Airport Business

OCT 2018

The airport professional's source for airport industry news, articles, events, and careers.

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October 2018 airportbusiness 9 LANDSIDE DEVELOPMENT technology as current aging vehicles are in need of replacement. There are several funding opportunities available to help pay for these alternative fuel vehicles. The U.S. Energy Department’s Alternative Fuels Data Center lists state and federal funding opportunities and these vehicles could be eligible for funding from the Volkswagen settlement’s Environmental Mitigation Trust. Depending on your state’s EMT plan to reduce nitrogen oxides (NOx) emissions in accordance with this settlement, funding for Class 4-8 shuttle buses could be included. Propane autogas vehicles all run on nontoxic, colorless and clean-burning propane autogas, which is an approved alternative fuel under the Clean Air Act. In contrast to nontoxic propane, as little as one gallon of spilled gasoline can quickly contaminate groundwater above drinking water health advisory levels. Currently, more than 90 percent of U.S. propane supplies come from domestic production, making propane autogas a readily available alternative to imported oil. Propane autogas is an abundant, American-made fuel. Our country produces more than 21 billion gallons of propane and is using only 9 billion gallons for home heating, cooking and transportation. This leaves a surplus for fleets to use this domestic energy source. Propane autogas vehicles are safe and must meet the same safety standards as gasoline- and diesel-fueled vehicles. Now that you know more about the fuel itself, here are three steps to convert your fleet vehicles to propane autogas. Step 1: Understand how propane autogas vehicles can benefit your fleet Propane autogas, the internationally recognized term used for propane when used in on-road engines, has both economic and environmental benefits. Compared with conventional fuels, propane autogas costs less per gallon. On average, propane autogas is about 40 percent less than gasoline and 50 percent less than diesel. In addition to fuel savings, fleet operators have experienced lower costs for oil changes and routine maintenance due to the fuel’s clean-burning properties. Engines powered by propane autogas require less oil per oil change than diesel (7 quarts vs. 17 – 30 quarts) and no additional diesel emissions fluids or hardware. Propane autogas vehicles eliminate the need for particulate trap systems, EGR systems, and turbochargers and intercoolers. Filter packages cost about 60 percent less on propane autogas vehicles than diesel vehicles. With modern propane autogas systems, the propane remains in a liquid state until it gets to the cylinder. This has alleviated cold start issues associated with vapor technology propane systems of the past. A propane autogas fuel system provides unaided cold weather starts to -40 degrees Fahrenheit, reducing time and labor costs needed on those frigid days. Propane autogas has the added environmental benefit of reducing emissions. Vehicles fueled by propane autogas emit up to 18 percent fewer greenhouse gases with 20 percent less nitrogen oxide, 60 percent less carbon monoxide and fewer particulate emissions than models fueled by gasoline. When compared to conventional diesel, fueling with propane autogas results in an estimated 80 percent reduction in smog-forming hydrocarbon emissions and virtually eliminates particulate matter. Propane autogas is also naturally lower in nitrogen oxides (NOx) than diesel and gasoline. For example, if you replace one gasoline-fueled Ford E-450 chassis with a propane autogas model, more than 91,000 pounds of carbon dioxide will be eliminated over its lifetime. Colonial Airport Parking’s current propane fleet will emit 730,000 fewer pounds of carbon dioxide over its lifetime. Plus, the Philadelphia International Airport-based company has cut fuel costs by 32 percent and bus maintenance costs by 28.4 percent since adopting propane autogas shuttles. All engines of any fuel type must be certified to the Environmental Protection Agency’s standard. Look for propane engines that go beyond that certification. For instance, one market propane engine is certified to the optional low NOx level 0.05 grams per brake horsepower per hour, making it 75 percent cleaner than the EPA’s current standard. A savings calculator allows users to input specific information about vehicles owned and miles traveled to calculate potential emissions and cost reductions over the life of the vehicles. Colonial Airport Parking runs around the clock, transporting travelers to and from Philadelphia International Airport. Roush CleanTech

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