24 HYBRID ENGINES
The ‘Cross-Charger’ is a hybrid turbocharger with which fuel consumption and gas emissions of combustion engines can be reduced.
Rolls Royce acquires technology for the electrically-assisted charging of MTU engines
Rolls-Royce has acquired from G+L innotec the exclusive rights of use for a new technology for the electrically-assisted charging of off-highway combustion engines in the power range above 450 kW. The new invention from the development and engineering services provider based in Laupheim in southern Germany is protected by patents and has thus not been available on the market to date, reports WIP.
technology - designed for the electrically-assisted charging of off-highway combustion engines in the power range above 450 kWas - as of 2021. “Electrically-assisted
R
charging is a milestone on the way to the hybridising of the engine. Using this technology, it will be possible for us to develop agile, low-consump- tion engines,” said Dr. Johannes Kech, Director of Development Turbocharging & Fluid Systems at MTU.
MTU and G+L innotec will complete the next stages of de- velopment on the basis of a close partnership. On the basis of a development collaboration
olls-Royce plans to offer engines of its MTU brand with this key
“Electrically-
assisted charging is a milestone on the way to the
hybridising of the engine.” - Dr. Johannes Kech, Director of Development Systems at MTU
agreement with G+L innotec, MTU has equipped its turbochargers with this electric drive and has carried out component tests to determine its possible potential. In the next stage, the two
partner companies will prepare the new products for series production. This mean that, as of 2021, MTU will be able to launch engines equipped with this technology on the market. The first area of application suitable for these engines
Worldwide Independent Power November 2017
include ships and emergency backup gensets. The electrically-assisted
charging system comprises an electric drive combined with a traditional turbocharger developed and manufactured by MTU. As a result, the turbocharger can be acceler- ated electrically and the charge pressure built up earlier. In operating conditions, in
which the energy required for a faster charge pressure of the turbine would normally not be sufficient, it is also possible to build up with the aid of the electric drive. Using the technology developed by G+L innotec, MTU will be able to increase the acceleration capability of marine engines, for example, and also the load response capabilities of generator drives significantly. In addition it will
also be possible to reduce the engine’s fuel consumption and emissions in a variety of different applications. Due to the increased load response capability, emergency standby gensets will be able to deliver their full output even faster than was previously the case. According to the manufacturer, this technology is ideally suited to diesel and gas engines. To provide the turbocharger with electrical assistance, a perma- nent magnet is installed upstream of the compressor wheel and the electrical winding is integrated into the casing of the compressor. With this arrangement, the air drawn in by the compressor is not obstructed and at the same time the electrical components are cooled by the air.
www.rolls-royce.com www.gmp.uk.com
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