Method and apparatus for validating OBD repairs
First Claim
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1. A method for validating emissions component conditions of a vehicle comprising the steps of:
- operatively placing drivable wheel hubs of the vehicle under load so that the vehicle drive wheel hubs may be driven without vehicle movement;
running the vehicle through an associated drive cycle associated with that vehicle;
determining if monitored emission components are in a Ready condition at the end of drive cycle; and
monitoring for diagnostic trouble codes at the end of the drive cycle.
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Abstract
A method is provided for validating emissions component conditions of a vehicle including the steps of operatively placing drivable wheel hubs of the vehicle under load so that the vehicle drive wheel hubs may be driven without vehicle movement and running the vehicle through an associated drive cycle associated with that vehicle. The method further includes the steps of determining if monitored emission components are in a Ready condition at the end of drive cycle, and monitoring for diagnostic trouble codes during and at the end of the drive cycle.
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Citations
43 Claims
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1. A method for validating emissions component conditions of a vehicle comprising the steps of:
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operatively placing drivable wheel hubs of the vehicle under load so that the vehicle drive wheel hubs may be driven without vehicle movement;
running the vehicle through an associated drive cycle associated with that vehicle;
determining if monitored emission components are in a Ready condition at the end of drive cycle; and
monitoring for diagnostic trouble codes at the end of the drive cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for validating emissions component conditions of a vehicle comprising the steps of:
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operatively placing drive wheels of the vehicle on a controllable dynamometer;
controlling the dynamometer in accordance with a predetermined control program associated with the vehicle so as to apply appropriate road load forces to the drive wheels of the vehicle during a drive cycle of the vehicle;
operating the vehicle on the dynamometer through an associated drive cycle for that vehicle;
determining if monitored emission components are in a Ready condition at the end of a drive cycle; and
monitoring for diagnostic trouble codes and pending diagnostic trouble codes at the end of the drive cycle. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. An apparatus for validating emissions component conditions of a vehicle comprising:
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a simulator for applying appropriate road load forces to the drive hubs of the vehicle during a operation of the vehicle through a drive cycle associated with that vehicle;
a vehicle speed sensor for monitoring speed of vehicle wheels as the vehicle is run on the simulator;
a display for displaying the vehicle drive cycle of the vehicle running on the simulator, said display simultaneously displaying vehicle speed and a desired vehicle speed range during the vehicle drive cycle; and
an interface communication device coupled to the display for communicating the condition of the vehicle'"'"'s monitored emissions components and diagnostic trouble codes during and at the end of the drive cycle. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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29. A computer readable medium having computer-executable instructions including:
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receiving data from that characterizes operating conditions of at least one control module of a vehicle;
controlling a dynamometer to provide appropriate road load forces to drive hubs of the vehicle during a drive cycle of the vehicle;
providing at least one indicia during the running of the vehicle on the dynamometer; and
storing the data received from the scan tool in a database. - View Dependent Claims (30, 31, 32, 33, 34)
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35. A method for operating a vehicle on a road simulator to activate and cycle vehicle'"'"'s on-board-diagnostic readiness monitors comprising the steps of:
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identifying the vehicle'"'"'s platform;
applying a load to drive hubs of the vehicle so as to simulate road load forces;
verifying the vehicle meets pre-conditions for an on-board-diagnostic readiness monitor test;
operating the vehicle through an associated drive cycle for the identified vehicle platform; and
monitoring a state of readiness after the drive cycle. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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43. A method for operating a vehicle on a road simulator to activate and cycle Readiness Monitors of the vehicle comprising the steps of:
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coupling drive wheels of the vehicle to the road simulator so as to apply road load forces to the vehicle;
verifying the vehicle meets predetermined vehicle Readiness Monitor conditions;
operating the vehicle through a predetermined drive cycle to activate vehicle Readiness Monitors through a complete monitor cycle test; and
determine if Readiness Monitors of the vehicle changed Not Ready to Ready state.
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Specification