ROUSH CLEANTECH, LLC. Download PDF Report
Roush CleanTech, LLC., a Michigan Limited Liability Company submitted a model 2011, propane-powered 15 seat/25-foot bus, for a partial STURAA test in the
The interior of the bus is configured with seating for 15 passengers including the driver. Free floor space will accommodate 11 standing passengers resulting in a potential load of 26 persons. At 150 lbs per person, this load results in a measured gross vehicle weight of 14,290 lbs.
Effective January 1, 2010 the Federal Transit Administration determined that the total number of simulated passengers used for loading all test vehicles will be based on the full complement of seats and free-floor space available for standing passengers (150 lbs per passenger). The passenger loading used for dynamic testing will not be reduced in order to comply with Gross Axle Weight Ratings (GAWR’s) or the Gross Vehicle Weight Ratings (GVWR’s) declared by the manufacturer. Cases where the loading exceeds the GAWR and/or the GVWR will be noted accordingly. During the testing program, all test vehicles transported or operated over public roadways will be loaded to comply with the GAWR and GVWR specified by the manufacturer.
The performance of the bus is illustrated by a speed vs. time plot. Acceleration and gradeability test data are provided in Section 4, Performance. The average time to obtain 50 mph was 15.28 seconds. The Stopping Distance phase of the Brake Test was completed with the following results; for the Uniform High Friction Test average stopping distances were 27.15’ at 20 mph, 58.13’ at 30 mph, 96.52’ at 40 mph and 120.87’ at 45 mph. The average stopping distance for the Uniform Low Friction Test was 28.85’. There was no deviation from the test lane during the performance of the Stopping Distance phase. During the Stability phase of Brake Testing the test bus experienced no deviation from the test lane but did experience pull to the left during both approaches to the Split Friction Road surface. The Parking Brake phase was completed with the test bus maintaining the parked position for the full five minute period with no slip or roll observed in both the uphill and downhill positions.
The Shakedown Test produced a maximum final loaded deflection of 0.213 inches with a permanent set ranging between -0.004 to 0.003 inches under a distributed static load of 8,250 lbs. The Distortion Test was completed with all subsystems, doors and escape mechanisms operating properly. Water leakage was observed during the propane fill nozzle and at the bottom of the 3rd window, left side.
A Fuel Economy Test was run on simulated central business district, arterial, and commuter courses. The results were 4.45 mpg, 3.79 mpg, and 5.93 mpg respectively; with an overall average of 4.47 mpg.
The Emissions Test was performed. These results are available in Section 8 of this report.