The Effect of Car Exhausts on Environment and Humans

The Effect of Car Exhausts on Environment and Humans
When car is filled up with petrol (vapourisation).Present in petrol. Released in exhaust fumesCarcinogens. Combine to produce photochemical smog. Affects asthmaticsmost.Use catalytic converters. Better engine design. Improve petrol tankand pump design. Adjust the fuel-oxygen ratio.Carbon MonoxideIncomplete combustion.Attaches to haemoglobin in humans ? stops oxygen from being absorbed.Is toxic.Adjust fuel:oxygen ratio. Use catalytic converters. Add oxygenates.CO2Burning off hydrocarbons.Greenhouse gas ? global warming.Non hydrocarbon fuels.Oxides of NNitrogen in the air reacts with oxygen and heat in the engineProduces smog when reacts with sunlight. Acid rain ? damages building,kills plant and fish?Catalytic converters ? changes oxides back to N2Oxides of SBurning off sulphur compounds present in fuel.Acid rain.Removing as much sulphur compounds as possible from fuel.Although catalytic converters reduce acid rain, because they reducenitrogen oxides and carbon monoxide, they don?t help with greenhousegases because the CO is converted to CO2.

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