US5047941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheel acceleration slip control device
Assignee: Akebono Brake Industry Co Ltd
•
Filing: 1990-11-20
•
Granted: 1991-09-10
•
Expires: 2010-11-20
Abstract
Abstract A wheel acceleration slip control device for a vehicle, such as an automobile, in which the degree of opening of the throttle is controlled according to the difference between a driven wheel corresponding speed or driven wheel speed and each of a first and a second threshold values which are determined with respect to a vehicle speed. Control maintains the degree of the degree of opening of the throttle when the driven wheel corresponding speed or driven wheel speed is between the first and second threshold values, whereby excessively large variations of engine torque are prevented, the engine speed can be stably increased, and the vehicle can be smoothly accelerated.
Inventors
- 👤 Hirokazu Seki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:16
CPC Classifications
B; B60; B60K; B60K28/00; B60K28/10; B60K28/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
A wheel acceleration slip control device comprising: threshold value setting means for setting a first threshold value above a vehicle body speed and a second threshold value above said vehicle body speed larger than said first threshold value; driven wheel corresponding speed calculating means for calculating a driven wheel corresponding speed from an engine speed; and control instruction means for controlling a throttle within a degree of opening specified for said throttle by an operator to (1) close the degree of opening of said throttle when said driven wheel corresponding speed is greater than said second threshold value and increasing, (2) open the degree of opening of said throttle when said driven wheel corresponding speed is (a) greater than said second threshold value and decreasing and (b) less than said first threshold value, and (3) hold the degree of opening of said throttle when said driven wheel corresponding speed is between said first threshold value and said second threshold value.
Claim 2
Dependent Claim
160 words
A wheel acceleration slip control device comprising: threshold value setting means for setting a first threshold value above a vehicle body speed and a second threshold value above said vehicle body speed larger than said first threshold value; driven wheel corresponding speed calculating means for calculating a driven wheel corresponding speed from an engine speed; and control instruction means for controlling a throttle within a degree of opening specified for said throttle by an operator to (1) close the degree of opening of said throttle when said driven wheel corresponding speed is greater than said second threshold value and increasing, (2) open the degree of opening of said throttle when said driven wheel corresponding speed is (a) greater than said second threshold value and decreasing and (b) less than said first threshold value, and (3) hold the degree of opening of said throttle when said driven wheel corresponding speed is between said first threshold value and said second threshold value.
Claim 3
Dependent Claim
27 words
The device of claim 1, wherein said threshold value setting means, said driven wheel corresponding speed calculating means and said control instruction means consist of a microcomputer.
Claim 4
Dependent Claim
61 words
The device of claim 1, further comprising: engine speed sensing means for sensing said engine speed; and gear position detecting means for detecting a position of a gear of the vehicle, wherein said driven wheel corresponding speed calculating means outputs said driven wheel corresponding speed in accordance with outputs of said engine speed sensing means and said gear position detecting means.
Claim 5
Dependent Claim
162 words
A wheel acceleration slip control device comprising: threshold value setting means for setting a first threshold value and a second threshold value larger than said first threshold value, respectively, according to a vehicle body speed; driven wheel speed calculating means for calculating a driven wheel speed from an output signal or a revolution sensor provided for a driven wheel; and control instruction means for controlling a throttle within a degree of opening specified for said throttle by an operator to (1) close the degree of opening of said throttle when said driven wheel speed is greater than said second threshold value and increasing, (2) open the degree of the opening of said throttle when said driven wheel speed is (a) greater than said second threshold value and decreasing and (b) less than said first threshold value, and (3) hold the degree of opening of said throttle when said driven wheel speed is between said first threshold value and said second threshold value.
Claim 6
Dependent Claim
162 words
A wheel acceleration slip control device comprising: threshold value setting means for setting a first threshold value and a second threshold value larger than said first threshold value, respectively, according to a vehicle body speed; driven wheel speed calculating means for calculating a driven wheel speed from an output signal or a revolution sensor provided for a driven wheel; and control instruction means for controlling a throttle within a degree of opening specified for said throttle by an operator to (1) close the degree of opening of said throttle when said driven wheel speed is greater than said second threshold value and increasing, (2) open the degree of the opening of said throttle when said driven wheel speed is (a) greater than said second threshold value and decreasing and (b) less than said first threshold value, and (3) hold the degree of opening of said throttle when said driven wheel speed is between said first threshold value and said second threshold value.
Claim 7
Dependent Claim
26 words
The device of claim 4, wherein said threshold value setting means, said driven wheel speed calculating means and said control instruction means consist of a microcomputer.
References Cited (Backward Citations)
GB2129975A
Cited
GB2139757A
Cited
JPS60168122A
Cited
JPS60182020A
Cited
US4681374A
Cited
US4736814A
Cited
US4733760A
Cited
US4771848A
Cited
US4763262A
Cited
US4739856A
Cited
US4788644A
Cited
US4778025A
Cited
US4811808A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-09 | 1995-03-11 | 1995-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-09 | 1999-03-11 | 1999-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-09 | 2003-03-11 | 2003-09-10 | $7700.00 | Window Closed / Lapsed |