Cover Stories
Current Issue
MTZ worldwide is always in pole position when it comes to engine development and technology. Packed with detailed reports from research and development for highly specialised engineers. MTZ worldwide is an essential reading for technology-oriented management in the automotive industry with a special focus on engine development. Expert authors from industry and technology report on research projects.
Cover Stories
Current Issue
Cover Story – Electric Drives
BorgWarner has designed, built, and tested several electrified axles for medium duty commercial applications. The company’s experience with the key components that make up the axles -including the motors, inverters, and transmissions – as well as its system level simulation capabilities regarding batteries, on- and off-board charging systems and thermal management components allowed for an optimization from a total vehicle perspective.
Efficiency Potential Through Holistic Optimization of Electric Drive Systems In order to increase the efficiency and therefore the range of electric vehicles, many car manufacturers are relying on ever larger and therefore heavier and more expensive batteries. ZF shows that higher efficiency already can be achieved in the first step of the development and optimization of an electric drive. Using a holistic, multi-criteria optimization approach allowed to develop a drive that sets a new benchmark in terms of performance data, and at the same time enables significantly greater sustainability in terms of the supply chain.
In the Interview, Thomas Müller, Executive Vice President Future Powertrain at IAV, comments on the price development of BEVs as well as technology options for electric machines and traction batteries.
Materials
n recent years, electromobility has fundamentally changed the automotive industry and has posed numerous technical challenges, including the growing demand for higher powertrain efficiency. Frictional resistance in the entire drivetrain, such as in the electric motor, reduction gearbox and differential, must be considered to optimize the vehicle’s performance and driving range. High performance polymers are playing an ever-increasing role in tribological driveline components, enabling high performance, durability, and efficiency of gearboxes in various applications. This article will take a closer look at two demanding applications: tribologically optimized thrust washers in transmissions and high-performance seals in hydrogen propulsion systems. DuPont has developed a novel material that can withstand even the most challenging tribological conditions, such as the combination of high loads and extremely high speeds.
Acoustics – NVH
Tonal noise components, primarily originating from the electric drive unit, dominate the interior sound experience in electric vehicles. In this article, AVL presents a methodology that focuses on tonality evaluation, target setting, and the integration of artificial intelligence for multi-dimensional optimization.
Simulation – Testing
Battery electric vehicles will be a key part of future mobility. Reinova has set up a network of different test benches for battery tests that take into account the higher technical requirements of new battery concepts. Artificial intelligence methods are also used for test specification.
In The Spotlight
In modern vehicles, the braking system is the dominant source of particulate emissions. Many regions around the world therefore also want to limit non-engine particulate emissions. In the EU, the future Euro 7 directive will stipulate limit values for brake particle emissions from passenger cars and light commer-cial vehicles up to 3.5 t total mass. In addition, specifications for particulate matter caused by tire abrasion and for brake and tire particles in heavier com-mercial vehicles are under discussion.
Research – Emissions
In the FVV project (no. 1412) “Zero-Impact Tailpipe Emission Powertrains”, two reference vehicles with current exhaust gas aftertreatment systems were examined under demanding operating conditions at the RWTH Aachen University. lt is shown that both vehicles no longer have a significant impact on air quality in most scenarios and that they fulfill the criterion of Zero-Impact Emissions. By integrating additional heating measures and increasing catalytic converter volumes, this can also be achieved in other critical scenarios.
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Closing Statement
MTZworldwide is the English digital edition of MTZ, which has been published for over 80 years. Always at the pulse of drive development, its appearance has changed dramatically in recent years. Today it is the international technical-scientific magazine for engineers in drive development with a special focus on the development of electrified and combustion engine drives with a pronounced focus on the electrification of 48-volt to high-voltage and fuel cell applications.
The spectrum ranges from innovative passenger car and commercial vehicle drives to components and large engines. Of course, classic topics such as friction minimization, turbocharging or charge cycle and the valvetrain still have a firm place in MTZworldwide. It is therefore a must read for technology-oriented management and promotes the global transfer of information between manufacturers, the supplier industry, service companies and research and development centers all over the world.
Marc Ziegler
Deputy Editor in Chief
The scientific advisory board of MTZworldwide is made up of industry experts who work for leading companies and research institutions. By sharing ideas on a regular basis with the editorial team, the board members help to maintain the high quality of the magazine’s content. The board provides the editorial team with first-hand information about the latest development trends and offers advice and constructive criticism.
Prof. Dr.-Ing. Michael Bargende
Universität Stuttgart
Prof. Dr. techn. Christian Beidl
TU Darmstadt
Dr. Martin Berger
Mahle International GmbH
Ragnar Burenius
Volvo Car Corporation
Prof. Dr.-Ing. Lutz Eckstein
RWTH Aachen
Prof. Dr. Bernhard Geringer
ÖVK
Dipl.-Ing. Dietmar Goericke
Forschungsvereinigung Verbrennungskraftmaschinen e. V.
Prof. Dr.-Ing. Uwe Dieter Grebe
AVL List GmbH
Prof. Dr.-Ing. Jürgen Hammer
Robert Bosch GmbH
Lars Hentschel
Volkswagen AG
Dr. Thomas Johnen
Opel Automobile GmbH
Rainer Jückstock
Tenneco Inc.
Matthias Kratzsch
IAV GmbH
Prof. Dr. sc. techn. Thomas Koch
WKM
Dipl.-Ing. Christian Lensch-Franzen
APL
Prof. Dr. h. c. Helmut List
AVL List GmbH
Peter Müller-Baum
VDMA e. V.
Prof. Dr.-Ing. Stefan Pischinger
FEV GmbH
Dr. Peter Sauermann
BP Europe SE
Dr.-Ing. Otmar Scharrer
ZF Friedrichshafen AG
Dr. Markus Schwaderlapp
Deutz AG
Dr. Michael Winkler
Hyundai Motor Europe Technical Center GmbH
Andreas Wolf
Vitesco Technologies