Test Vehicle -- ERAC 03
Background.
A FuelAid was installed on a 2008 E-450 Ford Cutaway Van, 6.0 liter Turbo Diesel -- Vin #last 8= 8DA32886, utilized by Enterprise Rent-A-Car for shuttling passengers from the airport to the car rental location. The beginning odometer reading was 33,686 miles. The fuel consumption data was gathered byinstalling a ScanGaugeII in the OBDII port. The data consists of fuel used while idling and fuel used while drivingfor a pre-installation date (December 10, 2008) and two post-installment dates (December 17, 2008 and January 7, 2009)Pre and Post Installation Data.Pre-Installation (Baseline) fuel consumption data (December 10, 2008) – While idling, the van was monitored by aScanGaugeII which recorded 2.99 gallons per hour (GPH). The driver made seven round trips for a total of 14.7 miles (at an average speed of 9 MPG) and used 5.98 gallons for an average of 2.458 MPG.Post Installation Data (After) testing conducted on December 17, 2008 – The odometer was up to 35,167.8 miles driven, or 1481.8 miles driven since the baseline data. While idling, the van was monitored by a ScanGaugeIIwhich recorded 1.99 GPH, representing a decline of 1 GPH compared to the baseline, or a 33.4% decrease in fuelconsumption while idling. The driver made six round trips for a total of 12.5 miles (at an average speed of 11 MPH) using 4.32 gallons for an average of 2.893 MPG, or an increase of 17.6% in MPG while driving compared to the baseline.Post Installation Data (After) testing conducted on January 7, 2009 – The odometer was up to 39,153, or 5,467 miles driven since the baseline data. While idling, the van was monitored by a ScanGaugeII which recorded 2.09 GPH, a decline of 0.90 GPH compared to the baseline, or a 30.1% decrease in fuel consumption while idling. The driver made eight trips for a total of 16.7 miles (at an average speed of 11 MPH) using 5.87 gallons of diesel for an average of 2.844 MPG, or an increase of 15.7% in MPG while driving compared to the baseline.
Enterprise Shuttle Bus Test Results Version 1.11/9/08Idling Time/Driving Time Testing conducted on December 31, 2008 – A CarChip OBDII device was installed on the subject vehicle to track idle time versus driving time. The test duration was two hours and 22 minutes, ofwhich one hour and 16 minutes spent at idle, or 53.5% of the time of operation. In this particular location (Raleigh Durham Airport), according to Enterprise, its shuttle buses are in operation 18 hours per day.Conclusions.Driving Savings.This van travels on average 202.481 miles per day (5467 miles/27 days). Using the Pre-Installation (Baseline) MPG of 2.458 equals 82.376 gallons used per day (202.481/2.458). The Post Installation (Baseline) saving of 16%(the approximate average of the two post installation data points (15.7% and 17.6%) on the 82.376 gallons per dayequals a savings of 13.18 gallons per day, or 395.4 gallons per month (30 day month), while driving.Idling Savings.The van operates 18 hours per day with idling time equaling 9.63 hours per day at a 53.5% rate. The Post Installation savings while idling is 0.95 GPH (the average of the two post installation data points (1.0 and 0.90)),multiplied by the 9.63 idling hours equals a savings of 9.148 gallons per day, or 274.44 gallons per month (30 day month), while idling.Combined Savings.The combined savings while driving (395.4 gallons per month) with the savings while idling (274.44 gallons per month) totals 669.84 gallons per month. At $2.50 per gallon for diesel fuel, the savings is $1674.60 per month, or$20,095 per year!