Chassis dynamometer period verification method

Chassis dynamometers are key equipment used to assess vehicle performance and emissions, so they require frequent verification and maintenance during use to ensure the accuracy and reliability of test results. This article will detail the verification methods during the chassis dynamometer, including common verification items and steps, so that operators can better maintain and manage the chassis dynamometer.
1. Calibration and calibration
Before conducting a verification during the chassis dynamometer, the first priority is to ensure that the calibration and calibration work of the chassis dynamometer has been completed. Calibration and calibration are the basis to ensure the accuracy of the test, and the operator should perform calibration and calibration operations regularly in accordance with the standard procedures provided by the equipment manufacturer. This step usually needs to be carried out by professional technicians to ensure the accuracy of the parameters of the chassis dynamometer.
2. Dynamometer equipment verification
2.1 Dynamic dynamometer
Dynamic dynamometer is the core component of chassis dynamometer, so it needs to be checked emphatically. The operator can check by the following steps:
Check the surface of the drum: ensure that the surface of the drum is smooth and has no obvious wear or damage.
Cylinder positioning: Ensure that the cylinder is positioned correctly and the fit between the cylinder and the wheel is good.
Drum rotation test: manually rotate the drum to check whether there is abnormal resistance or abnormal sound.
2.2 Brake System
Brake system is a key component of chassis dynamometer used to simulate the actual driving process. Verification steps include:
Brake disc and brake pad inspection: Ensure that the wear degree of brake disc and brake pad meets the requirements, no abnormal wear or cracks.
Brake force output calibration: Calibrate the brake force output using calibration equipment to ensure the accuracy of the brake force.
3. Vehicle placement and connection
3.1 Vehicle Placement
The chassis dynamometer requires the vehicle to be placed on the drum for testing, so the placement of the vehicle is a critical step. The operator should:
Check the position of the vehicle: ensure that the vehicle is parked accurately and stably on the roller.
Stationary vehicle: Use the safety device equipped with the chassis dynamometer to secure the vehicle to prevent movement during the test.
3.2 Connecting the System
Data transmission and control are carried out between chassis dynamometer and vehicle through connection system. Verification steps include:
Check the data cable and sensor: make sure the data cable is intact and the sensor is working properly.
Calibrate the connection system: Calibrate the connection system using standard tools to ensure accurate data transmission.
4. Verification of environmental conditions
The test results of the chassis dynamometer are greatly affected by environmental conditions, so it is necessary to verify the environmental conditions before testing:
Temperature and humidity measurement: Use a hygrograph to measure the temperature and humidity of the test environment to ensure that it is within the appropriate range.
Ventilation system inspection: Check whether the chassis dynamometer ventilation system is smooth to ensure the air circulation of the test environment.
5. System function test
Finally, the system function test is an important step to ensure the normal operation of the chassis dynamometer. The operator should:
Manual operation: Through the manual operation function of the chassis dynamometer, check whether each component is flexible and reliable.
Automatic test: Run the automatic test program of the chassis dynamometer to check whether the test process is normal and the data is accurate.
Verification during chassis dynamometer is a key step to ensure accurate and reliable test results. Through regular calibration, equipment inspection and system function testing, the chassis dynamometer can be effectively maintained and managed, extending its service life and improving the reliability of the test. The operator should carefully operate during the verification to ensure that each step is correctly executed to ensure the normal operation of the chassis dynamometer.