Parker Hannifin Corp. has been developing hybrid drive systems for refuse vehicles, using an advanced hydromechanical series drive system designed to reduce fuel consumption and increase productivity in vehicles with high start-and-stop applications. Now, it is beginning to use that same technology and apply it to on- and off-highway applications.

The hybrid drive system replaces a conventional transmission with the series hybrid that marries the variable features of a hydrostatic drive, ideal for urban routes, with the efficient performance of a mechanical drive that performs best at highway speeds and uses regenerative braking technology.

Refuse vehicles with this technology see a 30-50% fuel savings, Parker says. The system matches the vehicle's load with the power needed at that time, creating the savings.