METHOD OF MANAGING AVAILABLE OPERATING STATES IN AN ELECTRIC VEHICLE POWERTRAIN
First Claim
1. A method of managing available operating states in an electrified powertrain comprising:
- identifying a plurality of operating states of the electrified powertrain, each operating state representing a distinct physical configuration of the electrified powertrain, and wherein the electrified powertrain is configured to rotatably drive a vehicle wheel at a rotational output speed;
determining, via a processor in communication with the electrified powertrain, an allowable hardware operating speed range for each of the plurality of operating states, the allowable hardware operating speed range being defined by a first hardware limit and a second hardware limit;
determining a real operating speed range for each of the plurality of operating states, the real operating speed range being a subset of the allowable hardware operating speed range, and being defined by a first real limit that is greater than the first hardware limit, and by a second real limit that is less than the second hardware limit;
determining an ideal operating speed range for each of the plurality of operating states, the ideal operating speed range being a subset of an allowable real operating speed range, and being defined by a first ideal limit that is greater than the first real limit, and by a second ideal limit that is less than the second real limit;
indicating an operating state of the plurality of operating states as ideal-allowed if an actual output speed of the electrified powertrain is within the ideal operating speed range for that operating state; and
commanding, via the processor, the electrified powertrain to operate within one of the operating states that is indicated as ideal-allowed.
3 Assignments
0 Petitions
Accused Products
Abstract
A method of managing available operating states in an electrified powertrain includes: identifying a plurality of operating states; determining an allowable hardware operating speed range for each of the plurality of operating states; determining a real operating speed range for each of the plurality of operating states; determining an ideal operating speed range for each of the plurality of operating states, the ideal operating speed range being a subset of the allowable real operating speed range; indicating an operating state of the plurality of operating states as ideal-allowed if an actual output speed of the electrified powertrain is within the ideal operating speed range for that operating state; and commanding the electrified powertrain to operate within one of the operating states that is indicated as ideal-allowed.
4 Citations
11 Claims
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1. A method of managing available operating states in an electrified powertrain comprising:
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identifying a plurality of operating states of the electrified powertrain, each operating state representing a distinct physical configuration of the electrified powertrain, and wherein the electrified powertrain is configured to rotatably drive a vehicle wheel at a rotational output speed; determining, via a processor in communication with the electrified powertrain, an allowable hardware operating speed range for each of the plurality of operating states, the allowable hardware operating speed range being defined by a first hardware limit and a second hardware limit; determining a real operating speed range for each of the plurality of operating states, the real operating speed range being a subset of the allowable hardware operating speed range, and being defined by a first real limit that is greater than the first hardware limit, and by a second real limit that is less than the second hardware limit; determining an ideal operating speed range for each of the plurality of operating states, the ideal operating speed range being a subset of an allowable real operating speed range, and being defined by a first ideal limit that is greater than the first real limit, and by a second ideal limit that is less than the second real limit; indicating an operating state of the plurality of operating states as ideal-allowed if an actual output speed of the electrified powertrain is within the ideal operating speed range for that operating state; and commanding, via the processor, the electrified powertrain to operate within one of the operating states that is indicated as ideal-allowed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of managing available operating states in an electrified powertrain comprising:
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identifying a first plurality of operating states that are capable of being achieved by the electric powertrain; identifying a first operating state of the first plurality of operating states that is being used to drive a vehicle wheel at an output speed; determining a fault in a second operating state of the first plurality of operating states, the fault preventing the second operating state from being available to drive the vehicle wheel; determining, via a processor, if the fault in the second operating state prevents a third operating state of the first plurality of operating states from being available to drive the vehicle wheel; identifying a second plurality of operating states that are available to drive the vehicle wheel; determining a third plurality of operating states from the second plurality of operating states, wherein the output speed of the vehicle wheel is within a first range of output speeds for each of the operating states in the third plurality of operating states; determining a fourth plurality of operating states from the third plurality of operating states, wherein the output speed of the vehicle wheel is within a second range of output speeds for each of the operating states in the fourth plurality of operating states; wherein the first range of output speeds is within an extreme hardware-limited operating range by a first margin for each operating state of the fourth plurality of operating states; and wherein the second range of output speeds is within the first range of output speeds by a second margin for each operating state of the fourth plurality of operating states; and transitioning, via the processor, the electrified powertrain from the first operating state to a fourth operating state selected from the fourth plurality of operating states if the fourth operating state is available. - View Dependent Claims (9, 10, 11)
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Specification