Defender/Challenger/American Coach F-550 CNG

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Economy Summary Sheet

Fuel Type : CNG
SP. Gravity : 0.557
Heating Value : N/A
Standard Conditions : 60 PSI : 14.7 PSI
Density of Air : 0.0729 lb/scf

Cycle Total Fuel Used (Scf) Total Miles Fuel Economy M/Scf (Measured) Fuel Economy M/Lb (Corrected)
Run # :1, CCW
CBD 238.0 5.73 0.02 0.59
ART 98.0 3.82 0.04 0.96
Commuter 79.0 3.82 0.05 1.19
Total 415.0 13.370000000000001 0.03 0.79
Run # :2, CW
CBD 240.0 5.73 0.02 0.59
ART 94.0 3.82 0.04 1.0
Commuter 76.0 3.82 0.05 1.24
Total 410.0 13.370000000000001 0.03 0.8
Run # :3, CCW
CBD 242.0 5.73 0.02 0.58
ART 93.0 3.82 0.04 1.01
Commuter 78.0 3.82 0.05 1.21
Total 413.0 13.370000000000001 0.03 0.8
Run # :4, CW
CBD 244.0 5.73 0.02 0.58
ART 96.0 3.82 0.04 0.98
Commuter 78.0 3.82 0.05 1.21
Total 418.0 13.370000000000001 0.03 0.79

Idle Consumption
First 20 Minutes Data: 72 Scf Last 20 Minutes Data: 72 Scf
Average Idle Consumption: 216.0 Scf/Hr

Run Consistency (% Difference from overall average of total fuel used)
Run 1 : -0.2 Run 2 : 1.0 Run 3 : 0.2 Run 4 : -1.0

Summary
Average Idle Consumption : 8.77 LB/Hr
Average CBD Phase Consumption : 0.59 M/Lb
Average Arterial Phase Consumption : M/Lb
Average Commuter Phase Consumption : M/Lb
Overall Average Fuel Consumption : M/lb
Overall Average Fuel Consumption : Miles/ Million BTU