Enhanced techniques for independent securement and ignition management for electrified vehicles with e-securement systems
AssigneeFca US LLC
InventorAbhilash Gudapati
Life of this patent
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Abstract
Independent electronic securement and ignition management techniques for an electrified vehicle includes a park pawl system with primary and a secondary park pawl controllers configured to control park state arbitration and physical movement of a park pawl actuator, respectively, an electric parking brake (ePB), and a vehicle controller connected to the park pawl system via a controller area network (CAN) and configured to detect a malfunction of the park pawl system and, in response to detecting the park pawl system malfunction, automatically command the ePB to engage to inhibit movement of the electrified vehicle and without any input from an operator of the vehicle.
Claims18
An independent electronic securement and ignition management system for an electrified vehicle, the system comprising:
- a park pawl system comprising:
- a park pawl configured to engage/disengage a driveline of the electrified vehicle to selectively inhibit movement of the electrified vehicle,
- a park pawl actuator configured to physically move the park pawl actuator between engagement/disengagement positions, and
- a primary park pawl controller and a secondary park pawl controller each configured to control park state arbitration and physical movement of the park pawl actuator, respectively;
- an electric parking brake (ePB) configured to engage/disengage to selectively inhibit movement of the electrified vehicle;
- and
- a vehicle controller connected to the park pawl system via a controller area network (CAN) and configured to:
- detect a malfunction of the park pawl system, and,
- in response to detecting the park pawl system malfunction, automatically command the ePB to engage to inhibit movement of the electrified vehicle and without any input from an operator of the vehicle.
An independent electronic securement and ignition management method for an electrified vehicle, the method comprising:
- providing a park pawl system of the electrified vehicle, the park pawl system comprising:
- a park pawl configured to engage/disengage a driveline of the electrified vehicle to selectively inhibit movement of the electrified vehicle,
- a park pawl actuator configured to physically move the park pawl actuator between engagement/disengagement positions, and
- a primary park pawl controller and a secondary park pawl controller each configured to control park state arbitration and physical movement of the park pawl actuator, respectively;
- and
- providing an electric parking brake (ePB) of the electrified vehicle configured to engage/disengage to selectively inhibit movement of the electrified vehicle;
- and
- providing a vehicle controller connected to the park pawl system via a controller area network (CAN) and:
- detecting, by the vehicle controller, a malfunction of the park pawl system, and,
- in response to detecting the park pawl system malfunction, automatically commanding, by the vehicle controller, the ePB to engage to inhibit movement of the electrified vehicle and without any input from an operator of the vehicle.
Dependencies are inferred from the claim text.