Cummins has unveiled a new turbocharger, the CCS H2 ICE, tailor-made for hydrogen engines, offering solutions to the challenges posed by the lower energy density and higher airflow requirements of hydrogen compared to traditional fuels. This innovation aims to address efficiency and emissions concerns by providing a higher-airflow lean burn to minimize nitrogen oxide emissions and reduce turbo lag. By opting for a variable-geometry turbocharger with adjustable nozzles, Cummins ensures precise control over airflow to meet these requirements effectively. While Cummins previously hinted at a focus on electric vehicles (EVs), the company has shifted towards emphasizing hydrogen combustion technology as a viable alternative for sustainable transportation. Demonstrating this commitment, Cummins showcased a prototype hydrogen combustion engine in a Peterbilt semi truck, with initial plans to target European fleets before potential expansion to the U.S. market, contingent on the presence of supporting infrastructure. The push towards hydrogen internal combustion is not limited to Cummins, as other major players like Bosch and Toyota are also investing in hydrogen technologies alongside fuel cells. Toyota, for instance, is exploring hydrogen combustion through demonstration projects and concurrently developing fuel-cell powertrains with large batteries for semi trucks, and potentially heavy-duty pickups in the future. This collective investment highlights a growing interest in hydrogen-powered solutions within the automotive and transportation sectors, signifying a positive shift towards more sustainable and environmentally friendly options.