Abstract
A low-emission diesel fuel (LEDF) is proposed as a way to help the HD diesel engine manufacturer meet stringent U.S. particulate limits beginning in 1991. A new LEDF fuel specification would include sulfur reduction to less than 0.05 percent and a new specification putting a cap or maximum on aromatic content. Additive treatment to control injector deposits for less engine deterioration with time and a combustion improver could also be helpful. A two-fuel strategy would permit orderly phase-in of LEDF. As with unleaded gasoline, a smaller filler neck and nozzle and separate storage tank for dispensing would be required. Unlike the sale of unleaded fuel, the prices of DF-2 and LEDF must be equalized to prevent fuel switching.
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