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 - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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