Technical Paper
An Early-Design Methodology for Predicting Transient Fuel Economy and Catalyst-Out Exhaust Emissions
1997-05-19
971838
The methodology has been validated for an FTP urban driving schedule with known fueling rates and engine speeds for a 4-cylinder engine. Predictions have been found in very good overall agreement with transient measurements of exhaust gas, cooling fluid and catalyst brick temperatures, as well as recorded FTP cycle emissions and fuel economy.