Sensing tube diagnostic systems and methods
AssigneeGM Global Technology Operations LLC
InventorAmanda Hyde
Life of this patent
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Abstract
A diagnostic system of a vehicle includes an energy absorber sandwiched between a front bumper fascia and a front bumper reinforcement of the vehicle. A sensing tube is located between a portion of the energy absorber and the front bumper reinforcement. A first pressure sensor and a second pressure sensor measure a first pressure of air and a second pressure of air within the sensing tube, respectively. An actuator is configured to actuate and vary a pressure within the sensing tube. A diagnostic module is configured to selectively diagnose the presence of a fault with the sensing tube based on at least one of: a first change in the first pressure in response to actuation of the actuator; and a second change in the second pressure in response to the actuation of the actuator.
Claims20
A diagnostic system of a vehicle, comprising:
- an energy absorber sandwiched between a front bumper fascia and a front bumper reinforcement of the vehicle;
- a sensing tube located between a portion of the energy absorber and the front bumper reinforcement;
- a first pressure sensor that is connected to a first end of the sensing tube and that is configured to measure a first pressure of air within the sensing tube;
- a second pressure sensor that is connected to a second end of the sensing tube and that is configured to measure a second pressure of air within the sensing tube;
- an actuator configured to actuate and vary a pressure within the sensing tube;
- a diagnostic module configured to selectively diagnose the presence of a fault with the sensing tube based on at least one of:
- a first change in the first pressure in response to actuation of the actuator;
- and
- a second change in the second pressure in response to the actuation of the actuator.
A diagnostic method for a vehicle, comprising:
- by a first pressure sensor, measuring a first pressure of air within a sensing tube,
- wherein the sensing tube is located between a portion of an energy absorber and a front bumper reinforcement, and
- wherein the energy absorber is sandwiched between a front bumper fascia and the front bumper reinforcement;
- by a second pressure sensor, measuring a second pressure of air within the sensing tube;
- actuating and actuator and varying a pressure within the sensing tube;
- and
- selectively diagnosing the presence of a fault with the sensing tube based on at least one of:
- a first change in the first pressure in response to actuation of the actuator;
- and
- a second change in the second pressure in response to the actuation of the actuator.
A diagnostic system, comprising:
- a sensing tube;
- a first pressure sensor that is connected to a first end of the sensing tube and that is configured to measure a first pressure of air within the sensing tube;
- a second pressure sensor that is connected to a second end of the sensing tube and that is configured to measure a second pressure of air within the sensing tube;
- an actuator configured to actuate and vary a pressure within the sensing tube;
- a diagnostic module configured to selectively diagnose the presence of a fault with the sensing tube based on at least one of:
- a first change in the first pressure in response to actuation of the actuator;
- and
- a second change in the second pressure in response to the actuation of the actuator.
Dependencies are inferred from the claim text.