LOAD & HAUL
becoming Stage V-compliant, the changes have improved fuel economy by a claimed 10%.
Te largest change to the machine is
a new engine – the old 192kW (258hp) MTU unit has been replaced by a Cummins model that offers a dual power option, so 210kW (282hp) is available for heavy duty work with a switch in the cab to reduce this to 167kW (224hp) for lighter duties. Te aftertreatment is housed in a single module, featuring a diesel oxidation catalyst, selective catalytic reduction (SCR), a diesel particulate filter (DPF) and an ammonia slip catalyst (ASC). Tere’s also a new auto engine shut-down feature which the operator can fine tune.
Te old four-speed box has been
replaced with a five-speed Powershift transmission designed to offer better spacing for the ratios. Other enhancements include better
mudguards, a new engine canopy and better seating.
PRACTICE MAKES PERFECT Anything that can accelerate training is good. CM Labs Simulations has expanded its training capability with a new exercise designed around earth moving equipment. It allows an excavator operator to work while a colleague learns how to operate the truck, interact with the excavator, and drive on various types of terrain. CM’s Julien Richer-Lanciault says,
“We believe this crew training capability is unique to the industry, in that it is the only training solution that simulates critical machine reactions, such as the precise motion of the truck when dirt hits the trailer or when it is struck by the bucket. Tis allows operators to develop the sense of feel that is so critical to efficient operations.”
In addition to those two tasks, another
operative can simultaneously offer guidance from CM Labs’ Signalperson Training Station while a fourth can work from an Instructor Operating Station. Te simulation then merges the various parameters to give a score for the team. Te company also offers a similar package for training mobile and crawler crane drivers. So, as Stage V comes into force across Europe, the efficiency drive continues. In other news from this sector, Volvo’s latest EC300E Hybrid crawler excavator uses energy generated by the downward motion of the boom to charge 20 litre hydraulic accumulators that feed into hydraulic assist motors that help power
MTU series 4000 engine for mining
the hydraulic pump. Te company reckons the fuel saving payback can be in two years when used in high production dig and dump applications – especially those within a 90° swing, with up to 15% lower fuel consumption and 12% less CO₂ emissions than a conventional machine. Finally, Hitachi’s latest offering is the 35 tonne ZX345USLC-6. It’s the largest in the firm’s reduced-tail-swing excavator line. It uses a three pump system designed to improve economy. Two pumps operate under normal loads and the third lends a hand when required providing additional hydraulic oil to the swing circuit without robbing oil or speed from other functions.
Inside Volvo’s EC300E hybrid
CM Labs has expanded its crew training simulation capabilities
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