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Postprocessing system control method, postprocessing electronic control unit and controller

A technology of electronic control unit and control method, which is applied in the direction of electric control of exhaust treatment device, diagnostic device of exhaust treatment device, exhaust treatment, etc., to achieve the effect of improving the efficiency of troubleshooting

Inactive Publication Date: 2014-01-22
WEICHAI POWER CO LTD
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Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a control method of the post-processing system, a post-processing electronic control unit and a controller, so as to solve the technical problems of long confirmation time and low maintenance efficiency of the post-processing system. Provide technical solutions as follows:

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  • Postprocessing system control method, postprocessing electronic control unit and controller
  • Postprocessing system control method, postprocessing electronic control unit and controller

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Embodiment Construction

[0037] In the existing after-treatment system troubleshooting, when the after-treatment system fails and needs to be turned on and the torque is limited, the service personnel connect to the ECU through INCA (a kind of engine calibration software) to check the fault management memory (DSM) to determine the specific fault At this time, since the fault is not reported in the fault management system (DSM) of the ECU, the service personnel cannot immediately confirm that it is a fault in the post-processing system, resulting in low efficiency in fault elimination and fault repair. The control method of the post-processing system provided by the present invention, the post-processing electronic control unit and the controller can find out the fault point in time by setting the fault code, and then repair the fault point to improve the repair efficiency. In the following, a method for controlling an aftertreatment system provided by the present invention will firstly be introduced in...

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Abstract

The invention discloses a postprocessing system control method, a postprocessing electronic control unit and a controller. The postprocessing system control method includes the steps of enabling the controller to receive a failure indication code sent by the postprocessing electronic control unit, enabling the controller to judge whether the received failure indication codes are equal to one of a plurality of pre-stored postprocessing system failure indication codes or not, enabling the different pre-stored failure indication codes to correspond to different alarm operations, recording the failure indication codes if the received failure indication codes are equal to one of the multiple pre-stored postprocessing system failure indication codes, and executing the corresponding alarm operations according to the failure indication codes. Rapid postprocessing system failure location is achieved, and the postprocessing system failure overhaul efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a control method of an aftertreatment system, an aftertreatment electric control unit and a controller. Background technique [0002] As a kind of power machinery, diesel engine has made outstanding contributions to the development of society, but it also causes environmental pollution. With the increasingly stringent national regulations, the requirements for diesel engine emissions are getting higher and higher, and it is becoming more and more difficult to achieve emission compliance only by improving engine technology. In this case, the SCR (Selective Catalytic Reduction Technology) after-treatment system is introduced. The basic working principle of the SCR post-processing system is as follows: [0003] The diesel engine exhaust flows out of the turbocharger turbine and enters the exhaust pipe. At the same time, the urea injection unit installed on the exhaust pip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00F01N11/00
CPCY02T10/47Y02T10/40
Inventor 王秀雷孟媛媛施泰峰
Owner WEICHAI POWER CO LTD
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