26 February 2017, Nashville
Variable engine-driven accessories are emerging as fuel-saving strategies for long- and regional-haul fleets, according to the latest Confidence Report released today by the North American Council for Freight Efficiency (NACFE) and Carbon War Room.
Engine-driven accessories use about 3–5% of the overall fuel consumed by Class 8 tractor-trailers. The fuel economy gains that can be achieved with variable engine-driven accessories for common on-highway vehicles are relatively modest. Current fuel prices make justifying the added cost for variable engine-driven accessories hardware that improves fuel economy difficult, and the added complexity of these systems creates concerns about their reliability.
The report provides details on 2-speed/modulating cooling fans, variable speed water pumps, clutched air compressors, high-efficiency alternators, smart air dryers, dual displacement power steering pumps, electrically driven A/C compressors, and electrically driven accessories. It also explores some of the challenges presented by these technologies.
This is the second time Trucking Efficiency has released a Confidence Report on an emerging technology. The report is an effort to provide a foundational understanding of variable engine-driven accessories because current and upcoming greenhouse gas regulations are likely to push at least some of the technology choices related to engine-driven accessories from optional to standard equipment on new truck orders.
About Confidence Reports
This report is part of our Confidence Report series, intended to help end users and manufacturers determine whether to adopt a specific technology or set of solutions. The series also includes tire pressure systems, 6x2 axle configurations, idle reduction technology, electronically controlled transmissions, programmable engine parameters, low rolling resistance tires, lightweighting, downspeeding, tractor aerodynamics, trailer aerodynamics, lubricants, and two-truck platooning. Promising technologies for additional Confidence Reports are currently being identified.
Trucking Efficiency created an interactive information platform at www.truckingefficiency.org to help users make more confident adoption decisions by providing detailed information on efficiency technologies, including data from across a variety of fleets and best practices for adoption.
For more information or to become a sponsor, contact Mike Roeth at email@example.com.