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The hydrogen combustion engine has a peak at high load and can achieve similar efficiency levels as a hydrogen fuel cell. [34] From this, one can deduce that hydrogen combustion engines are a match in terms of efficiency for fuel cells for heavy duty applications. Efficiency decreases for small internal combustion engines.
2007 – Hydrogen 7 is powered by a dual-fuel internal combustion engine–liquid hydrogen 2007 – BMW H2R speed record car – ICE–liquid hydrogen CMB.TECH (Compagnie Maritime Belge)
Liquid hydrogen can be used as the fuel for an internal combustion engine or fuel cell. Various submarines, including the Type 212 submarine , Type 214 submarine , and others, and concept hydrogen vehicles have been built using this form of hydrogen, such as the DeepC , BMW H2R , and others.
The engines must manage the high temperatures of that hydrogen combustion, which may require a more intricate engine design, better fuel-injection technology, and more hydrogen-friendly materials.
In 1970 Paul Dieges patented a modification to internal combustion engines which allowed a gasoline-powered engine to run on hydrogen. [114] Mazda has developed Wankel engines burning hydrogen, which are used in the Mazda RX-8 Hydrogen RE. The advantage of using an internal combustion engine, like Wankel and piston engines, is the lower cost of ...
Liquefied hydrogen is the liquid state of the element hydrogen. It is a common liquid rocket fuel for rocket applications and can be used as a fuel in an internal combustion engine or fuel cell. Various concept hydrogen vehicles have been lower volumetric energy, the hydrogen volumes needed for combustion are large.
The LE-9 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in an expander bleed cycle. Two or three will be used to power the core stage of the H3 launch vehicle. [1] [2] [5] The newly developed LE-9 engine is the most important factor in achieving cost reduction, improved safety and increased thrust.
The LE-5A was the world's first expander bleed cycle engine to be put into operational service. [2] Cryogenic liquid hydrogen fuel for the cycle is drawn through tubes and passages in both the engine's nozzle and combustion chamber where the hydrogen heats up incredibly while simultaneously cooling those components. The heating of the initially ...
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