Patent US5029678A successfully refreshed from Google Patents.
US5029678A
Expired / Lapsed
US
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Automatic clutch control apparatus
Assignee: Isuzu Motors Ltd
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Filing: 1988-12-09
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Granted: 1991-07-09
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Expires: 2008-12-09
Abstract
Abstract An automatic clutch control apparatus controls a clutch on a motor vehicle based on a learned position to fully engage the clutch and a learned position to start engaging the clutch. The automatic clutch control apparatus includes means for determining a basic amount of engagement of the clutch based on operating conditions of the motor vehicle, and means for determining an adjusting amount corresponding to the difference between the position to start engaging the clutch and the position to fully engage the clutch. The basic amount of engagement of the clutch is corrected by the adjusting amount to determine an amount of engagement of the clutch.
Inventors
- 👤 Toshifumi Koshizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:53
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/12; F16D25/126; B; B60; B60W; B60W30/00; B60W30/18; B60W30/18009; B60W30/18027; F16D48/00; F16D48/06; F16D48/066; B60W2510/00; B60W2510/06; B60W2510/0638; B60W2510/10; B60W2510/1015; B60W2540/00; B60W2540/10; B60W2540/16; B60W2710/00; B60W2710/02; B60W2710/021; B60W2710/022; B60W2710/025; F16D2500/00; F16D2500/10; F16D2500/104; F16D2500/10406; F16D2500/10412; F16D2500/10443; F16D2500/1045; F16D2500/30; F16D2500/302; F16D2500/3026; F16D2500/306; F16D2500/3067; F16D2500/308; F16D2500/3081; F16D2500/30816; F16D2500/31; F16D2500/3108; F16D2500/314; F16D2500/31406; F16D2500/3144; F16D2500/50; F16D2500/502; F16D2500/50245; F16D2500/50266; F16D2500/50269; F16D2500/50272; F16D2500/70; F16D2500/702; F16D2500/70252; F16D2500/70264; F16D2500/706; F16D2500/70605
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
An automatic clutch control apparatus for use on a motor vehicle, having a clutch stroke sensor for detecting an operating position of a clutch and learning means for determining a learned position to fully engage the clutch and a learned position to start engaging the clutch based on a signal from the clutch stroke sensor, said automatic clutch control apparatus comprising: means for determining a basic amount of engagement of the clutch based on operating conditions of the motor vehicle; calculating means for determining a difference between the learned position to start engaging the clutch and the learned position to fully engage the clutch; means for determining an adjusting amount corresponding to said difference determined by said calculating means; and means for determining an amount of engagement of the clutch based on said basic amount of engagement of the clutch and said adjusting amount.
Claim 2
Dependent Claim
144 words
An automatic clutch control apparatus for use on a motor vehicle, having a clutch stroke sensor for detecting an operating position of a clutch and learning means for determining a learned position to fully engage the clutch and a learned position to start engaging the clutch based on a signal from the clutch stroke sensor, said automatic clutch control apparatus comprising: means for determining a basic amount of engagement of the clutch based on operating conditions of the motor vehicle; calculating means for determining a difference between the learned position to start engaging the clutch and the learned position to fully engage the clutch; means for determining an adjusting amount corresponding to said difference determined by said calculating means; and means for determining an amount of engagement of the clutch based on said basic amount of engagement of the clutch and said adjusting amount.
Claim 3
Dependent Claim
71 words
An automatic clutch control apparatus, comprising: engagement means for determining an operating amount of clutch engagement responsive to motor operating conditions; adjusting means for determining an adjusting amount of clutch engagement from a starting learned position to start engaging the clutch and an engaged learned position of the clutch when fully engaged; and means for determining an actual amount of clutch engagement by combining the operating amount and the adjusting amount.
Claim 4
Dependent Claim
71 words
An automatic clutch control apparatus, comprising: engagement means for determining an operating amount of clutch engagement responsive to motor operating conditions; adjusting means for determining an adjusting amount of clutch engagement from a starting learned position to start engaging the clutch and an engaged learned position of the clutch when fully engaged; and means for determining an actual amount of clutch engagement by combining the operating amount and the adjusting amount.
Claim 5
Dependent Claim
74 words
An automatic clutch control method, comprising the steps of: (a) determining an operating amount of clutch engagement in dependence on motor operating conditions: (b) determining an adjustment amount corresponding to a difference between a learned clutch start engagement position and a learned clutch fully engaged position; (c) producing an actual amount of clutch engagement as an arithmetic combination of the operating and adjustment amounts; and (d) adjusting the clutch responsive to the actual amount.
Claim 6
Dependent Claim
74 words
An automatic clutch control method, comprising the steps of: (a) determining an operating amount of clutch engagement in dependence on motor operating conditions: (b) determining an adjustment amount corresponding to a difference between a learned clutch start engagement position and a learned clutch fully engaged position; (c) producing an actual amount of clutch engagement as an arithmetic combination of the operating and adjustment amounts; and (d) adjusting the clutch responsive to the actual amount.
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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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |