Experiment and simulation of environmental chamber performance for fuel cell vehicle engine system

Comprehensive performance experiments were carried out, and the thermodynamic temperature simulation model was established based on the independently researched and developed environmental chamber (EC) that integrates temperature, relative humidity, and pressure for the environmental worthiness test of fuel cell vehicle (FCV) engines. The results show that the control ranges of temperature, relative humidity, and absolute pressure in the EC are − 40–70 °C, 10–95%, and 100–50 kPa; the deviations are ± 1 °C, ± 2%, and ± 1 kPa; and the uniformities are 0.5 °C, 2.46%, and 0.63 kPa, respectively. Higher requirements for equipment and controlling system are needed to achieve such range, accuracy, and uniformity in a space as large as 95 m 3 . The simulation model accurately and effectively reflects the temperature variation in the EC. Therefore, the proposed model will be used as guidance for the FCV engine temperature test.