US5065849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for correcting data used for a clutch control operation
Assignee: Bosch Corp
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Filing: 1990-04-04
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Granted: 1991-11-19
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Expires: 2010-04-04
Abstract
Abstract In a method for correcting clutch data used for controlling the engaging/disengaging operation of a friction type vehicle clutch, the meet position data among the clutch data is updated by a learning operation at each operation of a predetermined operation member of the vehicle, and the updated meet position data is corrected in accordance with the engine speed during the actual operation of the clutch, each time the vehicle is driven off, whereby appropriate correction of the clutch data can be carried out at suitable time intervals.
Inventors
- 👤 Hiromi Kono
- 👤 Masuhiro Ohtsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:02
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D48/066; B; B60; B60W; B60W2510/00; B60W2510/06; B60W2510/0638; B60W2520/00; B60W2520/10; B60W2540/00; B60W2540/10; 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; F16D2500/30806; F16D2500/30808; F16D2500/31; F16D2500/3108; F16D2500/314; F16D2500/31406; F16D2500/3144; F16D2500/50; F16D2500/502; F16D2500/50245; F16D2500/50266; F16D2500/50269; F16D2500/70; F16D2500/702; F16D2500/70205; F16D2500/70235; F16D2500/706; F16D2500/70605; F16D2500/70663; F16H; F16H61/00; F16H2061/0075; F16H2061/0087
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
148 words
A method for correcting clutch data relating to a friction type clutch connected with an internal combustion engine for carrying out an engaging operation for driving off a vehicle with a transmission system, the clutch data including meet position data representing a meet position of the clutch, said method comprising the steps of: updating the meet position data by a predetermined learning operation each time a member for selecting an operation mode of the transmission system is set to a prescribed selected state; detecting an operation condition of the internal combustion engine on the basis of a rotational speed of the engine during the engaging operation of the clutch each time the engaging operation of the clutch for driving the vehicle off is carried out; and correcting the meet position data obtained in said updating step in accordance with the detected operation condition obtained in said detecting step.
Claim 2
Independent Claim
148 words
A method for correcting clutch data relating to a friction type clutch connected with an internal combustion engine for carrying out an engaging operation for driving off a vehicle with a transmission system, the clutch data including meet position data representing a meet position of the clutch, said method comprising the steps of: updating the meet position data by a predetermined learning operation each time a member for selecting an operation mode of the transmission system is set to a prescribed selected state; detecting an operation condition of the internal combustion engine on the basis of a rotational speed of the engine during the engaging operation of the clutch each time the engaging operation of the clutch for driving the vehicle off is carried out; and correcting the meet position data obtained in said updating step in accordance with the detected operation condition obtained in said detecting step.
Claim 3
Dependent Claim
58 words
A method as claimed in claim 1, wherein the detected operation condition is whether or not the rotational speed of the engine during the engaging operation of the clutch is in a predetermined speed range, and the meet position data obtained in said updating step is corrected in accordance with said detected operation condition of the engine speed.
Claim 4
Dependent Claim
59 words
A method as claimed in claim 2, wherein an upper limit of the predetermined speed range is set at a higher speed than an idling speed of the engine by a prescribed level, and a lower limit of the predetermined speed range is set at a lower speed than the idling speed of the engine by another prescribed level.
Claim 5
Dependent Claim
40 words
A method as claimed in claim 3, wherein the meet position data is corrected so as to reduce the engine speed when it is detected that the engine speed exceeds the upper limit during the engaging operation of the clutch.
Claim 6
Dependent Claim
41 words
A method as claimed in claim 3, wherein the meet position data is corrected so as to increase the engine speed when it is detected that the engine speed falls below the lower limit during the engaging operation of the clutch.
Claim 7
Dependent Claim
38 words
A method as claimed in claim 4, wherein the meet position data is corrected by a predetermined magnitude each time it is detected that the engine speed exceeds the upper limit during the engaging operation of the clutch.
Claim 8
Dependent Claim
39 words
A method as claimed in claim 5, wherein the meet position data is corrected by a predetermined magnitude each time it is detected that the engine speed falls below the lower limit during the engaging operation of the clutch.
Claim 9
Independent Claim
150 words
A method for correcting clutch data used for controlling a friction type clutch connected with an internal combustion engine for carrying out an engaging operation for driving off a vehicle with a transmission system, the clutch data including meet position data representing a meet position of the clutch, said method comprising the steps of: updating the meet position data by a predetermined learning operation each time a member for selecting an operation mode of the transmission system is set to a neutral position; obtaining information concerning change in the clutch data on the basis of a rotational speed of the engine during the engaging operation of the clutch each time the engaging operation of the clutch for driving the vehicle off is carried out; and correcting the clutch data in accordance with the meet position data obtained in said updating step and the information obtained in said information obtaining step.
Claim 10
Independent Claim
150 words
A method for correcting clutch data used for controlling a friction type clutch connected with an internal combustion engine for carrying out an engaging operation for driving off a vehicle with a transmission system, the clutch data including meet position data representing a meet position of the clutch, said method comprising the steps of: updating the meet position data by a predetermined learning operation each time a member for selecting an operation mode of the transmission system is set to a neutral position; obtaining information concerning change in the clutch data on the basis of a rotational speed of the engine during the engaging operation of the clutch each time the engaging operation of the clutch for driving the vehicle off is carried out; and correcting the clutch data in accordance with the meet position data obtained in said updating step and the information obtained in said information obtaining step.
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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 |