Abstract: Examples of techniques for determining tire leak rate are disclosed. In one example implementation, a method includes receiving, by a processing device, temperature data, pressure data, tire characteristics, and an estimated leak rate associated with the tire. The method further includes calculating, by the processing device, a temperature normalized fused pressure after fusing the temperature data and the pressure data. The method further includes determining, by the processing device, the tire leak rate based at least in part on a decay of the temperature normalized fused pressure over time. The method further includes providing, by the processing device, an alert to an operator of the vehicle that a leak is detected based at least in part on a comparison between the tire leak rate and a leak rate threshold.

Abstract: Examples of techniques for determining tire leak rate are disclosed. In one example implementation, a method includes receiving, by a processing device, temperature data, pressure data, tire characteristics, and an estimated leak rate associated with the tire. The method further includes calculating, by the processing device, a temperature normalized fused pressure after fusing the temperature data and the pressure data. The method further includes determining, by the processing device, the tire leak rate based at least in part on a decay of the temperature normalized fused pressure over time. The method further includes providing, by the processing device, an alert to an operator of the vehicle that a leak is detected based at least in part on a comparison between the tire leak rate and a leak rate threshold.

Abstract: A tire assembly includes a reservoir, a tire, and a pressure module. The pressure module includes a first valve, a second valve, and a control unit. The first valve selectively directs air from the reservoir to the interior cavity. The second valve directs air from the interior cavity of the tire to the atmosphere. The control unit is configured to selectively send a first control signal to the first valve such that the first valve cycles from a first position, at which air is prevented from flowing from the reservoir to the interior cavity, to a second position, at which air is allowed to flow from the reservoir to the interior cavity of the tire. The control unit is configured to selectively send another first control signal to the first valve such that the first valve cycles from the second position to the first position.

Abstract: A tire assembly includes a reservoir, a tire, and a pressure module. The pressure module includes a first valve, a second valve, and a control unit. The first valve selectively directs air from the reservoir to the interior cavity. The second valve directs air from the interior cavity of the tire to the atmosphere. The control unit is configured to selectively send a first control signal to the first valve such that the first valve cycles from a first position, at which air is prevented from flowing from the reservoir to the interior cavity, to a second position, at which air is allowed to flow from the reservoir to the interior cavity of the tire. The control unit is configured to selectively send another first control signal to the first valve such that the first valve cycles from the second position to the first position.

Abstract: A pressure system of a tire assembly of a vehicle includes a tire system, a wheel system, and a control valve assembly. The tire system includes a tire defining an interior cavity configured for holding a first volume of compressed air therein. The wheel system defines a reservoir configured for holding a second volume of compressed air therein. The control valve assembly is in fluid communication with each of the interior cavity of the tire and with the reservoir. The control valve assembly is configured to selectively direct air from the reservoir to the interior cavity of the tire such that a desired air pressure within the interior cavity of the tire is achieved. The control valve assembly is configured to selectively direct air from the interior cavity of the tire and atmosphere, such that the desired air pressure within the interior cavity of the tire is achieved.

Abstract: A suspension system for a vehicle includes a damper having a central longitudinal axis, and a jack assembly attached to the damper. The jack assembly includes a seat translatable with respect to the damper along the central longitudinal axis. The seat includes a first rack having a first exterior surface defining a plurality of first grooves therein, and a second rack having a second exterior surface defining a plurality of second grooves therein. The jack assembly also includes a first pinion including a plurality of first teeth each matable with each of the plurality of first grooves, and a second pinion including a plurality of second teeth each matable with each of the plurality of second grooves. A vehicle including the suspension system is also disclosed.

Abstract: A suspension system for a vehicle includes a damper and a jack assembly. The damper includes a first tube defining a first cavity and having a longitudinal axis, a second tube disposed within the first cavity and defining a second cavity, wherein the second tube is spaced apart from the first tube to define a reservoir chamber, and a piston translatable within the second cavity along the axis, wherein the piston abuts the second tube to define a rebound chamber and a compression chamber. The system includes a jack assembly attached to the damper and configured for raising and lowering the body with respect to the wheel. The assembly includes a jack piston abutting the first tube, and a jack cylinder also abutting the first tube and translatable with respect to the jack piston to thereby raise and lower the body. A vehicle including the suspension system is also disclosed.

Abstract: A suspension system for a vehicle includes a damper having a central longitudinal axis, and a jack assembly attached to the damper. The jack assembly includes a seat abutting and rotatable about the damper, a resilient member coiled about the damper and coupled to the seat so that the resilient member is not rotatable with respect to the seat, a ball screw abutting and fixedly attached to the damper, wherein the ball screw is not rotatable about the damper, a ball nut abutting and rotatable about the ball screw and the damper, a first clutch coiled about the ball nut and coupled to the seat, and a second clutch coiled about the damper and coupled to the ball nut. The seat is translatable along the damper to thereby raise and lower the body of the vehicle. A vehicle including the suspension system is also disclosed.

Abstract: A suspension system for a vehicle includes a damper and a jack assembly. The damper includes a first tube defining a first cavity and having a longitudinal axis, a second tube disposed within the first cavity and defining a second cavity, wherein the second tube is spaced apart from the first tube to define a reservoir chamber, and a piston translatable within the second cavity along the axis, wherein the piston abuts the second tube to define a rebound chamber and a compression chamber. The system includes a jack assembly attached to the damper and configured for raising and lowering the body with respect to the wheel. The assembly includes a jack piston abutting the first tube, and a jack cylinder also abutting the first tube and translatable with respect to the jack piston to thereby raise and lower the body. A vehicle including the suspension system is also disclosed.

Abstract: A suspension system for a vehicle includes a damper having a central longitudinal axis, and a jack assembly attached to the damper. The jack assembly includes a seat abutting and rotatable about the damper, a resilient member coiled about the damper and coupled to the seat so that the resilient member is not rotatable with respect to the seat, a ball screw abutting and fixedly attached to the damper, wherein the ball screw is not rotatable about the damper, a ball nut abutting and rotatable about the ball screw and the damper, a first clutch coiled about the ball nut and coupled to the seat, and a second clutch coiled about the damper and coupled to the ball nut. The seat is translatable along the damper to thereby raise and lower the body of the vehicle. A vehicle including the suspension system is also disclosed.

Abstract: In accordance with an exemplary embodiment, an active suspension system having a regenerative actuator is provided for an electric or hybrid electric vehicle. The system comprises a drive system including a battery mounted to a chassis and a controller coupled to the drive system. The controller also couples to a suspension system between the chassis and at least one wheel of the vehicle. The suspension system includes an actuator having an electric motor providing energy by converting linear movement of a ball screw into rotational movement of a rotor having a hollow core permitting at least a portion of the ball screw to translate within the rotor during operation of the actuator.

Abstract: In accordance with an exemplary embodiment, an active suspension system having a regenerative actuator is provided for an electric or hybrid electric vehicle. The system comprises a drive system including a battery mounted to a chassis and a controller coupled to the drive system. The controller also couples to a suspension system between the chassis and at least one wheel of the vehicle. The suspension system includes an actuator having an electric motor providing energy by converting linear movement of a ball screw into rotational movement of a rotor having a hollow core permitting at least a portion of the ball screw to translate within the rotor during operation of the actuator.

Abstract: A hose clamp for securing a hose to a component includes a first band of uniform thickness that extends angularly about an axis and includes an engagement surface, and a second band having the uniform thickness and formed in one piece with the first band, extending angularly about the axis, offset axially from the first band, and including a latch surface engageable with the engagement surface, the clamp having an open state in which the first band and the second band are elastically urged angularly about the axis toward contact with the hose, said engagement maintaining an elastically resilient load between the first band and the second band.