Engine operation based on integrated starter-generator temperature
AssigneeFord Global Technologies, LLC
InventorsJosephine S. Lee, Mark Shields, Sassan Farahmand, Bastian Hartmann, Paul Stephen Bryan, Joseph Andrew Zamora
Life of this patent
Estimating the term…
Abstract
A vehicle includes an engine and a controller. The controller may be configured to, responsive to indication of a temperature of a starter-generator exceeding a de-rated threshold, command the engine to start and disable engine automatic shut-off. And the controller may be configured to, responsive to indication of the temperature exceeding a disabled threshold, or the temperature exceeding the de-rated threshold and a traction battery discharge power being less than a threshold, command the engine to start and shed a load.
Claims15
A vehicle comprising:
- an engine;
- and
- a controller configured to,
- responsive to indication of a temperature of a starter-generator exceeding a de-rated threshold, command the engine to start and disable engine automatic shut-off,
- responsive to indication of the temperature exceeding a disable threshold, or the temperature exceeding the de-rated threshold and a traction battery discharge power being less than a threshold, command the engine to start and shed a load, and
- responsive to indication of the temperature dropping below the de-rated threshold and dropping below a first threshold, enable engine shut-off, wherein the first threshold is less than the de-rated threshold and the de-rated threshold is less than the disable threshold.
A vehicle comprising:
- an engine;
- an integrated starter-generator (ISG);
- and
- a controller configured to,
- responsive to indication of a ISG temperature exceeding a de-rated threshold that is greater than a percentage of a Curie temperature, command the engine to start and disable engine automatic shut-off, wherein the percentage is associated with a permanent magnetic field strength (PMFS) having a value that is ½ of the PMFS at 0 degrees Celsius.
A method of controlling a vehicle comprising:
- by a controller,
- responsive to receiving indication of a temperature of an integrated starter-generator (ISG) exceeding a de-rated threshold, commanding an engine coupled with the ISG to start and disabling engine shut-off;
- responsive to receiving indication of the temperature exceeding a disable threshold, disabling a load;
- and
- responsive to indication of the temperature dropping below the de-rated threshold and dropping below a first threshold, enabling engine shut-off, wherein the first threshold is less than the de-rated threshold and the de-rated threshold is less than the disable threshold.
Dependencies are inferred from the claim text.