In Gear - Today's Trucking

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Need to Reach Truckers? www.todaystrucking.com www.transportroutier.ca www.highwaystarmagazine.com www.truckandtrailer.ca www.truckworld.ca ...NEWCOM leads the way! NEWCOM Business Media Inc. is Canada’s largest publisher of business information products for the trucking industry.We publish five magazines, maintain five attendant websites and produce the country’s largest truck show (Truck World).Together, our staff of award winning journalists and high quality lists ensure your advertising message reaches the target audience with impact and efficiency. 451 Attwell Drive, Toronto, Ontario M9W 5C4 Tel: 416 614-2200 • Fax: 416 614-8861 www.newcom.ca
Magic Gas? tech tips Nitrogen tire fills are nothing new, but new technology makes it affordable for truck fleets of all sizes. By Jim Park There’s nothing magical about nitrogen’s ability to prolong tire life. It won’t restore the original luster to the innards of your tires, it doesn’t smell better, and neither will it save the environment. But using nitrogen rather than compressed air to inflate tires has two principle advantages. First, its permeation rate is 35 percent slower than air, resulting in tires that stay properly inflated longer, keeping tires running cooler, improving tread life, minimizing sidewall flex, and overall, lowering the rate of pressure-induced blowouts. Second, nitrogen is dry and contains no moisture. Nitrogen is inert so rust cannot form since there is neither oxygen nor moisture present to cause oxidation of the wheel. Remove the oxygen and the moisture PSSST: Nitrogen’s better than air in your tires. from inside your tires and replace it with a gas that stays in place longer, runs cooler, and won’t corrode the inner surfaces of the wheel rim or the tire and you’ve solved many of your tire management issues—all at once. Until recently, there has not been a convenient, reliable, economic means of distributing nitrogen to inflate tires. In the past, nitrogen would be provided in large liquid tankers transferring the nitrogen to large on-site storage vessels, or it was delivered in high-pressure cylinders. But recently, technologies have been developed for on-site use that purifies regular compressed air into high purity nitrogen. In Gear There are two types of nitrogen generating systems: membrane generators and pressure swing adsorber generators (PSA). Both produce 98-to-99-percent pure nitrogen, but the PSA generators are typically rated for less than 90 psi output—a little weak for heavy-duty truck applications, but suitable for light- and medium-duty trucks. The output of membrane generators, however, is equal to the input pressure. The nitrogen generators are rated for certain volumes. Higher volume units are capable of filling over 30 truck tires per hour from 150-psi compressed air systems. There are no storage reservoirs required, as the nitrogen is used as it’s produced. The definitive study on nitrogen-filled truck tires, “Million Mile Truck Tires— Available Today” was conducted in 1986 by Lawrence Sperberg and clearly demonstrates the advantages of using nitrogen for truck tire inflation. Sperberg found in a MARCH 2006 65
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In Gear - Today's Trucking

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