Posted by Brendon-KS on March 21, 2020 at 08:20:12 from (63.245.145.17):
In Reply to: DEF posted by Ellis Kinney on March 21, 2020 at 08:03:51:
Due to the un-throttled airflow, high combustion temperatures, and lean burn diesel engines are really good at combining nitrogen and oxygen into NOx pollutants which in turn create smog. (This is unfortunate since these are the same characteristics that make diesel engines so efficient.) Diesel exhaust fluid is used to convert the NOx into harmless nitrogen and water vapor. This occurs within the "selective catalytic reduction" chamber in the exhaust system by injecting the DEF in once the system reaches a hot enough temperature. The system does work - the current diesel engines produce about 3% of the NOx pollutants as unregulated engines did 25 years ago.
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Today's Featured Article - Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
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