Kenworth Expands Hybrid Offerings, Introduces New T370 Class 7 Hybrid Tractor Targeted at Local Haul Applications
|The T370 hybrid.|
Kenworth Truck Company has introduced a new Kenworth T370 Class 7 diesel-electric hybrid tractor for local haul applications, including beverage, general freight, and grocery distribution. Kenworth, a division of PACCAR, already offers a T270 Class 6 hybrid-electric truck. Peterbilt, also part of PACCAR, also offers its version of the T270, the Model 335.(Earlier post.)
Both the T270 and T370 share the same hybrid drive system, developed by Eaton. The Kenworth T370 tractor is powered by the PACCAR 6.7-liter PX-6 engine, which is rated at 300 hp (224 kW) at 2,600 rpm, with 620 lb-ft (840 Nm) of torque at 1,600 rpm.
|The Eaton Hybrid Drive Unit. Click to enlarge.|
The medium-duty hybrid system uses a parallel, pre-transmission design with Eaton’s Fuller UltraShift automated transmission. Primary components are the Hybrid Drive Unit (HDU), which combines a clutch, a 44 kW/420 Nm motor/generator and automatically controlled manual transmission; the motor inverter/controller; the DC/DC converter; and a 340V, 2 kWh Li-ion battery pack. (Earlier post.)
Kenworth’s goal for the T370 hybrid tractor is to improve fuel economy by up to 25% in local haul applications. The tractor will be available in various wheelbases, starting as short as 153 inches. The new Kenworth hybrid tractor will be a featured participant during the 16 October 16 Ride and Drive event at the upcoming Hybrid Truck Users Forum (HTUF), to be held this year in South Bend, Ind.
Advanced powertrain controls monitor driving conditions and automatically select the ideal power mode, switching among electric-only, blended diesel and electric, and diesel-only power modes. Electricity generated through regenerative braking is stored and used for acceleration, assisting the diesel engine. The hybrid system is monitored through a dash display. As the power requirements for different driving conditions change, the screen constantly updates the driver on system status.
In 2007, PACCAR and Eaton Corporation entered into an agreement to develop jointly proprietary hybrid technology for heavy-duty commercial vehicles in North America. The new products will be introduced exclusively in Kenworth and Peterbilt trucks in the North American market, targeted for initial production by the end of 2009. (Earlier post.)