Patent US6061623A successfully refreshed from Google Patents.
US6061623A
Expired / Lapsed
US
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Method and system for pre-positioning wheel torque in a torque based vehicle speed control
Assignee: Ford Global Technologies LLC
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Filing: 1998-07-17
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Granted: 2000-05-09
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Expires: 2018-07-17
Abstract
Abstract A method and system for controlling an internal combustion engine upon initial entry into a speed control mode and upon transitions between dynamic operating modes of a speed control system includes means for determining an actual vehicle acceleration and means for determining an actual wheel torque. A controller determines an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque and controls the torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle.
Inventors
- 👤 Richard John Hippley
- 👤 Marek Jaroslaw Jastrzebski
- 👤 Kevin Joseph Rzemien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:51
CPC Classifications
B; B60; B60K; B60K31/00; B60K31/02; B60K31/04; B60K31/042; B60K31/045; B60K31/047; B60W; B60W2510/00; B60W2510/06; B60W2510/0604; B60W2510/0614; B60W2510/0628; B60W2510/0638; B60W2510/068; B60W2520/00; B60W2520/10; B60W2520/28; B60W2530/00; B60W2530/16; B60W2710/00; B60W2710/06; B60W2710/0666
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
124 words
For use with a vehicle having a torque-based speed control system which controls an internal combustion engine to control the speed of the vehicle, a method for controlling the internal combustion engine for a plurality of operating modes including an initial entry into speed control mode and a plurality of transitional dynamic operating modes, the method comprising: determining an actual vehicle acceleration; determining an actual wheel torque; determining an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque; and controlling torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle upon said initial entry into speed control mode and upon transitions between said dynamic operating modes.
Claim 2
Dependent Claim
124 words
For use with a vehicle having a torque-based speed control system which controls an internal combustion engine to control the speed of the vehicle, a method for controlling the internal combustion engine for a plurality of operating modes including an initial entry into speed control mode and a plurality of transitional dynamic operating modes, the method comprising: determining an actual vehicle acceleration; determining an actual wheel torque; determining an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque; and controlling torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle upon said initial entry into speed control mode and upon transitions between said dynamic operating modes.
Claim 3
Dependent Claim
33 words
The method as recited in claim 1 wherein said step of determining the initial desired wheel torque further comprises determining a desired vehicle acceleration based on one of the plurality of operating modes.
Claim 4
Dependent Claim
30 words
The method as recited in claim 2 wherein said step of determining the initial desired wheel torque further comprises determining a wheel torque error based on the actual wheel torque.
Claim 5
Dependent Claim
74 words
The method as recited in claim 3 wherein said step of determining the initial desired wheel torque comprises determining the initial desired wheel torque according to the following: TQinit=TQact-K(Aact-Ades)-TQerr, where TQinit corresponds to the initial desired wheel torque, TQact corresponds to the actual wheel torque, Aact corresponds to the actual vehicle acceleration, Ades corresponds to the desired vehicle acceleration, TQerr corresponds to the wheel torque error, and K is a predetermined acceleration compensation constant.
Claim 6
Dependent Claim
27 words
The method as recited in claim 4 wherein the vehicle has a mass and wherein the acceleration compensation constant is based on the mass of the vehicle.
Claim 7
Dependent Claim
23 words
The method as recited in claim 1 wherein said step of controlling torque generated by the engine comprises controlling airflow to the engine.
Claim 8
Dependent Claim
26 words
The method as recited in claim 1 wherein said step of controlling torque generated by the engine comprises controlling quantity of fuel delivered to the engine.
Claim 9
Dependent Claim
22 words
The method as recited in claim 1 wherein said step of controlling torque generated by the engine comprises controlling spark timing .
Claim 10
Dependent Claim
143 words
For use with a vehicle having a torque-based speed control system which controls an internal combustion engine to control the speed of the vehicle, a computer readable storage medium having stored therein instructions executable by a computer to control the internal combustion engine for a plurality of operating modes including an initial entry into speed control mode and a plurality of transitional dynamic operating modes, the medium comprising: instructions for determining an actual vehicle acceleration; instructions for determining an actual wheel torque; instructions for determining an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque; and instructions for controlling torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle upon said initial entry into speed control mode and upon transitions between said dynamic operating modes.
Claim 11
Dependent Claim
143 words
For use with a vehicle having a torque-based speed control system which controls an internal combustion engine to control the speed of the vehicle, a computer readable storage medium having stored therein instructions executable by a computer to control the internal combustion engine for a plurality of operating modes including an initial entry into speed control mode and a plurality of transitional dynamic operating modes, the medium comprising: instructions for determining an actual vehicle acceleration; instructions for determining an actual wheel torque; instructions for determining an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque; and instructions for controlling torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle upon said initial entry into speed control mode and upon transitions between said dynamic operating modes.
Claim 12
Dependent Claim
33 words
The medium of claim 9 wherein the instructions for determining the initial desired wheel torque further comprises instructions for determining a desired vehicle acceleration based on one of the plurality of operating modes.
Claim 13
Dependent Claim
30 words
The medium of claim 10 wherein the instructions for determining the initial desired wheel torque further comprise instructions for determining a wheel torque error based on the actual wheel torque.
Claim 14
Dependent Claim
74 words
The medium of claim 11 wherein the instructions for determining the initial desired wheel torque comprises instructions for determining the initial desired wheel torque according to the following: TQinit=TQact-K(Aact-Ades)-TQerr, where TQinit corresponds to the initial desired wheel torque, TQact corresponds to the actual wheel torque, Aact corresponds to the actual vehicle acceleration, Ades corresponds to the desired vehicle acceleration, TQerr corresponds to the wheel torque error, and K is a predetermined acceleration compensation constant.
Claim 15
Dependent Claim
133 words
For use with a vehicle having a torque-based speed control system which controls an internal combustion engine to control the speed of the vehicle, a system for controlling the internal combustion engine for a plurality of operating modes including an initial entry into speed control mode and a plurality of transitional dynamic operating modes, the system comprising: means for determining an actual vehicle acceleration; means for determining an actual wheel torque; and a controller operative to determine an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque, and control torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle upon said initial entry into speed control mode and upon transitions between said dynamic operating modes.
Claim 16
Dependent Claim
133 words
For use with a vehicle having a torque-based speed control system which controls an internal combustion engine to control the speed of the vehicle, a system for controlling the internal combustion engine for a plurality of operating modes including an initial entry into speed control mode and a plurality of transitional dynamic operating modes, the system comprising: means for determining an actual vehicle acceleration; means for determining an actual wheel torque; and a controller operative to determine an initial desired wheel torque based on the actual vehicle acceleration and the actual wheel torque, and control torque generated by the engine based on the initial desired wheel torque so as to smoothly control the speed of the vehicle upon said initial entry into speed control mode and upon transitions between said dynamic operating modes.
Claim 17
Dependent Claim
35 words
The system as recited in claim 13 wherein the controller, in determining the initial desired wheel torque, is further operative to determine a desired vehicle acceleration based on one of the plurality of operating modes.
Claim 18
Dependent Claim
32 words
The system as recited in claim 14 wherein the controller, in determining the initial desired wheel torque, is further operative to determine a wheel torque error based on the actual wheel torque.
Claim 19
Dependent Claim
76 words
The system as recited in claim 15 wherein the controller, in determining the initial desired wheel torque, is operative to determine the initial desired wheel torque according to the following: TQinit=TQact-K(Aact-Ades)-TQerr, where TQinit corresponds to the initial desired wheel torque, TQact corresponds to the actual wheel torque, Aact corresponds to the actual vehicle acceleration, Ades corresponds to the desired vehicle acceleration, TQerr corresponds to the wheel torque error, and K is a predetermined acceleration compensation constant.
Claim 20
Dependent Claim
27 words
The system as recited in claim 16 wherein the vehicle has a mass and wherein the acceleration compensation constant is based on the mass of the vehicle.
Claim 21
Dependent Claim
25 words
The system as recited in claim 13 wherein the controller, in controlling torque generated by the engine, is operative to control airflow to the engine.
Claim 22
Dependent Claim
28 words
The system as recited in claim 13 wherein the controller, in controlling torque generated by the engine, is operative to control quantity of fuel delivered to the engine.
Claim 23
Dependent Claim
23 words
The system as recited in claim 13 wherein the controller, in controlling torque generated by the engine, is operative to control spark timing.
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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) | 2003-05-09 | 2003-11-08 | 2004-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-09 | 2007-11-08 | 2008-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-09 | 2011-11-08 | 2012-05-09 | $7700.00 | Window Closed / Lapsed |