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Verified Technologies for SmartWay and Clean Diesel

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