Diesel exhaust
Gaseous exhaust produced by a diesel engine / From Wikipedia, the free encyclopedia
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Diesel exhaust is the gaseous exhaust produced by a diesel type of internal combustion engine, plus any contained particulates. Its composition may vary with the fuel type or rate of consumption, or speed of engine operation (e.g., idling or at speed or under load), and whether the engine is in an on-road vehicle, farm vehicle, locomotive, marine vessel, or stationary generator or other application.[1]
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Diesel exhaust is a Group 1 carcinogen, which causes lung cancer and has a positive association with bladder cancer.[2][3][4][5][6] It contains several substances that are also listed individually as human carcinogens by the IARC.[7]
Methods exist to reduce nitrogen oxides (NOx) and particulate matter (PM) in the exhaust. So, while diesel fuel contains slightly more carbon (2.68 kg CO₂/litre) than petrol (2.31 kg CO₂/litre), overall CO₂ emissions of a diesel car tend to be lower due to higher efficiency. In use, on average, this equates to around 200 g CO₂/km for petrol and 120 g CO₂/km for diesel.