METHOD FOR CONTROLLING THE OPERATING CONDITION OF A VEHICLE BASED ON AN ONBOARD DIAGNOSTIC STRATEGY DEFINING DIFFERENT TYPES OF FAILURES

• US 20090030570A1
• Filed: 11/29/2006
• Published: 01/29/2009
• Est. Priority Date: 12/13/2005
• Status: Active Grant

• Current Assignee: Renault Sas (Renault)
• Original Assignee: Renault Sas (Renault)
• Inventors: Regnard De Lagny, Joseph, Belaid, Abdelmalik
• Granted Patent: US 8,239,090 B2
• Time in Patent Office: Days
• US Class Current: 701/35
• CPC Class Codes: B60W 50/0205 Diagnosing or detecting failures; Failure detection models
• CPC Class Codes: G07C 5/0816 Indicating performance data, e.g. occurrence of a malfunction

Abstract

A method for controlling an operating condition of a vehicle including executing, at each of operating cycles, at least one diagnostic phase applied to at least one computer controlling an operating condition of the vehicle, during which the computer produces and consumes data, at least one of the data capable of taking a particular predetermined value resulting from detection of an operating failure by the computer, so as to indicate a diagnostic result associated with the failure. The method stores, at the end of each cycle, the particular value for the failure concerned and initializes the diagnostic phase at the beginning of the next operating cycle with the stored particular data so as to reproduce, for the failure concerned, the diagnostic result supplied by the diagnostic phase when it was last executed.

Claims

1-7. -7. (canceled)

8. :

A method of monitoring operation of a vehicle comprising;

executing, on each of a vehicle usage cycle, at least one diagnostic phase applied to at least one computer out of electronic computers for monitoring an operation of the vehicle, during which the computer produces and consumes data items, at least one of the data items able to assume a particular predetermined value following detection of an operating failure by the computer, so as to indicate a diagnostic result associated with the failure; and

storing at the end of each cycle a particular value for the failure concerned and initializing the diagnostic phase at a start of a next usage cycle with the particular stored value so as to reproduce, for the failure concerned, the diagnostic result supplied by the diagnostic phase when it was last executed.

9. :

The method as claimed in claim 8, wherein the initializing the diagnostic phase having to be applied to the next usage cycle comprises applying, at the start of the cycle and before the execution of the diagnostic phase, an adapted operating mode of the vehicle according to the particular stored value for the failure concerned.

10. :

The method as claimed in claim 9, wherein the applying the adapted operating mode applies a strategy for reconfiguring an operating parameter corresponding to a detected presence of the failure.

11. :

The method as claimed in claim 9, wherein the applying the adapted operating mode applies a degraded mode strategy of the operation of the vehicle corresponding to a detected presence of the failure.

12. :

The method as claimed in any one of claim 9, wherein once the diagnostic phase has been executed for the next usage cycle, if the diagnostic result associated with the failure indicates absence of the failure, the method further comprises a return to a normal operating mode of the vehicle.

13. :

The method as claimed in any one of claim 9, wherein once the diagnostic phase has been executed for the next usage cycle, if the diagnostic result associated with the failure confirms presence of the failure, the method further comprises maintaining the adapted operating mode.

14. :

The method as claimed in claim 8, applied to a monitoring operation of a drive train of a motor vehicle.