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2. Diesel particulate filter - Wikipedia

   en.wikipedia.org/wiki/Diesel_particulate_filter

   Wall-flow diesel particulate filters usually remove 85% or more of the soot, and under certain conditions can attain soot removal efficiencies approaching 100%. Some filters are single-use, intended for disposal and replacement once full of accumulated ash. Others are designed to burn off the accumulated particulate either passively through the ...

3. Exhaust gas recirculation - Wikipedia

   en.wikipedia.org/wiki/Exhaust_gas_recirculation

   In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NO x) emissions reduction technique used in petrol/gasoline, diesel engines and some hydrogen engines. [1] EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. The exhaust gas displaces atmospheric air and reduces O 2 in ...

4. Selective catalytic reduction - Wikipedia

   en.wikipedia.org/wiki/Selective_catalytic_reduction

   Selective catalytic reduction (SCR) means converting nitrogen oxides, also referred to as NO. x with the aid of a catalyst into diatomic nitrogen (N. 2), and water (H. 2O). A reductant, typically anhydrous ammonia (NH. 3), aqueous ammonia (NH. 4OH), or a urea (CO (NH. 2)

5. Idaho wants to end vehicle emissions testing. How will that ...

   www.aol.com/news/idaho-wants-end-vehicle...

   The emissions testing program in Canyon County and Kuna began in 2010 because of an Idaho law that required vehicle emissions tests in airsheds where an ambient air pollutant is at or above 85% of ...

6. Catalytic converter - Wikipedia

   en.wikipedia.org/wiki/Catalytic_converter

   Catalytic converters remove only 20–40% of PM so particulates are cleaned up by a soot trap or diesel particulate filter (DPF). In the U.S., all on-road light, medium, and heavy-duty diesel-powered vehicles built after 1 January 2007, are subject to diesel particulate emission limits, and so are equipped with a 2-way catalytic converter and a ...

7. Your guide to the most interesting — and consequential ...

   www.aol.com/guide-most-interesting-consequential...

   The race: Ballot Measure 1. What's on the ballot: Increase the state's minimum wage to $15 per hour and require employers to provide earned paid sick leave for employees. What's at stake: If ...

8. Neighborhoods in Columbus, Ohio - Wikipedia

   en.wikipedia.org/wiki/Neighborhoods_in_Columbus...

   Holly Hill is a neighborhood located in West Columbus, Columbus, Ohio. Holly Hill is a traditional 1960s suburban neighborhood consisting of mostly brick ranch houses and some bi-level houses. The houses range in size from approximately 860 square feet (80 m 2) up to 1,500 square feet (140 m 2).

9. Trump's media stock falls before insider trading restrictions ...

   www.aol.com/news/trumps-media-stock-falls...

   The company's revenue is equivalent to two Starbucks coffee shops and it is burning cash. If Trump Media's stock price remains at or above $12 through Thursday, then Trump and other insiders will ...