Search Results

Many technologies are being developed to solve the trouble of the urban pollution. Among other solutions (improvements in engine control and combustion, electrical propulsion) one of the foreseen ways is the employment of low or zero carbon content fuels, such as hydrogen. In fact a nearly zero emission vehicle may be obtained through the hydrogen propulsion; in this case the only polluting agents are nitrogen oxides if an internal combustion engine is used. Though fuel cells are considered as the most promising solution in the long term, they are still in their prototypical phase and the use of the internal combustion engine use remains until today a relevant topic. It has been evident since the 80s that direct injection is the only method to get a high specific power without pre-ignition and backfire phenomena. However this technique shows a higher difficulty in getting a well-mixed charge.