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  2. Verified Technologies for SmartWay and Clean Diesel

Various Technology—Cetane Enhancers

Related Topics
  • Verified Technologies List for Clean Diesel
  • Contact List for Manufacturers and Organizations

Cetane enhancers are compounds added to diesel fuel oil to raise the fuel's measured cetane level. The addition of cetane enhancers to diesel fuel is one recognized retrofit technology used to reduce diesel engine emissions. Emission reduction information is provided below.

Emissions Reduction Performance Information for Cetane Enhancers

Engine Model/Application

Highway, heavy duty, 4 cycle, non-EGR-equipped engines

Reduction in particulate matter (PM) n/a
Reduction in nitrogen oxide (NOx) 0-5%
Reduction in hydrocarbons (HC) n/a
Reduction in carbon monoxide (CO) n/a

Notes:

  • Reductions must be calculated for a particular diesel fuel. Download this  cetane enhancement NOx reduction calculation file (xls) (18 KB, May 2007)  Free Viewers to use to determine the reductions that would be realized.
  • EPA does not endorse the use of any particular company's product.

Verified Technologies for SmartWay and Clean Diesel

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Last updated on August 26, 2024
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