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Detection tool and method of SCR system diagnostic device

A technology of SCR system and diagnostic device, applied in measuring device, testing electrical device in transportation, measuring electricity, etc., can solve the problems of insufficient objectivity, insufficient testing, low efficiency, etc., to save testing time, save manpower input, The effect of high detection accuracy

Pending Publication Date: 2019-03-01
SHANGHAI XINGRONG AUTOMOBILE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 1) Low efficiency, unable to test in large quantities, unable to replicate quickly
[0012] 2) Rely on the subjective judgment of testers, not objective enough
[0013] 3) The test is not sufficient to cover various working conditions of the device, and the test results do not represent the real situation

Method used

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  • Detection tool and method of SCR system diagnostic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] like figure 1 As shown, a detection tool 10 of an SCR system diagnostic device includes a voltage adjustable output module 11 as a load module, an adjustable resistance module 12, a short circuit module 13 and a power module 14, a first CAN communication module 15, a first interface 16 and MCU controller 17.

[0040] Voltage adjustable output module 11, resistance adjustable module 12, short circuit module 13, power module 14, first CAN communication module 15 and first interface 16 are all connected with MCU controller 17, and voltage adjustable output module 11, resistance can be The adjustment module 12, the short circuit module 13, the power module 14 and the first CAN communication module 15 are all connected to the first interface 16, and the first interface 16 has a plurality of pins corresponding to each load module to form a detection channel corresponding to each load module.

[0041] Among them, the voltage adjustable output module 11 is used for simulating ...

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Abstract

A detection tool of a SCR system diagnostic device comprises a voltage adjustable output module as load modules, a resistance adjustable module, a short circuit module, a power module, a first CAN communication module, a first interface and an MCU controller, wherein the voltage adjustable output module, the resistance adjustable module, the short circuit module, the power module, the first CAN communication module and the first interface are all connected to the MCU controller; the voltage adjustable output module, the resistance adjustable module, the short circuit module, the power module and the first CAN communication module are all connected to the first interface; and the first interface has a plurality of pins corresponding to respective load modules to form detection channels corresponding to respective load modules. The detection tool can efficiently and automatically achieve detection, saves detection time and manpower input, can achieve batch detection, has high detection precision, covers various working conditions, avoids misjudgment caused by human factors, and eliminates the influence of early failed components on equipment.

Description

technical field [0001] The invention relates to the detection technical field of an SCR system diagnostic device, in particular to a detection tool and a detection method of an SCR system diagnostic device. Background technique [0002] With the continuous tightening of national regulations on motor vehicle exhaust emissions, more and more vehicles powered by diesel engines need to be equipped with SCR systems. The NOx reacts to produce N2 and H2O to purify the exhaust gas. High-pressure urea is produced by pressurizing urea through a urea pump. [0003] In actual operation, due to various reasons such as poor quality of urea, harsh working conditions and environment, low maintenance awareness of drivers, and defects in the urea pump itself, the urea pump is easily damaged. After the urea pump is damaged, the vehicle reports an OBD fault. And activate performance limits on the vehicle, urging the driver to make timely repairs. The SCR system diagnostic device is required ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/007
Inventor 蔡继业郝俊杰王伟
Owner SHANGHAI XINGRONG AUTOMOBILE TECH CO LTD
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