Have you ever opened the hood of your car and wondered what was going on in there? A car engine can look like a big confusing jumble of metal, tubes and wires to the uninitiated. You might want to know what's going on simply out of curiosity. Or perhaps you are buying a new car, and you hear things like "3.0 liter V-6" and " dual overhead cams " and "tuned port fuel injection ." What does all of that mean?
In internal combustion engines , exhaust gas recirculation ( EGR ) is a nitrogen oxide ( NOx ) emissions reduction technique used in petrol/gasoline and diesel engines . EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders .
A catalytic converter is a vehicle emissions control device which converts toxic byproducts of combustion in the exhaust of an internal combustion engine to less toxic substances by way of catalysed chemical reactions.
Chemists at the University of California, San Diego have demonstrated the feasibility of exploiting sunlight to transform a greenhouse gas into a useful product.