CHICAGO, Illinois (May 6, 2008) – Peterbilt Motors Company displayed its Model 320 Hydraulic Launch Assist (HLA) at the 2008 Waste Expo in Chicago, Illinois.  The vehicle, ideally suited for vocational stop-and-go refuse applications, has the potential to dramatically improve fuel economy, reduce emissions, and reduce maintenance service.

The hybrid Model 320 on display in the Peterbilt booth utilizes HLA technology developed by Eaton Corporation exclusively for PACCAR by capturing the trucks kinetic energy during braking to assist in launching and accelerating the vehicle.  Testing has proven a significant improvement in fuel economy, and indicated the potential to reduce annual brake re-alignment services by 50 percent annually.  

“The Model 320 HLA is an ideal environmental option for refuse applications,” says Bill Jackson, Peterbilt General Manager and PACCAR Vice President.  “Dramatic improvements in fuel economy, reductions in emissions and lower maintenance costs spotlight the Peterbilt Model 320 Hydraulic Hybrid as the environmentally responsible, fuel-efficient solution for municipal and residential solid waste transportation fleets.”

Hydraulic Launch Assist technology works by recovering up to 75 percent of the energy normally lost as heat by the vehicle’s brakes in the form of pressurized hydraulic fluid.  This fluid is stored in an on-board accumulator until the driver next accelerates the vehicle.

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 240-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 http://www.peterbilt.com.