Vehicle-mounted terminal SCR inlet and outlet temperature data consistency test method

A temperature data and vehicle-mounted terminal technology, which is applied in the field of testing the consistency of temperature data at the SCR inlet and outlet of the vehicle-mounted terminal, to achieve reliable data and conclusions, reduce test cost loss, and improve verification work efficiency

Active Publication Date: 2020-07-31
CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD +1
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, relevant test methods are still blank at home and abroad.

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  • Vehicle-mounted terminal SCR inlet and outlet temperature data consistency test method
  • Vehicle-mounted terminal SCR inlet and outlet temperature data consistency test method
  • Vehicle-mounted terminal SCR inlet and outlet temperature data consistency test method

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Embodiment Construction

[0025] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] A method for testing the consistency of temperature data at the entrance and exit of a vehicle-mounted terminal SCR according to the scheme of the present invention includes two test parts: a static test and a dynamic test, and the specific test contents are as follows:

[0028] The transmission of the actual operating parameters of the vehicle to the data platform needs to go through the following four transmission nodes: actual temperature to temperature sensor, temperature sensor to controller, controller to vehicle terminal, vehicle terminal to data platform or remote platform.

[0029] Static test means that the temperature sensor of the SCR inlet and outlet is removed from t...

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Abstract

The invention provides a vehicle-mounted terminal SCR inlet and outlet temperature data consistency test method, which comprises the following steps: 1) static test: when a vehicle is in an in-situ idling state, removing temperature sensors at an SCR inlet and an SCR outlet from an SCR shell, and placing the SCR inlet and outlet temperature sensors in a temperature controller; verifying the consistency of the set value of the temperature controller and the test data of the slave remote platform; and 2) dynamic test: keeping the temperature sensors at the inlet and the outlet of the SCR normally installed in the SCR, keeping the vehicle in a driving state, and verifying the consistency of the data read through the CAN network node and the test data from the remote platform. According to themethod, a static test method and a dynamic test method are adopted, compared with a traditional method of directly punching holes in the catalyst carrier to install the sensor, a test conclusion canbe obtained more quickly, and heavy workload of hardware punching and possible carrier damage risks are avoided. Meanwhile, through static and dynamic data transmission path segmentation confirmation,problem points in the data link are easy to find.

Description

technical field [0001] The invention belongs to the technical field of vehicle testing, and in particular relates to a method for testing the consistency of temperature data at an SCR inlet and outlet of a vehicle-mounted terminal. Background technique [0002] In order to realize the online monitoring and management of the whole vehicle, the National VI emission standard for heavy-duty vehicles (GB 17691-2018 "Heavy-duty Diesel Vehicle Pollutant Emission Limits and Measurement Methods (China Phase VI)" appendix Q) clearly stipulates that the National VI The whole vehicle needs to be installed with remote monitoring terminal equipment, and send monitoring data to the enterprise platform, and the enterprise platform forwards the terminal data to the national platform for unified management. [0003] The data transmission technology of the vehicle-mounted terminal for remote emission management is currently an important means for the national environmental protection departmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01M15/04H04L1/24
CPCG01M15/048G01M17/007H04L1/24
Inventor 任烁今颜燕付铁强郭勇刘麟王凤滨李博尚勋
Owner CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
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