Diagnostic and control method for a vehicle system
AssigneeDana Belgium N.V.
InventorsPeter Deckmyn, Bjorn Aelvoet, Brecht Fevery
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for controlling and diagnosing a mechanical vehicle component. In one example, a method may include determining an input device state and an electric machine torque at a diagnostic controller, and identifying a fault condition based on these determinations. Further, the diagnostic controller may trigger an active fault state of the mechanical vehicle component to avoid unintended vehicle acceleration, particularly at low speeds.
Claims18
A method for operation of a vehicle system, comprising:
- at a diagnostic controller independent from a driveline controller, determining a state of a clutch in a gearbox and a vehicle speed;
- and
- in response to determining a fault condition of the gearbox based the clutch state and the vehicle speed, controlling the gearbox in a fault mode;
- wherein controlling the gearbox in the fault mode includes operating the diagnostic controller to override a nominal control command sent from the driveline controller to the gearbox;
- and
- wherein the diagnostic controller and the driveline controller are not in electronic communication with one another.
A vehicle system, comprising:
- a diagnostic controller in electronic communication with a gearbox and including:
- instructions that, when executed, cause the diagnostic controller to:
- determine a state of a clutch in the gearbox and a vehicle speed;
- and
- determine an occurrence of a fault condition based on the state of the clutch and the vehicle speed;
- and
- instructions that, when the fault condition is triggered, cause the diagnostic controller to:
- control the gearbox in a fault mode;
- and
- override a nominal control command sent from a driveline controller to the gearbox;
- wherein the diagnostic controller and the driveline controller are not in electronic communication with one another.
A method for operation of an electric vehicle (EV) system, comprising:
- at a diagnostic controller independent from a driveline controller, determining a state of a plurality of clutches in a gearbox and a vehicle speed;
- and
- in response to determining a fault condition of the gearbox based the clutch state and the vehicle speed, controlling the gearbox in a fault mode;
- wherein controlling the gearbox in the fault mode includes operating the diagnostic controller to override a nominal control command sent from the driveline controller to the vehicle component;
- and
- wherein the diagnostic controller and the driveline controller are not in electronic communication with one another.
Dependencies are inferred from the claim text.