The new 644K Hybrid wheel loader from John Deere utilizes diesel and electric energy. The hybrid loader captures regenerated energy as it’s being created and uses it to power the machine. The 644K Hybrid is equipped with 6.8-liter Tier 4 Interim engine that runs at an operator-selected constant speed ranging from 900 to 1,800 rpm. The machine’s hybrid technology delivers performance that is equal to or better than the conventional 644K Hybrid depending on the application, John Deere says. In addition, the engine’s constant operating speed maintains continuous hydraulic flow at all times, delivering hydraulic responsiveness and reducing cycle times. The electric motor smoothly delivers torque, resulting in fluid operation and a smoother ride.
Photo: John Deere
