Heat Buildup Prevention in Tires

Non-pneumatic electric wheel with integrated motor and temperature control for electric vehicles. The wheel has a hub, spokes, rim, tread, motor, and two shells. It uses a unique cooling system to maintain optimal motor and tire temperatures. The wheel has a heat dissipation module inside the inner shell. A heat sink attached to the motor transfers heat to a cooling fluid. The outer shell has vents to exhaust the hot fluid. The cooling system also has a thermostat to regulate temperature. When the motor gets too hot, the thermostat closes a valve to restrict fluid flow. When the motor cools, the valve opens. The wheel also has a tire pressure sensor to monitor tire temperature. If the tire gets too cold, a heating element inside the rim warms it. The wheel's unique design allows integrated temperature control for both the motor and tires.

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System to warm up all driven wheels of all-wheel-drive vehicles for better tire performance by using line-lock mode. The system involves a controller that selectively brakes and powers the wheels in a specific sequence to warm them up. This involves braking one wheel while powering the opposite wheel and then swapping to brake the other wheel and powering the first wheel. The controller alternates braking and powering the wheels in phases to warm them up.

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Method for controlling tire temperature in vehicles using circulating liquid and gas paths to heat or cool tires. The method involves detecting ambient temperature, tire temperature, and vehicle conditions like speed and pressure to decide whether to heat or cool tires. It uses a liquid treatment module to circulate heated/cooled fluid through the tires for temperature control, and a gas treatment module to circulate heated/cooled gas through the tires. This bilateral control using liquids and gases allows more efficient and flexible tire temperature regulation compared to just relying on ambient air or external heat sources.

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A pneumatic tire that exhibits excellent grip performance and durability during high-speed running, and also improved fuel efficiency. The tire achieves this by having tread regions with different thermal conductivities. These regions are made of rubber compositions with high and low thermal conductivity. The high thermal conductivity composition dissipates heat generated during high-speed running, preventing overheating and maintaining grip. The low thermal conductivity composition retains heat and provides durability.

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Automatically controlling tire temperature using a liquid circulation system with a heating/cooling module. The system circulates a heat exchange fluid between the tires and a module to heat or cool the tires. This avoids external fluid leaks affecting tire performance. The module state is controlled based on tire temperature and a target range. This enables automated tire temperature control without external liquid spraying.

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Rubber composition for tire treads that have low rolling resistance and heat generation while maintaining high wear resistance. The composition includes a diene-based rubber, a filler like carbon black or silica, and a specific hydrazide compound additive. The hydrazide compound enhances the interaction between the rubber and filler for improved properties.

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Tire temperature control and pressure stabilization method for vehicles using thermoelectric refrigeration and hanging hub generator technology. The method involves using a thermoelectric cooling/heating system inside the tire to actively regulate tire temperature. A temperature sensor detects tire temperature during driving, which is fed to a controller that operates thermoelectric cold and hot fins. The vehicle's kinetic energy is also harnessed through a suspended hub generator to provide power for the fins and stabilize tire pressure. This allows rapid and efficient temperature control without relying on manual tire pressure checks.

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A tire with enhanced durability during high-speed running. The tire has a sidewall made from a thermoplastic elastomer with a specific heat capacity of 1.7 J/(g·K) or less. The sidewall also has depressions or projections between the tread ground contact edge and the tire's maximum width position.

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Rubber composition for tire sidewalls, inner liners, and other rubber tire components provides improved heat aging resistance compared to conventional rubber compositions. The composition contains a compound, such as 3,4-dihydroxycinnamic acid, that acts as an antioxidant to prevent oxidation deterioration of the rubber.

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Pneumatic tire design with a tread rubber that reduces noise without sacrificing durability. The tire has an inner tread rubber with a lower loss tangent than the outer tread rubber. The lower loss tangent reduces heat buildup in the tread while still allowing the noise-damping properties of the inner rubber to be effective. This prevents excessive heat buildup in the tread which could degrade durability.

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Rubber composition for improved wear resistance and low heat generation in tires, achieved by using a specific combination of carbon blacks. The composition contains natural rubber, butadiene rubber, and carbon black at a specific content range. The key is using three types of carbon black with different surface areas and transmittance. The composition includes carbon black A with a specific surface area and transmittance.

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A tire rubber composition for heavy-duty tire treads that improves low heat generation and modulus properties. The composition contains a diene rubber with a tin-modified polybutadiene rubber, carbon black, silica, an amino group-containing compound, and a silane coupling agent. The composition has reduced carbon black and increased silica compared to previous compositions.

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Rubber composition for tires and other rubber products that balances low-strain and high-strain hysteresis losses. The composition includes a rubber component and specific compounds containing alkali or alkaline earth metals. These compounds improve the balance between low-strain and high-strain hysteresis losses, reducing heat generation while maintaining durability in applications like tires.

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Masterbatch manufacturing method to improve rubber properties and tire manufacturing method using the masterbatch. In masterbatch manufacturing, carbon black is in a slurry using a surfactant having an aromatic ring. This slurry is mixed with rubber latex and then coagulated to form a high-dispersion carbon black crumb. This improves the rubber's rupture strength and heat generation reduction when vulcanized. The tire manufacturing uses this masterbatch to prepare the rubber compound for the tire, leading to improved tire performance.

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A non-pneumatic tire design that addresses key challenges and enables high-performance non-pneumatic wheels for vehicles. The design features an optimized ratio of beam volume to surface area, beam thickness relative to wheel diameter, openings in the beam, reduced crack propagation susceptibility, and other characteristics to improve thermal management, impact resistance, and durability compared to existing non-pneumatic tires.

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Rubber composition for construction vehicle tires that reduces heat buildup while maintaining durability. The composition contains a specific hydrazide compound, zinc oxide, and carbon black mixed with diene rubber. Mixing conditions are optimized.

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Process and system to manufacture high self-sealing tires using an automated, precision process that provides a layer of high molecular organic material on the tire's inner liner. The process includes cleaning the tire, spraying heated self-sealing material on the inner liner, and forced cooling. The cleaning involves soaking, scrubbing, rinsing, rotating, and air drying. The spraying uses an accelerated rotating tire and heated material. The forced cooling uses directed air to rapidly cool the sprayed material.

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A modified conjugated diene rubber that can be used in rubber compositions for tires that provide low rolling resistance, high wet grip, and improved durability. The modified rubber is made by end-capping a conjugated diene polymer chain with a siloxane compound. This end-capping with siloxane functional groups enhances compatibility with silica fillers, reduces heat buildup, improves wet grip, and provides excellent operation stability.

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Automatically adjusting tire pressure in vehicles to improve safety and efficiency by using a system with a semiconductor refrigerating sheet, temperature and pressure sensors, and an energy storage device. The system generates electricity by heating or cooling the sheet based on tire and ambient pressure and temperature differences. This powers the storage device to maintain proper tire pressure without manual intervention. The sheet's thermoelectric effect enables fast and autonomous pressure regulation.

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Tire tread composition to reduce the increase in hardness and decrease in wet grip from before to after heat aging. The tread contains a blend of styrene elastomer and urethane particles.

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