SUPPLEMENT TO STANDARDISATION OF NON-UNIFORMITY ON PASSENGER CAR TYRES WITH RESPECT TO OSCILLATORY COMFORT AND HANDLING

It is generally recognized that a car tyre design represents a very heterogenous system, which considerably affects its performances in actual production conditions. In fact the technological failures during a manufacturing stage create various radial, lateral and tangential stiffness to a tyre along its circumference. Similar effects are caused by uneven mass distribution along the circumference and by deviations of tyre geometrical shape from that specified. Commonly in literature such occurences are known as tyre uniformity. Uniformity is inspected during the tyre manufacturing process whereby the changes in radial and lateral and circumferential forces are observed including the occurence of so-called cone and angular effect. Their definitions can be found in literature and therefore this will not be discussed here any further. The non-uniformity of tyres will affect the car performances, particularly the oscillatory comfort, handling, fuel economy, noise, etc. Therefore the trend to evaluate these effects is qulte conceivable. This paper will discuss standardization of tyre radial and lateral force variations as well as angular and cone effects with respect to oscillatory comfort and handling of passenger cars from the manufacturing programme of Zavodi "Crvena Zastava".

• Supplemental Notes:
  • ISATA 84, "In Pursuit of Technical Excellence". Proceedings Volume 1. International Symposium on Automotive Technology and Automation with particular reference to Vehicle Management Systems and Flexible Manufacturing Systems, Milan, Italy 24-28 September 1984.
• Corporate Authors:

  Automotive Automotion Limited

  42 Lloyd Park Avenue
  Croydon CRO 5SB, Surrey,   England 

  Alfa Romeo Auto SpA

  Milan,   Italy 
• Authors:
  • DEMIC, M
  • Milan, M
  • Milan, D
• Conference:
  • ISATA 84, "In Pursuit of Technical Excellence". Proceedings Volume 1. International Symposium on Automotive Technology and Automation with particular reference to Vehicle Management Systems and Flexible Manufacturing Systems, Milan, Italy 24-28 September
• Publication Date: 1984

Media Info

• Features: Figures; References;
• Pagination: p. 761-775

Subject/Index Terms

• TRT Terms: Comfort; Driving; Fuel conservation; Handling characteristics; Noise; Standardization; Tires; Vehicle performance
• Old TRIS Terms: Nonuniformity
• Subject Areas: Energy; Environment; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00399923
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: ISATA 84046, HS-038 463
• Files: HSL, USDOT
• Created Date: Oct 31 1985 12:00AM