27
CONSTRUCTION EUROPE
OCTOBER 2013
EXCAVATORS
Having dissolved its joint venture
with CNH last year, Kobelcoc can now
sell its excavators
anywhere in the
world
machines also feature simpler hydraulic routes
that are more direct, straighter and shorter.”
Components suppliers to the industry are
starting to offer off-the-shelf packages that
include similar fuel-saving hydraulic elements.
Bosch Rexroth’s new Virtual Bleed Off (VBO)
system for example, is designed to provide
just the right amount of hydraulic flow to a
hydraulic circuit. Not only does this save fuel,
but the company said it also makes for more
comfortable operation and faster response.
Doosan has already
adopted VBO for its
DX340LC-3
and
DX380LC-3
Stage
IIIB compliant crawler
excavators, where it is
branded as D-Ecopower
technology.
A 26% improvement in productivity
and up to 12% in fuel savings is being
claimed for the electronic pressure-
controlled pump and closed centre hydraulic
system, depending on the mode selected.
Fuel consumption was also a key focus for
Doosan when it developed the new Stage
IIIB-compliant, 15.3 tonne compact radius
DX140LCR-3, which is said to deliver 11%
more power compared to the previous Stage
IIIA compliant DX140LCR. It is also said to
deliver up to a 5% increase in the productivity
(m
3
/hour) to fuel consumption (litres/hour)
ratio, depending on the operating mode
Hybrid delivery
Caterpillar’s UK dealer Finning has delivered
the first 336EH hybrid excavator in the UK
to quarrying specialists William Thompson
& Son.
The new 36 tonne machine will be put
to work in the contractor’s main quarry,
where it is expected to save the company
approximately £70,000 (€81,938) on fuel
costs alone across five years.
Caterpillar claims the hybrid machine uses
up to 25% less fuel compared to a standard
Cat 336E, and up to 33% less fuel than the Cat
330D or 336D. Factoring in the current high
costs of fuel, Finning believes that customers
that invest in the Cat 336E LH could realistically expect to see a return on their investment
in two years.
Alistair Murdoch from Finning said, “William Thompson & Son was initially taken aback
by the additional £25,000 (€29,263) that it would pay for the machine. However, once we
showed our calculations, the benefits were quickly apparent. The customer is confident
that this hybrid solution will not just save them money, but also improve productivity at
the quarry.”
Caterpillar claims the hybrid machine
uses up to 25% less fuel compared to a
standard Cat 336E
JCB is now fitting its own
Ecomax engine in its 11 to
22 tonne excavators. The
power unit does not require
any exhaust aftertreatment
to achieve current emissions
standards
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