Adaptive fuel and charge consumption estimation in powertrain systems
AssigneeGarrett Transportation I Inc.
InventorTomas Poloni
Life of this patent
Estimating the term…
Abstract
Engine systems, vehicles and methods related to refueling in conjunction with infrastructure to vehicle communication. A vehicle or engine system may receive refueling information including a fuel quantity at a refueling event, and uses the refueling information to identify and/or eliminate measurement or modelling bias in the underlying engine system controls. The vehicle may also self-determine fuel efficiency. The vehicle may use charging data, rather than refueling data, to perform calculations of battery life, state of charge, state of health, and efficiency in electric vehicle examples.
Claims12
A vehicle comprising:
- a rechargeable battery;
- a motor configured to move the vehicle using current obtained from the rechargeable battery;
- a controller configured to monitor energy consumption by the vehicle using an onboard current monitor;
- a communication apparatus coupled to the controller and configured for communication with an offboard charging station;
- wherein:
- the controller is configured track a bias term associated with the onboard current monitor;
- the controller is configured to load charging data from the communication apparatus to determine a quantity of charge added to the battery by the offboard charging station in a charging event;
- responsive to receiving the charging data from the communication apparatus, the controller is configured to update the bias term;
- and
- the controller is configured to use the updated bias term to track current consumption following the receipt of the charging data to determine and report range of the vehicle to a user.
A method of tracking current usage in an electric vehicle, the electric vehicle including a rechargeable battery, a motor configured to move the vehicle using current obtained from the rechargeable battery, a controller configured to monitor current consumption by the vehicle using an onboard current monitor, and a communication apparatus coupled to the controller and configured for communication with an offboard charging station, the method comprising:
- the onboard current monitor measuring current usage in the vehicle and providing an output to the controller;
- the controller tracking a bias term associated with the output of the onboard current monitor;
- the controller using the communication apparatus to obtain a measured a quantity of charge added to the battery by the offboard charging station in a charging event;
- responsive to receiving the charging data from the communication apparatus, the controller updating the bias term;
- the controller using the updated bias term to track current consumption following the receipt of the charging data to determine range of the vehicle;
- and
- the controller reporting the determined range of the vehicle to a user.
Dependencies are inferred from the claim text.