What emissions does a petrol engine output?
Combustion of the air-fuel mixture in a petrol engine results primarily in the emission of the following pollutants: NOx (nitrogen oxides), particulate matter (soot), CO (carbon monoxide) and HC (hydrocarbons). HJS catalytic converters are capable of converting more than 99% of these pollutants once the engine has reached normal operating temperature.
NOx (nitrogen oxides)
- Collective term for compounds of nitrogen and oxygen
- Contribute to "waldsterben" (acid rain)
- Together with hydrocarbons, responsible for smog formation
Particulate matter (soot)
- Solid, particulate matter, such as soot (carbon particles), the emissions problem primarily associated with diesels
- Particularly harmful to health, carcinogenic
CO (carbon monoxide)
- CO emissions are formed during incomplete combustion of a rich air-fuel mixture
- CO is a colourless and odourless gas
- It reduces the blood's ability to absorb oxygen and poisons the body as a result
- Collective term covering all chemical compounds of carbon (C) and hydrogen (H)
- Long-term exposure to HC emissions is carcinogenic
Last update on 2013-07-05 by Dominique Winkler.