Title: Vehicle emissions control
Content: meet emissions goals. Therefore, technologies to detoxify the exhaust are an essential part of emissions control. One of the first-developed exhaust emission control systems is secondary air injection. Originally, this system was used to inject air into the engine's exhaust ports to provide oxygen so unburned and partially burned hydrocarbons in the exhaust would finish burning. Air injection is now used to support the catalytic converter's oxidation reaction, and to reduce emissions when an engine is started from cold. After a cold start, an engine needs an air-fuel mixture richer than what it needs at operating temperature, and the catalytic

Title: Defeat device
Content: normal highway cruising, emitting up to three times the maximum allowed NOx pollution. In 2000 the German motorcycle magazine Motorrad reported about a defeat device delivered with the BMW F 650 GS. BMW responded by issuing an improved injection as of 2001 and calling back the models from the previous year. In late 2015, the EPA discovered that software used in millions of Volkswagen Group turbocharged direct injection (TDI) diesel engines included features intended to produce misleading results during laboratory emissions testing. On 10 October 2015, "Consumer Reports" tested a 2015 Jetta TDI and a 2011 Jetta Sportwagen TDI in

Title: Volkswagen emissions scandal
Content: diesel emissions scandals. A discussion was sparked on the topic of software-controlled machinery being generally prone to cheating, and a way out would be to open source the software for public scrutiny. In general, three-way catalytic converter technology, which has been very effective since the early 1980s at reducing nitrogen oxide in petrol engine exhaust, does not work well for diesel exhaust because of its relatively high proportion of oxygen. In 2005, parts of VW intended to purchase the rights to Mercedes' BlueTec system for reducing pollution, but other parts of VW rejected that and preferred to develop their own

Title: Green nanotechnology
Content: reduction, car exhaust reduction, and air purification are just some of the major thrusts that these nanomaterials are being utilized within. Certain applications are not widely spread, but other are more popular. Indoor air pollution is barely on the market yet, but it is being developed more efficiently due to complications with health effects. Car exhaust emission reduction is widely used in diesel fueled automobiles currently being one of the more popular applications. Industrial emission reduction is also widely used. It is n integral method specifically at coal fired power plants as well as refineries. According to Macrothink Institute process

Title: Inlet manifold
Content: assisted brakes, emission control devices, cruise control, ignition advance, windshield wipers, power windows, ventilation system valves, etc. This vacuum can also be used to draw any piston blow-by gases from the engine's crankcase. This is known as a positive crankcase ventilation system, in which the gases are burned with the fuel/air mixture. The intake manifold has historically been manufactured from aluminium or cast iron, but use of composite plastic materials is gaining popularity (e.g. most Chrysler 4-cylinders, Ford Zetec 2.0, Duratec 2.0 and 2.3, and GM's Ecotec series). The carburetor or the fuel injectors spray fuel droplets into the air

Question: What device is added to a car's exhaust system to reduce pollution?
Answer: Catalytic converter