The American Transportation Research Institute (ATRI) has released the results of a demonstration project involving four mobile idle reduction systems.
Research was sponsored by the US Environmental Protection Agency to collect and quantify actual operational data for trucks using selected idle reduction technologies. Idle reduction technologies tested by the participating fleets included auxiliary power units, battery-powered air-conditioning systems, and thermal storage air-conditioning systems.
With deployment of the selected idle reduction technologies, main engine idling comprised from 5% to 22% of total engine operating time, representing a reduction in idling of 42% to 78% from baseline conditions. Reductions in the emissions of oxides of nitrogen, particulate matter, and carbon dioxide were also identified. Payback periods were generally longer than anticipated.
In addition to operational data, carriers also provided recommendations for integrating commercially available idle reduction systems into the truck manufacturing process. Several features were identified as potential areas of improvement, including cab insulation, air flow, connection and components, engine coordination, and system management.
“This research captures some of the real-world challenges motor carriers face when deploying idle reduction technologies. It highlights the benefits provided by the various systems yet identifies many of the uncertainties or areas where improvements could be made,” said Frank Molodecki, vice-president of safety and revenue equipment for Diversified Transfer and Storage, one of the participating fleets.
A summary of the findings is available on ATRI’s website at www.atri-online.org. A copy of the full report can also be ordered from ATRI through its website.
