Tire Energy Recovery

System for generating electric power to charge the battery of a vehicle using shockwaves generated by the tires when the vehicle is in motion. The system involves mounting electric generators on the vehicle's tires or suspension to capture the vibrations, road irregularities, and acceleration forces as shockwaves. These shockwaves are then used to generate electric power that is transferred to the vehicle's battery for charging. The system allows vehicles to harvest energy from the road without relying solely on external charging stations or regenerative braking.

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Adaptive control system for vehicles that uses real-time tire and environmental data from hybrid wireless tire sensors (HWTS) to improve vehicle performance and safety. The HWTS, powered by energy harvesting or rechargeable batteries, provide continuous tire pressure, temperature, deformation, wear, speed, slip, and vibration data to the vehicle's processor. This data is used to adapt following distance, cruise control speed, and braking actuation based on tire conditions. It also compensates wheel motors to apply preferred torque to tires based on real-time data. This leverages tire condition feedback to optimize vehicle operation compared to fixed setpoints.

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Integrating durable sensors into building materials like concrete or vehicle components like tires to monitor changes in material properties over time without needing human inspection. The sensors are embedded in the materials or placed on surfaces and are made from carbonaceous microstructures. They respond to electromagnetic stimuli and resonate at frequencies indicative of the material state. Shifts in resonance frequencies can reveal material wear, deformation, or aging. The sensors can be charged by triboelectric generators in tires for self-powered monitoring.

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Roadbed tribological energy (RTE) is a promising recoverable resource with an estimated potential on the terawatt scale, generated annually by interaction between tires and road surfaces. However, RTE remains underutilized due to lack of effective harvesting technologies that can address its high-entropy characteristics. Here, we present revolutionary harvester formed freestanding layer triboelectric nanogenerator array embedded in road. The effectively converts low-grade vibratory into electrical energy. It demonstrates achieve peak power 16.409 milliwatts average 2.2 from compact 78square centimeter area under single tire impact, conversion efficiency 11.723%. In addition, developed self-powered intelligent connected transportation system (SP-ICTS), integrating five-in-one array. Experimental findings show meet SP-ICTSs electricity requirements along 1-kilometer segment 50-meter harvester.

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Piezoelectric energy harvesting in roadways can power distributed sensors and electronics by capturing underutilized mechanical from traffic. In this research, 13 stacked piezocomposites were developed evaluated to determine optimal designs for multiple applications. The design of these transducers aimed at operating a multitude scenarios, under compressive loads (110 kN) low-frequency (10 Hz) applications, intended simulate vehicular forces. Power comparison was utilized between numerous the most efficient configuration electromechanical conversion. Design guidelines based on integrity, output power, active piezoelectric volume percentage, aspect ratio, geometric factors. forces applied study reliant average vehicle weight. An intermediate PZT fraction moderate pillar ratios found yield highest output, with composite significantly outperforming monolithic similar size.

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System to recover wasted kinetic energy of vehicle wheels and convert it into electricity to recharge vehicle batteries. The system has a floating rotatable assembly inside a fixed stator that surrounds the wheel. The floating assembly has magnets that interact with magnets on the wheel and stator to generate current in the stator when the floating assembly spins independently of the wheel. This converts wasted kinetic energy from the wheel rotation into usable electrical energy for the vehicle battery.

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Vehicle tire with integrated flexible piezoelectric ribs added to the inside of the tire that generate electric currents when the tire flexes during driving. The piezoelectric ribs are affixed to the spokes inside the tire and connected to a battery charging circuit. This allows capturing waste kinetic energy from tire deformation to recharge the vehicle battery without additional components. The piezoelectric ribs convert mechanical force to electrical charge when the tire flexes. A charge accumulator stores the generated electricity. A switching mechanism decouples the ribs from the accumulator when the tire is stationary to prevent draining the battery. The system can also condition the variable voltage from the ribs to a constant level for efficient charging.

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The growing demand for sustainable and self-powered technologies in automotive applications has led to increased interest energy harvesting from vehicle suspensions. Recovering mechanical road-induced vibrations offers a viable solution powering wireless sensors autonomous electronic systems, reducing dependence on external power sources. This study presents the design, modeling, experimental validation of hybrid energy-harvesting system that integrates piezoelectric magnetoelectric effects efficiently convert into electrical energy. A model-based systems engineering (MBSE) approach was used optimize architecture, ensuring high conversion efficiency, durability, seamless integration suspension systems. theoretical modeling both mechanisms developed, providing analytical expressions harvested as function parameters. designed then fabricated tested under controlled excitations validate models. Experimental results demonstrate achieves maximum output 16 W/cm2 effect 3.5 effect. strong correlation between predictions measurements confirms feasibility this applications.

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A self-powered hydrogen generator that can produce hydrogen fuel from mechanical energy without requiring an external power source. The device uses internal electrical generation to dissociate water into hydrogen and oxygen through electrolysis. It converts rotational energy into electrical energy to drive the electrolysis process. This allows the hydrogen generator to operate solely from mechanical input like a crankshaft or flywheel, without relying on external electrical power.

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Embedding split-ring resonators (SRRs) made of carbonaceous microstructures in vehicle components like tires, bodywork, and landing pads to monitor their properties and conditions. The SRRs respond to electromagnetic stimuli and emit signals that change based on the component's state. This allows detecting tire wear, deformation, and tire-road friction. The embedded SRRs can also charge from triboelectric generators in the tire belts and discharge through resonance. The SRRs can be calibrated and encoded to provide digital wear tracking without electronics.

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Embedding split ring resonators in vehicle components like tires to detect changes in material properties. The resonators are made from carbonaceous microstructures and respond to electromagnetic stimuli. By embedding the resonators in tires, changes in resonant frequency can indicate tire wear, deformation, or damage. The resonators can also detect environmental conditions like water accumulation. The resonator frequencies are based on the material's permittivity and permeability. The embedded resonators can be powered by triboelectric generators in the tire for self-powered sensing.

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Energy harvesting dampers that capture energy from relative motion and provide damping. The dampers contain integrated hydraulic motors and electric generators. In compression, fluid moves through the motor to rotate it and generate electricity. In extension, fluid reverses direction to counter-rotate the motor and generate electricity. Valves restrict fluid flow to unidirectionally spin the motor during both modes. This allows damping while capturing energy.

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A smart wheel rim for vehicles with embedded tire pressure sensors, display, and power generation capabilities. The rim has a built-in tire pressure indicator, an electric power generator, and a wireless connection to the vehicle's tire pressure monitoring system. The generator charges an onboard battery to power the indicator. This allows real-time tire pressure display directly on the rim without needing a separate display in the cabin. It also enables dynamic wheel identification since the sensor and display are integrated into the rim. This eliminates the need for fixed sensors that cannot be swapped between wheels without updating the system. The rim can communicate with the vehicle's tire pressure monitoring system to send and receive tire pressure data wirelessly.

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A retrofit wheel motor that can be easily installed on existing vehicles to improve efficiency and reduce emissions. The motor is integrated into the wheel assembly and has an onboard energy storage module. The motor has a rotor with permanent magnets and a stator with windings. The stator and rotor are spaced by an air gap. The stator is connected to the outer wheel rim and rotates with it. The stator can also rotate relative to the rotor. This allows the motor to capture braking energy and provide acceleration boosts. The storage module is mounted on the stator and interacts with the magnets/windings to receive/transmit energy. This enables onboard energy recovery and storage without needing external components.

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An electric vehicle power generation system that converts the kinetic energy of a vehicle's deforming tires during driving into electrical energy. The system uses linear generators inside the tires that convert the energy from tire deformation due to impacts into electrical energy. This kinetic energy is stored in capacitors and then rectified to charge the vehicle's battery. The system allows recovering energy from tire deformation during driving instead of wasting it.

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Electric energy harvesting tire using studs that generate electricity as they deform in the tire tread. The studs are fixed in grooves and have piezoelectric elements at their bottom. As the studs move with the road, the piezoelectric elements convert the deformation into electrical energy. This harvested energy can be stored and used to power onboard electronics or tire pressure sensors.

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Smart tire with array energy harvesting to provide consistent power for internal sensors and devices without relying on the vehicle battery. The smart tire has piezoelectric modules attached to the inner surface of the tire that generate electricity as the tire deforms during rotation. The modules are connected in parallel arrays around the tire to maximize deformation and power output. The harvested AC voltage is rectified, stabilized, and stored in an energy element. This provides stable DC power for tire sensors and devices.

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Tire self-supply energy-collection charging device that eliminates the risk of car energy loss, power consumption burden and personnel's mileage anxiety, increases duration, and optimizes personnel experience of going on a journey. The device includes a PVDF piezoelectric film, a magnetostrictive material, a tire air-tight layer, a rim and a tire cover, and is arranged in the tire airtight layer, the strength relation among materials of the tire body reinforcing layer is not damaged, the driving operation of personnel is not influenced, and the potential safety hazard of personnel going out is reduced.

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Tire with integrated power generation capability that can generate electricity from road vibrations and pressure changes when the vehicle is driving. The tire has multiple separated power generation modules like piezoelectric, electromagnetic induction, or magnetostrictive devices. These modules convert the tire's dynamic motion into electrical energy without external power. The generated electricity can be used to charge the vehicle battery, power onboard sensors, or store energy in a capacitor.

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An electric vehicle (EV) charging system that uses piezoelectric elements embedded in the tires to generate electrical charge during vehicle motion. The piezoelectric elements compress as the tire rolls, creating a time-varying voltage. A capacitor connected to the elements stores the charge. A discharge circuit connects the capacitor to a coil embedded in the tire. This discharges the capacitor into the coil, creating a time-varying magnetic field. A receiver coil on the EV picks up the magnetic field to wirelessly charge the vehicle battery. The piezoelectric elements, capacitor, and coil are arranged around the tire. The system provides self-sustaining, contactless charging without requiring infrastructure or contact with the road.

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