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What's New in Plant & Equipment

Bauma always kicks-

off with the issuing of

several awards for

innovation and 2016

was no exception.

Among finalists represent-

ing hydraulics technology

were the STEAM Hybrid

Excavator built by

RWTH

Aachen Universit

y in the re-

search sector, pipe-laying equip-

ment from

Harald Gollwitzer

Spezialtiefbau GmbH

in the construc-

tion process/work category and a

wheeled excavator from

Mecalac

in the design

category.

University and industry groups give engineers the

opportunity to look outside the box when it comes to

engineering design. This freedom to explore new ways

of doing things lays behind all innovations that have

taken place over the years.

For industry, supporting University driven research

and development is a cost effective way to find solutions

for the future - solutions that are then available to all

manufacturers to further enhance products and to fa-

cilitate production..

In the last issue of

Contractors World International

we featured the ‘

Concept Cab

’ - a universal cab for the

future. This time we look at developments in hybrid

technology as manufacturers face ever increasing de-

mands to produce equipment with minimal emissions.

The impetus behind the STEAM excavator, according

to Aachen officials, is that fluctuating fuel prices, more

stringent emissions regulations and increasing environ-

mental awareness is spurring interest in highly efficient

mobile machines, especially in the premium segment.

However, most of today’s machines have a total ef-

ficiency of less than 10%, meaning that only a fraction

of the energy in fuel is actually converted into mechanical

power. Low efficiency is mainly caused by inefficient

operation of the engine and throttling losses across

hydraulic valves.

The Future for

Excavators

Contractors World International Vol 7 No 4

41