Simulation analysis and improvement of the transient performance of a turbocharged hydrogen engine

The engine's exhaust gas which can propel the vanes of a turbocharger raises the engine's power output. A turbocharger's response lag brings about special difficulties to the turbocharged hydrogen engines in the vehicle trailing. This paper investigates the problems related to the engine's transient processes: the governor's dynamic properties, the hydrogen injection's performance, speed changes of the engine and the turbocharger, the moving of the working condition and coefficients of the turbocharger. Variation of the turbine's equivalent flow area has little effect on the engine's transient performance. Proper reducing of turbine's momentum and charging air to accelerate the turbine will improve the engine's acceleration property.