"Hydrogen Internal Combustion Engine Vehicles: Advantages, Challenges, and Future Potential"
A hydrogen internal c ombustion engine vehicle (HICEV) is a type of hydrogen vehicle that uses an internal combustion engine (ICE) to generate power. Unlike hydrogen fuel cell vehicles that use electrochemical reactions to produce electricity, HICEVs modify traditional gasoline-powered internal combustion engines to run on hydrogen fuel. These vehicles have several advantages, such as the absence of carbon emissions, as hydrogen combustion does not produce carbon dioxide (CO2). However, hydrogen combustion engines are not considered zero-emission vehicles because they can produce oxides of nitrogen (NOx), similar to other high-temperature combustion fuels like gasoline or diesel. Hydrogen internal combustion engines have a long history, with early designs dating back to the 1800s. Over the years, various manufacturers and research institutions have developed hydrogen-powered engines, including Mazda with their hydrogen rotary engines and BMW with their Hydrogen 7 luxury car. HICEVs h