Sichuan Chengbang Haoran Measurement and Control Technology Co., Ltd.
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  • GT4000—车用变速箱测试系统1.png

GT4000—Vehicle Transmission Test System

Automotive transmission (MT, AMT, CVT, AT) test system In the transmission system of the automotive industry, automotive transmissions must ensure the performance and product quality of the transmission during product development and factory inspection, so the performance of the transmission According to the national standard QC/T 1022—2015 "Technical Conditions of Reducer Assembly for Pure Electric Passenger Vehicles" and with reference to other national standard requirements and volume assembly test standards, this system conducts test purposes, test procedures and test calculation methods for the gearbox system Type verification test.

Case Presentation

  GT4000—Vehicle Transmission Test System—Product Background

  Overview:

  Automotive transmission (MT, AMT, CVT, AT) test system In the transmission system of the automotive industry, automotive transmissions must ensure the performance and product quality of the transmission during product development and factory inspection, so the performance of the transmission According to the national standard QC/T 1022—2015 "Technical Conditions of Reducer Assembly for Pure Electric Passenger Vehicles" and with reference to other national standard requirements and volume assembly test standards, this system conducts test purposes, test procedures and test calculation methods for the gearbox system Type verification test.

  Bench picture

  Guideline:

  l QC / T 1022—2015 Technical requirements for reducer assembly for pure electric passenger car

  l QC/T 29063-1992 Technical requirements for automotive mechanical transition assembly

  l JASO C203 automobile mechanical transition performance test method

  l JASO C204 Auto Mechanical Continuous Endurance Test Method

  l GB 755-2008 Rotating motor rating and performance

  l GB 50150 Electrical equipment installation engineering electrical equipment handover test standard

  l GB/T 50055-93 Code for Power Distribution Design of General Electric Equipment

  l Machinery manufacturing system according to GB9061-85

  l Electrical system according to GB5226-85

  GT4000—Vehicle transmission test system—Topological structure

  Topological structure diagram

  GT4000 —The vehicle gearbox test system adopts a synchronous, integrated design, the operating part is ergonomically designed, and can complete manual/automatic mode control. It is composed of mechanical system, drive system, loading system, simulation guarantee system, electrical system and upper computer software system.

  l Mechanical system: Cast iron platform, bearing seat, drive system mechanical connection device, load system mechanical connection device, shaft connection part and other equipment.

  l Drive system: high-speed low-inertia drive motor, size, size measuring device.

  l Loading system: low-speed and large-budget loading dynamometer, scale and variable measuring device.

  l Guarantee system: It is composed of gearbox temperature control system and other equipment.

  l Electrical system: drive, load controller, shift mechanism, real-time data acquisition system, data acquisition, alarm system and other equipment.

  l Software system: The upper computer test software is divided into data acquisition communication module, data acquisition setting module, data real-time exchange control module, and data processing module. The upper computer completes the test control, data analysis and display, data recording and exporting functions according to the test items.

  GT4000—Vehicle Transmission Test System—System Function

  Basic range and accuracy:

  ●Drive recommended power range: 0~250KW power level, support other power, steering, level customization;

  ●Measurement range of driving speed: 0~20000r/min;

  ●Driving screw measuring range: 0~500N.m;

  ●Recommended load power range: 0~500KW power level, support other power, conversion, and grading customization;

  ●Rated load measurement range: 0~3000r/min;

  ●Load budget measurement range: 0~10000N.m;

  Pilot projects:

  Gearbox assembly reliability test, gearbox transmission efficiency test, gearbox high oil temperature test, etc.

  GT4000—Vehicle Transmission Test System—Main Features

  01 Functional principle

  All benches are constructed using functional calibration, and are combined in a test system in the form of a combination of modules. Customers can add or remove test modules according to different test objects.

  02Advanced measurement methods

  Adopt advanced real-time measurement and control system, including input electrical parameter test, calibration sampling test, etc. The sampling rate is up to 1000Hz, which meets the requirements of high precision and fast response of the test system, and provides transient data and characteristic value data to facilitate the software follow-up test process The data is fully analyzed.

  03Complete test items

  According to the test requirements specified in the national standard, test items can be added or removed according to the configuration module, which can meet the test items for various types of tests

  04shift mechanism

  The advanced servo mechanism is used to complete the shift test of the manual gearbox shift logic.

  05Drive system

  Using low-inertia asynchronous motor/permanent magnet synchronous motor as the system drive input, improves the system's scale and steering dynamic response characteristics, provides measurement range and accuracy, improves drive performance (forward/reverse), and response time for continuous loading , It can realize the loading of any load curve and highly simulate the real-time operating conditions of the electric drive assembly.

  06 loading system

  The atmospheric pressure low-speed dynamometer is used as the system loading, and the high-precision variable speed is adopted according to the characteristics of the test piece. The serial sensor improves the data dynamic response rate. The system loading adopts the vector/DTC mode to achieve the required high-speed dynamic loading characteristics. , Thereby highly simulating the real-time operating conditions output by the gearbox.

  07Humanized design

  Using a professional gearbox test bench, the fixture has a quick clamping function, and is convenient for loading and unloading. It can be adapted to different gearbox installations. The system operation is recommended to adopt the cabinet + computer desk control mode, which can complete the layout of all test operations in a single position.

  08Customized testing software

  The test system test software developed by the Sichuan Chengbang Software R&D team, in accordance with the national standard requirements test items, classifies the software interface and process, reduces repeated tests, and greatly improves the work efficiency of testers. And at the same time real-time curve drawing, transient value capture, trend curve estimation and analysis, multi-parameter combination display, qualification judgment, report export and other functions.

  GT4000—Vehicle Transmission Test System—Main Application

  l Vehicle gearboxes (MT, AMT, CVT, AT), etc.

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