Internationale Konferenz „CVT in automotive applications – Set screws for a better efficiency“

Registration

Welcome and opening by congress chair

Dr.-Ing. Harald Naunheimer, Senior Vice President Corporate R&D, ZF
Friedrichshafen AG, Friedrichshafen, Germany

Anniversary greetings

Prof. Dr.-Ing. Udo Ungeheuer, president, VDI The Association of
German Engineers, Duesseldorf, Germany

30 years Drivetrains for Vehicles - history and future

Prof. Dr.-Ing. Bernd-Robert Höhn, Emeritus, Institute for Machine
Elements/FZG, Technische Universität München, Garching, Germany

Driveline Intelligence – efficiency, comfort and safety

• Market needs, technology trends
• Predictive driving (DAS sensors and V2X)
• Interaction driveline and automated driving

Dr.-Ing. Stefan Sommer, CEO , ZF Friedrichshafen AG, Friedrichshafen,
Germany

Challenges and opportunities regarding real world
efficiency

• What “efficiency” means for car drivers, industry and
  authorities
• How today´s drive cycles reflect emissions reality
• Opportunities and limitations of electrified powertrains
• Powertrain and transmission designs for real-world
  requirements

Dipl.-Ing. (FH) Bernd Eckl, Executive Vice President Sales, Marketing,
Business Development & Corporate Communications, GETRAG,
Untergruppenbach, Germany

SUBARU CVT toward 2020

• Pinoneer of mass production CVT
• Further CVT expansion in the market
• Next generation CVT

Osamu Eriguchi, General Manager of Transmission Design Department,
Fuji Heavy Industries Ltd., SUBARU Engineering Division, Tokyo, Japan

Future drivetrain requirements for global off-highway
markets

Christopher A. Myers, Global Director Tractor Platform Engineering,
Product Engineering Center, Deere & Company, Waterloo, USA

Coffee break and visit to the exhibition

Welcome address and opening of the conference by
conference chair

Prof. Dr.-Ing. Dr. h.c. Albert Albers, Head of IPEK, IPEK –
Institute of Product Engineering, Karlsruhe Institute of Technology (KIT),
Karlsruhe, Germany

Keynote
Technologies need to have more flexibility

• Limitation of technologies aiming to improve only efficiency
• Flexibility – the key to evolve for technologies
• CVT – distinctive flexibility and the potential to evolve

Dr. Ryozo Hiraku, Alliance General Manager for
Powertrain Advanced Engineering, Technology Planning
Department, Nissan Motor Co., Ltd., Atsugi Kanagawa, Japan

CVT in comparison to other transmission concepts

• Comparison of CVT, DCT and MT - State-of-the-art
  powertrain for B-class vehicles
• Simulation and vehicle measurements
• Efficiency, comfort, performance

Dr.-Ing. Gereon Hellenbroich, Department Manager Transmission
Design and CAE, Co-authors: Peter Janssen, Dr. Ingo Steinberg, all of
FEV GmbH, Aachen, Germany

Enhanced performance of next generation LINEARTRONIC

• Unique concept of high efficiency variator and
  longitudinal transaxle configuration
• Improving fuel economy by the expand ratio spread
  and reduce friction losses
• Optimizing driving comfort and dynamics by the new
  shift strategy

Masami Oguri, M.Sc., Manager of Transmission Project Group,
Transmission Design Department,
Co-authors: Hironaga Itou, Naoyuki Akiyama, all of Fuji Heavy
Industries Ltd., SUBARU Engineering Division, Tokyo, Japan

Lunch break and visit to the exhibition

How to build better CVTs?

• Benefit of well optimized CVT components for customer
• Latest status of development of CVT chains,
  testing results concerning durability and NVH
• Outlook for further development of CVT chain – create
  a new modular concept
• Further ideas for components inside the CVT
  transmission

Dipl.-Ing. André Teubert, Senior Manager Development CVT, LuK
GmbH & Co. KG, Buehl, Germany

 VT5, the next high efficient CVT Generation of Punch
Powertrain

• CVT potential
• Family approach
• Transmission Lay-out
• Efficiency Measures

Ir. Koen Laurijssen, Chief Engineer, System Engineer VT5, CVT –
Controls Engineering – Powertrain Simulation
Co-Authors: Dr. Ir. Alex Serrarens, Ir. Elias van Wijk, Ing. Gert-Jan
Vogelaar, all of Punch Powertrain, Sint-Truiden, Belgium and Eindhoven,
The Netherlands

Start/Stop-Coasting and CVT: an effective, customer
perceivable and attractive fuel-saving combination

• Operating concept, requirements for the vehicle
  system, driver experience
• Successful feasibility study for CVT applications based
  on simulations
• High fuel-saving potential, evaluation of driver comfort
  and hardware requirements for the CVT at restart

Alexandre Pigeard, Engineer (Master degrees), Section Manager
Software and Simulations, Research & Development, Engineering
Transmissions, Co-authors: Tom van Dongen, both of Bosch
Transmission Technology B.V., Tilburg, The Netherlands, Steffen Strauß,
Robert Bosch GmbH, Schwieberdingen, Germany

Testing the CMM model of chain-CVT transmissions in
steady-state and shifting conditions

• Experiment on shifting response of chain and belt
  continuously variable transmissions
• Modelling of shifting response and comparison with
  experiments

Prof. PhD Giuseppe Carbone, Professor, Department of Mechanics,
Mathematics and Management, Politecnico di Bari, Italy

Coffee break and visit to the exhibition

Model-based system design methods for vehicular
powertrains

• Automated-discrete-topology modeling for hybrid powertrain design
• Integrated design procedures: examples of optimal powertrain sizing
• Influence of physical design specifications on the control design
  specifications for CVT-based powertrain design

Dr. Ir. Theo Hofman, Assistant Professor, Mechanical Engineering,
Co-authors: Rob Roijackers, Wouter van Buul, all of Eindhoven
University of Technology (TU/e), Eindhoven, The Netherlands

CVT-Hybrid – low emission, high performance

• The Multimode CVT – example for an advanced CVT
  hybrid concept
• Key aspects: efficiency enhancement by temporary
  variator disconnection combined with direct gear
  driving
• Simulation results regarding CO2 benefits, vehicle
  performance and driving comfort by using a CVT hybrid

Dr. Christian Lauinger, Manager Advanced Development CVT /
wet DC, Co-authors: Dipl.-Ing. Andreas Götz, Dipl.-Ing. (FH) Bernhard
Walter, all of LuK GmbH & Co. KG, Buehl, Germany

End of the conference day

Reception and evening lunch

Jubilee Highlight

Science Slam 2016
The award of the ”Golden Gear“!

They are young and brainy and have a sense of humour. We are talking about
four junior scientists who have just graduated from university. They will tell you
in a joking and humorous manner how to bring across scientific contents to
someone in a fun way. And you, the audience are the jury who will vote for the
winner of this contest with different levels of your applause. Look forward to

• Doris Aschenbrenner from the University of Würzburg talking about “Networking
  4.0“,
• Johannes Kretzschmar from Jena University talking about “Frankenstein’s
  electric vehicle“,
• Mogan Ramesh from the Technische Universität München talking about “My
  engine is a vegan“ and
• Stefan Kurtenbach from RWTH Aachen University talking about “Programming
  transmission software“.

Who is going to win the Golden Gear?

Development of hydraulic control system for a new widerange
CVT

• New wide-range CVT feature
• Control system for the new wide-range CVT
• Key technologies for the new hydraulic control system

Katsuo Kato, Development Engineer, Hardware System Development
Department, Jatco Ltd, Atsugi City, Kanagawa, Japan

Development of an improved electro-hydraulic CVT
actuator

• Explanation and design principles of the Servo-
  Actuation-System
• Control performance and robustness with regard to
  shifting and pulley clamping
• Actuator loading and power consumption

Loek Marquenie, M.Sc., Project Leader, Research & Development,
Co-authors: Ir. Jacques van Rooij, Ir. Tim Clephas, all of Gear Chain
Industrial BV, Eindhoven, The Netherlands

The trend and future of Torque Converter for CVT

• Change with the time of requirements on TC for CVT
  compared with that of Step AT’s
• Future TC for CVTs
• Slip or Lock up?

Shinji Fujimoto, Executive Officer, Executive General Manager,
Development Headquarters and Nobuyoshi Shiomura,
Co-authors: Keiji Sato, Yuuki Kawahara, all of EXEDY Corporation,
Neyagawa-City, Osaka, Japan

Improvement of transmission efficiency by reducing the
drag torque in disengaged wet clutch

• Reducing CO2 emission by improvement of efficiency of
  transmission
• Facing of friction disk made with paper based material
• Improvement of the fuel efficiency of vehicles by
  reduction of drag torque in open disengaged wet
  clutch, achievement by grooving on friction disk
  surface
• An analytical model for estimating the drag torque
  characteristics

PhD Shahjada A. Pahlovy, Research and Development Engineer,
Advanced Technology Development,
Co-authors: Dr. PhD Syeda Faria Mahmud, Norio Takakura all of Dynax
Corporation, Tomakomai, Hokkaido, Japan

Coffee break

Recent material developments for further optimization
of pushbelt CVT power density

• Transmittable power & torque, transmission size, ratio
  coverage, and durability
• Improvement of the fatigue properties of the pushbelt
  Loops
• Use of high-alloyed maraging steels with high
  mechanical strength and high fatigue strength
• Improved fatigue properties of pushbelt loops by
  optimization of the maraging steel compositions and
  hardening heat treatments

Bert Pennings, Ir. PDEng., Research Engineer, Research &
Development, Bosch Transmission Technology B.V., Tilburg, The
Netherlands

Tribosystemic view of CVT in drive systems

• Understand complex friction mechanisms in context of
  overall system behaviour
• Generate robust friction systems for efficient CVT
  applications, ensure system properties, which enables
  reducing system safety and thus increasing energy
  efficiency
• Analyse the influence of complex kinematic
  relationships on the tribological behaviour, gain
  simulation models of processes and the impact on the
  system behaviour
• Evaluate benefit of CVT for electrified drive systems

Dipl.-Ing. Sascha Ott, Managing Director
Co-authors: Prof. Dr.-Ing. Dr. h.c. Albert Albers, Dipl.-Ing. Katharina
Bause, all of IPEK Institute of Product Engineering, Karlsruhe Institute
of Technology (KIT), Karlsruhe, Germany

Influences of surface structures on the efficiency of
continuously variable transmissions

• Experimental tests with differently structured pulley surfaces
• Simulations for the lubricant displacement in the tribological contact
  and for the system behavior of the variator
• Influences of the structures on the efficiency and the Performance depending on the operating point

Dipl.-Ing. Jan-Niklas Mach, Research Associate
Co-author: Prof. Dr.-Ing. Gerhard Poll, both of Institut für Maschinenkonstruktion
und Tribologie, Leibniz University of Hannover, Germany

Lunch

CVT powerpath solutions using Continuously Variable
Planetary (CVP) for maximum fuel economy

• Development of multimode CVT power path concepts
  by using a continuously variable planetary that
  optimize ratio spread and efficiency
• A loss model of the CVT transmission for a vehicle
  simulation to estimate fuel economy
• An example of a fuel economy simulation for a typical
  automotive application

Gordon McIndoe, MSc. Mechanical Engineering, Technical Expert
Transmission Systems, Light Vehicle Driveline Technologies, Dana
Holding Corporation, Leander, Texas, USA
Co-author: Evrim Taskiran, Dana Spicer Brugge office, Belgium

The Cone-Ring-Transmission will go into production!

• Concept and efficiency of the Cone-Ring-Transmission
  (KRG)
• Comparison to other CVTs
• Way to Series Production

Dr.-Ing. Heinz-Dieter Schneider, Manager Construction and
Development, Co-author: Dipl.-Ing. Roy Rompelberg, both of GIF –
Entwicklungsgesellschaft mbH, Alsdorf, Germany

High efficiency “full-toroidal” traction drive CVT –
Technology improvements and application to front wheel
drive cars

• Increased traction drive efficiency
• Reduced parasitic losses
• Minimized actuator power required to change speed ratio and
  optimized clamp load
• Combining these advances into a high efficiency front wheel drive CVT

John Fuller, B.Eng. (Hons), Director Intellectual Property, New Concepts
and Intellectual Property, Co-author: Chris Gaskell, both of Torotrak
Group, Leyland, UK

Conclusions by the conference chair and end of the
conference