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This paper presents results from an extended analysis of a supercharged gas turbine concept initially proposed by Ford Motor Company in the 1960s. The concept was augmented through individual component improvements and utilization of new technologies developed over the 60 years since the inception of the original concept, known as the Ford “Type 704” engine. The model was constructed using Aspen Plus software and was validated in terms of the drive shaft power and brake-specific fuel consumption. The relative errors versus the data published by Ford were 0.06% in BSFC and 0.7% for shaft power and total fuel mass flow. The BTE matched the original Ford values to three decimal places. Having validated the model, a series of modernization steps were undertaken to bring the technology from six decades ago to a modern level. The model 704 has two spools, each connecting a compressor to its driven turbine with a separate power turbine positioned between the two other turbines.

The Wankel rotary engine has been an attractive alternative for transportation due to its unique features of lightweight construction, small size, high power density, and adaptability to various fuels. This paper aims to investigate the performance of air-fuel mixing in a hydrogen-fuelled Wankel rotary engine using different fuelling strategies. To achieve this, 3D computational fluid dynamics (CFD) simulations were conducted using CONVERGE software on a prototype engine with a displacement of 225 cc, manufactured by Advanced Innovative Engineering UK. Initially, the simulations were validated by comparing the results with experimental data obtained from the engine fuelled with conventional gasoline under both motored and fired conditions. After validating the model, simulations were conducted on the premixed hydrogen engine combustion, followed by more detailed simulations of port fuel injection (PFI) and direct injection (DI) of hydrogen in the engine.