Abstract: A valve assembly for a tire pressure control system used to control tire pressure of a vehicle has a unitary body and one or more valves. The unitary body has attachment points for mounting the unitary body to a vehicle wheel end, one or more valve cavities formed in the unitary body, and a plurality of air passages formed in the unitary body. The plurality of air passages have an air supply passage that is connectable to an air supply and a tire supply chamber for connecting to a tire of the vehicle. The air supply passage and the tire supply chamber are connected to each of the one or more valve cavities. Each valve has a valve element mounted to the valve cavity, an air supply chamber in communication with the air supply passage, and a tire supply chamber in communication with the tire supply passage.

Abstract: A valve assembly for a tire pressure control system used to control tire pressure of a vehicle has a unitary body and one or more valves. The unitary body has attachment points for mounting the unitary body to a vehicle wheel end, one or more valve cavities formed in the unitary body, and a plurality of air passages formed in the unitary body. The plurality of air passages have an air supply passage that is connectable to an air supply and a tire supply chamber for connecting to a tire of the vehicle. The air supply passage and the tire supply chamber are connected to each of the one or more valve cavities. Each valve has a valve element mounted to the valve cavity, an air supply chamber in communication with the air supply passage, and a tire supply chamber in communication with the tire supply passage.

Abstract: A tire pressure control system for a vehicle has a supply of compressed air connected to a vehicle tire through an air conduit having a valve and an air pressure sensor that senses the air pressure in the vehicle tire. A microcontroller is connected to control the valve to supply compressed air to the vehicle tire or to vent compressed air from the vehicle tire. The microcontroller has instructions to: calculate a valve operation required to achieve a target pressure; operate the valve according to the calculated valve operation; measure an adjusted air pressure after the calculated valve operation is completed; calculate a further valve operation to achieve the target pressure if necessary; and compare the results of the valve operation to the calculated valve operation and recalibrating the algorithm based on any differences.

Abstract: A tire pressure control system for a vehicle has a supply of compressed air connected to a vehicle tire through an air conduit having a valve and an air pressure sensor that senses the air pressure in the vehicle tire. A microcontroller is connected to control the valve to supply compressed air to the vehicle tire or to vent compressed air from the vehicle tire. The microcontroller has instructions to: calculate a valve operation required to achieve a target pressure; operate the valve according to the calculated valve operation; measure an adjusted air pressure after the calculated valve operation is completed; calculate a further valve operation to achieve the target pressure if necessary; and compare the results of the valve operation to the calculated valve operation and recalibrating the algorithm based on any differences.