The Pneumatic Tyre – Understanding Its Role and Modelling Its Performance in Virtual Computer Based Design
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1. What Is Uptis and What Advantages Does It Offer?
Frequently Asked Questions 1. What is Uptis and what advantages does it offer? Uptis (acronym standing for “Unique Puncture-proof Tire System”) is an assembled airless wheel structure. Uptis has been made possible through Michelin’s mastery and expertise with tire mechanics and high-tech materials. It also represents an evolution of Michelin’s expertise in TWEEL technology. Uptis can be thought of as the first in a new generation of airless solutions. This technology for passenger vehicles offers a number of advantages: ▪ Car drivers feel safer and more secure on the road due to the reduced risk of flat tires and other air loss failures that result from punctures or road hazards. ▪ Fleet owners and professional vehicle drivers optimize their business productivity (no downtime from flats, near-zero levels of maintenance). ▪ Raw material use is reduced, which in turn reduces waste. 2. Why do car drivers feel more at ease with Uptis? Uptis is designed to be impervious to traditional tire failures due to air loss. It does not use compressed air. It therefore eliminates the need for regular inflation pressure maintenance. 3. What is the strategy behind Uptis? Uptis represents Michelin’s vision for the future of mobility. Michelin illustrated its vision of sustainable mobility through the Vision concept1, which the Group unveiled at the Movin’On World Summit on Sustainable Mobility in 2017. Uptis shows how Michelin is adhering to its roadmap for research and development, which comprises these four main pillars of innovation: Airless, Connected, 3D-printed and 100% Sustainable (i.e., renewable or bio-sourced materials). -
NEC Classic Show
THE OFFICIAL ALFA ROMEO OWNERS CLUB EAST MIDLANDS NEWSLETTER ■ November 2018 ■ Issue 214 Coming up ... NEC Classic Show 9-11 November November Meeting The Classic Motor Show at the NEC is a hugely automotive exhibitors George & Dragon Thringstone enjoyable event for car fans. AROC has been and traders, with Weds 14 November from 7.30pm involved with it since its inception in the 1990s, and everything from books today it holds a key place in the Club’s events diary, and models to Our November meeting night will include the Our Section has been engaged in the AROC paintings and detailing gear. There’s also the infamous ‘What’s it worth’ quiz, with some nice display’s organisation there since 2001, when the Silverstone auction to see plus motoring celebrities prizes. Nothing strenuous, it’s all multiple new car on show was the 147, now often regarded including The Wheeler Dealers and many choice guesswork vaguely based around the as a Modern Classic! Generally the Club has had a more.’ Importantly, this is the biggest Classic car value of Italian Classic Cars, but other stuff gets theme each time for example; coupés, Spiders, show for car clubs now in the world, and over thrown in…. It’s a good laugh too! Quadrifoglios. Last year it was ‘Modified Alfas’ and 72,000 people are expected across the 3 days of included a lot of newer models tagged as Future or opening. Modern Classics. For 2018 we’re going back to the If you fancy going you can get a handy discount more traditional definition with, bar a couple, all on tickets for Saturday and/or Sunday using the cars being over 25 years of age, and some a lot AROC discount code which is on the members’ older than that. -
Prestone Ebook Winter Driving 3
A Prestone ebook: WINTER DRIVING Of all the seasons, winter creates the most challenging driving conditions, and can be extremely tough on your car. Treacherous weather coupled with dark evenings can make driving hazardous, so it’s vital you ready yourself and your car before the season takes hold. From heavy rain to ice and snow, winter will throw all sorts of extreme weather your way — so it’s best to be prepared. By checking the condition of your car and changing your driving style to adapt to the hazardous conditions, you can keep driving no matter how extreme the weather becomes. To help you stay safe behind the wheel this season, here’s an in-depth guide on the dos and don’ts of winter driving. From checking your vehicle’s coolant/antifreeze to driving in thick fog, heavy rain and high winds — this guide is packed with tips and advice on driving in even the most extreme winter weather. PREPARING YOUR VEHICLE FOR WINTER DRIVING Keeping your car in a good, well maintained condition is important throughout the year, but especially so in winter. At a time when extreme weather can strike at any moment, your car needs to be prepared and ready for the worst. The following checks will help to make sure your car is ready for even the toughest winter conditions. COOLANT / ANTIFREEZE Whatever the weather, your car needs coolant/antifreeze all year round to make sure the engine doesn’t overheat or freeze up. By adding a quality coolant/antifreeze to your engine, it’ll be protected in all extremes — from -37°C to 129°C and you’ll also be protected against corrosion. -
The Parliament of the Commonwealth of Australia Tyre Safety Report Op the House of Representatives Standing Committee on Road Sa
THE PARLIAMENT OF THE COMMONWEALTH OF AUSTRALIA TYRE SAFETY REPORT OP THE HOUSE OF REPRESENTATIVES STANDING COMMITTEE ON ROAD SAFETY JUNE 1980 AUSTRALIAN GOVERNMENT PUBLISHING SERVICE CANBERRA 1980 © Commonwealth of Australia 1980 ISBN 0 642 04871 1 Printed by C. I THOMPSON, Commonwealth Govenimeat Printer, Canberra MEMBERSHIP OF THE COMMITTEE IN THE THIRTY-FIRST PARLIAMENT Chairman The Hon. R.C. Katter, M.P, Deputy Chai rman The Hon. C.K. Jones, M.P. Members Mr J.M. Bradfield, M.P. Mr B.J. Goodluck, M.P. Mr B.C. Humphreys, M.P. Mr P.F. Johnson, M.P. Mr P.F. Morris, M.P. Mr J.R. Porter, M.P. Clerk to the Committee Mr W. Mutton* Advisers to the Committee Mr L. Austin Mr M. Rice Dr P. Sweatman Mr Mutton replaced Mr F.R. Hinkley as Clerk to the Committee on 7 January 1980. (iii) CONTENTS Chapter Page Major Conclusions and Recommendations ix Abbreviations xvi i Introduction ixx 1 TYRES 1 The Tyre Market 1 -Manufacturers 1 Passenger Car Tyres 1 Motorcycle Tyres 2 - Truck and Bus Tyres 2 ReconditionedTyi.es 2 Types of Tyres 3 -Tyre Construction 3 -Tread Patterns 5 Reconditioned Tyres 5 The Manufacturing Process 7 2 TYRE STANDARDS 9 Design Rules for New Passenger Car Tyres 9 Existing Design Rules 9 High Speed Performance Test 10 Tests under Conditions of Abuse 11 Side Forces 11 Tyre Sizes and Dimensions 12 -Non-uniformity 14 Date of Manufacture 14 Safety Rims for New Passenger Cars 15 Temporary Spare Tyres 16 Replacement Passenger Car Tyres 17 Draft Regulations 19 Retreaded Passenger Car Tyres 20 Tyre Industry and Vehicle Industry Standards 20 -
RELATIONSHIPS BETWEEN LANE CHANGE PERFORMANCE and OPEN- LOOP HANDLING METRICS Robert Powell Clemson University, [email protected]
Clemson University TigerPrints All Theses Theses 1-1-2009 RELATIONSHIPS BETWEEN LANE CHANGE PERFORMANCE AND OPEN- LOOP HANDLING METRICS Robert Powell Clemson University, [email protected] Follow this and additional works at: http://tigerprints.clemson.edu/all_theses Part of the Engineering Mechanics Commons Please take our one minute survey! Recommended Citation Powell, Robert, "RELATIONSHIPS BETWEEN LANE CHANGE PERFORMANCE AND OPEN-LOOP HANDLING METRICS" (2009). All Theses. Paper 743. This Thesis is brought to you for free and open access by the Theses at TigerPrints. It has been accepted for inclusion in All Theses by an authorized administrator of TigerPrints. For more information, please contact [email protected]. RELATIONSHIPS BETWEEN LANE CHANGE PERFORMANCE AND OPEN-LOOP HANDLING METRICS A Thesis Presented to the Graduate School of Clemson University In Partial Fulfillment of the Requirements for the Degree Master of Science Mechanical Engineering by Robert A. Powell December 2009 Accepted by: Dr. E. Harry Law, Committee Co-Chair Dr. Beshahwired Ayalew, Committee Co-Chair Dr. John Ziegert Abstract This work deals with the question of relating open-loop handling metrics to driver- in-the-loop performance (closed-loop). The goal is to allow manufacturers to reduce cost and time associated with vehicle handling development. A vehicle model was built in the CarSim environment using kinematics and compliance, geometrical, and flat track tire data. This model was then compared and validated to testing done at Michelin’s Laurens Proving Grounds using open-loop handling metrics. The open-loop tests conducted for model vali- dation were an understeer test and swept sine or random steer test. -
MICHELIN® X® TWEEL Warranty Overview
MICHELIN® TWEEL® Airless radial tire Warranty Guide Contents MICHELIN® Tweel® Tire Warranty Overview ............................................................................. 3–4 Common Warranty Specifi cations ...............................................................................................5 Parts of a Tweel® Airless Radial Tire .............................................................................................5 Examination Tools .......................................................................................................................6 MICHELIN® X® TWEEL® SSL AIRLESS RADIAL TIRES Technical Specifi cations: MICHELIN® X® Tweel® SSL Tires .............................................................6 MICHELIN® X® Tweel® SSL Tire Torque Specs and Retreading .......................................................7 Tweel® SSL Tire Warranty vs. Wear Guide ..............................................................................8–12 MICHELIN® X® TWEEL® TURF AIRLESS RADIAL TIRES Technical Specifi cations: MICHELIN® X® Tweel® Turf Tires ...........................................................13 Tweel® Turf Tire Proper Installation Instructions ..........................................................................13 Tweel® Turf Tire Warranty vs. Wear Guide ........................................................................... 14–17 MICHELIN® X® TWEEL® CASTERS Technical Specifi cations: MICHELIN® X® Tweel® Casters..............................................................17 Tweel® Caster Warranty -
Michael Banfield Collection
The Michael Banfield Collection Friday 13 and Saturday 14 June 2014 Iden Grange, Staplehurst, Kent THE MICHAEL BANFIELD COLLECTION Friday 13 and Saturday 14 June 2014 Iden Grange, Staplehurst, Kent, TN12 0ET Viewing Please note that bids should be ENquIries Customer SErvices submitted no later than 16:00 on Monday to Saturday 08:00 - 18:00 Thursday 12 June 09:00 - 17:30 Motor Cars Thursday 12 June. Thereafter bids +44 (0) 20 7447 7447 Friday 13 June from 09:00 +44 (0) 20 7468 5801 should be sent directly to the Saturday 14 June from 09:00 +44 (0) 20 7468 5802 fax Please call the Enquiries line Bonhams office at the sale venue. [email protected] when out of hours. +44 (0) 20 7468 5802 fax Sale times Automobilia Please see page 2 for bidder We regret that we are unable to Friday 13 June +44 (0) 8700 273 619 information including after-sale Automobilia Part 1 - 12 midday accept telephone bids for lots with collection and shipment a low estimate below £500. [email protected] Saturday 14 June Absentee bids will be accepted. Automobilia Part 2 - 10:30 Please see back of catalogue New bidders must also provide Motor Cars 15:00 (approx) for important notice to bidders proof of identity when submitting bids. Failure to do so may result Sale Number Illustrations in your bids not being processed. 22201 Front cover: Lot 1242 Back cover: Lot 1248 Live online bidding is CataloguE available for this sale £25.00 + p&p Please email [email protected] Entry by catalogue only admits with “Live bidding” in the subject two persons to the sale and view line 48 hours before the auction to register for this service Bids +44 (0) 20 7447 7448 +44 (0) 20 7447 7401 fax To bid via the internet please visit www.bonhams.com Bonhams 1793 Limited Bonhams 1793 Ltd Directors Bonhams UK Ltd Directors Registered No. -
Mechanics of Pneumatic Tires
CHAPTER 1 MECHANICS OF PNEUMATIC TIRES Aside from aerodynamic and gravitational forces, all other major forces and moments affecting the motion of a ground vehicle are applied through the running gear–ground contact. An understanding of the basic characteristics of the interaction between the running gear and the ground is, therefore, essential to the study of performance characteristics, ride quality, and handling behavior of ground vehicles. The running gear of a ground vehicle is generally required to fulfill the following functions: • to support the weight of the vehicle • to cushion the vehicle over surface irregularities • to provide sufficient traction for driving and braking • to provide adequate steering control and direction stability. Pneumatic tires can perform these functions effectively and efficiently; thus, they are universally used in road vehicles, and are also widely used in off-road vehicles. The study of the mechanics of pneumatic tires therefore is of fundamental importance to the understanding of the performance and char- acteristics of ground vehicles. Two basic types of problem in the mechanics of tires are of special interest to vehicle engineers. One is the mechanics of tires on hard surfaces, which is essential to the study of the characteristics of road vehicles. The other is the mechanics of tires on deformable surfaces (unprepared terrain), which is of prime importance to the study of off-road vehicle performance. 3 4 MECHANICS OF PNEUMATIC TIRES The mechanics of tires on hard surfaces is discussed in this chapter, whereas the behavior of tires over unprepared terrain will be discussed in Chapter 2. A pneumatic tire is a flexible structure of the shape of a toroid filled with compressed air. -
Automotive Engineering II Lateral Vehicle Dynamics
INSTITUT FÜR KRAFTFAHRWESEN AACHEN Univ.-Prof. Dr.-Ing. Henning Wallentowitz Henning Wallentowitz Automotive Engineering II Lateral Vehicle Dynamics Steering Axle Design Editor Prof. Dr.-Ing. Henning Wallentowitz InstitutFürKraftfahrwesen Aachen (ika) RWTH Aachen Steinbachstraße7,D-52074 Aachen - Germany Telephone (0241) 80-25 600 Fax (0241) 80 22-147 e-mail [email protected] internet htto://www.ika.rwth-aachen.de Editorial Staff Dipl.-Ing. Florian Fuhr Dipl.-Ing. Ingo Albers Telephone (0241) 80-25 646, 80-25 612 4th Edition, Aachen, February 2004 Printed by VervielfältigungsstellederHochschule Reproduction, photocopying and electronic processing or translation is prohibited c ika 5zb0499.cdr-pdf Contents 1 Contents 2 Lateral Dynamics (Driving Stability) .................................................................................4 2.1 Demands on Vehicle Behavior ...................................................................................4 2.2 Tires ...........................................................................................................................7 2.2.1 Demands on Tires ..................................................................................................7 2.2.2 Tire Design .............................................................................................................8 2.2.2.1 Bias Ply Tires.................................................................................................11 2.2.2.2 Radial Tires ...................................................................................................12 -
Wear, Friction, and Temperature Characteristics of an Aircraft Tire Undergoing Braking and Cornering
https://ntrs.nasa.gov/search.jsp?R=19800004758 2020-03-21T20:55:26+00:00Z View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by NASA Technical Reports Server NASA Technical Paper 1569 Wear, Friction, and Temperature Characteristics of an Aircraft Tire Undergoing Brakingand Cornering John L. McCarty, Thomas J. Yager, and S. R.Riccitiello DECEMBER 19 79 . ~~ TECH LIBRARY KAFB, NM OL3477b NASA Technical Paper 1569 Wear, Friction, andTemperature Characteristics of an Aircraft Tire Undergoing Brakingand Cornering John L. McCarty and Thomas J. Yager Langley ResearchCellter HamptotZ, Virgitlia S. R.Riccitiello Ames ResearchCelzter MoffettField, Califoruia National Aeronautics and Space Administration Scientific and Technical Information Branch 1979 SUMMARY An experimental investigation was conducted to evaluate the wear, friction, and temperature characteristics of aircraft tire treads fabricated from differ- entelastomers. Braking and corneringtests were performed on size 22 X 5.5, type VI1 aircraft tires retreaded with currently employedand experimental elastomers. The braking testsconsisted of gearingthe tire to a driving wheel of a ground vehicle to provide operations at fixed slip ratios on dry surfaces ofsmooth and coarseasphalt and concrete. The corneringtests involved freely rolling the tire at fixed yaw angles of O0 to 24O on thedry smooth asphalt surface. The results show thatthe cumulative tread wear varieslinearly with distancetraveled at all slip ratios and yaw angles. Thewear rateincreases with increasing slip ratio duringbraking and increasing yaw angleduring cor- nering. The extent ofwear in eitheroperational mode is influenced by the character of the runway surface. Of thefour tread elastomers investigated, 100-percentnatural rubber was shown to be theleast wear resistant and the state-of-the-artelastomer, comprised of a 75/25 polyblend of cis-polyisoprene and cis-polybutadiene, proved most resistantto wear. -
RFID for TIRES an Enabler for New Services
RFID FOR TIRES an enabler for new services Julien DESTRAVES R&D MICHELIN Page 1 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / INNOVATION is in MICHELIN DNA AIRLESS Tire CONNECTED Tire GREEN Tire RADIAL Tire TWEEL Page 2 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / AGENDA Benefits of RAIN RFID for tires and the associated challenges A Worldwide Standard for the Industry: ISO TC31 WG10 RFID Tire tags A Use Case example: Racing Tires Page 3 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / LIFE CYCLE AGAINST TIRE TAG INTEGRATION SCENARIOS Manufacturing 1st mounting After manufacturing equipment OEM Retreading Retrofitting End of Life Dealer Storage RFID embedded After retreading, embedded RFID identifies the carcass and not necessarily the tire RFID patch RFID patch possible RFID sticker RFID patch can identify the tire when not initially equipped with RFID Fair cost - Some lost on the way Page 4 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / WHY AND HOW TO USE RFID? ● Why to use RFID? 1. Guarantee of readability in all conditions • During the shelf life of the tire • During the entire tire life for a rolling tire • Leading to a far better traceability (even during tire manufacturing) • End of Life management potentially improved 2. Unfalsifiable: UII coding locked by the tire manufacturer 3. More robust against damages/ageing/robbery/counterfeiting 4. Fitting the needs of most stakeholders (OEM, Dealers, Governments, Retreaders, Tire manufacturers) 5. Better cost/benefit ratio (including the time to write and to read) 6. ISO standard for RFID Tire Tags available in 2018/19 7. Future readability of the RFID by the vehicle Page 5 / RAIN RFID Alliance / Julien DESTRAVES / June 2018 / BENEFIT FOR THE TIRE INDUSTRY Depending on the tag implementation technology 1. -
Final Report
Final Report Reinventing the Wheel Formula SAE Student Chapter California Polytechnic State University, San Luis Obispo 2018 Patrick Kragen [email protected] Ahmed Shorab [email protected] Adam Menashe [email protected] Esther Unti [email protected] CONTENTS Introduction ................................................................................................................................ 1 Background – Tire Choice .......................................................................................................... 1 Tire Grip ................................................................................................................................. 1 Mass and Inertia ..................................................................................................................... 3 Transient Response ............................................................................................................... 4 Requirements – Tire Choice ....................................................................................................... 4 Performance ........................................................................................................................... 5 Cost ........................................................................................................................................ 5 Operating Temperature .......................................................................................................... 6 Tire Evaluation ..........................................................................................................................