If you want an example of another way of using hydrogen in an internal combustion engine - Toyota has a great example of it at the moment:
Quote:
2024 Toyota Hydrogen HiAce prototype review: Quick drive
Toyota claims hydrogen-fuelled ICE technology is a low-investment and low-cost way to introduce hydrogen as it’s building on existing internal-combustion engine technology. It’s also claimed to “dramatically reduce” CO2 tailpipe emissions and have a similar refuelling time as traditional petrol- or diesel-fuelled vehicles.
The company says hydrogen-fuelled ICE technology has a combustion efficiency that’s higher than a petrol engine and much closer to a diesel-powered engine. As such, it’s claimed to be best suited for high loading and high towing use cases.
Unlike the regular Toyota HiAce sold in Australia, which is now only powered by a 2.8-litre four-cylinder turbo-diesel, this hydrogen prototype is powered by a 3.4-litre twin-turbo V6 engine modified to run on compressed hydrogen gas instead of petrol.
This engine is currently used with petrol in the Lexus LX 600 in Australia, as well as the Toyota LandCruiser 300 Series in other markets. Toyota claims one of the few modifications made to the engine are the injectors, which allow it to run on compressed hydrogen gas.
The hydrogen-fuelled V6 engine in the HiAce prototype produces 120kW of power and 354Nm of torque. This is 185kW and 296Nm less than its petrol-fuelled counterpart. Drive is sent to the rear wheels only through a 10-speed automatic transmission.
The internal combustion engine is fed by three hydrogen fuel tanks similar to the ones used in the current Mirai hydrogen fuel-cell electric vehicle (FCEV). The Mirai has a hydrogen capacity of 5.6kg.
Toyota claims the Hydrogen HiAce prototype has a range of around 200km. For context, the Mirai has an NEDC claimed range of 650km.
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https://www.carexpert.com.au/car-rev...ew-quick-drive
There's a vehicle using hydrogen like you would unleaded in an internal combustion engine, and its a piece of ****.
You can use it as a fuel cell to generate electricity for an electric motor, but then you take into account all the problems of making and storing hydrogen, when you can do the exact same thing with a normal EV that you just plug into the wall with existing infrastructure.
BMW tried the exact same thing in the early 1990s and again in 2007 with their Hydrogen 7, and it did 50L/100km on hydrogen and made a heap less power on hydrogen than the unleaded version of their V12.