Peterbilt, Eaton and Wal-Mart Partner on HEV-aerodynamic truck development.

Discussion in 'Commerical Transportation' started by xcel, Mar 24, 2007.

  1. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Walmart anticipates that the hybrid trucks will help move them toward increasing their fleet efficiency by 25 percent over the next few years.

    [xfloat=left][/xfloat]Peterbilt - Mar. 15, 2007

    DENTON, Texas– Advanced hybrid technologies developed jointly by Peterbilt Motors Company and Eaton Corporation have been integrated into an aerodynamically styled heavy-duty vehicle for superior fuel efficiency and greater environmental stewardship.

    Wal-Mart Stores, Inc., which operates the nation’s second largest private fleet, is supporting development of new hybrid technologies by helping to validate the concept and refine the final design. Wal-Mart recently announced its “Sustainability 360” program that will aggressively promote environmental stewardship among customers, suppliers and associates through a number of global innovation projects.

    Peterbilt and Eaton have previously partnered to develop hybrid electric Class 6-7 vehicle platforms and Class 8 hybrid hydraulic vehicles. With a successful test and evaluation program, the heavy-duty hybrid electric power system will be available in 2009.

    “We are pleased to partner with Peterbilt to produce a heavy-duty hybrid truck that we believe delivers a strong value proposition,” says Jim Sweetnam, Eaton Senior Vice President and President - Truck Group. “During the past five years, we’ve clearly demonstrated our leadership in the hybrid marketplace with the success of our patented hybrid power system in the medium-duty marketplace. We’re excited that Wal-Mart’s fleet is now seeing the value of our hybrid technology.”

    “Peterbilt and PACCAR Inc are leaders in developing solutions that help customers improve fuel economy through superior aerodynamic designs and advanced technologies. We continue to design products, improve processes and develop technologies that are environmentally responsible,” says Bill Jackson, Peterbilt General Manager and PACCAR Vice President. “As we refine our heavy-duty hybrid platform for future production, we are fortunate to have Eaton and Wal-Mart as partners to help develop the best possible vehicle system for both customers and the environment.”

    “Wal-Mart is careful to consider the civic and environmental impact its operations have in the communities it serves around the world,” says Tim Yatsko, Senior Vice President of Transportation. “We are continually looking for new, innovative ways to improve the fuel economy and reduce the emissions of our fleet. We currently operate the Peterbilt Model 386, and we anticipate that the hybrid version will help us move toward our goal to increase our fleet efficiency by 25 percent over the next few years.”

    During third-party testing, the Eaton Hybrid Power System has routinely achieved a 5-7 percent fuel savings versus comparable, non-hybrid models. It may result in a savings of one gallon of fuel per hour when idling.

    At the current average diesel price of almost $2.50 per gallon, those savings equate to about $9,000 to $10,000 a truck per year in operation.

    Advanced Hybrid Technologies
    The heavy-duty hybrid electric power system features an automated manual transmission with a parallel-type “direct” hybrid system, incorporating an electric motor/generator located between the output of an automated clutch and the input to Eaton’s Fuller® UltraShift® transmission. The system captures energy generated by the diesel engine and recovers energy normally lost during braking and stores the energy in batteries. That electric torque is then sent through the motor/generator and blended with engine torque to improve vehicle performance, operate the engine in a more fuel-efficient range for a given speed and/or operate only with electric power in certain situations.

    In this heavy-duty application of Eaton’s hybrid power technology, fuel efficiency and emissions reductions are best achieved both while the truck is rolling or standing still. The system’s batteries power the heating, air conditioning and vehicle electrical systems while the engine is off. When the idle reduction mode is active, engine operation is limited to battery charging, an automatically controlled process that takes approximately five minutes per hour to fully charge the system. In the proposed system design, a proprietary feature minimizes engine vibration during start-up and shutdown during the recharge periods, allowing the driver to rest without interruption.

    About Peterbilt Motors Company:
    Peterbilt Motors Company, a division of PACCAR Inc (Nasdaq: PCAR), manufactures premium quality trucks for a wide range of markets, including over-the-road, construction, municipal and medium-duty. Based in Denton, Texas, Peterbilt combines classic styling, innovative design and superior-quality features in a custom-engineered truck that stands as the "Class" of the industry. Through its 200-plus North American dealer locations, Peterbilt also provides a comprehensive array of TruckCare® aftermarket support programs, including preventive maintenance plans, expedited QuickCare services, automated parts inventory replenishment and 24/7 complimentary Customer Assistance through 1-800-4-PETERBILT. For more information about Peterbilt, visit

    About Eaton Corporation:
    Eaton Corporation (NYSE: ETN) is a diversified industrial manufacturer with 2006 sales of $12.4 billion. Eaton is a global leader in electrical systems and components for power quality, distribution and control; fluid power systems and services for industrial, mobile and aircraft equipment; intelligent truck drivetrain systems for safety and fuel economy; and automotive engine air management systems, powertrain solutions and specialty controls for performance, fuel economy and safety. Eaton has 60,000 employees and sells products to customers in more than 125 countries. For more information, visit

    About Wal-Mart Stores, Inc. (NYSE: WMT) :
    Wal-Mart Stores, Inc. operates Wal-Mart discount stores, Supercenters, Neighborhood Markets and Sam’s Club locations in the United States. The Company operates in Argentina, Brazil, Canada, China, Costa Rica, El Salvador, Guatemala, Honduras, Japan, Mexico, Nicaragua, Puerto Rico and the United Kingdom. The Company’s securities are listed on the New York Stock Exchange under the symbol WMT.
  2. BailOut

    BailOut My favorite holiday is Earth Day!

    Is that a picture of the vehicle itself? If so then Peterbilt has a very different view of "aerodynamic styling" than the rest of the world does...
  3. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi BailOut:

    ___It is indeed. Remember that aerodynamics are tough to picture without the test data. Consider the LS430 (0.25 w/ air suspension and 0.26 w/out). It looks like a brick but has the Cd of the Insight.


    ___Sorry about the pic as it was about the best I could find on such short notice. Find any LS430 review to see the car in full sized on your monitor and you will also say “How did they do it” ???

    ___When I think of an aerodynamic OTR hauler, I think Volvo but hopefully Peterbilt and Kenworth have finally got it in their heads that those huge flat walls for grilles they used to use are dinosaurs from an era long past and hopefully forgotten … Drivers hauling chemicals to the nuclear plants are happy to receive 5.5 - 6.7 in their rigs while hauling tanker trailers that are somewhat aerodynamic on their own. If a truck like the one pictured can achieve 7.5 - 8 hauling the infamous 53’ Walmart cargo trailers in less then 5 years, I think it is a very good thing. We did a News item about 9 months ago on the OTR FE advances. Walmart was actually shooting for an 11 mpg OTR tractor/trailer combo and that is only a start.

    ___Good Luck

  4. brick

    brick Answers to "that guy."

    I think they can get the other three MPG by making adjustments to the trailer, itself. Most of the aero drag on a truck at highway speed comes from the vast area of low pressure that forms at the back of the trailer. There are some pretty good SAE papers that deal with ways to get around this, including a full fairing or even a set of deployable baffles that set up stationary vortices to make the air stream act as if there were a full fairing. That kind of stuff ought to be cheap to do and very much worth the effort.
  5. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Tim:

    ___Indeed. The trailer aero slats/wind skirts, single tire vs. the dualies, Aero tractor, Tag Axle, and APU’s are supposed to be the end all of trailer aero modifications and increased FE from the rigs as a whole. I saw a Con-Way tagged trailer heading southbound on I-294 last year with the whole package and wanted to know if it really helped them from my perspective. I kept inching close and closer and closer and I’ll be if I was within 3 car lengths before the iFCD even showed a worthwhile improvement! The add-ons work as advertised yet I see so few (none) tractor trailer rigs with them installed. The rear cone shaped treatment/boat tail add-ons are also supposed to help but I have not seen one of those on a trailer here in the Chicago area yet.

    ___See the 2 links in the final post of this thread as to what Wal-Mart is looking at:

    WalMart Converting to Hybrid 18-wheelers.

    Walmart – Advanced trucking fleets.

    Deconstructing Wal-Mart's Wonder Truck.

    ___13 mpg from the tractor/trailer rigs by 2015 is an eye opener indeed!

    ___Good Luck


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