1. Pressure control: The testing equipment will be equipped with a precise pressure control system, which can accurately regulate and maintain the test pressure, which helps to prevent over-expansion caused by high pressure.

2. Real-time monitoring: Advanced testing equipment is usually equipped with high-precision sensors and monitoring systems, which can monitor the expansion of the hose in the testing process in real time. This data can be used to analyse the behaviour of the hose under different pressures and adjust the test parameters accordingly.

3. Temperature control: Since temperature changes affect the physical properties of the hose, testing equipment usually includes a temperature control system to maintain a constant temperature in the testing environment.

4. Data recording and analysis: Modern testing equipment is able to record detailed test data, including pressure, temperature and degree of expansion.

5. Flexible fixture design: In order to accommodate the expansion of the hose, the fixture design of the testing equipment is usually flexible, allowing the hose to expand naturally during the test while maintaining the necessary sealing.

6. Simulation of actual working conditions: In order to more accurately assess the performance of the hose in actual use, the testing equipment may simulate the actual working conditions of a vehicle during operation, including factors such as temperature, pressure and vibration.

Considering the physical properties of the hose and the effect of ambient temperature, the air tightness of automotive fuel hoses can be more accurately assessed, thus safeguarding the safety of the automotive fuel system.