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against a perfectly round test wheel. As the wheel turns, it turns the tire, and the tire carcass undergoes repeated deformation and recovery as it enters and exits the contact area. If we measure the lateral force between the tire and the wheel we will see zero change as the tire turns. If we now
125:
Consider a good tire with LFV of 4 pounds. This tire will induce a 4 pound force sideways into the vehicle every rotation. The frequency of the force will increase in direct proportion to rotating speed. This effect will influence the steering of the vehicle. Tire makers test tires at the point
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is a property of a tire that characterizes its dynamic behavior of these forces. High values of LFV for a given tire reflect a high level of manufacturing variations in the tire structure that will impart ride disturbances into the vehicle in the lateral, or steering, direction. LFV is measured
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LFV is a complex waveform. It is expressed using several standard methods, including peak-to-peak, first harmonic, second harmonic, and higher-order harmonics. In production LFV testing these are reported as both magnitudes and angles.
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of manufacture to verify that the LFV is within allowable quality limits. Tires that exceed these limits may be scrapped or sold to markets that do not require stringent quality.
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LFV can best be explained by example. Assume a perfectly uniform tire mounted on a perfectly round wheel loaded with a constant
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Tires provide for steering, traction, braking, and load support by transmitting forces between the vehicle and the road.
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test a typical production tire we will see the lateral force vary as the tire turns.
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in ASTM F1806 – Standard
Practice for Tire Testing.
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793:This article about an automotive technology is a
54:but its sources remain unclear because it lacks
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167:http://www.freepatentsonline.com/3946527.html
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699:European Tyre and Rim Technical Organisation
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85:Learn how and when to remove this message
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102:according to processes specified by the
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783:
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742:Uniform Tire Quality Grading (UTQG)
797:. You can help Knowledge (XXG) by
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785:
765:
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598:Tire-pressure monitoring system
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588:Central Tire Inflation System
99:Lateral force variation (LFV)
849:Automotive technology stubs
709:Tire Science and Technology
229:Low rolling resistance tire
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780:
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40:This article includes a
550:Slip (vehicle dynamics)
507:Lateral Force Variation
457:Pacejka's Magic Formula
437:Cold inflation pressure
69:more precise citations.
18:Lateral Force Variation
646:List of tire companies
517:Traction (engineering)
512:Radial Force Variation
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497:Tire load sensitivity
112:
477:Self aligning torque
113:Force variation axes
603:Tire-pressure gauge
239:Michelin PAX System
641:Tire manufacturing
472:Rolling resistance
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104:ASTM International
42:list of references
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467:Relaxation length
344:Formula One tyres
130:Waveform analysis
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16:(Redirected from
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782:
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760:Outline of tires
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573:Tire maintenance
522:Treadwear rating
432:Circle of forces
354:Continental tire
294:Orange oil tires
284:Mud-terrain tire
264:All-terrain tire
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65:this article by
56:inline citations
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502:Tire uniformity
462:Pneumatic trail
452:Ground pressure
447:Cornering force
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387:Siping (rubber)
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329:Motorcycle tyre
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155:Traction circle
145:Cornering force
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46:related reading
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719:Identification
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681:Ozone cracking
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487:Steering ratio
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299:Whitewall tire
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161:External links
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50:external links
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578:Tire rotation
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442:Contact patch
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304:Aircraft tire
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234:Run-flat tire
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219:Tubeless tire
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799:expanding it
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704:Tire Society
618:Tire changer
613:Bead breaker
583:Bicycle pump
492:Tire balance
402:Presta valve
397:Dunlop valve
339:Racing slick
334:Tractor tire
319:Tubular tire
314:Bicycle tire
244:Airless tire
133:
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61:Please help
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732:Plus sizing
656:Waste tires
608:Direct TPMS
593:Tire mousse
565:Maintenance
540:Aquaplaning
309:Tundra tire
289:Paddle tire
274:Knobby tire
224:Radial tire
67:introducing
838:Categories
737:Tire label
633:Life cycle
555:Tramlining
482:Slip angle
419:Attributes
392:Valve stem
364:Components
349:Spare tire
279:Large tire
75:April 2021
727:Tire code
676:Flat tire
666:Tire fire
623:Tire iron
532:Behaviors
324:Lego tire
259:Snow tire
254:Rain tyre
770:Category
377:Beadlock
269:Bar grip
139:See also
671:Blowout
651:Retread
63:improve
844:Tires
382:Tread
249:Tweel
211:Types
203:Tires
119:force
48:, or
795:stub
372:Bead
840::
52:,
44:,
826:e
819:t
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195:e
188:t
181:v
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82:(
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73:(
59:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
