US4868756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of indicating a shift operation of a manual transmission gear of a vehicle
Assignee: Honda Motor Co Ltd
•
Filing: 1987-02-09
•
Granted: 1989-09-19
•
Expires: 2007-02-09
Abstract
Abstract A method for indicating a shift operation for a manual transmission gear includes a step for comparing a detected vehicle speed with a reference speed which is determined and changed on the basis of a detected engine temperature and a step for indicating the shift operation on this basis of a result of the comparison. When a temperature parameter relating to the engine operation is lower than a predetermined reference temperature value, the reference vehicle speed is raised so that the indication of the shift operation will not be generated.
Inventors
- 👤 Tomohiko Kawanabe
- 👤 Masahiko Asakura
- 👤 Katsuhiko Kimura
- 👤 Yasunari Seki
- 👤 Kouji Matsuura
- 👤 Hiroshi Hasebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:40
CPC Classifications
B; B60; B60R; B60R16/00; B60R16/02; B60R16/023; B60R16/0231; B60R16/0236; F; F16; F16H; F16H63/00; F16H63/40; F16H63/42; F16H59/00; F16H59/74; F16H59/78; F16H61/00; F16H61/02; F16H61/0202; F16H61/0204; F16H61/0213; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/84
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
A method for indicating a shift operation for a manual transmission gear in a vehicle having an engine, comprising the steps of: (a) detecting a vehicle speed and a temperature of the engine mounted on the vehicle; (b) determining a reference vehicle speed, said reference vehicle speed being set at a first value which is higher than a second value, said second value corresponding to a condition where the detected temperature of the engine is higher than a first reference engine temperature, said first value being set when the detected temperature of the engine is lower than said first reference engine temperature; (c) indicating the shift operation in response to a comparison between the detected vehicle speed and said reference vehicle speed; (d) comparing a detected engine temperature with a second reference engine temperature, said second reference engine temperature being lower than said first reference engine temperature; and (e) raising said reference vehicle speed when the detected engine temperature is lower than said second reference engine temperature.
Claim 2
Independent Claim
167 words
A method for indicating a shift operation for a manual transmission gear in a vehicle having an engine, comprising the steps of: (a) detecting a vehicle speed and a temperature of the engine mounted on the vehicle; (b) determining a reference vehicle speed, said reference vehicle speed being set at a first value which is higher than a second value, said second value corresponding to a condition where the detected temperature of the engine is higher than a first reference engine temperature, said first value being set when the detected temperature of the engine is lower than said first reference engine temperature; (c) indicating the shift operation in response to a comparison between the detected vehicle speed and said reference vehicle speed; (d) comparing a detected engine temperature with a second reference engine temperature, said second reference engine temperature being lower than said first reference engine temperature; and (e) raising said reference vehicle speed when the detected engine temperature is lower than said second reference engine temperature.
Claim 3
Independent Claim
188 words
A method for indicating a shift operation for a manual transmission gear in a vehicle having an engine, comprising the steps of: (a) detecting a vehicle speed and a temperature of the engine mounted on the vehicle; (b) determining a reference vehicle speed 1 said reference vehicle speed being set at a first value which is higher than a second value, said second value corresponding to a condition where the detected temperature of the engine is higher than a first reference engine temperature, said first value being set when the detected temperature of the engine is lower than said first reference engine temperature; (c) indicating the shift operation in response to a comparison between the detected vehicle speed and said reference vehicle speed; (d) detecting an intake air temperature of the engine; (e) comparing the detected intake air temperature of the engine with a reference intake air temperature, said reference intake air temperature being set a value lower than the first reference engine temperature; and (f) raising the reference vehicle speed when the detected intake air temperature of the engine is lower than said reference intake air temperature.
Claim 4
Independent Claim
188 words
A method for indicating a shift operation for a manual transmission gear in a vehicle having an engine, comprising the steps of: (a) detecting a vehicle speed and a temperature of the engine mounted on the vehicle; (b) determining a reference vehicle speed 1 said reference vehicle speed being set at a first value which is higher than a second value, said second value corresponding to a condition where the detected temperature of the engine is higher than a first reference engine temperature, said first value being set when the detected temperature of the engine is lower than said first reference engine temperature; (c) indicating the shift operation in response to a comparison between the detected vehicle speed and said reference vehicle speed; (d) detecting an intake air temperature of the engine; (e) comparing the detected intake air temperature of the engine with a reference intake air temperature, said reference intake air temperature being set a value lower than the first reference engine temperature; and (f) raising the reference vehicle speed when the detected intake air temperature of the engine is lower than said reference intake air temperature.
References Cited (Backward Citations)
US4449618A
Cited
US4762026A
Cited
US4555691A
Cited
US4439158A
Cited
US4531432A
Cited
US4622637A
Cited
US4550596A
Cited
US4643049A
Cited
US4723215A
Cited
US4752883A
Cited
US4688530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |