GB/Z 44116-2024 "Test Method for Durability of Fuel Cell Engines and Key Components" specifies the durability test method of proton exchange membrane fuel cell engines and their core components (including fuel cell stacks, membrane electrodes, air compressors, hydrogen circulation pumps) for vehicles. The standard is applicable to evaluate the Stability and durability of these key components in long-term operation to ensure their Reliability and performance in actual vehicle applications. The standard describes the test process, parameter setting and test conditions in detail, and quotes relevant terms and definitions (such as average single cell voltage, fuel cell engine reference current, fuel cell stack reference current, etc.) to ensure the accuracy and comparability of test results.