LCEG-001 - Engine Control and Measurement System (DL Power Dynamometer) - Product Background

Overview:

With the advancement of the times, cars have become an indispensable means of transportation in people's daily lives. At the same time, the demands for vehicle performance have increased significantly, with a focus on safety, comfort, environmental protection, power, and energy efficiency. The car engine directly or indirectly influences various key technical skills of the vehicle. Therefore, testing engine performance is a crucial method for the automotive industry to evaluate vehicle performance today. This system conducts type verification tests on the objectives, procedures, and methods of engine testing, based on the national standard GB/T 18297-2001 "Test Methods for Automotive Engine Performance," GB/T 19055-2003 "Test Methods for Automotive Engine Reliability," and in accordance with other national standards and various engine testing standards.

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Reference Standard:

● GB/T 18297-2001 Test Methods for Automotive Engine Performance

● GB/T 19055-2003 Test Methods for Reliability of Automotive Engine

● Method for Net Power Test of Automotive Engines - GB/T 17692-1999

●Compliance with the requirements of GB/T 17691-2005 "Emission Limits and Measurement Methods for Exhaust Pollutants from Diesel Engines for Motor Vehicles and Gasoline Engines for Motor Vehicles Using Gasoline or Other Gases (China III, IV, V Stages)" and operation of the ESC (Engine Start/Stop) and ELR (Engine Load Reducing) cycles.

● GB 3847-2005 Limitations and Measurement Methods for Exhaust Smoke Emissions from Automotive Diesel Engines and Diesel Engine Vehicles

● GB 20891-2014 Emission Limits and Measurement Methods for Diesel Exhaust Pollutants from Non-Road Mobile Machinery (China's Third and Fourth Stages)

● GB/T 8190.4-2010 Reciprocating Internal Combustion Engine Emission Measurement System can automatically perform programmed tests according to the NRSC test cycle as specified in EU Directive 97/68/EC (revised as 2002/88/EC, latest revision 2004/26/EC)

The system can automatically perform programmed tests according to the ECE R24 visible emissions test cycle and the test cycle specified in ISO 8178.4.

● GB/T 21405 - 2008 / ISO 14396:2002 Reciprocating Internal Combustion Engines - Methods for Determination and Measurement of Engine Power - Additional Requirements for Exhaust Emission Tests

●Measurement and test requirements for engine comprehensive performance as specified in GB/T18297-2001 National Standard

● Capabilities for engine cold and hot shock tests, full speed and full load tests, and alternating load tests as specified by GB/T19055-2003 National Standard

●IEC 61000 Electromagnetic Compatibility (EMC) Compliance Series Standards

● GB2421 Basic Environmental Test Procedures for Electronic Products

● Guidelines for Safety Design of Electronic Equipment - GB 4046-83

LCEG-001 - Engine Control and Measurement System (DL Power Dynamometer) - Topology

LCEG-001 - The engine control and monitoring system features modular and integrated design, with an ergonomically designed operational section capable of manual/automatic mode control. It is composed of additional systems such as the mechanical system, loading system, support system, monitoring system, and host computer software system.

● Mechanical System: Consists of equipment such as cast iron platforms, shock absorbers, engine mounts, exhaust systems, and shaft connection parts, etc.

● Load System: Power dynamometer, torque measurement system, dynamometer controller, etc.

● Protection System: Engine coolant temperature control system, engine coolant cold-hot shock system, engine oil temperature control system, engine intercooler system, engine fuel temperature control system, environmental equipment, intake and exhaust systems, etc.

● Measurement and Control System: Comprising dynamometer controllers, measurement instruments, throttle actuators, data acquisition systems, fuel consumption meters, exhaust gas measurement equipment, intake measurement systems, and various sensors (temperature, pressure, humidity, flow) with alarm systems.

● Software System: The master control software is divided into modules such as data collection and communication, data collection settings, real-time data exchange control, and data processing. It performs functions like test control, data analysis and display, data recording, and export based on the master control unit and the test project.

LCEG-001 — Engine Measurement and Control System (DL Power Dynamometer) — System Functions

Passenger Vehicle Motor Performance Bench Test Basic Scope and Accuracy:

● Recommended Power Range: 0~250KW power rating, supports customization for other power, speed, and torque ratings.

Recommended RPM Measurement Range: 0~10,000 rpm

●Recommended Torque Measurement Range: 0~500 N.m

● Rotational Speed Accuracy: ±1r/min

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

Basic scope and accuracy of commercial vehicle motor performance bench testing:

● Recommended Power Range: 0~500KW power ratings, supporting customization for other power, speed, and torque ratings.

●Recommended speed measurement range: 0~3300~4500 rpm

Recommended Torque Measurement Range: 0~3000~3700 N.m

● Rotation 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 Rig Test, Universal Characteristic Test, Power Test, Idling Test, External Characteristic Test, Load Characteristic Test, Mechanical Efficiency Test, Speed Control Characteristic Test, Durability Rig Test

LCEG-001 — Engine Monitoring System (DL Power Dynamometer) — Key Features

01 Modular Functionality

All racks are assembled using modular design, allowing for a concentration of module combinations into a single testing system. Customers can add or remove test modules based on different test objects.

02 Advanced Measuring Techniques

Utilizing advanced measurement and control systems, including tests for input speed and torque, the torque-speed sampling employs a high sampling rate to meet the high precision and rapid response requirements of the testing system. It also provides transient and characteristic value data, facilitating comprehensive analysis of the test process data by software in the later stage.

03 Comprehensive Testing Items

According to the national standard's testing requirements, testing items can be added or reduced based on the configuration modules, and can meet the requirements for various types of testing.

04 Motor Load

Utilizing an asynchronous motor as the test engine load, this approach modifies the traditional loading method, enhancing the dynamic measurement range and accuracy of the system's torque and speed. It improves loading performance (both forward and reverse, as well as reverse traction), reduces the response time for loading, and allows for loading along any specified load curve, providing a highly realistic simulation of the engine's real-time operating conditions.

05 Temperature Control System Equipment

Utilizing an indirect heat exchange mode ensures that the engine operates with the optimal working conditions for coolant, oil, and turbocharger during operation, providing a safeguard for the engine during various tests.

06 User-friendly Design

Utilizing professional engine test benches, the engine mounting features three-dimensional adjustment capabilities, making it easy to install and align. The system operation is recommended to use a standing cabinet plus computer desk control mode, allowing for a complete layout of test operations at a single location.

07 Customized Test Software

Developed by the Suzhou Licesoft R&D team, the engine test system test software categorizes test items according to national standards, streamlining the software interface and process to minimize redundant tests and significantly enhance the efficiency of test personnel. It also features real-time curve plotting, transient value capture, trend curve plotting and analysis, multi-parameter combination display, qualification determination, and report export functions.

LCEG-001 - Engine Control and Measurement System (DL Power Dynamometer) - Main Applications

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