Hydrogen combustion engines make the most of current inner combustion expertise however require some modifications for optimum efficiency. Cummins, a number one engine producer, just lately launched a turbocharger particularly designed for hydrogen engines, which function utilizing gaseous hydrogen somewhat than gasoline or diesel. The turbocharger, named the CCS H2 ICE, addresses the challenges posed by hydrogen’s decrease vitality density and larger airflow calls for, as outlined in a Cummins press launch.
Whereas hydrogen combustion is cleaner than conventional fuels, it nonetheless generates some dangerous pollution, together with nitrogen oxide (NOx). Cummins has expertise with NOx emissions; in 2024, the corporate confronted a considerable effective of almost $1.7 billion to resolve allegations of emissions dishonest associated to diesel engines in Ram pickup vans.
To successfully reduce NOx emissions in hydrogen combustion engines, Cummins emphasizes the significance of reaching a higher-airflow lean burn and decreasing turbo lag. Turbo lag happens when there’s a delay in energy supply because of the turbocharger taking too lengthy to construct up enhance after urgent the accelerator. Enhanced management of the turbocharger might help meet these necessities, and for the CCS H2 ICE, Cummins opted for a variable-geometry design. This design options adjustable nozzles that may alter airflow by means of the turbo as wanted.
Cummins has proven dedication to hydrogen expertise, highlighting a prototype hydrogen combustion engine in a Peterbilt semi truck in 2023. Though the present focus is on European fleets, the expertise might doubtlessly be tailored to be used in U.S. vans, supplied there’s enough supporting infrastructure.
Cummins will not be alone in pursuing hydrogen inner combustion expertise; Bosch can also be investing on this space alongside gas cell growth. Furthermore, Toyota is exploring each hydrogen applied sciences, conducting demonstration initiatives for hydrogen combustion whereas concurrently engaged on a hydrogen fuel-cell powertrain, supported by massive batteries for semi vans and doubtlessly heavy-duty pickups.
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