Page 41 - ATZ11 November 2019 Professional

© Fraunhofer IWM

Fraunhofer IWM | Lightweight Composite

Materials for Injection-molded Components

Polyethylene (PE) is potentially an ideal material for lightweight structures. manufacturer LyondellBasell, have now produced and validated a robust com-
It is energy-efficient, can be produced from renewable raw materials, and posite made entirely of PE. The special feature of this new material is that the
can be recycled leaving hardly any residues. However, only PE components that reinforcing fiber structures are also made of PE and can be formed during the
are reinforced with carbon or glass fiber, for example, to produce composite injection molding process. The next stage of the project involves processing
materials are genuinely mechanically resilient. Researchers at the Fraunhofer the material using a 3-D printer. Previously, the positive properties of all-PE
Institute for Mechanics of Materials (IWM), MicroTribology Centrum μTC, in composites could only be achieved if the polymers were oriented when they
cooperation with the Freiburg Materials Research Center and the polyolefin were injected into a narrow mold.

© Vacuumschmelze © TDK © Volvo

Vacuumschmelze | TDK | Volvo |
Compact Filter Chokes New Range of Mild Hybrid Gasoline

for 48-V Systems Power Inductors Engine System

New electrical components such as inverters TDK has added to its line-up of metal core For the first time, Volvo is equipping its gaso-
and DC/DC converters are needed to ensure power inductors: The new SPM-VT series is line engine models with a 48-V mild hybrid
that the hybridization process can be both designed especially for the high thermal system. The Swedish company is launching
fast and cost-effective. One of the main requirements and high current levels of its new program with two electrified versions
challenges facing the designers of inverters automotive LED headlights. These wire- of the XC90. Other models and engine vari-
is the very limited space available. The highly wound power inductors feature both ants will follow. The less powerful system,
compact filter chokes developed by Vacuum- a broad operating temperature range from which is known as the B5 and produces maxi-
schmelze are the ideal solution to this prob- -55 to +155 °C and high rated currents from mum power of 184 kW, will be available in
lem. The chokes have powder pot cores and a 4.7 to 36.6 A, depending on their type. The November 2019. This will be followed in Feb-
very low leakage inductance, which results in new components comply with AEC-Q200 and ruary 2020 by the B6 with 228 kW. The hybrid
good EMC behavior. They can operate briefly are initially available in three sizes. Their drive consists of a 2-l turbo charged gasoline
at up to 300 A (peak) and at ambient tem- rated inductances range from 1 to 47 μH, engine, an integrated starter generator, a
peratures up to 150 °C. depending on the type. The company will 48-V electrical system, and a brake energy
expand the offering of its SPM power induc- recuperation function.
tors furthermore.

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