Thursday 8 November 2012
AT current fuel prices, Caterpillar is estimating that its new hybrid excavator will pay for itself in just a year.
Called the 336E H (with the H standing for hybrid) the new machine needs up to 25% less fuel than the standard 336D and up to 33% less fuel than the 330/336D.
The hybrid system is made up of an engine, hydraulics and accumulators. Fuel is conserved because the hybrid system captures the excavator’s upper structure swing brake energy in accumulators, and then releases the energy during swing acceleration.
Other energy losses are also reduced by a Cat Adaptive Control System (ACS) valve which manages restrictions and flows as the machine moves with no loss of power.
Caterpillar has filed more than 300 patents on the technology that it has developed for this machine.
The new 336E H will be launched at the Bauma 2013 trade fair in Munich, Germany next April, although orders will be taken from February and shipments start in March 2013.
Owning and operating costs for the 336E H are expected to actually be lower than the standard machine.
Gary Stampanato, the vice president of Caterpillar’s Excavation Division, describes the 336E H as “a game-changer and the most revolutionary excavator to come to market in decades”.
By Dan Tye
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