Kenworth Truck Co. is producing two new models of medium-duty diesel-electric hybrid trucks. The T270 Class 6 and T370 Class 7 hybrids are powered by the PACCAR PX-6 engine and feature an integral transmission-mounted motor/generator, a frame-mounted 340-V battery pack and a dedicated power management system. Advanced powertrain controls monitor driving conditions and automatically select the suitable power mode. Drivers also can switch among electric-only, combined diesel and electric, and diesel-only power modes. Electricity generated through regenerative braking is stored and used for acceleration, assisting the diesel engine. A dash display monitors the hybrid system. As the power requirements for different driving conditions change, the screen constantly updates the driver on system status.
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