Reduce Tire Road Wear Emissions

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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Retreading is a cornerstone in the remanufacturing process of tires, facilitating extraction maximum kilometers (Km) from tire carcass. Tire plays crucial role conserving raw materials, reducing environmental impacts, and lowering overall operating costs. This study employs predictive modeling techniques to forecast performance optimize resource allocation, departing traditional approaches, for bus transport system India. Machine learning models, including linear regression, ensemble boosted trees, neural network were used. Two scenarios devised: Scenario I addressed premature failures optimizing reduce procurement II used targeted interventions, such as eliminating new condemnations retread (RT) strategies, could potentially salvage 169 tires retirement. The results achieved R2 values 0.44, 0.51, 0.45 improved test datasets 0.46, 0.52 0.44. By leveraging these decision-makers can substantially improve mileage, condemnations, increase production, drive cost savings fleet operations. Notably, this approach contributes enhanced operational efficiency promotes sustainability by cutting ... Read More

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A braking control system for vehicles with regenerative braking and friction braking that balances tire wear and fuel efficiency. The system dynamically distributes braking force between regenerative and friction brakes based on factors like tire temperature and road conditions. During braking, if the front wheel temperature exceeds a threshold, it reduces the amount of regenerative braking and increases friction braking to prevent excessive tire wear. This avoids concentration of forces on the wheels that can cause accelerated wear and dust generation. The system also recommends routes with lower braking requirements to further mitigate tire wear.

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Using carbon nanotubes called Molecular Rebar in rubber compounds to improve tire durability and reduce environmental impact. The carbon nanotubes bind with the polymer matrix, improving wear resistance without detrimentally affecting rolling resistance, and reducing overall environmental concern over antiozonants in the tire. The nanotubes halt microcracks that form from ozone exposure, allowing use of less antizoonant or safer alternatives without increased tire failure. The nanotubes also slow antizoonant migration from the rubber.

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Optimizing control signals used in operating a vehicle to improve performance, efficiency, and wear while balancing conflicting objectives. The optimization involves iteratively replacing optimal values of individual control signals in sequences while measuring associated parameters. Confidence intervals are calculated to determine causal relationships between control signals and parameters. This allows identifying the best control signals for desired parameter values. By using these optimized signals, the vehicle can be operated to causally affect parameters. The iterative replacement and parameter measurement process is repeated to further refine the control signals.

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Tire-road wear results in particulate emission, which can either accumulate at the contact interface or be released into environment. While previous research has focused on collection and characterization of Tire-Road Wear Particles (TRWP), offering valuable insights their properties, less is known about tribological mechanisms governing TRWP generation subsequent modifications to tire-road conditions. A novel methodology introduced that integrates laboratory testing with particle analyze dynamics generation. pin-on-disc tribometer, housed an isolated chamber, was used replicate conditions a reduced scale. An Electrical Low Pressure Impactor (ELPI) system collect characterize airborne particles generated during testing. The findings provide important relationship between corresponding emissions. Results are presented terms evolution coefficient friction, morphology, number concentration. morphology evolves throughout test, increasing from approximately 50 m initial stage 500 later stages. concentration 0.64 size range decreases significantly, 1.9 particles/cm 0.08 stage, repre... Read More

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Tyres for vehicles with improved grip, wear resistance, and low weight. The tyres contain a rubber matrix with functionalized carbon nanoparticles like graphene and carbon nanotubes. The functionalization improves dispersion of the carbon nanoparticles in the rubber. This provides better grip, structural and chemical properties, and abrasion resistance compared to unfunctionalized carbon nanoparticles. The functionalization involves treating the carbon nanoparticles with chemicals like nitric acid to modify their surface.

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A system for optimizing tire inflation by calculating personalized target pressures based on factors beyond just the default value. The system involves vehicles calculating profile-based target pressures for tires using data like tire make, history, vehicle use, and environment. The target pressures are then wirelessly transmitted to devices like tire fillers or user devices to inflate the tires to the calculated optimal pressures. This customized tire pressure management goes beyond just default values to provide better tire performance and longevity.

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Additive composition for improving properties of silica-filled rubber compounds in tires, such as fuel economy, traction, and wear resistance. The composition comprises a reaction product of fatty acid and polyamine. It is added to silica-filled rubber compounds, like tire treads, at low parts per hundred (phr) levels. The additive enhances silica dispersion and reduces payne effect, without affecting key rubber properties like viscosity, scorch, hardness, tensile strength, elongation, abrasion, and modulus. This enables improved tire performance, including lower rolling resistance, enhanced winter/dry traction, and better dry handling, without compromising other properties.

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Rubber composition for truck tires with improved rolling resistance and wet grip while maintaining wear resistance. The composition contains 70-95 phr of polyisoprene and 5-30 phr of a low Tg SBR functionalized for silica coupling. It also has 40-80 phr of predominantly silica filler. This combination provides a balance of wear, wet, and rolling resistance properties for reduced environmental impact and safety in truck tires.

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<div class="section abstract"><div class="htmlview paragraph">As global warming and environmental problems are becoming more serious, tires required to achieve a high level of performance trade-offs, such as low rolling resistance, wet braking performance, driving stability, ride comfort, while minimizing wear, noise, weight. However, predicting tire wear life, which is influenced by both vehicle characteristics, technically challenging so practical prediction method has long been awaited.</div><div paragraph">Therefore, we propose an experimental-based life using measured characteristics the volume formula polymer materials. This achieves accuracy for use in early stages development without need time-consuming costly real tests. improved quietness compliance with dust regulations due electrification requires accuracy, leading increase cases requiring judgment through tests.</div><div paragraph">To address this technical issue, our new model introduces characteristic factors that affect specifically toe angle camber suspension alignment. Furthermor... Read More

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Rubber composition manufacturing method, tire manufacturing method, and rubber composition manufacturing apparatus that improve wear resistance and reduce heat generation in tires. The rubber composition is made by kneading a rubber component, silica, and a silane coupling agent in two chambers with rotors. Compressed gas is delivered to the second chamber during kneading. This allows better dispersion of silica without flocculation. It also reduces heat buildup during kneading. The compressed gas is delivered through a hole in the second chamber wall.

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Rubber composition for tire treads that improves wear resistance. The composition contains modified and unmodified butadiene rubbers in specific proportions along with carbon black with specific physical properties. The modified butadiene rubber content is 5% or more and the unmodified butadiene rubber content is 10% or more. The carbon black has a cetyltrimethylammonium bromide adsorption specific surface area (CTAB) of 130 m2/g or more, a CTAB/iodine adsorption ratio of 0.92 to 1.06, and a hydrogen release amount of 3,500 to 4,800 mass ppm. Using this composition in tire treads provides improved wear resistance compared to conventional tread rubber compositions.

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Rubber composition that improves wear resistance and chipping resistance. The composition includes silica and zinc oxide, which have a specific relationship between CTAB specific surface area and DBP oil absorption, into rubber including isoprene rubber.

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Wear-resistant tire rubber compound composition and preparation method that improves tire wear resistance by optimizing silica dispersion and rubber-silica interface adhesion. The method involves two-step modification of silica using a silane coupling agent and an active dispersant. The silane is dry-mixed with silica, heated to adsorb and hydrolyze, and the dispersant promotes uniform grafting. This reduces silica agglomeration, improves dispersion, and enhances rubber-silica bonding for better wear resistance.

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Rubber composition and tire design to reduce wear during low-speed applications like stop-and-go driving. The rubber composition contains a specific blend of isoprene, butadiene, and styrene-butadiene rubbers, along with a filler mix of fine carbon black and silica. The carbon black has an average particle size of 19 nm or less. This composition provides improved wear resistance when a high contact force is applied for long times at low speeds. The tire design incorporates this rubber compound into the tread layers. It includes a top layer with the specific rubber blend, sandwiched between inner layers. This configuration helps prevent premature wear during stop-and-go driving conditions.

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A tire with improved wear resistance at high speeds. The tire has a specific composition for the tread rubber, with controlled amounts of polymer and ash, along with a maximum thickness on the equatorial plane. The polymer content (PC) is 55% by mass, the ash content (Ash) is 25% by mass, and the equatorial plane thickness (G) is 10 mm or less. This combination improves wear resistance during high-speed running compared to conventional tires.

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A dry mixing method for tire rubber compositions with reduced rolling resistance and improved wear resistance. The method involves pre-dispersing white carbon black before adding it to the rubber. This improves white carbon black dispersion and modification by pre-processing. It can be mixed with carbon black masterbatch to reduce hysteresis loss. Using pre-dispersed white carbon black in tire tread rubber reduces rolling resistance while maintaining wear resistance.

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Heavy duty pneumatic tire with improved wear resistance for trucks and buses. The tire has a tread made with a specific rubber composition containing carbon black with high surface area, small particle size, and specific additives. The rubber composition has a carbon black with an average particle size of 20 nm or less and a cetyltrimethylammonium bromide (CTAB) adsorption specific surface area of 100 m2/g or more. It also has a land ratio of 81% or more in the tread. This composition helps achieve a wear resistance figure of merit of 140 or more. The tire provides better wear life compared to conventional heavy duty tires.

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Tire with improved wear resistance and adhesion compared to conventional tires. The tire has a tread with hard granules embedded in the wear surface. The granules are treated with low-temperature plasma to enhance adhesion to the tread. An adhesive is applied to the tread strip before the granules are added. This sequence of treating the granules, applying adhesive, and embedding them improves adhesion compared to adding granules directly to the tread.

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