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<blockquote data-quote="MAKAVELI" data-source="post: 2768969" data-attributes="member: 43825">Accordingly to this article it reduces it to almost nothing and hc and co up to 90%. With an increase in mileage.<a href="http://www.dieselforum.org/about-clean-diesel/what-is-scr" target="_blank">What is SCR? | Diesel Technology Forum</a>SCR technology is one of the most cost-effective and fuel-efficient technologies available to help reduce diesel engine emissions. All heavy-duty diesel truck engines produced after January 1, 2010 must meet the latest EPA emissions standards, among the most stringent in the world, reducing particulate matter (PM) and nitrogen oxides (NOx) to near zero levels. SCR can reduce NOx emissions up to 90 percent while simultaneously reducing HC and CO emissions by 50-90 percent, and PM emissions by 30-50 percent. SCR systems can also be combined with a diesel particulate filter to achieve even greater emission reductions for PM. In the commercial trucking industry, some SCR-equipped truck operators are reporting fuel economy gains of 3-5 percent1. Additionally, off-road equipment, including construction and agricultural equipment, must meet EPA&#039;s Tier 4 emissions standards requiring similar reductions in NOx, PM and other pollutants.</blockquote>

[QUOTE="MAKAVELI, post: 2768969, member: 43825"] Accordingly to this article it reduces it to almost nothing and hc and co up to 90%. With an increase in mileage. [URL='http://www.dieselforum.org/about-clean-diesel/what-is-scr']What is SCR? | Diesel Technology Forum[/URL] SCR technology is one of the most cost-effective and fuel-efficient technologies available to help reduce diesel engine emissions. All heavy-duty diesel truck engines produced after January 1, 2010 must meet the latest EPA emissions standards, among the most stringent in the world, reducing particulate matter (PM) and nitrogen oxides (NOx) to near zero levels. SCR can reduce NOx emissions up to 90 percent while simultaneously reducing HC and CO emissions by 50-90 percent, and PM emissions by 30-50 percent. SCR systems can also be combined with a diesel particulate filter to achieve even greater emission reductions for PM. In the commercial trucking industry, some SCR-equipped truck operators are reporting fuel economy gains of 3-5 percent1. Additionally, off-road equipment, including construction and agricultural equipment, must meet EPA's Tier 4 emissions standards requiring similar reductions in NOx, PM and other pollutants. [/QUOTE]

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