A tire assembly includes a tire and a tire height and contact patch sensor at least partially disposed within a tire chamber of the tire. The sensor includes a radar source operable to direct millimeter wave radar waves in the range of 120 to 240 gigahertz (GHz) toward an inner surface of the tire. The sensor also includes a radar receptor operable to generate a signal upon receiving the reflected radar waves. A processor is operable to determine a distance between the radar source and a target based upon at least one of: (i) a time of flight; (ii) a frequency phase shift. The sensor includes an antenna for transmitting data to a system external to the tire chamber. The processor optionally determines dimensions of the tire contact patch and/or can generate an image of the tire contact patch for image pattern matching to determine inflation and/or load state of the tire.

A tire includes: a bead filler extending to an outer side in the tire-radial direction of a bead core; a carcass ply folded around the bead core; a steel chafer arranged so as to cover the carcass ply around the bead core; a first pad covering an outer side in the tire-width direction of a folding end of the carcass ply, at the outer side in the tire-radial direction of the end part of the steel chafer; a second pad covering an outer side in the tire-width direction of the first pad; and side wall rubber covering at least part of the outer side in the tire-width direction of the second pad, in which an electronic component is provided between the second pad and the side wall rubber.

A method or system configured for assessing the integrity of a sensor module mounted in a tire of a wheel or on an inner surface of the tire of the wheel.

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.

This disclosure relates to a method and system o real time prediction of tire remaining useful life using a tire digital twin. Herein, the digital twin of the tire monitors a plurality of tires while accounting for runtime as well as parking operation of tires. During runtime, tire goes through multiple operational changes, therefore, the system is configured to estimate the operational changes. The estimation is done in the form of index, which is compared with the manufacturers' recommended value. Similarly, while vehicle is parked, tire still goes through changes which play an important role in its overall health, like, long pending wheel rotation can lead to flat spot. Tire inflation can change owing to cool down effect as well as uncontrolled natural leakages. Further, these parameter indexes are clubbed together to calculate the health index of the tire, which is used to estimate the tire's current remaining useful life.

The present disclosure relates to a method of inflating a tire and a central tire inflation system. The system has the tire connected to a pressure port for applying an air pressure via a pneumatic line. An ambient air temperature and a target pressure for the tire is received and a tire inflation rate based on the ambient air temperature and the target pressure is calculated. An estimated pressure of the tire based on tire inflation rate is estimated and the tire is inflated at the calculated tire inflation rate. A pressure of the tire is measured and a correction factor based on a ratio between the measured pressure and the estimated pressure is calculated. The tire inflation rate using the correction factor is corrected and the tire is inflated at the corrected tire inflation rate until the target pressure is reached.

This disclosure provides a tire formed of a body having multiple plies and a tread that surrounds the body. In some implementations, the plies and/or the tread include a resonator that generates a resonant signal in response to being activated by locally generated power or by an externally generated excitation signal. Multiple resonators formed of carbon-containing materials are distributed in the plies and/or tread to respond to changes to the tire by altering a characteristic of the resonant signal. Such alterations include frequency shifting of the resonant signal and/or attenuation of the resonant signal. The resonator can be configured to resonate at a first frequency when a structural characteristic of a respective ply or tread is greater than a level, and to resonate at a second frequency different than the first frequency when the structural characteristic of the respective ply or tread is not greater than the level.

Methods, apparatuses, computer program products, systems for estimating a tire operating efficiency and range of an electric vehicle are disclosed. In a particular embodiment, a method includes determining a tire load parameter for a tire based in part on a tire deformation parameter generated by a tire mounted sensor (TMS); determining a coefficient of rolling resistance parameter for the tire based in part on a tire pressure measurement and a linear velocity measurement; and determining, based on the tire load parameter and the coefficient of rolling resistance parameter, a force of rolling resistance parameter for the tire.

A systematized multi-point sensors unit for a tire and a tire having the same are provided. More specifically, the systematized multi-point sensors unit includes: a sensor module composed of a plurality of sensors and attached onto an inner surface of a tire to monitor conditions of a tire and a road surface, and a connection member for connecting the plurality of sensors by wire, wherein the plurality of sensors are connected to each other by wire and arranged in a line in a manner of being perpendicular to a traveling direction of the tire.

A tire load estimation system includes at least one tire supporting a vehicle, in which the at least one tire includes a pair of sidewalls extending to a circumferential tread. A sensor is mounted to the at least one tire. A footprint is formed by the tread and includes a centerline with a footprint centerline length. The footprint centerline length is measured by the sensor. A tire load estimator receives a precalibrated sensitivity, the footprint centerline length during straight-line driving conditions, a reference footprint value, and a reference load value as inputs. The tire load estimator determines an estimation of tire load and outputs the estimation to at least one of a vehicle control system and a vehicle electronic control unit. A method for estimating the load of a tire is also provided.