Technical Paper
A Numerical Study on Turbocharging System for PFI-SI Type Hydrogen Combustion Engine
2021-09-05
2021-24-0094
The hydrogen internal combustion engine (H2ICE) has received increasing attention in various industry sectors as it produces nearly zero carbon emissions. However, it has been reported that the power output is lower than the gasoline engine especially for port fuel injection (PFI) type hydrogen engines. It is mainly due to low density of the hydrogen which reduces volumetric efficiency. A turbocharging system can improve the power output by pushing more air into the combustion chamber. However, it was observed that incorrect matching hampers the increment of the power output which results in low specific power (<30kW/L). To achieve the equivalent performance of a turbocharged PFI gasoline engine, the required boosting system for the PFI H2ICE has been numerically investigated using 1D engine simulation. As a base engine, a 1.6L turbocharged PFI gasoline engine was used.