US5999864A
Expired / Lapsed
US
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Method of power management for a hybrid powertrain system
Assignee: FCA US LLC
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Filing: 1997-04-23
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Granted: 1999-12-07
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Expires: 2017-04-23
Abstract
Abstract A method of power management for a hybrid powertrain system includes the step of determining a storage power from a power flow into or out of an energy storage apparatus. The method also includes the step of determining an actual level of energy stored in the energy storage apparatus, determining a desired level of energy stored in the energy storage apparatus, and determining an energy storage level error from a difference between the desired level of energy stored and the actual level of energy stored. The method further includes the step of determining an engine power change from the energy storage level error and an actual storage power flow, determining an engine power setting from the engine power change, and modifying the engine by the engine power setting.
Inventors
- 👤 O. Kent Thiel
- 👤 Arthur J. Buglione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:38
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/30; B60W; B60W20/00; B60W20/10; B60W20/13; B60K6/42; B60K6/46; B60L; B60L50/00; B60L50/10; B60L50/13; B60L50/30; B60W10/00; B60W10/04; B60W10/06; B60W10/08; B60W10/24; B60W10/26; B60L2240/00; B60L2240/10; B60L2240/12; B60W2710/00; B60W2710/06; B60Y; B60Y2200/00; B60Y2200/10; B60Y2200/11; B60Y2200/114; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/70; Y02T10/7072; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/96
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
141 words
A method of power management control for a hybrid powertrain system, said method comprising the steps of: determining a storage power from a power flow into or out of an energy storage apparatus; determining an actual level of energy stored in the energy storage apparatus; determining a desired level of energy stored in the energy storage apparatus; determining an energy storage level error from a difference between the desired level of energy stored and the actual level of energy stored; determining an engine power change from the energy storage level error and an actual storage power flow by calculating a power level error as a function of the energy storage level error and an actual storage power flow error; calculating and engine power setting based upon the engine power change; and modifying an engine power output by the engine power setting.
Claim 2
Independent Claim
141 words
A method of power management control for a hybrid powertrain system, said method comprising the steps of: determining a storage power from a power flow into or out of an energy storage apparatus; determining an actual level of energy stored in the energy storage apparatus; determining a desired level of energy stored in the energy storage apparatus; determining an energy storage level error from a difference between the desired level of energy stored and the actual level of energy stored; determining an engine power change from the energy storage level error and an actual storage power flow by calculating a power level error as a function of the energy storage level error and an actual storage power flow error; calculating and engine power setting based upon the engine power change; and modifying an engine power output by the engine power setting.
Claim 3
Dependent Claim
17 words
A method as set forth in claim 1 including the step of determining an engine power output.
Claim 4
Dependent Claim
32 words
A method as set forth in claim 1 wherein the desired level of energy stored is instantaneously determined from an energy storage capacity in the energy storage apparatus and a vehicle speed.
Claim 5
Dependent Claim
35 words
A method as set forth in claim 1 wherein the actual storage power flow error comprises multiplying an actual storage power flow into or out of an energy storage apparatus by a predetermined efficiency value.
Claim 6
Dependent Claim
29 words
A method as set forth in claim 4 wherein the actual storage power flow is determined from the engine power setting and a power need of a power user.
Claim 7
Dependent Claim
16 words
A method as set forth in claim 5 wherein the power user is a traction motor.
Claim 8
Dependent Claim
23 words
A method as set forth in claim 5 wherein the actual level of energy stored is determined using the actual storage power flow.
Claim 9
Independent Claim
147 words
A method of power management control for a hybrid powertrain system, said method comprising the steps of: determining a storage power from a power flow into or out of an energy storage apparatus; determining an actual level of energy stored in the energy storage apparatus; determining a desired level of energy stored in the energy storage apparatus; determining an energy storage level error by taking a difference between the desired level of energy stored and the actual level of energy stored; determining a power level error using the energy storage level error and an actual storage power flow error; determining an engine power change based upon the power flow error; calculating a desired engine power setting from the engine power change; calculating a power output of the engine based upon the desired engine power setting; and modifying the engine power output by the desired engine power setting.
Claim 10
Independent Claim
147 words
A method of power management control for a hybrid powertrain system, said method comprising the steps of: determining a storage power from a power flow into or out of an energy storage apparatus; determining an actual level of energy stored in the energy storage apparatus; determining a desired level of energy stored in the energy storage apparatus; determining an energy storage level error by taking a difference between the desired level of energy stored and the actual level of energy stored; determining a power level error using the energy storage level error and an actual storage power flow error; determining an engine power change based upon the power flow error; calculating a desired engine power setting from the engine power change; calculating a power output of the engine based upon the desired engine power setting; and modifying the engine power output by the desired engine power setting.
Claim 11
Dependent Claim
32 words
A method as set forth in claim 8 wherein the desired level of energy stored is instantaneously determined from an energy storage capacity in the energy storage apparatus and a vehicle speed.
Claim 12
Dependent Claim
35 words
A method as set forth in claim 8 wherein the actual storage power flow error comprises multiplying an actual storage power flow into or out of an energy storage apparatus by a predetermined efficiency value.
Claim 13
Dependent Claim
30 words
A method as set forth in claim 8 wherein the actual storage power flow is determined using the desired engine power setting and a power need of a power user.
Claim 14
Dependent Claim
16 words
A method as set forth in claim 11 wherein the power user is a traction motor.
Claim 15
Dependent Claim
23 words
A method as set forth in claim 11 wherein the actual level of energy stored is determined using the actual storage power flow.
Claim 16
Independent Claim
180 words
A method of power management control for a hybrid powertrain system, said method comprising the steps of: determining an actual storage power flow into or out of an energy storage apparatus using an engine power setting and a power need of a power user; determining an actual level of energy stored in the energy storage apparatus using the actual storage power flow; determining a desired level of energy stored in the energy storage apparatus using an energy storage capacity in the energy storage apparatus and a vehicle speed; determining an energy storage level error by taking a difference between the desired level of energy stored and the actual level of energy stored; determining an actual storage power flow error by multiplying the actual storage power flow by a predetermined efficiency value; determining a power level error using the energy storage level error and the actual storage power flow error; determining an engine power change from the power level error; determining an engine power setting from the engine power change; and modifying the engine power output by the engine power setting.
Claim 17
Independent Claim
180 words
A method of power management control for a hybrid powertrain system, said method comprising the steps of: determining an actual storage power flow into or out of an energy storage apparatus using an engine power setting and a power need of a power user; determining an actual level of energy stored in the energy storage apparatus using the actual storage power flow; determining a desired level of energy stored in the energy storage apparatus using an energy storage capacity in the energy storage apparatus and a vehicle speed; determining an energy storage level error by taking a difference between the desired level of energy stored and the actual level of energy stored; determining an actual storage power flow error by multiplying the actual storage power flow by a predetermined efficiency value; determining a power level error using the energy storage level error and the actual storage power flow error; determining an engine power change from the power level error; determining an engine power setting from the engine power change; and modifying the engine power output by the engine power setting.
Claim 18
Dependent Claim
19 words
A method as set forth in claim 14 including the step of determining a power output of the engine.
Claim 19
Dependent Claim
16 words
A method as set forth in claim 14 wherein the power user is a traction motor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-12-06 | 2003-06-07 | 2003-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-06 | 2007-06-07 | 2007-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-06 | 2011-06-07 | 2011-12-07 | $7700.00 | Window Closed / Lapsed |