Method for triggering a vehicle system monitor
First Claim
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1. A method for a vehicle, comprising:
- during vehicle operation, selectively initiating an on-board diagnostic routine based on predicted engine operating conditions relative to entry conditions of the onboard diagnostic routine, the entry conditions including a vehicle speed threshold, the prediction based on a learned driving pattern of a vehicle operator, the selectively initiating including;
when the predicted engine operating conditions match the entry conditions, initiating the on-board diagnostic routine responsive to vehicle speed higher than the vehicle speed threshold;
when the predicted engine operating conditions do not match the entry conditions, lowering the vehicle speed threshold, and initiating the on-board diagnostic routine responsive to vehicle speed higher than the lowered vehicle speed threshold; and
wherein the selectively initiating further includes temporarily adjusting the one or more of the entry conditions and execution conditions to enable initiation of the on-board diagnostic routine.
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Abstract
Methods and systems are provided for improving the frequency of attempting and successfully completing one or more on-board diagnostic routines. Engine operating conditions are predicted based on a vehicle operator'"'"'s driving pattern and routines are initiated if the predicted conditions match the conditions required for performing the routine. If the conditions do not match, entry and/or execution conditions of the routine are adjusted to better match the predicted conditions, so as to enable the routine to be attempted.
54 Citations
19 Claims
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1. A method for a vehicle, comprising:
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during vehicle operation, selectively initiating an on-board diagnostic routine based on predicted engine operating conditions relative to entry conditions of the onboard diagnostic routine, the entry conditions including a vehicle speed threshold, the prediction based on a learned driving pattern of a vehicle operator, the selectively initiating including; when the predicted engine operating conditions match the entry conditions, initiating the on-board diagnostic routine responsive to vehicle speed higher than the vehicle speed threshold; when the predicted engine operating conditions do not match the entry conditions, lowering the vehicle speed threshold, and initiating the on-board diagnostic routine responsive to vehicle speed higher than the lowered vehicle speed threshold; and wherein the selectively initiating further includes temporarily adjusting the one or more of the entry conditions and execution conditions to enable initiation of the on-board diagnostic routine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for a vehicle, comprising:
during vehicle travel, initiating an on-board diagnostic routine if entry conditions of the on-board diagnostic routine are met; and if the entry conditions are not met and predicted engine operating conditions match the entry conditions, enabling initiation of the on-board diagnostic routine by temporarily adjusting the entry conditions for the on-board diagnostic routine based on the predicted engine operating conditions, the predicted engine operating conditions based on a learned driving pattern of a vehicle operator; and if the entry conditions are not met and predicted engine operating conditions do not match the entry conditions, not initiating the on-board diagnostic routine. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for a hybrid vehicle, comprising:
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during vehicle operation, in response to current engine operating conditions matching entry conditions for a diagnostic routine but predicted future engine operating conditions not matching execution conditions for the diagnostic routine, temporarily relaxing the execution conditions for the diagnostic routine based on a time of day, a day of week, and an operator route preference, to enable completion of the diagnostic routine during vehicle operation; and wherein selectively initiating further includes temporarily adjusting the one or more of the entry conditions and execution conditions to enable initiation of the on-board diagnostic routine. - View Dependent Claims (17, 18, 19)
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Specification