Fault detection method for central tire inflation system.

摘要

A diagnostic method for sensing system faults in an on-board CTIS (10) for measuring and controlling the inflation pressure of an inflatable tire (12/14), said CTIS measuring inflation pressure of said tire by fluidly connecting the interior pressurized chamber of said tire to means (22) associated with a conduit (20) for causing said conduit to assume a pressure equal to tire pressure and then sensing the pressure in said conduit; said CTIS having a steady state condition during which said conduit is isolated from the interior pressurized chamber of said tire and is vented to atmospheric pressure, said method characterized by: causing said CTIS to assume the steady state condition thereof; sensing the pressurization in said conduit during steady state conditions; comparing said sensed pressure in said conduit to a predetermined reference range of pressures; and, if said sensed pressure is not within said reference range, preventing further control or measurements of the pressurizing of said tire.