Emission effects of shell LOW NO{sub}x fuel on a 1990 model year heavy heavy-duty diesel engine

摘要

The Environmental Protection Agency (EPA) recently tested a clean diesel fuel developed by Dion & Sons for use in stationary sources. This fuel is known as Amber 363 in Southern California and its technology is licensed outside the Southern California area to Shell Oil Products Company for use as a stationary source fuel. The fuel, hereafter referred to as "Shell LOW N{sub}Ox Fuel," was tested in a 1990 model year heavy heavy-duty diesel engine using both the transient Federal Test Procedure (FTP) for on-highway heavy-duty engines, the steady-state FTP for nonroad heavy-duty engines, and the steady-state generator set test cycle. For each test, EPA measured hydrocarbon (HC), carbon monoxide (CO), nitrogen oxides (NO{sub}x) and particulate matter (PM) emissions. Transient testing showed that the Shell LOW NO{sub}x Fuel lowers NO{sub}x, HC and PM emissions with no statistically significant change in CO emissions for both cold-starts and hot-starts when compared to diesel certification test fuel. Steady-state testing using the nonroad test cycle showed that the Shell LOW NO{sub}x Fuel decreases PM and HC emissions with no statistically significant in CO and NO{sub}x emissions when compared to the base fuel. Steady-state testing using the generator set test cycle showed that the Shell LOW NO{sub}x Fuel increases HC and CO emissions with no statistically significant changes in NO{sub}x and PM emissions when compared to baseline certification diesel test fuel.