In-vehicle seal integrity verification system

Patent metadata

Field	Value
Publication number	US-11326976-B2
Application number	US-202017003534-A
Country	US
Kind code	B2
Filing date	Aug 26, 2020
Priority date	Feb 12, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A seal integrity verification system includes a pressure source, a valve, and a pressure sensor. The pressure source is fluidly connected to a housing having at least one sealing member. The valve is fluidly connected to the pressure source and the housing. The valve is movable between a first open position and a closed position. The pressure sensor is arranged to provide a first signal indicative of a pressure within the housing.

First claim

Having thus described the present disclosure, it is claimed:

1. A seal integrity verification system, comprising:
a pressure source fluidly connected to a housing having at least one sealing member, wherein the pressure source is a compressor that is arranged to provide a fluid at a positive pressure in the housing;
a valve fluidly connected to the pressure source and the housing, the valve movable between a first open position and a closed position;
a pressure sensor arranged to provide a first signal indicative of a pressure within the housing, wherein the pressure sensor is arranged to provide a second signal indicative of a pressure decay within the housing; and
a control unit in communication with the pressure source, the valve, and the pressure sensor, the control unit programmed to, responsive to a request to verify an integrity of at least one sealing member, command the valve to move towards the first open position and command the pressure source to operate.

2. The seal integrity verification system of claim 1 , wherein the control unit is further programmed to command the compressor to operate to provide the fluid to the housing.

3. The seal integrity verification system of claim 2 , wherein the control unit is further programmed to, responsive to at least one of a predetermined time period and the first signal, command the compressor to cease operation and command the valve to move towards the closed position.

4. The seal integrity verification system of claim 3 , wherein the control unit is further programmed to, responsive to the second signal being indicative of the pressure decay being greater than a threshold, output for display a warning.

5. The seal integrity verification system of claim 4 , wherein the control unit is further programmed to, command the valve to move towards the first open position to vent the fluid.

6. The seal integrity verification system of claim 4 , wherein the control unit is further programmed to, command the valve to move towards a second open position that inhibits a fluid from the pressure source to enter the housing and vents the fluid.

7. A seal integrity verification system comprising:
a pressure source fluidly connected to a housing having at least one sealing member, wherein the pressure source is a compressor that is arranged to provide a fluid at a positive pressure into the housing;
a valve fluidly connected to the pressure source and the housing, the valve movable between a first open position and a closed position;
a pressure sensor arranged to provide a first signal indicative of a pressure within the housing, wherein the pressure source is a vacuum source that is arranged to produce a negative pressure within the housing; and
a control unit in communication with the pressure source, the valve, and the pressure sensor, the control unit programmed to, responsive to a request to verify an integrity of at least one sealing member, command the valve to move towards the first open position and command the pressure source to operate.

Assignees

• Steering Solutions Ip Holding

Inventors

• Haubenstricker Kevin J
• Vorwerck Conrad G

Classifications

• G01M3/26 Primary

  by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors · CPC title

• B62D5/0406

  including housing for electronic control unit · CPC title

• B62D5/0403

  characterised by constructional features, e.g. common housing for motor and gear box · CPC title

• G01M17/007

  Wheeled or endless-tracked vehicles (G01M17/08 takes precedence) · CPC title

• B60R16/0231

  Circuits relating to the driving or the functioning of the vehicle (monitoring tyres B60C23/00; indicating overspeed B60K31/00; for dash boards B60K37/00, B60Q3/10; for indicating emergencies B60Q1/52; brake control systems B60T; registering or indicating the working of vehicles G07C5/00; measuring distance G01C, e.g. combinations of speed and distance G01C23/00; engine indicators G01L; measuring speed or acceleration G01P) · CPC title