Study of the Effects of Fuel Composition, and Injection and Combustion System Type and Adjustment, on Exhaust Emissions from Light-Duty Diesels

摘要

The project included measurement of emissions from four light-duty diesel automobiles operated on nine test fuels, and additional test work at non-standard (both advanced and retarded) injection timing using four of the nine fuels. The four test vehicles were a Mercedes 240D, Oldsmobile 5.7-liter, Peugeot 2.3-liter, and Volkswagen 1.6-liter, all 1982 models. Pre-identified fuel parameters intentionally varied among the test fuels included aromaticity, 10% distilled temperature, and 90% distilled temperature. Two steady-state test conditions (30 mph cruise and 56 BMEP/1700 rpm) were used. Visible smoke, dilute hydrocarbons, dilute CO2 sub 2, and dilute NO sub x were measured continuously during all the tests, with key mode data tabulation for FTP (light-duty transient) cycles.