Various Technology—Cetane Enhancers
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) Free Viewers to use to determine the reductions that would be realized.
- EPA does not endorse the use of any particular company's product.