US5088348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust brake control of motor vehicle with automatic transmission
Assignee: JATCO Ltd
•
Filing: 1991-03-14
•
Granted: 1992-02-18
•
Expires: 2011-03-14
Abstract
Abstract An exhaust brake control ensures a shock less shift after the automatic transmission has been conditioned for engine brake running state by rendering an exhaust brake system inoperable temporarily for a predetermined period of time when the shift is in progress in the automatic transmission.
Inventors
- 👤 Michiaki Hiramuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:41
CPC Classifications
F; F02; F02D; F02D9/00; F02D9/04; F02D9/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
In a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system: means for generating a command for the engine brake running state; and means for rendering the exhaust brake system inoperable temporarily for a predetermined period of time when a predetermined shift is in progress in the automatic transmission after said command has been generated.
Claim 2
Dependent Claim
97 words
In a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system: means for generating a command for the engine brake running state; and means for rendering the exhaust brake system inoperable temporarily for a predetermined period of time when a predetermined shift is in progress in the automatic transmission after said command has been generated.
Claim 3
Dependent Claim
33 words
A motor vehicle as claimed in claim 1, further comprising: means for detecting a vehicle speed of the motor vehicle and generating a vehicle speed indicative signal indicative of said vehicle speed detected.
Claim 4
Dependent Claim
22 words
A motor vehicle as claimed in claim 2, wherein said predetermined period of time is variable with said vehicle speed indicative signal.
Claim 5
Dependent Claim
134 words
In a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system: means for generating a command for the engine brake running state; means for detecting a vehicle speed of the motor vehicle and generating a vehicle speed indicative signal indicative of said vehicle speed detected; and means for setting a predetermined period of time variable with said vehicle speed indicative signal and rendering the exhaust brake system inoperable temporarily for said predetermined period of time when a predetermined shift is in progress in the automatic transmission after said command has been generated.
Claim 6
Dependent Claim
134 words
In a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system: means for generating a command for the engine brake running state; means for detecting a vehicle speed of the motor vehicle and generating a vehicle speed indicative signal indicative of said vehicle speed detected; and means for setting a predetermined period of time variable with said vehicle speed indicative signal and rendering the exhaust brake system inoperable temporarily for said predetermined period of time when a predetermined shift is in progress in the automatic transmission after said command has been generated.
Claim 7
Independent Claim
101 words
A method of exhaust brake control in a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system, the method comprising the steps of: generating a command for the engine brake running state; and rendering the exhaust brake system inoperable temporarily for a predetermined period of time when a predetermined shift is in progress after said command has been generated.
Claim 8
Independent Claim
101 words
A method of exhaust brake control in a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system, the method comprising the steps of: generating a command for the engine brake running state; and rendering the exhaust brake system inoperable temporarily for a predetermined period of time when a predetermined shift is in progress after said command has been generated.
Claim 9
Dependent Claim
23 words
A method as claimed in claim 5, wherein said predetermined period of time is variable with a vehicle speed of the motor vehicle.
Claim 10
Independent Claim
122 words
A method of exhaust brake control in a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system, the method comprising the steps of: generating a command for the engine brake running state; determining whether or not there is a command for a predetermined shift in the automatic transmission; and rendering the exhaust brake system inoperable for a predetermined period of time when said predetermined shift is in progress after said command for the engine brake running state has been generated.
Claim 11
Independent Claim
122 words
A method of exhaust brake control in a motor vehicle having an engine and an automatic transmission, the automatic transmission having an input shaft and an output shaft and being shiftable to an engine brake running state wherein a direct motion connection is established between the input and output shafts, the motor vehicle also having an exhaust brake system, the method comprising the steps of: generating a command for the engine brake running state; determining whether or not there is a command for a predetermined shift in the automatic transmission; and rendering the exhaust brake system inoperable for a predetermined period of time when said predetermined shift is in progress after said command for the engine brake running state has been generated.
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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) | 1995-02-17 | 1995-08-19 | 1996-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-17 | 1999-08-19 | 2000-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-17 | 2003-08-19 | 2004-02-18 | $7700.00 | Window Closed / Lapsed |