US5065851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch control unit
Assignee: Bosch Corp
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Filing: 1990-07-23
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Granted: 1991-11-19
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Expires: 2010-07-23
Abstract
Abstract A clutch control unit includes a clutch learning unit (4b) for determining a clutch connection characteristic (M) based on the clutch position at which the number of revolutions of an output shaft of the clutch reaches a predetermined value when the clutch is moved toward connection from a predetermined learning starting point and a clutch off detector (4c) for determining a clutch off point at which the number of revolutions of the output shaft is zero by moving the clutch toward disconnection and taking as a new learning starting point the clutch off point or a point made by adding a small offset value to the clutch off point, thereby controlling the clutch based on the clutch connection characteristic (M).
Inventors
- 👤 Masuhiro Otsuka
- 👤 Hiromi Kono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:07
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D48/066; B; B60; B60W; B60W2510/00; B60W2510/10; B60W2510/1015; F16D2500/00; F16D2500/30; F16D2500/302; F16D2500/3026; F16D2500/304; F16D2500/30401; F16D2500/306; F16D2500/3067; F16D2500/3069; F16D2500/308; F16D2500/3081; F16D2500/30816; F16D2500/3082; F16D2500/30825; F16D2500/314; F16D2500/31406; F16D2500/31426; F16D2500/3144; F16D2500/3146; F16D2500/31466; F16D2500/316; F16D2500/3166; F16D2500/50; F16D2500/502; F16D2500/50245; F16D2500/50266; F16D2500/50269; F16D2500/51; F16D2500/5118; F16D2500/70; F16D2500/702; F16D2500/70205; F16D2500/70235; F16D2500/70252; F16D2500/70264; F16D2500/70282; F16D2500/704; F16D2500/70402; F16D2500/7041; F16D2500/706; F16D2500/70605; F16D2500/7061; F16D2500/70663; F16H; F16H61/00; F16H2061/0075; F16H2061/0087; F16H59/00; F16H59/36; F16H59/38; F16H59/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A clutch control system comprising: a clutch; a clutch control unit for controlling said clutch; a sensor for detecting the number of revolutions of an output shaft of said clutch; a clutch learning unit for determining a clutch position at which said number of revolutions is equal to a predetermined value by moving said clutch toward connection from a predetermined learning starting point and controlling said clutch control unit based on said clutch position thus determined; a clutch off point detector for determining, if said number of revolutions is not zero when said clutch is at said learning starting point, a clutch off point at which said number of revolutions is zero by moving said clutch toward disconnection until said number of revolutions becomes zero; and said clutch learning unit starting a learning activity by taking said clutch off point as a new learning starting point.
Claim 2
Dependent Claim
146 words
A clutch control system comprising: a clutch; a clutch control unit for controlling said clutch; a sensor for detecting the number of revolutions of an output shaft of said clutch; a clutch learning unit for determining a clutch position at which said number of revolutions is equal to a predetermined value by moving said clutch toward connection from a predetermined learning starting point and controlling said clutch control unit based on said clutch position thus determined; a clutch off point detector for determining, if said number of revolutions is not zero when said clutch is at said learning starting point, a clutch off point at which said number of revolutions is zero by moving said clutch toward disconnection until said number of revolutions becomes zero; and said clutch learning unit starting a learning activity by taking said clutch off point as a new learning starting point.
Claim 3
Dependent Claim
154 words
A clutch control system comprising: a clutch; a clutch control unit for controlling said clutch; a sensor for detecting the number of revolutions of an output shaft of said clutch; a clutch learning unit for determining a clutch position at which said number of revolutions is equal to a predetermined value by moving said clutch toward connection from a predetermined learning starting point and controlling said clutch control unit based on said clutch position thus determined; a clutch off point detector for determining, if said number of revolutions is not zero when said clutch is at said learning starting point, a clutch off point at which said number of revolutions is zero by moving said clutch toward disconnection until said number of revolutions becomes zero; and said clutch learning unit starts a learning activity by taking a sum of said clutch off point and a predetermined offset value as a new learning starting point.
Claim 4
Dependent Claim
154 words
A clutch control system comprising: a clutch; a clutch control unit for controlling said clutch; a sensor for detecting the number of revolutions of an output shaft of said clutch; a clutch learning unit for determining a clutch position at which said number of revolutions is equal to a predetermined value by moving said clutch toward connection from a predetermined learning starting point and controlling said clutch control unit based on said clutch position thus determined; a clutch off point detector for determining, if said number of revolutions is not zero when said clutch is at said learning starting point, a clutch off point at which said number of revolutions is zero by moving said clutch toward disconnection until said number of revolutions becomes zero; and said clutch learning unit starts a learning activity by taking a sum of said clutch off point and a predetermined offset value as a new learning starting point.
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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) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |