Patent US5732376A successfully refreshed from Google Patents.
US5732376A
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Traction control through slip target modifications
Assignee: Ford Global Technologies LLC
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Filing: 1996-03-05
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Granted: 1998-03-24
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Expires: 2016-03-05
Abstract
Abstract Traction control for an internal combustion engine uses the gas pedal position, steering wheel position and velocity to set a wheel slip target during traction control operation.
Inventors
- 👤 Davorin D. Hrovat
- 👤 Minh N. Tran
- 👤 Craig J. Simonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:45
CPC Classifications
B; B60; B60K; B60K28/00; B60K28/10; B60K28/16; B60W; B60W2540/00; B60W2540/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A method of controlling traction of a vehicle having a steering wheel, a gas pedal, a pair of driving wheels, and an internal combustion engine, said method including the steps of: determining whether or not traction control is desired; determining if the vehicle is turning; determining gas pedal position; establishing a predetermined maximum desired target wheel slip; reducing the target wheel slip as a function of gas pedal position; determining steering wheel position; determining steering wheel velocity; setting predetermined steering wheel position; setting a predetermined steering wheel velocity; comparing the determined steering wheel position to the predetermined steering wheel position; further reducing the wheel slip target if the steering wheel position is greater than the predetermined steering wheel position; comparing the determined steering wheel velocity to the predetermined steering wheel velocity; and further reducing the wheel slip target if the steering wheel velocity is greater than the predetermined steering wheel velocity.
Claim 2
Independent Claim
151 words
A method of controlling traction of a vehicle having a steering wheel, a gas pedal, a pair of driving wheels, and an internal combustion engine, said method including the steps of: determining whether or not traction control is desired; determining if the vehicle is turning; determining gas pedal position; establishing a predetermined maximum desired target wheel slip; reducing the target wheel slip as a function of gas pedal position; determining steering wheel position; determining steering wheel velocity; setting predetermined steering wheel position; setting a predetermined steering wheel velocity; comparing the determined steering wheel position to the predetermined steering wheel position; further reducing the wheel slip target if the steering wheel position is greater than the predetermined steering wheel position; comparing the determined steering wheel velocity to the predetermined steering wheel velocity; and further reducing the wheel slip target if the steering wheel velocity is greater than the predetermined steering wheel velocity.
Claim 3
Dependent Claim
46 words
A method of controlling traction as recited in claim 1 further including the steps of: determining if one of the pair of driving wheels is not spinning; and reducing the brake slip trigger level for the spinning wheel control below double the average engine slip target.
Claim 4
Dependent Claim
32 words
A method of controlling traction as recited in claim 2 including the step of reducing the wheel slip target more if the vehicle is turning than if the vehicle is not turning.
References Cited (Backward Citations)
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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) | 2001-03-23 | 2001-09-22 | 2002-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-23 | 2005-09-22 | 2006-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-23 | 2009-09-22 | 2010-03-24 | $7700.00 | Window Closed / Lapsed |