Video: Komatsu 35t hybrid excavator at Civenex

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  • Earthmovers & Exacavators

The HB335 hybrid excavator on display at Komatsu’s stand was one of the highlights of this year’s Civenex infrastructure expo held at Sydney Dragway on May 14 and 15.

See full list of videos from Civenex 2014

As Komatsu National Business Manager ­– Construction Amber Rickard explains in this video, the hybrid system harnesses energy that is usually wasted as heat — such as kinetic energy when you’re braking —and reuses it for better fuel efficiency and a reduction in CO2 emissions.

"When the excavator is slewing and braking that energy is regenerated and stored in the capacitor … it’s used again to drive the swing motor," and also ramp up the engine for hydraulic assistance, Rickard says. "We also have a generator motor that sits between the engine and hydraulic pump. It generates electricity off engine torque and stores that in the capacitor."

Besides being used in the 35-tonne excavator on display, the hybrid system is also installed on Komatsu’s 20-tonne class HB205-1 and HB215LC-1 models. Click here for more details.

 

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