EGR effects on hydrogen engines performance and emissions [ ]


Hydrogen as a fuel in the internal combustion engine can be a useful alternative to the use of fossil fuels. The depletion of oil reser-voirs and the environment pollution are the major obstacles related to using conventional fuels whether gasoline or diesel. In this article, the hydrogen engine fundamentals are described, and the hydrogen abnormal combustion phenomenon is discussed like back-fire, pre-ignition, and knock, and emissions of NOx.