US5079709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traction control method and apparatus for a vehicle
Assignee: Akebono Brake Industry Co Ltd
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Filing: 1990-12-28
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Granted: 1992-01-07
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Expires: 2010-12-28
Abstract
Abstract A method of controlling a traction of a vehicle, comprising the steps of reading a value determining a throttle opening and closing speed from a first throttle control map from which said throttle opening and closing speed are determined on the basis of a difference in speed between a driving and non-driving wheel speeds and of an acceleration of the driving wheel, and converting said value to an actual throttle opening and closing speed with a conversion rate corresponding to an acceleration of the non-driving wheel thereby controlling the throttle of the vehicle.
Inventors
- 👤 Atsushi Hirako
- 👤 Akihiro Shirata
- 👤 Naoyuki Hagiya
- 👤 Yoshiaki Yabe
- 👤 Shigeki Moride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:20
CPC Classifications
B; B60; B60K; B60K28/00; B60K28/10; B60K28/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
115 words
A method of controlling a traction of a vehicle, comprising the steps of: reading a value from a first control map, said value corresponding to a difference between a driving wheel speed and a non-driving wheel speed and to a driving wheel acceleration; and converting said value to one of a throttle opening speed and a throttle closing speed in accordance with a conversation rate corresponding to a non-driving wheel acceleration by reading a value from a second control map in accordance with said value read from said first control map and said non-driving wheel acceleration, said throttle closing speed being inversely proportional to said non-driving wheel acceleration, to control said traction of said vehicle.
Claim 2
Independent Claim
115 words
A method of controlling a traction of a vehicle, comprising the steps of: reading a value from a first control map, said value corresponding to a difference between a driving wheel speed and a non-driving wheel speed and to a driving wheel acceleration; and converting said value to one of a throttle opening speed and a throttle closing speed in accordance with a conversation rate corresponding to a non-driving wheel acceleration by reading a value from a second control map in accordance with said value read from said first control map and said non-driving wheel acceleration, said throttle closing speed being inversely proportional to said non-driving wheel acceleration, to control said traction of said vehicle.
Claim 3
Dependent Claim
31 words
The method according to claim 1, wherein said throttle closing speed is inversely proportional to said non-driving wheel acceleration and said throttle opening speed is proportional to said non-driving wheel acceleration.
Claim 4
Dependent Claim
58 words
The method according to claim 1, wherein the step of converting said value to said throttle opening speed includes the substep of reading a value from a third control map in accordance with said value read from said first control map and said non-driving wheel acceleration wherein said throttle opening speed is proportional to said non-driving wheel acceleration.
Claim 5
Independent Claim
90 words
A method of controlling a traction of a vehicle, comprising the steps of: reading a value from a first control map, said value corresponding to a difference between a driving wheel speed and a non-driving wheel speed and to a driving wheel acceleration; and converting said value to one of a throttle opening speed and a throttle closing speed in accordance with a conversation rate corresponding to a non-driving wheel acceleration and a gear position of a power transmission device of said vehicle to control said traction of said vehicle.
Claim 6
Independent Claim
90 words
A method of controlling a traction of a vehicle, comprising the steps of: reading a value from a first control map, said value corresponding to a difference between a driving wheel speed and a non-driving wheel speed and to a driving wheel acceleration; and converting said value to one of a throttle opening speed and a throttle closing speed in accordance with a conversation rate corresponding to a non-driving wheel acceleration and a gear position of a power transmission device of said vehicle to control said traction of said vehicle.
Claim 7
Dependent Claim
31 words
The method according to claim 4, wherein said throttle closing speed is inversely proportional to said non-driving wheel acceleration and said throttle opening speed is proportional to said non-driving wheel acceleration.
Claim 8
Dependent Claim
60 words
The method according to claim 4, wherein the step of converting said value to said throttle closing speed includes the substep of reading a value from a second control map in accordance with said value read from said first control map and said non-driving wheel acceleration, and wherein said throttle closing speed is inversely proportional to said non-driving wheel acceleration.
Claim 9
Dependent Claim
58 words
The method according to claim 4, wherein the step of converting said value to said throttle opening speed includes the substep of reading a value from a third control map in accordance with said value read from said first control map and said non-driving wheel acceleration wherein said throttle opening speed is proportional to said non-driving wheel acceleration.
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |