US4534331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for a fuel metering system of an internal combustion engine
Assignee: Robert Bosch GmbH
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Filing: 1984-07-06
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Granted: 1985-08-13
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Expires: 2004-07-06
Abstract
Abstract A control device having certain criteria which must be fulfilled in order to trigger an acceleration enrichment. Criteria are a defined number of successive load values of increasing tendency and/or an actual load value with a defined distance above the arithmetic mean of a number of preceding load values. For the acceleration enrichment itself operational parameters, such as rpm, load, load gradient, temperature and number of revolutions since the triggering of the acceleration are processed.
Inventors
- 👤 David van Belzen
- 👤 Gunter Honig
- 👤 Gerhard Lotterbach
- 👤 Jan-Faas van Woudenberg
- 👤 Udo Zucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:21
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/045; F02D41/18
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
78 words
A control device for a fuel metering system of an internal combustion engine comrising means for sequentially determining load values, n, made successively in time, and a computer for the generation of fuel metering signals dependent on operational parameters, further including means for interrogating at least four successive load values occuring in sequence as to their tendency wherein a sequential rising tendency of said at least four successive load values corresponding to an acceleration triggers an acceleration enrichment.
Claim 2
Dependent Claim
78 words
A control device for a fuel metering system of an internal combustion engine comrising means for sequentially determining load values, n, made successively in time, and a computer for the generation of fuel metering signals dependent on operational parameters, further including means for interrogating at least four successive load values occuring in sequence as to their tendency wherein a sequential rising tendency of said at least four successive load values corresponding to an acceleration triggers an acceleration enrichment.
Claim 3
Dependent Claim
18 words
A control device in accordance with claim 1, characterized in that pressure values are used as load values.
Claim 4
Dependent Claim
21 words
A control device in accordance with claim 1, characterized in that rate of air flow values are used as load values.
Claim 5
Dependent Claim
24 words
A control device in accordance with claim 1, characterized in that ##EQU3## serves as triggers criterion for the acceleration enrichment, where P is pressure.
Claim 6
Dependent Claim
24 words
A control device in accordance with claim 2, characterized in that ##EQU4## serves as trigger criterion for the acceleration enrichment, where P is pressure.
Claim 7
Dependent Claim
24 words
A control device in accordance with claim 3, characterized in that ##EQU5## serves as trigger criterion for the acceleration enrichment, where P is pressure.
Claim 8
Dependent Claim
41 words
A control device in accordance with claim 1, wherein for the formation of the enrichment factor for the acceleration a combination of the values rpm, load, load gradient, temperature and number of revolutions since the triggering of the acceleration is processed.
Claim 9
Dependent Claim
26 words
A control device in accordance with claim 1, wherein for the acceleration enrichment a factor of the following formula is formed; ##EQU6## where P is pressure.
Claim 10
Dependent Claim
28 words
A control device in accordance with claim 1, characterized in that a clocked determination of load factors is done synchronous with determnation of an angle of the crankshaft.
Claim 11
Dependent Claim
28 words
A control device in accordance with claim 9, characterized in that a clocked determination of load factors is done synchronous with the angle according to defined time intervals.
Claim 12
Dependent Claim
43 words
A control device in accordance with claim 9, characterized in that for the formation of the enrichment factor for the acceleration a combination of the values rpm, load, load gradient, temperature and number of revolutions since the triggering of the acceleration is processed.
Claim 13
Dependent Claim
43 words
A control device in accordance with claim 10, characterized in that for the formation of the enrichment factor for the acceleration a combination of the values rpm, load, load gradient, temperature and number of revolutions since the triggering of the acceleration is processed.
Claim 14
Dependent Claim
43 words
A control device in accordance with claim 11, characterized in that for the formation of the enrichment factor for the acceleration a combination of the values rpm, load, load gradient, temperature and number of revolutions since the triggering of the acceleration is processed.
Claim 15
Dependent Claim
29 words
A control device in accordance with claim 5, characterized in that a clocked determination of load factors is done synchronous with the determination of an angle of the crankshaft.
Claim 16
Dependent Claim
29 words
A control device in accordance with claim 6, characterized in that a clocked determination of load factors is done synchronous with the determination of an angle of the crankshaft.
Claim 17
Dependent Claim
30 words
A control device in accordance with claim 5, characterized in that a clocked determination of load factors is done synchronous with the angle is done according to defined time intervals.
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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |