Patent US4838227A successfully refreshed from Google Patents.
US4838227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preventing vibration noise in change-speed gearboxes, in particular of motor vehicles
Assignee: Ford Global Technologies LLC
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Filing: 1987-12-15
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Granted: 1989-06-13
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Expires: 2007-12-15
Abstract
Abstract In a method of preventing vibration noise in change-speed gearboxes, in particular of motor vehicles, with an electronic control of the ignition and the fuel measuring control of the internal combustion engine which is variable timewise as a function of events, the internal combustion engine is controlled as a function of the occurrence of gearbox vibration noise in order to change the combustion process of the said internal combustion engine so that no irregularities occur in the rotational vibration behavior.
Inventors
- 👤 Gerhard Abromeit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:40
CPC Classifications
B; B60; B60W; B60W30/00; B60W30/18; B60W10/00; B60W10/04; B60W10/10; B60W10/11; B60W30/1819; F; F02; F02D; F02D41/00; F02D41/02; F02D41/14; F02D41/1497; F02D41/1498; F02D2200/00; F02D2200/02; F02D2200/10; F02D2200/1015; F16; F16H; F16H57/00; F16H57/0006
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
78 words
A method of preventing vibration noise in change-speed gearboxes, in particular of motor vehicles, with an electronic control of the ignition and the fuel measuring control of the internal combustion engine which is variable timewise as a function of events, characterized by: controlling the internal combustion engine as a function of the occurrence of gearbox vibration noise; and changing the combustion process of the said internal combustion engine so that no irregularities occur in the rotational vibration behaviour.
Claim 2
Independent Claim
78 words
A method of preventing vibration noise in change-speed gearboxes, in particular of motor vehicles, with an electronic control of the ignition and the fuel measuring control of the internal combustion engine which is variable timewise as a function of events, characterized by: controlling the internal combustion engine as a function of the occurrence of gearbox vibration noise; and changing the combustion process of the said internal combustion engine so that no irregularities occur in the rotational vibration behaviour.
Claim 3
Dependent Claim
64 words
A method according to claim 1, characterized by: providing a gear selector and a gearbox vibration noise sensor on the change-speed gearbox, and passing their control signals on to a dynamic anti-gearbox-vibration-noise control means inside the electronic control, which carries out the step of changing over from a performance-characteristic control for normal running to a performance-characteristic control for the occurrence of gearbox vibration noises.
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) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |