Sichuan Chengbang Haoran Measurement and Control Technology Co., Ltd.
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ET4000—Engine Measurement and Control System (DL Electric Dynamometer)

Case Presentation

ET4000—Engine Measurement and Control System (DL Electric Dynamometer)—Product Background


  With the progress of the times, cars have become an indispensable means of transportation in people’s daily lives. At the same time, people’s requirements for car performance are also getting higher and higher, in terms of car safety, comfort, environmental protection, power, and energy saving. There is concern that the car engine is directly or indirectly affecting some of the main technical skills of the car. Therefore, the detection of engine performance is an important method for evaluating automobile performance in today's automobile industry. This system is based on the national standard GB/T 18297-2001 automobile engine performance test method, GB/T 19055-2003 automobile engine reliability test method and reference to other national standard requirements and various engine test standards, and the engine test purpose, test procedure and test method Carry out type verification test.


Bench picture


  Reference standard:

  ●GB/T 18297-2001 Automobile engine performance test method

  ●GB/T 19055-2003 automobile engine reliability test method

  ●GB/T 17692-1999 Test Method for Net Power of Automobile Engine

  ● GB/T 17691-2005 "Automotive Compression Ignition, Gas Fuel Ignition Engine and Vehicle Exhaust Pollutant Emission Limits and Measurement Methods (China Phase III, IV, V)" requirements, run ESC, ELR cycle;

  ●GB 3847-2005 vehicle compression ignition engine and compression ignition engine vehicle exhaust smoke emission limit and measurement method

  ●GB 20891-2014 Non-road mobile machinery diesel engine exhaust pollutant emission limits and measurement methods (China's third and fourth stages)

  ●GB/T 8190.4-2010 reciprocating internal combustion engine emission measurement system can perform automatic program control test in accordance with the NRSC test cycle of EU Directive 97/68/EC (revised version is 2002/88/EC, latest revised version is 2004/26/EC)

  ●The system can perform automatic program control tests in accordance with the ECE R24 visible pollutant test cycle and the test cycle specified by ISO 8178.4.

  ●GB/T 21405-2008 / ISO 14396:2002 Reciprocating internal combustion engine. Determination and measurement method of engine power. Additional requirements for exhaust pollutant emission test

  ● GB/T18297-2001 National Standard for the measurement and test requirements of the engine's comprehensive performance

  ●The ability of engine cold and heat shock test, full speed and full load test and alternating load test specified in GB/T19055-2003 national standard

  ●IEC 61000 electromagnetic compatibility meets series standards

  ●GB2421 Basic Environmental Test Regulations for Electronic Products

  ●GB 4046-83 Safety Design Guidelines for Electronic Equipment

  ET4000—engine measurement and control system (DL electric dynamometer)—topological structure


  ET4000—The engine measurement and control system adopts modular and integrated design. The operation part is ergonomically designed and can complete manual/automatic mode control. It is composed of mechanical system, loading system, guarantee system, measurement and control system, and upper computer software system and other auxiliary systems.

  ●Mechanical system: cast iron platform, shock absorber, engine bracket, exhaust system, shaft connection and other equipment.

  ●Loading system: electric dynamometer, torque measurement system, dynamometer controller, etc.

  ●Guarantee system: engine coolant constant temperature system, engine coolant thermal shock system, engine oil constant temperature system, engine intercooling system, engine fuel constant temperature system, environmental equipment, intake and exhaust system, etc.

  ●Measurement and control system: dynamometer controller, measurement and control instrument, throttle actuator, data acquisition system, fuel consumption measuring instrument, exhaust gas measuring equipment, intake measuring system, various sensors (temperature, pressure, humidity, flow) alarm system, etc. .

  ●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 according to the system. The upper computer completes the functions of test control, data analysis and display, data recording and export according to the test items.

  ET4000—engine measurement and control system (DL electric dynamometer)—system function

  The basic scope and accuracy of the performance bench test of passenger car motors:

  ●Recommended power range: 0~250KW power level, support other customization of other power, speed and torque levels;

  ●Recommended speed measurement range: 0~10000 r/min;

  ●Recommended torque measurement range: 0~500N.m;

  ●Speed ​​measurement accuracy: ±1r/min;

  ●Torque measurement accuracy: ±0.05%F.S;

  The basic scope and accuracy of commercial vehicle motor performance bench test:

  ●Recommended power range: 0~500KW power level, support other customization of other power, speed and torque levels;

  ●Recommended speed measurement range: 0~3300~4500 r/min;

  ●Recommended torque measurement range: 0~3000~3700N.m;

  ●Speed ​​measurement accuracy: ±1r/min;

  ●Torque measurement accuracy: ±0.05%F.S;

  Test items:

  Starting performance test, minimum no-load stable speed test, speed characteristic test, durability bench test, universal characteristic test, power test, idle speed test, external characteristic test, load characteristic test, mechanical efficiency test, speed control characteristic test, durability Bench test, etc.

  ET4000—Engine Measurement and Control System (DL Electric Dynamometer)—Main Features

  01 Functional modularity

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

  02 Advanced measurement methods

  Adopt advanced measurement and control system, including input speed, torque and other tests. Torque speed sampling adopts high sampling rate, which meets the requirements of high precision and fast response of the test system, and provides transient data and characteristic value data, which is convenient for the software to perform the test process data later Comprehensive analysis.

  03 Complete 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

  04 Motor load

  Using asynchronous motor as the test engine load, changing the traditional load mode, improving the dynamic measurement range and accuracy of the torque and speed of the system, improving the loading performance (forward/reverse, reverse drag), shortening the response time of loading, and can be realized The loading of any load curve highly simulates the real-time operating conditions of the engine.

  05Temperature control system equipment

  The use of indirect heat exchange mode makes the engine running with coolant, oil, and turbocharger in the optimal working mode, which ensures that the engine is doing various tests.

  06Humanized design

  Using a professional engine test bench, the engine tooling has three-dimensional adjustment functions, and is convenient for loading and unloading and coaxial adjustment. The system operation is recommended to adopt the vertical cabinet + computer desk control mode, which can complete all test operation layouts in a single position.

  07 Customized testing software

  The engine test system test software developed by the Sichuan Chengbang Software R&D team, according to the national standard requirements test items, classifies the software interface and process, reduces repeated tests, and greatly improves the work efficiency of testers. And it has the functions of real-time curve drawing, transient value capture, trend curve drawing and analysis, multi-parameter combination display, qualified judgment, report export and so on.

  ET4000—engine measurement and control system (DL electric dynamometer)—main application

  ●Various gasoline engines, diesel engines, gas engines, etc.

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