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  • www.dufournier-technologies.com

    RACING SERVICES

    In motorsports, tyre-ground interaction is the single most important and least understood area of four-wheels vehicle design and performance.

    As a matter of fact tyre is usually considered as an invariant and not used enough to break away from the competition.

    The services offered by DUFOURNIER Technologies are based on an unique know-how:

    The knowledge of the tyre internal functioning,

    The functioning analysis of the tyre-suspension system based on objective criteria.

  • www.dufournier-technologies.com

    MODELLING ACTIVITIES

    Magic Formula

    Dufournier Technologies Models

    1. DT3 (Pressure dependant)

    2. DT4 (Ground roughness dependant)

    3. DT8 (Rolling and Loaded Radius)

    4. DT5 (Thermo-mechanical)

    5. Other Specific models (Wear)

    KNOWLEDGE & UNDERSTANDING OF TYRE

    TYRE MEASUREMENT IN REAL CONDITIONS

    Skid Trailer Forces (RME)

    Wheel load axis separation

    Measurement accuracy

    Measurement on real ground

    Embedded Measurement

    Suspension instrumentation

    Speed optical measurement (Datron)

    Specific Design of Experiment (DeO)

    TYRE UNDERSTANDING

    Optimal Functioning Point

    1. Slip angle / Longitudinal drift

    2. Inflation Pressure

    3. Camber

    4. Temperature range

  • www.dufournier-technologies.com

    SEASON SUPPORT

    SIMULATION - SIMU LAB

    TYRE-SUSPENSION ANALYSIS

    Global knowledge and understanding during inter-season Support for specific measurement and mechanical understanding (differential, suspension bench)

    Support for test meeting and help for Design of Experiment (DoE)

    Support for Race Meeting Race preparation (Simulation DoE for testing)

    Free practice data analysis optimized set-up adjustments & evolution trends for qualifying session

    Post-meeting analysis on qualifying session and race

    Support IPG CarMaker IPG Driver Well-known

    Most successfully completed Virtual Driver

    VEHICLE DYNAMICS KNOW-HOW

    Objective Criteria

    The adjustment of tyre-suspension system according to the ground characteristics requires specific technical tools as wellas long experience in tyre and suspension system.

    Thanks to its knowledge, DUFOURNIER Technologies makes thermo mechanical analysis. The major objective of this activity is to deliver the performance of chassis and suspension from the tyre point of view.

    In-house developed motorsport tool box Set-up interface

    Specific sub-system (aerodynamic )

    Accuracy High level of correlation

    Relevant set-up adjustments

  • www.dufournier-technologies.com

    Tyre training courses General approach of tyre & elastomerous,

    Tyre mechanic & thermo-mechanic description,

    Operational use of tyre on a qualified ground

    RacingLab / SetupLab

    Data acquisition analysis

    Set-up performance understanding

    Chassis analysis training session Main techniques to analyse tyre-suspension performance,

    Focus on real tools handling with concrete illustrations.

    Simulation SimulabPro training session General review of the most famous simulators,

    Simulation on SimulabPro under teacher supervision.

    Tyre model training session Review of the main existing tyre models: Brush, Rmod-k, Swift

    Focus on Pacejka model (description, performance, limitations, ) & concrete exercises with SimulabPro

    RMS (Roughness Measurement System)

    Ground characterization regarding tyre

    ISO 13473-1 reference

    TSD (Tyre Selection Device)

    Bankinometre

    Track characterization with GPS

    Complete map with banking

    Simulab Pro Vehicle Dynamics simulation

    Based on IPG CarMaker & IPG Driver

    Specific Motorsport Tool box

    TRAINING COURSES

    SOFTWARE & SPECIFIC DEVICES

    RMS TSD

  • www.dufournier-technologies.com

    42 bis, avenue du Mont Dore63110 BEAUMONT FRANCE

    Tel (33) 473.69.89.50Fax (33) 473.69.89.51

    Mail : contact@dufournier-technologies.comwww.dufournier-technologies.com

    Xavier MAUME

    Tel (33) 473.69.89.54Fax (33) 473.69.89.51

    E-Mail : xavier.maume@dufournier-technologies.com

    Tyre knowledge and understanding

    Vehicle Dynamics Know-How Frdric RUAT

    Tel (33) 473.69.89.50Fax (33) 473.69.89.51

    E-Mail : frederic.ruat@dufournier-technologies.com

    Software Specific devices Cdric VIAL

    Tel (33) 473.69.89.54Fax (33) 473.69.89.51

    E-Mail : cedric.vial@dufournier-technologies.com

    Training Courses Tyre analysis Arnaud DUFOURNIER

    Tel (33) 473.69.89.52Fax (33) 473.69.89.51

    E-Mail : arnaud.dufournier@dufournier-technologies.com