公开(公告)号：US20180345741A1

公开(公告)日：2018-12-06

申请号：US15778374

申请日：2016-11-03

Applicant: C.R.F. Società Consortile per Azioni

Inventor： Roberto VITOLO ,  Stefano D'Ambrosio ,  Nicolo SALAMONE ,  Giuseppe MARTORANA ,  Michele IELUZZI ,  Giovanni Luigi GABIATI ,  Dario SCANTAMBURLO

IPC: B60C23/00

CPC classification number: B60C23/003

Abstract: An on-board centralized system for regulating pressure of tyres of a vehicle includes a pressurized air source, a circuit communicating the source with a plenum of each wheel, and an arrangement for connecting the plenum of each wheel to the inner chamber of the respective tyre that includes first and second connection lines for deflation and inflation, respectively, of the tyre, and first and second one-way valves interposed, respectively, in the first and second connection lines to allow only a flow of air respectively from and to the inner chamber. The first valve includes a spring having a pre-set load so as to isolate the inner chamber from a part of the circuit upstream of the first valve when said upstream part is at atmospheric pressure, and to guarantee a pre-set minimum value of pressure in the inner chamber when the upstream part is at a pressure lower than atmospheric pressure.

公开(公告)号：US20180345740A1

公开(公告)日：2018-12-06

申请号：US15777779

申请日：2016-11-03

Applicant: C.R.F. Società Consortile per Azioni

Inventor： Roberto VITOLO ,  Stefano D'Ambrosio ,  Nicolo SALAMONE ,  Giuseppe MARTORANA ,  Michele IELUZZI ,  Giovanni Luigi GABIATI ,  Dario SCANTAMBURLO

IPC: B60C23/00

Abstract: An on-board centralized system for regulating pressure of tyres of a vehicle includes a pressurized air source, two pneumatic rotary joints each associated to a driving wheel of the vehicle, and a circuit that sets in communication the pressurized air source with each rotary joint. An output member of a constant-velocity joint and a wheel spindle have an internal duct for air passage, connected to the respective rotary joint and to a plenum of the respective driving wheel. Each non-driving wheel has its wheel spindle traversed by an axial bore for air passage, connected to the circuit via a pneumatic rotary joint and a plenum of the non-driving wheel, which is connected to the inner chamber of the tyre. Each driving or non-driving wheel has its plenum connected to the inner chamber via two parallel lines, for deflating and inflating, respectively, the tyre interposed in which are respective one-way valves.