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NITROGEN TIRE PRESSURE MAINTENANCE PROGRAM FOR GOVERNMENT FLEET EXPO. Why Use Nitrogen?. The Problem is Under Inflation. 40% of passenger cars and 45% of trucks/suv/vans have at least one tire that is under inflated by 6% (National Highway Transportation Safety Commission) - PowerPoint PPT Presentation
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NITROGEN TIRE PRESSUREMAINTENANCE PROGRAM
FOR GOVERNMENT FLEET EXPO
Why Use Nitrogen?Why Use Nitrogen?
40% of passenger cars and 45% of trucks/suv/vans have at least one tire that is under inflated by 6% (National Highway Transportation Safety Commission)
As many as 85% of motorists do not check their tire pressure properly. (Rubber Manufacturers Association, February 2003 Survey)
The Problem is Under InflationThe Problem is Under Inflation
Why Use Nitrogen?Why Use Nitrogen?
US can save 4 MM gal/day of gas by properly inflating US can save 4 MM gal/day of gas by properly inflating tirestires- US Department of Energy- US Department of Energy
Improve gas mileage by around 3.3 percent by keeping Improve gas mileage by around 3.3 percent by keeping tires inflated to the proper pressuretires inflated to the proper pressure- DOE & EPA website- DOE & EPA website
Fuel efficiency reduced by ~1% for every 3 psi of under Fuel efficiency reduced by ~1% for every 3 psi of under inflationinflation- NHTSA- NHTSA
About 90% of tire failures causing tire road debris is About 90% of tire failures causing tire road debris is caused by underinflation caused by underinflation - TMC Tire Air Pressure Study, May 2002- TMC Tire Air Pressure Study, May 2002
Under Inflation Causes Energy & Safety IssuesUnder Inflation Causes Energy & Safety Issues
Fact : NFact : N22 Permeates Slower Permeates SlowerRetains Tire Pressure LongerRetains Tire Pressure Longer
Oxygen leakage rate is 4 times that of Nitrogen
N2 Permeability (cm3 STP-cm/(cm2-sec-cm Hg)): 0.32E-10
O2 Permeability (cm3 STP-cm/(cm2-sec-cm Hg)): 1.3E-10
TireInside
Nitrogen Molecules
Oxygen Molecules
Tire Rubber WallTireOutside
What Can Nitrogen Do For Your Fleet?What Can Nitrogen Do For Your Fleet?
Improves fuel efficiency by 2 - 6%Improves fuel efficiency by 2 - 6%
Lowers Carbon emissions 20 lbs/gal. of fuelLowers Carbon emissions 20 lbs/gal. of fuel
Lowers annual tire expense by 20%Lowers annual tire expense by 20%
Improves fleet safetyImproves fleet safety
Low investment / High returnLow investment / High return
Nitrogen & Federal Block Nitrogen & Federal Block GrantGrant
Energy Efficiency & Energy Efficiency & Cleaner Cleaner EnvironmentEnvironment
Reduce Fuel ConsumptionReduce Fuel Consumption Reduce Smog EmissionsReduce Smog Emissions Reduce Greenhouse GasesReduce Greenhouse Gases Reduce pressure on our Reduce pressure on our
landfillslandfills
Annual Benefits based on 3 months of actual field data
Fuel Savings 75,600 gal $ 302,400
Tire Savings 50 tires $ 20,800
CO2 Reduction 1,512,000 lbs ???
Fleet : 285 buses
Mileage25,000
miles/year
Fuel cost @ $4.00/gal
2.5% savings
Tire life3 years
10% less wear
Tires $..../mile
(not shared)
CO2 Reductio
n22 lbs/gal
Gas Savings: http://www.fueleconomy.gov/feg/maintain.shtmlTire life: http://www.bridgestonetrucktires.com/us_eng/real/magazines/03v8iss3/ra8.aspCO2 Reduction: http://www.epa.gov/otaq/consumer/f00013.htm
Projected EconomicsProjected EconomicsNYC Transit – “Flatbush Depot”NYC Transit – “Flatbush Depot”
PurigeN98 System PurigeN98 System OperationOperation Converting from Air Converting from Air
to Nitrogento Nitrogen
PurigeN98 Generator Tire Machines
Nitrogen Supply Header Nitrogen Hose / Bay
Advantage: PurigeN98 service available in all bays & tire machines
Whole Shop InstallationWhole Shop InstallationMultiple Bays & Tire MachinesMultiple Bays & Tire Machines
THANK YOU!
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