The fleet of refuse trucks equipped with Parker’s RunWise® Advanced Series Hybrid Drive System is approaching one million miles of operation, and continues to achieve positive results as the system gains momentum in the market.
How does it work?
The RunWise® hybrid drive system is built around the company’s proprietary Power Drive Unit (PDU), C24 Variable Displacement Bent-Axis Hydraulic Pumps, Hydraulic Motors, and Composite Bladder Accumulators – all designed specifically for high power, high start-and-stop applications. An onboard controller coordinates pumps, hydrostatic motors and accumulators to power the vehicle when in hydrostatic mode during start-and-stop operation while collecting refuse. Instead of solely using power from the engine, accumulated energy from the vehicle’s braking system is stored and used to power the truck each time it accelerates. As the truck reaches highway speed, the PDU transfers from hydrostatic drive to mechanical drive to maximize operational efficiency.
Covering the earth multiple times
The Autocar E3 refuse trucks equipped with the RunWise system have covered enough ground throughout 75,000 hours of operation to circle the earth over 28 times. Vehicle owners continue to report 99 percent uptime and fuel savings averaging 43 percent, reinforcing the performance and reliability of the RunWise system.
“As the fleet reaches this impressive milestone, we are very pleased with the progress we have made and excited for the future of hydraulic hybrid vehicles. The strong performance of the Parker system continues to draw inquiries and orders from numerous municipalities and fleet operators, and we will further extend the technology to new platforms and fuel types in the medium and heavy duty segment.”
via Shane Terblanche, General Manager, Hybrid Drive Systems Division.
Trucks consistently provide significant reduction in fuel consumption and emissions
As the trucks accumulate miles in operation and consistently provide significant reductions in fuel consumption and emissions, Parker’s Hybrid Drive Systems Division has added new customers and received follow-on orders from several fleets already using the system.
The City of Orlando, Florida placed an order to test several trucks equipped with RunWise, and have placed follow on orders for more vehicles, and the City of New Braunfels, Texas recently submitted a second order as they aim to increase the efficiency of their waste collection fleet.
Miami-Dade County in south Florida has been operating Autocar E3 refuse trucks equipped Parker's RunWise technology for several years, and placed a significant follow-on order for more vehicles, which were delivered and placed in service in September 2013.
Operators have positive driving experiences
The system also continues to elicit positive testimonials from operators of trucks equipped with RunWise hydraulic hybrid technology, detailing their positive driving experiences and increased route productivity.
“The hybrid truck shifts very smooth, especially compared to a conventional transmission. The drive is quick and responsive, without the roughness or noise of a standard truck, so both our drivers and the customers we collect for appreciate the impact RunWise makes.”
via commented Jonathan Fletcher, a refuse truck operator with Advanced Disposal.
Additional related articles: