System and methods for evaporative emissions leak detection based on a vehicle location
First Claim
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1. A method for detecting evaporative emissions system leaks of a vehicle, comprising:
- via a controller onboard the vehicle with instructions stored in non-transitory memory;
receiving updated software modules and information through the internet, the updated modules stored in the non-transitory memory, and receiving a geographical location including jurisdiction borders via a GPS coupled to the vehicle, and cross-referencing information received from GPS to information from the internet to determine local weather conditions and local vehicle regulations;
adjusting a leak detection threshold stored in memory based on the vehicle geographical location including jurisdiction borders and the cross-referenced local vehicle regulations;
adjusting one or more leak detection test parameters based on the adjusted leak detection threshold; and
indicating a leak based on the adjusted leak detection threshold, the vehicle being a hybrid vehicle.
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Abstract
A method for detecting evaporative emissions system leaks, comprising: adjusting a leak detection threshold based on a vehicle geographical location including jurisdiction borders; and indicating a leak based on the adjusted threshold. In this way, a vehicle may perform OBD EVAP leak tests in accordance with local regulations. This method allows for a single PCM to be installed in all vehicles of a certain model during manufacturing regardless of the jurisdiction where the vehicle will be sold, thereby reducing part complexity and simplifying the manufacturing process.
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Citations
17 Claims
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1. A method for detecting evaporative emissions system leaks of a vehicle, comprising:
via a controller onboard the vehicle with instructions stored in non-transitory memory; receiving updated software modules and information through the internet, the updated modules stored in the non-transitory memory, and receiving a geographical location including jurisdiction borders via a GPS coupled to the vehicle, and cross-referencing information received from GPS to information from the internet to determine local weather conditions and local vehicle regulations; adjusting a leak detection threshold stored in memory based on the vehicle geographical location including jurisdiction borders and the cross-referenced local vehicle regulations; adjusting one or more leak detection test parameters based on the adjusted leak detection threshold; and indicating a leak based on the adjusted leak detection threshold, the vehicle being a hybrid vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
via a controller onboard the vehicle with instructions stored in non-transitory memory; receiving information through the internet; receiving a geographical location including jurisdiction borders via a GPS coupled to the vehicle; determining a vehicle'"'"'s location via the geographical information; cross-referencing information received from GPS to information from the internet to determine local weather conditions and local vehicle regulations; determining an evaporative emissions leak detection threshold for a jurisdiction comprising the vehicle'"'"'s location based on the local vehicle regulations; adjusting one or more leak detection test parameters based on the determined evaporative emissions leak detection threshold; and running an evaporative emissions leak test using the determined evaporative emissions leak detection threshold and the adjusted test parameters. - View Dependent Claims (9, 10, 11)
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12. A system for detecting evaporative emissions leaks in a vehicle, comprising:
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a global positioning system; an evaporative emissions testing subsystem configured to test for evaporative emissions leaks of at least two sizes; and a controller configured to; receive information through the internet; receive a geographical location including jurisdiction borders via the GPS coupled to the vehicle; cross-reference information received from the GPS to information from the internet to determine local weather conditions and local vehicle regulations; determine the vehicle'"'"'s geographical location via the global positioning system; determine an evaporative emissions leak detection threshold for a jurisdiction comprising the vehicle'"'"'s geographical location and the local vehicle regulations; and run an evaporative emissions leak test using the determined evaporative emissions leak detection threshold. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification