Simple water trick cuts diesel engine pollution by over 60%

Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel. During combustion, the water rapidly vaporizes, triggering micro-explosions that improve fuel mixing and lower combustion temperatures. Studies show this technique can slash nitrogen oxide and soot emissions by more than 60% while sometimes even improving engine efficiency. Because it works in existing engines without redesign, it could provide a quick path to cleaner diesel use. Diesel engines play an important role in transportation, agriculture, and industrial equipment because they are reliable and capable of delivering strong power. At the same time, they are a significant source of air pollution. Diesel exhaust contains... [3438 chars]