Improve Tire Performance on Wet Road Conditions

Anti-aquaplaning system for vehicles that uses compressed fluid to prevent wheel lift and improve traction on wet roads without the bulk, weight, and power consumption of high-pressure pumps. The system has an accumulator that stores compressed fluid and an injector to release it onto the road in front of the wheel. The compressed fluid provides high injection pressure and rapid response time for effective anti-aquaplaning performance. The accumulator compresses a gas like nitrogen to store the compressed fluid, eliminating the need for a high-pressure pump.

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Tire tread compounding and design for improved wet grip and chipping resistance on snow and wet roads at low temperatures. The tread has a lateral groove with deep depth that drains water well. The rubber composition uses an isoprene-based rubber and styrene-butadiene rubber mix to dissipate energy and prevent chipping. The rubber compound has a silica filler with small particle size and a silane coupling agent to improve dispersibility. The tread thickness, lateral groove depth, and brittleness temperature are optimized to balance wet grip and chipping resistance.

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Tire design with improved wet and dry performance. The tire has a tread profile with specific main groove width ratios to balance wet grip and dry steering stability. The outer shoulder main groove is wider than the inner center main groove. The inner shoulder main groove is wider than the inner center main groove. This configuration allows the center land portion to bulge towards the outer side, increasing ground contact pressure for better wet traction. The narrower inner center groove maintains rigidity for dry steering. The wider inner shoulder groove aids drainage.

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Rubber composition and cross-linked rubber with improved properties for tire applications. The rubber composition contains a specific copolymer made by cross-metathesis of cyclic alicyclic monomers like norbornene and cyclopentene, along with conventional fillers. This copolymer structure provides enhanced fracture resistance, wet grip, and reduced heat buildup compared to other cross-linked rubbers. The composition can be prepared by cross-metathesis polymerization followed by compounding with fillers.

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Pneumatic tire design with improved uneven wear resistance and wet traction. The tire has specific features in the shoulder and center regions. The center land portion has multiple center lug grooves with blocks between them. The middle land portion has multiple middle lug grooves, blocks, a notch on the center groove side of each block, and a middle sipe extending from the notch to the shoulder side. This configuration helps prevent uneven wear and improves wet traction by providing interconnected sipes and lugs that can channel water and provide biting edges.

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ABSTRACT Significant advancements in developing highperformance, sustainable tyre tread compounds have been achieved through the strategic integration of modified silica into carbon black (CB)/thermally exfoliated graphite hybrid filler systems. While benefits fillers such as CB, graphite, and are recognized, limited understanding their interaction mechanisms with polymer chains has hindered widespread adoption. This study investigates mechanical, thermal, dynamic mechanical properties an ecofriendly, green compound, focusing on both binary (CB/silica) ternary (CB, graphite/modified silica) The key aspect this research is utilization prepared by latex imprinting technique along epoxidized natural rubber (ENR) a compatibilizer to enhance between NR matrix. partial replacement CB thermally novel lateximprinted enhanced surface area provides excellent properties, low rolling resistance, improved wet grip, reduced heat buildup. porosity silica, coupled system, play crucial role reducing hysteresis, resulting resistance (0.0376), grip (0.0796), very buildup (13C). attribu... Read More

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Heavy duty tire with reduced rolling resistance and improved wet performance as the tire wears. The tire has a specific tread design with narrow grooves and sipes that suppresses rolling resistance increase due to wear. The narrow grooves have a radially inner enlarged width portion with wider groove width than the body. The sipes are shallower than the narrow grooves. This allows the enlarged width portion to remain as the body narrows and sipes disappear. It prevents wet performance degradation in the later stages of wear when the enlarged width portion is exposed. The tread has high styrene butadiene rubber and silica content to enable this design.

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Tire with improved dry, wet and snow performance by optimizing groove geometry for steering stability. The tire has a specific mounting direction relative to the vehicle, with innermost groove having equal wall angles on both sides and outer grooves having smaller inner wall angles. This enhances drainage and snow shedding from the innermost groove while maintaining steering stability on all surfaces. The smaller inner wall angles on outer grooves prevent excessive turning resistance on wet or snowy roads.

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A pneumatic tire with improved wet and snow performance by optimizing the tread pattern. The tire has alternating pairs of asymmetrically inclined main grooves extending from the ground contact edge to the equator. These form staggered land portions extending from the equator to the ground. The innermost blocks in each land have notches opening to the main groove connections, improving drainage. This pattern provides enhanced snow traction, braking, and wet grip compared to traditional symmetrical treads.

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A tire design with improved wet braking performance and steering stability while reducing rolling resistance compared to traditional tires. The tire has circumferential blocks separated by circumferential grooves. The blocks have chamfered edges at the inner and outer ends of the lateral grooves. These chamfered edges provide drainage channels for water evacuation during braking. The chamfer angles and relative sizes of the chamfers optimize wet performance and steering stability without excessive rolling resistance.

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Rubber composition for tire treads that balances wet traction, rolling resistance, and snow performance. It uses a specific combination of elastomers, fillers, resins, curing agents, and accelerators. The elastomer blend includes low-cis polybutadiene, functionalized styrene-butadiene rubber, and high-cis polybutadiene. Silica filler with a blocked mercapto silane coupling agent, hydrocarbon traction resin, and a substituted phenol aldehyde tackifying resin complete the composition.

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Rubber composition for tire treads that provides improved wet performance, rolling resistance, and snow traction compared to traditional tire tread compounds. The composition contains a specific blend of elastomers, fillers, resins, and curing agents. The elastomer blend includes a low styrene content SBR with a low glass transition temperature, along with polybutadiene. The SBR has functional groups for improved adhesion to silica filler. The composition also contains a blocked mercapto organosilane coupling agent for better silica bonding. This combination provides a balance of wet traction, rolling resistance, and snow traction for all-season and winter tires.

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Tire tread rubber composition that improves wet braking, wear, and snow braking performance while maintaining fuel efficiency. The composition contains specific amounts of liquid polybutadiene, aluminum hydroxide, and vulcanizing agent relative to the total rubber. Using these optimized levels provides a tire compound that dramatically enhances wet grip, wear resistance, and snow traction compared to conventional rubber formulations.

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<div>This study introduces an innovative intelligent tire system capable of estimating the risk total hydroplaning based on water pressure measurements within tread grooves. Dynamic represents important safety concern influenced by depth, design, and vehicle longitudinal speed. Existing systems primarily assess using wedge effect, which occurs predominantly in deep conditions. However, shallow water, is far more prevalent real-world scenarios, effect absent at higher speeds, could make existing unable to reliably risk. Groove flow a key factor dynamics, it governed two mechanisms: interception rate pressure. In both cases, groove will increase as result increasing speed for constant depth. Therefore, grooves also approaches critical Unlike conventional systems, proposed design utilizes amplitude shape measured signals from Experimental results indicate that peak increases with hydroplaning. Furthermore, overall signal be By addressing limitations current offers robust solution real-time estimation across diverse driving conditions.</div>

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Tire rubber composition and pneumatic tire with significantly improved overall performance in terms of wet grip and fuel economy. The rubber composition has a tan delta vs temperature curve with a peak tan delta and half width satisfying a specific relationship (0.025 or greater). This curve shape provides both enhanced wet grip due to the high peak tan delta and improved wet grip and fuel economy due to the sharp curve. The composition can contain modified BR, silica, silane coupling agents, wax, antioxidants, oil, zinc oxide, sulfur, and accelerators.

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To investigate the influence of pavement texture on tire hydroplaning, this study utilized laser scanning to capture surface characteristics three asphalt mixturesAC-13, SMA-13, and OGFC-13across fifteen rutting plate specimens. Three-dimensional (3D) models were reconstructed incorporate realistic data. Finite element simulations, employing fluid-structure interaction explicit dynamics in Abaqus, conducted model tire-water-pavement interactions. The results indicate that anti-skid performance ranks as OGFC > SMA AC. However, despite exhibiting comparable metrics (e.g., pendulum friction value mean depth), OGFCs superior uniformity significantly better hydroplaning resistance. Additionally, tread depth critically influences speed. A novel Anti-Slip Comprehensive Texture Index (ACTI) was proposed evaluate uniformity, providing a more comprehensive assessment performance. These findings underscore importance enhancing safety under wet conditions.

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Tire tread design that maintains ride comfort and wet performance as the tread wears. The tread has a main groove with recessed sections that push water away from the tire contact patch. The recessed sections have a specific ratio of depth to groove width when worn versus new. The ratio is 1.05-1.40 for sea ratio and 0.95-1.04 for hardness ratio. This prevents excessive wear and keeps ride comfort and grip as the tread wears. The recessed sections are alternating on the groove walls. The tread also has a specific rubber composition that changes less with aging.

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Heavy duty pneumatic tire with improved wet traction and wear resistance. The tire has a zigzagging crown circumferential groove and a zigzagging shoulder circumferential groove. Adjacent crown lateral grooves connect the crowns to shoulders. The crown blocks have smaller sub-grooves with fewer, shorter transverse grooves compared to the wider lateral grooves. This configuration provides enhanced wet traction from the zigzagging main grooves, while the smaller sub-grooves prevent excessive wear.

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Modifying conjugated diene-based polymers like styrene-butadiene rubber (SBR) to improve properties like wet grip, low rolling resistance, and processability. The modification involves reacting the polymer with a specific modifier containing a functional group derived from a compound represented by formula 1: R1-R6 are alkoxy groups, A is an arylene or heteroarylene ring, and L1-L4 are alkylene chains. The modifier has affinity with fillers like silica and improves compounding properties.

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Rubber composition for tires that provides improved wet grip, wear resistance, and low heat degradation compared to conventional tire rubbers. The composition contains specific amounts of silica, surface-treated aluminum hydroxide, styrene-butadiene copolymer, liquid SBR, tackifier resin, and optionally a silane coupling agent. The silica has a nitrogen adsorption specific surface area (N2SA) of 100-300 m2/g and a N2SA/CTAB specific surface area (SSA) of 1.10 or less. The surface-treated aluminum hydroxide improves wet grip. The styrene-butadiene copolymer with high styrene content provides wear resistance. The liquid SBR with high vinyl content and unmodified tackifier resin enhance wet grip. The composition also contains a sil

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