COLUMBUS, Ind.--(BUSINESS WIRE)--Mar. 14, 2013--
Cummins Inc. (NYSE: CMI) and Peterbilt Motors Company, a division of
PACCAR (Nasdaq: PCAR), released test results today showing their
demonstration tractor-trailer achieved a 54 percent increase in fuel
economy, averaging nearly 10 miles per gallon (mpg) under real world
The “SuperTruck” developed by the two companies features a
higher-efficiency engine and an aerodynamic tractor-trailer that
significantly reduces drag. The truck also includes a system that
converts exhaust heat into power delivered to the crankshaft, electronic
controls that use route information to optimize fuel use, tires with
lower rolling resistance and lighter-weight material throughout.
The Class 8 Peterbilt 587 powered by a Cummins ISX15 engine averaged 9.9
mpg during testing last fall on U.S. Route 287 between Fort Worth and
Vernon, Texas. The testing was conducted over 11 runs meeting SAE
International test standards along a 312-mile route. The tractor-trailer
had a combined gross weight of 65,000 lbs.
Today’s long-haul trucks typically achieve between 5.5 and 6.5 mpg. The
54 percent increase in fuel economy would save about $25,000 annually
based on today’s diesel fuel prices for a long-haul truck traveling
120,000 miles per year. It would also translate into a 35 percent
reduction in annual greenhouse gases per truck.
The potential savings in fuel and greenhouse gases are enormous, with
about 2 million registered tractor-trailers on U.S. roads today,
according to The American Trucking Association.
In addition to the fuel economy improvements, the truck also
demonstrated a 61 percent improvement in freight efficiency during
testing compared to a baseline truck driving the same route. That
significantly exceeded the 50 percent SuperTruck program goal set by the
U.S. Department of Energy. Freight efficiency is an important metric in
the transportation industry that is based on payload weight and fuel
efficiency expressed in ton-miles per gallon.
“Many of the technologies we are testing on the engine and truck will be
integral parts of the trucks of tomorrow,” said David Koeberlein,
Principal Investigator for the SuperTruck program at Cummins. “We are
focused on developing innovations that meet and exceed the needs of our
customers, while helping to create a cleaner, healthier and safer
Cummins personnel have been focused on the engine and its integration
with the powertrain. They have been working with several other companies
and research institutions to develop numerous changes in the combustion
system as well as advances to reduce internal friction and so-called
“parasitic power” – excess power the engine needs to run such things as
lube and coolant pumps and air compressors.
In addition to the truck’s exterior, Peterbilt and its partners have
been working on improvements in the drivetrain, the idle management
system, weight reduction and vehicle climate control. Eaton's advanced
transmission facilitates further engine downspeeding for additional fuel
“Aerodynamics has been a significant contributor to the efficiency
gains,” said Scott Newhouse, Senior Assistant Chief Engineer of Product
Development at Peterbilt. “We are very pleased with what our team has
been able to accomplish using a comprehensive tractor-trailer approach.”
Cummins is a prime contractor leading one of four vertical teams under
the Department of Energy’s SuperTruck project. SuperTruck is one of
several initiatives under the 21st Century Truck Partnership, which is a
public-private partnership founded to further stimulate innovation in
the trucking industry through the sponsoring government agencies,
companies, national laboratories and universities.
Cummins, Peterbilt and their program partners will have invested $38.8
million in private funds over the four-year life of their SuperTruck
program, which started in 2010, with critical support coming through
awarded matching grants from the Department of Energy’s Vehicle
Testing will continue in 2013 on a new Peterbilt 579 that Cummins and
Peterbilt are confident will take what has been achieved so far to even
higher levels. The testing will address use of the tractor-trailer over
a 24-hour period; including periods when drivers are at rest but still
need power for such things as air conditioning and small appliances.
Cummins Inc., a global power leader, is a corporation of complementary
business units that design, manufacture, distribute and service diesel
and natural gas engines and related technologies, including fuel
systems, controls, air handling, filtration, emission solutions and
electrical power generation systems. Headquartered in Columbus, Indiana,
(USA) Cummins currently employs approximately 44,000 people worldwide
and serves customers in approximately 190 countries and territories
through a network of approximately 600 company-owned and independent
distributor locations and approximately 6,500 dealer locations. Cummins
earned $1.66 billion on sales of $17.3 billion in 2012. Press releases
can be found on the Web at www.cummins.com.
Follow Cummins on Twitter at @Cummins and on YouTube at CumminsInc.
Source: Cummins Inc.
Jon Mills, Director – External Communications,