Caterpillar expands electric-drive functionality

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Caterpillar has announced the launch of two electric-drive heavy-duty mining trucks, adding to the range of vehicles already available from the company.

The 798 AC and 796 AC machines deliver a payload of 372 tonnes (410 tons) and 326 tonnes (360 tons) respectively, with the former vehicle being offered in all markets, while the latter will be made available where engine emissions are less regulated.

The AC powertrain on both models was developed and manufactured in-house, as was the rest of the powertrain.

The Cat AC drive is a high-voltage system (2,600V) that operates at lower current than that offered by the competition. When combined with Cat’s total integration and design of the truck and drive system the result is higher efficiency, lower heat generation, smaller and lighter components, and longer component life.

Proven engine
Both new mining trucks are powered by a Cat C175-16 diesel engine, an engine with more than 21 million hours of proven reliability that can be configured to meet US EPA Tier 4 emissions regulations. A choice of 2,610kW (3,500hp) or 2,312kW (3,100hp) power level is available for the engine.

A Caterpillar spokesperson said, “The 796 AC and 798 AC are built for efficient production. Both truck models are designed to minimize empty machine weight, as configured in the field. The design enables the 798 AC to carry its class-leading payload and to haul more material each cycle on 59/80R63 tires.”

The new trucks feature four-corner, oil-cooled disc brakes as well as dynamic retarding for stable handling and confident stopping. Superior retarding capability, blended braking and the Cat Traction Control System help boost productivity while enhancing safety.

Caterpillar expands electric-drive functionality

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James joined the Industrial Vehicle Technology International team in 2017. Previously he was Assistant Editor on an engineering title for several years and has worked for various other trade magazines before that. James is happily married and has a young daughter who keeps him busy.

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