Effects of Fuel Parameters on FTP Emissions of a 1998 Toyota with a Direct Injection Spark Ignition Engine 2000-01-1907
The effects of fuel properties on the emissions of a production vehicle with a gasoline direct injection engine operating over the Federal Test Procedure (FTP) cycle were investigated. The vehicle used was a 1998 Toyota Corona passenger car with a direct injection spark ignition (DISI) engine. Engine-out and tailpipe FTP emissions for six fuels and a California Phase 2 RFG reference fuel are presented. Four of the test fuels were blended from refinery components to meet specified distillation profiles. The remaining test fuels were iso-octane and toluene, an iso-alkane and an aromatic with essentially the same boiling point (at atmospheric pressure) that is near the T50 point for the blended fuels. Statistically significant effects, at the 95% confidence level, of the fuels on tailpipe emissions were found. Correlations were sought between the properties of the five blends and the Emissions Indices for engine-out hydrocarbons and NOx and for tailpipe particulates. Correlations were also investigated for relationships between fuel properties and the efficiency of the oxidation catalyst and of the lean NOx trap/catalyst. The correlations identified are discussed.
Citation: Johnson, B., Stovell, C., Matthews, R., Kirwan, J. et al., "Effects of Fuel Parameters on FTP Emissions of a 1998 Toyota with a Direct Injection Spark Ignition Engine," SAE Technical Paper 2000-01-1907, 2000, https://doi.org/10.4271/2000-01-1907. Download Citation
B. E. Johnson, Chad Stovell, Ronald D. Matthews, John Kirwan, Henry Ng, Bob Larsen
Mobil Technology Co. Strategic Research Center, The University of Texas at Austin, Delphi Research Lab., Argonne National Lab.
CEC/SAE Spring Fuels & Lubricants Meeting & Exposition
Gasoline Direct Injection Engines-SP-1547, SAE 2000 Transactions Journal of Fuels and Lubricants-V109-4