US4841931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adjusting a controlling element and circuit arrangement for the carrying out of the method
Assignee: Mannesmann VDO AG
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Filing: 1988-04-25
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Granted: 1989-06-27
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Expires: 2008-04-25
Abstract
Abstract In the method for adjusting a controlling element, a marking point which can be recognized by the controller unit which controls the controlling element and is at a given distance from the adjustment point is selected in the vicinity of the desired adjustment point, said distance corresponding to a given number of control pulses which are necessary in order to adjust the controlling element with close tolerances to the desired adjustment point. When a switch is used as the marking point, the distance should be so great that after movement beyond this marking point the switch passes into a precisely defined switch condition.
Inventors
- 👤 Heinz-Friedrich Ohm
- 👤 Klaus Bluhm
- 👤 Hans-Gunter Appel
- 👤 Kurt Probst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:11
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/24; F02D41/26; F02D41/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
177 words
A method for providing adjustment to a given adjustment point of a controlling element which serves to actuate a displacement device in order to control the engine output of an internal combustion engine, a controlling of the controlling element being effected by an electronic automatic controller unit which acts upon the controlling element by a train of control pulses, the method comprising steps of selecting a marking point for the controller unit at a specified distance from a desired adjustment point for at least one entire control pulse, the marking point serving for moving a correcting element to displace the controlling element from a marking point up to an adjustment point; moving back the controlling element, after a first passage of the controlling element beyond the marking point and stopping, with constant control pulses past the marking point; and passing over the marking point in a direction towards the adjustment point, the controlling element being acted on, from the marking point, with as many defined control pulses as corresponds to a selected distance from the adjustment point.
Claim 2
Independent Claim
177 words
A method for providing adjustment to a given adjustment point of a controlling element which serves to actuate a displacement device in order to control the engine output of an internal combustion engine, a controlling of the controlling element being effected by an electronic automatic controller unit which acts upon the controlling element by a train of control pulses, the method comprising steps of selecting a marking point for the controller unit at a specified distance from a desired adjustment point for at least one entire control pulse, the marking point serving for moving a correcting element to displace the controlling element from a marking point up to an adjustment point; moving back the controlling element, after a first passage of the controlling element beyond the marking point and stopping, with constant control pulses past the marking point; and passing over the marking point in a direction towards the adjustment point, the controlling element being acted on, from the marking point, with as many defined control pulses as corresponds to a selected distance from the adjustment point.
Claim 3
Dependent Claim
57 words
A method according to claim 1, wherein the marking point is defined by a switch and the distance of the marking point from the adjustment point is selected so large that the switch, after a passage over the marking point in a direction towards the adjustment point, upon reaching the latter assumes an unambiguously defined switch condition.
References Cited (Backward Citations)
US4730264A
Cited
US4736722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |