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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.
1991 – Mazda HR-X hydrogen Rotary; 1993 – Mazda HR-X2 hydrogen Rotary; 1993 – Mazda MX-5 Miata hydrogen Rotary; 1995 – Mazda Capella, first public street test of the hydrogen Rotary engine; 2003 – Mazda RX-8 Hydrogen RE hydrogen-gasoline hybrid Rotary; 2005 – Mazda Premacy Hydrogen RE Hybrid; 2007 – Mazda Hydrogen RE Plug in Hybrid
Hydrogen internal combustion engine cars are different from hydrogen fuel cell cars. The hydrogen internal combustion car is a slightly modified version of the traditional gasoline internal combustion engine car. These hydrogen engines burn fuel in the same manner that gasoline engines do; the main difference is the exhaust product.
In 2008, The Boeing Fuel Cell Demonstrator achieved straight-level flight on a crewed mission powered by a hydrogen fuel cell. 2008 - Aircraft, Boeing [80] 2015 - Drone, Intelligent Energy, UK tested successfully Drones with Hydrogen fuel cell engine. [81] 2016 - HY4 is the first passenger aircraft in Germany. [82]
Hydrogen fuel enhancement is the process of using a mixture of hydrogen and conventional hydrocarbon fuel in an internal combustion engine, typically in a car or truck, in an attempt to improve fuel economy, power output, emissions, or a combination thereof.
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Tenneco is working to accommodate growing demand to find H 2-ICE solutions for hard-to-abate mobility sectors.; The H 2-ICE test cell in Burscheid, Germany, operational since Q4 2022, was expanded with two additional cells, and a fourth new H 2-ICE test cell was recently commissioned in Ann Arbor, Mich.
Rotary engines of the Wankel design are used in some automobiles, aircraft and motorcycles. These are collectively known as internal-combustion-engine vehicles (ICEV). [18] Where high power-to-weight ratios are required, internal combustion engines appear in the form of combustion turbines, or sometimes Wankel engines.