Introduction

 
EG&G Automotive Research was commissioned by Shoppa's Material Handling to perform comparative tail pipe emissions with and without fuel line catalyst. Two vehicles were evaluated and single measurements were taken in each condition. Fuel economy and emissions were evaluated using the Federal Test Procedure (FTP) and the Highway Fuel Economy Test (HFET). The fuel line catalyst was installed after the first emissions test and approximately two hundred miles were put on the vehicles before the final test.
 
Test Vehicles
 
1997 Dodge Stratus, VIN:1B3EJ46X5VN696803, 35,368 miles
 
1999 Dodge Caravan, VIN:2B4GP44G7XR156574, 24 miles
 
 
Test Outline
 
Baseline EPA FTP and HFET
Installation of fuel line catalyst
200 mile accumulation
EPA FTP and HFET
 
Test fuel: Reformulated gasoline supplied by Shoppa's material Handling, Inc.
Mileage accumulation performed by EG&G
Installation of fuel line catalyst performed by Shoppa's Material Handling, Inc.
 
Fuel economy for city highway driving (FTP and HFET, respectively) is calculated using a carbon balance formula. The carbon balance procedure for measuring fuel economy relates the carbon products in the vehicle exhaust to the amount of fuel burned during the test. Detailed explanations of the calculations can be found in the Federal Register.
 
Modal emissions evaluations were performed on all tests. A sample was taken before the catalyst along with the bag sample. This allows for analysis of the emissions before the catalyst and allows for catalytic converter efficiency calculations. All fuel economy calculations are based on bag data.
 
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