31-08-2017, 03:19 PM
The catalytic converters are connected to the exhaust system of a consist of a ceramic box filled with a honeycomb of rare metals like platinum, rhodium and palladium. The honeycomb structure provides a surface, and metals act as catalysts of reactions that convert hazardous emissions to less harmful by-products. Carbon monoxide becomes carbon dioxide, and the hydrocarbons are converted to carbon dioxide and water. Leading models can also reduce nitrogen oxides to nitrogen, and this action on three types of emission gives the devices their name; three-way Catalytic converters. Currently, 'cat' converters are widely considered the most effective way to clean exhaust gases: they can reduce up to 90 percent. But they still have drawbacks. Some type of pollution researchers say they have found traces of catalysts in plants near roads. Current models are most effective in air / fuel 15: 1. Therefore, they need a sensor, called a lambda probe, attached to the exhaust to return the information to the fuel injection system. Cars equipped catalytic converters should also use unleaded ordinary gasoline would harm the catalysts. To avoid this, such cars have Closer fuel loads, so that wide nozzles on leaded petrol pumps they do not fit in the car.