国外公司轮胎设计

1、The trend towards low profile tyres and large diameter rims continuesThe trend is driven by two major reasons:1. PerformanceBetter Handling and StabilityAs seen on high performance cars2. AppearanceAppealing to the consumer as a custom upgradeAs seen on luxury vehicles and SUVsHowever, there is a pe

2、rformance trade offBackgroundFor performanceFor appearancePresentation Title and AgendaUsing lower profile tyres has the following disadvantages:1. Ride ComfortHarsher rideMore road noise2. Decreased Load Carrying Capacity3. Road Hazard DurabilityMore prone to impact damage (i.e. potholes)The HALP c

3、oncept 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

4、 less acceptable for SUV and luxury vehicle owners. Presentation Title and AgendaConcept 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 AgendaConcept DescriptionHAL

5、P ConceptConventional Rim and TyrePresentation Title and AgendaConcept 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 displac

6、ement 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 AgendaConcept AppearanceConventional 20” RimHALP with

7、 22” appearancePresentation Title and AgendaRim ConfigurationsHALP ConceptKETC will work a rim manufacturer to develop the best HALP rim design.Potential rim designsPresentation Title and AgendaRim ConfigurationsRim functionality: The rim (1) must permit easy mounting of the tyre. The removable flan

8、ge 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 AgendaApplicationsAftermarket: For the discerning customer wants improved ride comfort for their luxury vehicle o

9、r 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

10、, 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 AgendaRim ConfigurationsRim functionality: The rim (1) must permit easy mounting of the tyre. The removable flange extension (2) is bol