Patent US5020645A successfully refreshed from Google Patents.
US5020645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle clutch control system
Assignee: Isuzu Motors Ltd
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Filing: 1989-11-21
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Granted: 1991-06-04
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Expires: 2009-11-21
Abstract
Abstract A system for controlling the clutch of an automotive vehicle includes clutch engagement amount deciding means for deciding an amount of clutch engagement based on the braking force applied by a brake device. A clutch actuator is controlled based on the amount of clutch engagement decided by the deciding means, so that the vehicle can be made to travel at very low velocity merely by operating a brake pedal.
Inventors
- 👤 Yuki Sasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:11
CPC Classifications
B; B60; B60W; B60W30/00; B60W30/18; B60W30/18009; B60W30/18063; B60W10/00; B60W10/02; B60W10/18; B60W30/1819; F; F16; F16D; F16D48/00; F16D48/06; B60W2510/00; B60W2510/10; B60W2510/1005; B60W2540/00; B60W2540/12; B60W2552/00; B60W2552/15; B60W2710/00; B60W2710/02; B60W2710/021; B60W2710/022; F16D2500/00; F16D2500/10; F16D2500/104; F16D2500/10406; F16D2500/10412; F16D2500/30; F16D2500/302; F16D2500/3023; F16D2500/3026; F16D2500/306; F16D2500/3067; F16D2500/308; F16D2500/30806; F16D2500/3081; F16D2500/30816; F16D2500/31; F16D2500/3101; F16D2500/312; F16D2500/3125; F16D2500/3127; F16D2500/314; F16D2500/31406; F16D2500/31426; F16D2500/3144; F16D2500/3146; F16D2500/31466; F16D2500/31473; F16D2500/31493; F16D2500/50; F16D2500/502; F16D2500/50206; F16D2500/70; F16D2500/702; F16D2500/70205; F16D2500/70211; F16D2500/70241; F16D2500/70252; F16D2500/7027; F16D2500/704; F16D2500/70402; F16D2500/7041
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
189 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, an accelerator pedal for controlling fuel to be supplied to the engine, a brake device for causing a braking force to act upon wheels of the vehicle, and a parking brake, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the amount of depression of said accelerator pedal; means for sensing operation of said parking brake; means for detecting the braking force applied by braking operation of said brake device; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device, said amount of clutch engagement being smaller as the braking force is greater and being gradually greater up to a partly clutch engaging region as the braking force is smaller; and means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means when the amount of depression of the accelerator pedal is zero and parking brake is not applied.
Claim 2
Dependent Claim
189 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, an accelerator pedal for controlling fuel to be supplied to the engine, a brake device for causing a braking force to act upon wheels of the vehicle, and a parking brake, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the amount of depression of said accelerator pedal; means for sensing operation of said parking brake; means for detecting the braking force applied by braking operation of said brake device; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device, said amount of clutch engagement being smaller as the braking force is greater and being gradually greater up to a partly clutch engaging region as the braking force is smaller; and means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means when the amount of depression of the accelerator pedal is zero and parking brake is not applied.
Claim 3
Dependent Claim
70 words
The control system according to claim 1, further comprising gear speed detecting means for detecting an operating gear speed of the transmission, wherein said clutch engagement amount deciding means has control maps for setting a clutch engagement amount corresponding to a braking force for each gear speed, with the clutch engagement amount being set based on a control map of a gear speed detected by said gear speed detecting means.
Claim 4
Dependent Claim
78 words
The control system according to claim 1, further comprising road gradient detecting means for detecting a gradient of a road surface on which the vehicle is situated, wherein said clutch engagement amount deciding means has means for setting a corrective value corresponding to the gradient of the road surface, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to the road surface gradient detected by said road gradient detecting means.
Claim 5
Dependent Claim
62 words
The control system according to claim 1, further comprising creep adjusting means for adjusting amount of creep, wherein said clutch engagement amount deciding means has means for setting a corrective value corresponding to a set creep amount, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said creep adjusting means.
Claim 6
Dependent Claim
70 words
The control system according to claim 1, further comprising load status setting means for setting the status of a load on the vehicle, wherein said clutch engagement amount deciding means has means for setting a corrective value corresponding to the status of a load, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said load status setting means.
Claim 7
Dependent Claim
210 words
A vehicle clutch control system having an engine mounted in automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, an accelerator pedal for controlling fuel to be supplied to the engine, a brake device for causing a braking force to act upon wheels of the vehicle, and a braking force maintaining device for maintaining the braking force caused to act upon the wheels by the brake device, and a parking brake, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the amount of depression of said accelerator pedal; means for sensing operation of said parking brake means for detecting the braking force applied by braking operation of said brake device; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device, said amount of clutch engagement being smaller as the braking force is greater and being gradually greater up to a partly clutch engaging region as the braking force is smaller; and means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means when the amount of depression of the accelerator pedal is zero and the parking brake is not applied.
Claim 8
Dependent Claim
210 words
A vehicle clutch control system having an engine mounted in automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, an accelerator pedal for controlling fuel to be supplied to the engine, a brake device for causing a braking force to act upon wheels of the vehicle, and a braking force maintaining device for maintaining the braking force caused to act upon the wheels by the brake device, and a parking brake, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the amount of depression of said accelerator pedal; means for sensing operation of said parking brake means for detecting the braking force applied by braking operation of said brake device; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device, said amount of clutch engagement being smaller as the braking force is greater and being gradually greater up to a partly clutch engaging region as the braking force is smaller; and means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means when the amount of depression of the accelerator pedal is zero and the parking brake is not applied.
Claim 9
Dependent Claim
70 words
The control system according to claim 6, further comprising gear speed detecting means for detecting an operating gear speed of the transmission, wherein said clutch engagement amount deciding means has control maps for setting a clutch engagement amount corresponding to a braking force for each gear speed, with the clutch engagement amount being set based on a control map of a gear speed detected by said gear speed detecting means.
Claim 10
Dependent Claim
78 words
The control systems according to claim 7, further comprising road gradient detecting means for detecting the gradient of a road surface on which the vehicle is situated, wherein said clutch engagement amount deciding means has means for setting a corrective value corresponding to a gradient of the road surface, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to the road surface gradient detected by said road gradient detecting means.
Claim 11
Dependent Claim
62 words
The control systems according to claim 6, further comprising creep adjusting means for adjusting amount of creep, wherein said clutch engagement amount deciding means has means for setting a corrective value corresponding to a set creep amount, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said creep adjusting means.
Claim 12
Dependent Claim
70 words
The control system according to claim 6, further comprising load status setting means for setting the status of a load on the vehicle, wherein said clutch engagement amount deciding means has means for setting a corrective value corresponding to the status of a load, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said load status setting means.
Claim 13
Dependent Claim
177 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, and a brake device for causing a braking force to act upon wheels of the vehicle during a braking operation, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the braking force applied by said braking operation; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device; means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means; and road gradient detecting means for detecting a gradient of a road surface on which the vehicle is situated, wherein said clutch engagement deciding means has means for setting a corrective value corresponding to the gradient of the road surface, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to the road surface gradient detected by said road gradient detecting means.
Claim 14
Dependent Claim
177 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, and a brake device for causing a braking force to act upon wheels of the vehicle during a braking operation, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the braking force applied by said braking operation; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device; means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means; and road gradient detecting means for detecting a gradient of a road surface on which the vehicle is situated, wherein said clutch engagement deciding means has means for setting a corrective value corresponding to the gradient of the road surface, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to the road surface gradient detected by said road gradient detecting means.
Claim 15
Dependent Claim
153 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, and a brake device for causing a braking force to act upon wheels of the vehicle during a braking operation, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the braking force applied by said braking operation; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device; means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means; and said clutch engagement amount deciding means has means for setting a corrective value corresponding to a st creep amount, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said creep adjusting means.
Claim 16
Dependent Claim
153 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, and a brake device for causing a braking force to act upon wheels of the vehicle during a braking operation, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the braking force applied by said braking operation; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device; means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means; and said clutch engagement amount deciding means has means for setting a corrective value corresponding to a st creep amount, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said creep adjusting means.
Claim 17
Dependent Claim
154 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, and a brake device for causing a braking force to act upon wheels of the vehicle during a braking operation, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the braking force applied by said braking operation; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device; means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means; and said clutch engagement deciding means has means for setting a corrective value corresponding to the status of a load, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said load status setting means.
Claim 18
Dependent Claim
154 words
A vehicle clutch control system having an engine mounted in an automotive vehicle, a transmission, a clutch disposed between the engine and the transmission, and a brake device for causing a braking force to act upon wheels of the vehicle during a braking operation, the system comprising: a clutch actuator for engaging and disengaging said clutch; means for detecting the braking force applied by said braking operation; clutch engagement deciding means for deciding an amount of clutch engagement based on the braking force applied by said brake device; means for controlling said clutch actuator based on the amount of clutch engagement decided by said clutch engagement deciding means; and said clutch engagement deciding means has means for setting a corrective value corresponding to the status of a load, with a clutch engagement amount set based on braking force being corrected by a corrective value corresponding to a signal from said load status setting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |