racing services 2010 gb - dufournier...

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 sys tem based on objective criteria.


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


SEASON SUPPORT

SIMULATION - SIMU LAB

TYRE-SUSPENSION ANALYSIS

� Global knowledge and understanding during inter-sea son� 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


� 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


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 : [email protected]

� Tyre knowledge and understanding

� Vehicle Dynamics Know-How Frédéric RUAT

Tel (33) 473.69.89.50Fax (33) 473.69.89.51


� Software – Specific devices Cédric VIAL

Tel (33) 473.69.89.54Fax (33) 473.69.89.51


� Training Courses – Tyre analysis Arnaud DUFOURNIER

Tel (33) 473.69.89.52Fax (33) 473.69.89.51


racing services 2010 gb - dufournier...

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