Patent US4543933A successfully refreshed from Google Patents.
US4543933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for the actuation of the throttle valve of a motor vehicle internal combustion engine
Assignee: Dr Ing HCF Porsche AG
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Filing: 1983-03-11
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Granted: 1985-10-01
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Expires: 2003-03-11
Abstract
Abstract An active Wien-Robinson suppression filter connected as electrical filter in the electric transmission line from a drive-pedal potentiometer of a motor vehicle to the adjusting member of the throttle valve of the internal combustion engine; the jerking of the motor vehicle which otherwise occurs frequently, can be avoided with the use of such a filter.
Inventors
- 👤 Jochem Kessler
- 👤 Bernd Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:18
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; F02D11/106; B; B60; B60K; B60K26/00; B60K26/04; F02D17/00; F02D17/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
110 words
A circuit arrangement for the actuation of a throttle valve of a motor vehicle internal combustion engine having a drive pedal, whose rotary position is converted into a corresponding voltage of a potentiometer connected therewith, said voltage being transmitted by way of a control apparatus to an electrical adjusting member for the actuation of the throttle valve, characterized by further means for effectively eliminating jerking of the motor vehicle within a predetermined frequency range, wherein the further means is an active Wien-Robinson suppression filter whose resonant frequency is tuned to the oscillating frequencies to be suppressed of about 2 to 3 hertz connected between the potentiometer and the control apparatus.
Claim 2
Dependent Claim
110 words
A circuit arrangement for the actuation of a throttle valve of a motor vehicle internal combustion engine having a drive pedal, whose rotary position is converted into a corresponding voltage of a potentiometer connected therewith, said voltage being transmitted by way of a control apparatus to an electrical adjusting member for the actuation of the throttle valve, characterized by further means for effectively eliminating jerking of the motor vehicle within a predetermined frequency range, wherein the further means is an active Wien-Robinson suppression filter whose resonant frequency is tuned to the oscillating frequencies to be suppressed of about 2 to 3 hertz connected between the potentiometer and the control apparatus.
Claim 3
Dependent Claim
23 words
A circuit arrangement according to claim 1, characterized in that the oscillating frequency to which the filter is tuned is approximately 2.6 hertz.
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) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |