A system for tire identification is provided which continuously compares tires mounted on vehicles with tires known to have safety issues. Where a match is discerned for a vehicle mounted tire and a tire having safety issues, warnings are issued to one or all of the vehicle owner, the vehicle dealer, or the vehicle service center.

A design method for an outer contour structure of a tire capable of reducing tire wind resistance, including the following steps: step 1, establishing an initial tire model; step 2, building an tire aerodynamic drag calculation model; step 3, designing a testing scheme using tire five contour parameters; step 4, building a function relationship between tire five outer contour parameters and an aerodynamic drag coefficient values, and verifying the accuracy of the function relationship; and step 5, obtaining tire five outer contour parameters when the aerodynamic drag coefficient value is smallest by using an optimization algorithm. The design method effectively avoids the blindness problem in the design process of the tire outer contour structure and can effectively reduce the design cycle number of the tire outer contour structure, thereby improving the improvement efficiency, meanwhile, it is benefit to reduce tire aerodynamic drag and improve vehicle economy and reduce harmful emissions.

A tire state detection device that includes: a temperature sensor that detects a temperature in a tire air chamber; an acceleration sensor that detects acceleration associated with rotation of a tire; a pressure sensor that detects pressure in the tire air chamber; a storage unit that stores a plurality of maps for calculating a fatigue state of the tire on the basis of the detected temperature, the detected acceleration and the detected pressure; and a tire fatigue index calculation unit that calculates, by referring to each of the plurality of maps, a tire fatigue index from the detected acceleration, the detected temperature, and the detected pressure.

There is provided a computerized system comprising a processing unit and associated memory configured to obtain a three-dimensional dataset informative of at least part of a tread of a tire, and determine, using the three-dimensional dataset, data informative of tread depth of the tire.

The carcass of the pneumatic tire includes a plurality of carcass cords formed of conductors and arranged along the tire radial direction and the tire width direction, and a circumferential cord formed of conductors and arranged along the tire circumferential direction. The circumferential cord contacts the carcass cord.

A system and method are provided for predicting the non-linear progression in vehicle tire wear. The system determines an original tread depth for a tire associated with a vehicle, and further determines an initial wear rate for the tire based at least partially on the original tread depth. One or more tire conditions are measured as time-series inputs to a predictive tire wear model, for example utilizing “brush-type” tire wear models for a contact interface between a base material of the tire and road surfaces, wherein the interface is represented as a plurality of independently deformable elements, wherein a current wear rate is normalized based at least partially on said inputs to the initial wear rate for the tire. The system can then predict a tire wear status of the tire for specified future parameters, such as for example a specified future distance traveled or a time traveled.

A device is disclosed, which includes: a charge portion with a plurality of piezoelectric elements embedded in a tire configured for a vehicle, a capacitor mechanically coupled to the tire and electrically coupled to the plurality of piezoelectric elements; a transmitter coil, mechanically coupled to the tire and electrically coupled to the capacitor through a discharge portion; wherein in response to an external radial pressure on the tire resulting from movement of the vehicle which causes a pressure on the plurality of piezoelectric elements, the plurality of piezoelectric elements produce an electrical charge on the capacitor, and wherein the discharge portion electrically connects the electrical charge on the capacitor to the transmitter coil to send electromagnetic power to the vehicle.

A processing device divides an initial tread pattern into multiple mutually adjacent partial patterns, each having a width smaller than that of the initial tread pattern, by at least one straight line along a circumferential direction of a tire. The processing device calculates variation amounts of characteristic values of the partial patterns with respect to the circumferential direction, based on a contact region, each of the characteristic values indicating a shape of a corresponding partial pattern. The processing device modifies the shapes of the partial patterns so as to reduce the variation amounts of the characteristic values of the partial patterns. The processing device relatively moves the partial patterns along the circumferential direction so as to reduce a total variation amount of characteristic values of at least two mutually adjacent partial patterns. The processing device combines the partial patterns with each other to generate a tread pattern of the tire.

A method for designing a pneumatic tire to have improved vibration characteristics. Dynamic testing of the tire detects a) respective frequencies of a plurality of radial vibration modes of the tire, and b) respective frequencies of a plurality of torsional vibration modes of the tire. The testing may determine that a first interval between the frequency of an even-numbered radial vibration mode and the frequency of an even-numbered torsional vibration mode is less than a first threshold, and/or may determine that a second interval between the frequency of an odd-numbered radial vibration mode and the frequency of an odd-numbered torsional vibration mode is less than a second threshold. One or more design parameter of the tire is/are modified to increase at least one of first interval and the second interval to the respective first or second threshold.

A tire testing apparatus of a drum type includes: a drum including a transmission portion on an outer circumferential surface; an imaging device that images a ground contact surface of a tire from an inside of the drum via the transmission portion; a ground contact surface imaging processing unit that images, using the imaging device, the ground contact surface when the tire is brought into ground contact with the transmission portion; an edging processing unit that performs edging processing for image information of the imaged ground contact surface of the tire; a division processing unit that performs division processing for the image information subjected to the edging processing into regions which satisfy a predetermined resolution condition; a matching processing unit that performs matching processing by using the divided regions; and a slip amount calculation processing unit that calculates a slip amount and a ground contact surface moving amount.