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US 2020/0400084 A1Published application
Methods and system for determining engine speed
AssigneeFord Global Technologies, LLC
InventorsScott Steadmon Thompson, Vincent Martinez, John Eric Rollinger, David Lew, Nicholas Herhusky
Life of this patent
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Abstract
Systems and methods for operating a vehicle that includes an engine and an electric machine are described. In one example, a speed of the engine may be adjusted so that the engine provides power to drive the electric machine without generating numerous rapid engine speed changes in a short amount of time.
Claims20
A powertrain operating method, comprising:
- propelling a vehicle via an engine;
- storing a plurality of requested instantaneous engine rotational speed values in a memory buffer via a controller, the memory buffer including a plurality of unique memory locations, each of the plurality of unique memory locations including one of the plurality of requested instantaneous engine rotational speed values;
- shifting at least one of the plurality of requested instantaneous engine rotational speed values from a first of the unique memory locations to a second of the unique memory locations in response to a buffer step time expiring;
- and
- adjusting engine rotational speed to a maximum requested instantaneous engine rotational speed value stored in the buffer via the controller.
2 more elements
A powertrain operating method, comprising:
- propelling a vehicle via an engine;
- and
- adjusting a rotational speed of the engine via a controller responsive to an amount of electrical power output from a direct current to alternating current converter to one or more electric power consumers, and where the rotational speed of the engine is adjusted to a maximum instantaneous engine rotational speed included in a memory buffer that includes a plurality of requested instantaneous engine rotational speeds.
A system, comprising:
- an engine;
- an electric machine mechanically coupled to the engine;
- and
- a controller including executable instructions stored in non-transitory memory to adjust a rotational speed of the engine via a controller responsive to an amount of electrical power output from a direct current to alternating current converter to one or more electric power consumers, and where the rotational speed of the engine is adjusted to a maximum instantaneous engine rotational speed included in a memory buffer that includes a plurality of requested instantaneous engine rotational speeds
1 more element
Dependencies are inferred from the claim text.