U.K.Project Proves Concept The company developed the technology in a project with vehicle and engine manufacturer Scania UK. "They were responding to their customers in the U.K. that had an interest in low-emission natural gas trucks, but didn’t want to spend the high premium to purchase a new NGV," Gettel says. "To service this market Scania came up with an approach to supply re-engineered natural gas heavy-duty trucks based on three- or four-year-old diesel trucks coming in off lease."
IMPCO converted 200 of the trucks for Safeway, which operates them 450 to 600 miles a day hauling produce to grocery stores. Safeway’s testing indicates NOx emissions of around one gram per brake horsepower hour, meeting the stiff Euro V standard. The low emissions enabled Safeway to get a government grant covering 75 percent of the trucks’ differential cost. That combined with fuel cost savings of more than 40 percent allowed the fleet operator to recover the entire differential in less than one year. Safeway continues to operate the trucks, which typically travel more than 100,000 miles per year.