device or the air assisted device to be used through the SCR post-processing module 10...
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The invention relates to an SCR post-processing integration control system and method based on working condition judgment and modularization. The SCR post-processing integration control system comprises an electronic control unit. A non-air auxiliary device and an air auxiliary device are connected to the electronic control unit. The electronic control unit is internally provided with an SCR post-processing control module used for controlling the working state of the non-air auxiliary device and the working state of the air auxiliary device. The electronic control unit is connected with an environment temperature sensor, a catalytic converter upstream temperature sensor and an NOx sensor through an SCR post-processing module. The electronic control unit receives a selection switching signal and selects the non-air auxiliary device or the air auxiliary device needing to be used according to the selection switching signal through the SCR post-processing module. According to the SCR post-processing integration control system and method based on working condition judgment and modularization, the structure is compact; two kinds of SCR post-processing systems can be effectively integrated; the rated workload is decreased; the cost is reduced; the application range is wide; and the safety and the reliability are achieved.
Description
technical field [0001] The invention relates to a system and method, in particular to an SCR post-processing integrated control system and method based on working condition judgment and modularization, belonging to the technical field of diesel engine post-processing systems. Background technique [0002] At present, the SCR after-treatment system includes two working principles: non-air-assisted system and air-assisted system. [0003] The non-air auxiliary system is mainly based on the sensor signals such as the upstream temperature sensor of the catalytic converter and the ambient temperature sensor, combined with the current engine operating conditions (engine speed, cycle fuel injection volume, etc.), to control the Tianlan supply unit, and transfer the Tianlan storage unit Tianlan is pumped to the Tianlan supply unit, and the electronic control unit (ECU1 or DCU1) controls the Tianlan metering unit to inject Tianlan into the catalyst carrier for catalytic reduction rea...
Claims
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IPC IPC(8): F01N9/00F01N11/00
CPCF01N9/00F01N11/002F01N2560/026F01N2560/06Y02T10/40
Inventor 杨建川王萧杨文燕
Owner WUXI WEIFU HIGH TECH CO LTD