# US 11,440,417 B2 · System and method for adjusting vehicle performance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,417 B2 - Document ID: US11440417B2 - Status: Granted - Kind: B2 - Application number: 16/794,783 - Filed: 2020-02-19 - Published: 2021-08-19 - Granted: 2022-09-13 - Earliest claimed: 2020-02-19 - Assignees: Dana Automotive Systems Group, LLC - Applicants: Dana Automotive Systems Group, LLC - Inventors: Thomas L. Nahrwold; Amar Nivarthi - Web page: https://patentgrep.com/patent/US11440417B2 ## CPC - B60L 7/18: Controlling the braking effect (B60L7/12, B60L7/14, B60L7/16 take precedence) - B60L 15/20: for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed - B60L 7/10: Dynamic electric regenerative braking (B60L7/22 takes precedence) - B60L 15/2018: {for braking on a slope} - B60L 58/12: responding to state of charge [SoC] - B60L 2240/423: Torque - B60L 2240/463: Torque - B60L 2240/622: by satellite navigation - B60L 2240/642: Slope of road - B60L 2240/66: Ambient conditions - B60L 2240/667: Precipitation - B60L 2250/26: by pedal actuation - B60L 2250/28: Accelerator pedal thresholds - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract Methods and systems for operating axles of a vehicle are provided. In one example, relationships between accelerator pedal position and driver demand torque may be adjusted as a function of a vehicle's geographical location. Further, a relationship between brake pedal position and requested braking amount may be adjusted as a function of a vehicle's geographical location. ## Claims ### Claim 1 A method for operating a vehicle powertrain, comprising: adjusting a relationship between an accelerator pedal position and a powertrain torque request in response to a geographical position of a vehicle, where adjusting the relationship includes increasing a wheel torque with respect to the accelerator pedal position when the geographical position of the vehicle indicates that the vehicle is traveling off-road as compared to the wheel torque with respect to the accelerator pedal position when the geographical position of the vehicle indicates that the vehicle is traveling on-road. ### Claim 2 (depends on 1) The method of claim 1, where the geographical position of the vehicle is determined via a global positioning system. ### Claim 3 (depends on 1) The method of claim 1, further comprising adjusting the relationship between the accelerator pedal position and the powertrain torque request in response to forecast snow or rain. ### Claim 4 (depends on 1) The method of claim 1, further comprising adjusting the relationship between the accelerator pedal position and the powertrain torque request in response to the vehicle being at a geographical location where wheel slip or wheel locking of the vehicle occurred in the past. ### Claim 5 (depends on 4) The method of claim 4, where adjusting the relationship between the accelerator pedal position and the powertrain torque request includes decreasing the powertrain torque request as a function of accelerator pedal position. ### Claim 6 (depends on 1) The method of claim 1, further comprising adjusting the relationship between the accelerator pedal position and the powertrain torque request in response to an indication of heavy traffic. ### Claim 7 (depends on 6) The method of claim 6, where the indication of heavy traffic is based on a distance the vehicle is from a second vehicle. ### Claim 8 (depends on 7) The method of claim 7, where the indication of heavy traffic is further based on an actual total number of stops of the vehicle in a predetermined amount of time. ### Claim 9 A method for operating a vehicle powertrain, comprising: adjusting a relationship between an accelerator pedal position and a powertrain torque request in response to a geographical position of a vehicle; and adjusting a relationship between a brake pedal position and regenerative braking power in response to the geographical position of the vehicle. ### Claim 10 (depends on 9) The method of claim 9, where adjusting the relationship between the brake pedal position and regenerative braking power includes increasing the regenerative braking power with respect to the brake pedal position when the geographical position of the vehicle indicates that the vehicle is traveling off-road as compared to the regenerative braking power with respect to the brake pedal position when the geographical position of the vehicle indicates that the vehicle is traveling on-road. ### Claim 11 (depends on 9) The method of claim 9, further comprising adjusting the relationship between the brake pedal position and the regenerative braking power in response to forecast snow or rain. ### Claim 12 (depends on 9) The method of claim 9, where the vehicle powertrain receives power via an electric energy storage device, and further comprising: adjusting a relationship between a maximum state of charge of the electric energy storage device in response to a distance of a negative grade road being traveled by the vehicle. ### Claim 13 (depends on 9) The method of claim 9, further comprising adjusting the relationship between the brake pedal position and the regenerative braking power in response to a grade of a road being traveled by the vehicle. ### Claim 14 A vehicle system, comprising: a first electric machine coupled to an axle; a global position detecting system; and a controller including executable instructions stored in non-transitory memory that cause the controller to adjust an amount of wheel torque that is provided to a vehicle as a function of accelerator pedal position in response to a vehicle being at a geographical location where wheel slip of the axle occurred at a time in the past. ### Claim 15 (depends on 14) The vehicle system of claim 14, where the geographical location is determined via the global position detecting system. ### Claim 16 (depends on 14) The vehicle system of claim 14, further comprising additional instructions that cause the controller to adjust an amount of regenerative braking power that is provided to the vehicle as a function of brake pedal position in response to a vehicle being at a geographical location where wheel slip of the axle occurred at a time in the past. ### Claim 17 (depends on 14) The vehicle system of claim 14, further comprising additional instructions that cause the controller to increase a maximum state of battery charge in response to a distance of a negative grade road. ### Claim 18 (depends on 14) The vehicle system of claim 14, where the wheel torque is generated via the first electric machine. ### Claim 19 (depends on 14) The vehicle system of claim 14, further comprising a second electric machine coupled to a second axle, and where the wheel torque is generated via the first electric machine and the second electric machine.