Engine offline test-Hunan Xiangyi Power Testing Instrument Co., Ltd.

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Engine offline test

Publication Time:

2022-05-12

Author:

Source:

1 Overview of Engine Offline Testing

Engine offline test benches are mainly used for Mass production factory testing by engine manufacturers ， Engines from the assembly line can be transported via pre-assembly lines, AGV 、 RGV Intelligent automated logistics systems automatically enter the test bench for automated testing 。

2 Types of Engine Test Benches

2.1 Eddy current dynamometer engine offline test bench

2.2 Hydraulic dynamometer engine offline test bench

2.3 Electric dynamometer engine offline test bench

3 Functions of Engine Test Benches

Mainly used for engine factory testing:

- Idle speed test: Routine test, evaluating idle speed fluctuation;
- Gross power test: Routine test , Automatic operating condition control.
- Net power test: Routine test , Automatic operating condition control.
- Load characteristic test: Routine test, an important basis for vehicle power matching, automatic operating condition control;
- Universal characteristic test: Routine test, an important basis for vehicle power matching, the test method is similar to the load characteristic test;
- Endurance test: The test can be completed under automatic operating conditions;
- External characteristic test;
- Full speed, full load;
- Mechanical loss power test;
- Engine reverse drag test;

4 Technology and National Standards

Serial Number	Standard Name	Standard Number
The equipment should meet and complete the relevant test standards and cycles
1	Automotive engine performance, power test methods and user-defined test cycles	GB/T 18297-2001 GB/T 17692-1999 ECE R85/00
2	Reciprocating internal combustion engine Performance Part 1 Part: Calibration and test methods for power, fuel consumption and oil consumption Additional requirements for general-purpose engines	GB/T 6072.1-2008
3	Automotive engine reliability test methods	GB/T 19055-2003
4	Internal combustion engine Determination and measurement methods of engine power General requirements	GB/T 21404-2008
5	Reciprocating internal combustion engine Performance Part 3 Part: Test measurement	GB/T 6072.3-2008
6	Reciprocating internal combustion engine Safety Part 1 Part: Compression ignition engines	GB/T 20651.1-2006
7	National V, National VI emission test cycles	GB/T17691-2005 and GB/T17691-2018
8	Reciprocating internal combustion engine Emission measurement Part 3 Part: Definition and measurement methods of steady-state exhaust smoke density	GB/T 8190.3-2003
9	Emission limits and measurement methods for exhaust pollutants from diesel engines for non-road mobile machinery (China's third and fourth stages)	GB 20891-2014
10	Emission limits and measurement methods for exhaust pollutants from compression ignition and gas fuel ignition engines for vehicles (chassis dynamometer method)	DB11/ 964-2013

5 Topology

6 Xiangyi Advantages

Test Bench Features

Automatic centering and connection of the engine flywheel shaft and dynamometer main shaft can be achieved

Automatic clamping of the special tray

Quick connection of fuel, oil, and coolant pipes

Quick connection of starting power supply and test electrical lines

Quick connection of engine exhaust pipe and test bench exhaust pipe

The electric dynamometer loading meets the energy-saving and environmental protection requirements of Euro V, Euro VI new emission national standards

Modular design:

Mechanical, electrical, and software all adopt modular design, allowing for flexible construction of the test environment according to different test objects;

Advanced measurement and control system:

Shares a mature platform with other Xiangyi power testing systems, data acquisition, control, storage, and protection are all user-definable, the human-machine interface is user-friendly, and it has a one-button automatic test function, reducing the complexity of the test and reducing the workload of the test personnel;
Suitable for different user groups, easy to use, and combines intelligence, openness, and flexibility.

Safety protection
It has system-level protection and user-defined hierarchical protection measures to ensure the safe operation of the test bench and test;
The test bench can be connected to a vibration monitoring system, which displays the vibration curve in the time domain and frequency domain in real time, and the vibration trend during the test. It automatically alarms and shuts down when the vibration monitoring threshold is triggered.

Energy saving and environmental protection
Electric dynamometer, energy can be recycled, achieving energy saving and environmental protection