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国外公司轮胎设计

2011-10-24 10页 ppt 2MB 45阅读

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国外公司轮胎设计nullnullNew Concept High Aspect Low Profile (HALP) Tyre/Rim System --- Background Concept Description Applications Current Status Forward ActionPresentation Title and Agenda nullThe trend towards low profile tyres and large diameter rims continues… The trend is d...
国外公司轮胎设计
nullnullNew Concept High Aspect Low Profile (HALP) Tyre/Rim System --- Background Concept Description Applications Current Status Forward ActionPresentation Title and Agenda nullThe trend towards low profile tyres and large diameter rims continues… The trend is driven by two major reasons: 1. Performance Better Handling and Stability As seen on high performance cars 2. Appearance Appealing to the consumer as a custom upgrade As seen on luxury vehicles and SUVs However, there is a performance trade off…BackgroundFor performanceFor appearancePresentation Title and Agenda nullUsing lower profile tyres has the following disadvantages: 1. Ride Comfort Harsher ride More road noise 2. Decreased Load Carrying Capacity 3. Road Hazard Durability More prone to impact damage (i.e. potholes) The HALP concept was invented for the SUV or luxury vehicle owner who wants a low profile appearance without the sacrifice in ride comfort.BackgroundLow profile tyres have serious disadvanges for a vehicle like this Ford F150.These disadvantages are acceptable for a high performance vehicle. However, they are less acceptable for SUV and luxury vehicle owners. Presentation Title and Agenda nullConcept DescriptionRide comfort of a high aspect ratio tyreLoad capacity of a high aspect ratio tyreHandling of a low profile tyreAppearance of a low profile tyreHALP =Presentation Title and Agenda nullConcept DescriptionHALP ConceptConventional Rim and TyrePresentation Title and Agenda nullConcept DescriptionGap between tyre and flange extension permits vertical tyre deflection (for ride comfort).The flange extension increases the perceived diameter of the rim for a low profile appearance. It also restricts lateral displacement of the tyre (for improved limit handling).The tyre is mostly conventional but has a raised rim protector and increased area of flange rubber.Tyre volume is maintained for improved load capacity over a low profile tyre.Presentation Title and Agenda nullConcept AppearanceConventional 20” RimHALP with 22” appearancePresentation Title and Agenda nullRim ConfigurationsHALP ConceptKETC will work a rim manufacturer to develop the best HALP rim design.Potential rim designsPresentation Title and Agenda nullRim ConfigurationsRim functionality: The rim (1) must permit easy mounting of the tyre. The removable flange extension (2) is bolted on to the rim after tyre mounting. The dimension of the gap between tyre and flange extension will be tuned based on performance testing.Presentation Title and Agenda nullApplicationsAftermarket: For the discerning customer wants improved ride comfort for their luxury vehicle or SUV, or needs more load capacity, such as for towing.OE Specification: HALP may be very attractive to OE customers. It will relieve pressure on the suspension designers who seek to achieve the best balance of ride and handling.The Infiniti FX45 set an industry precedent by having optional 20” rims, however it was criticized for its harsh ride. HALP would fix this problem.The owner of this GMC Denali has equipped it with 22” aftermarket rims. The maximum gross weight of this vehicle is 3256 kg. The tyre load limit is 3300 kg if equipped with 285/30R22 101W tyres. With improper load distribution, such as when towing, the rear tyres could be overloaded. HALP would fix this problem. Presentation Title and Agenda
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