Patent US1722430A successfully refreshed from Google Patents.
Patent US5680763A successfully refreshed from Google Patents.
US5680763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for controlling a charging of an internal combustion engine
Assignee: Robert Bosch GmbH
•
Filing: 1995-10-30
•
Granted: 1997-10-28
•
Expires: 2015-10-30
Abstract
Abstract A system for controlling the charging of an internal combustion engine contains an integral controller. If appropriate, a proportional controller and/or a differential controller may also be present. The integration, carried out by the integral controller, of the control error is limited to a prescribable limit value in order to avoid severe overshoots. Various limit values for steady-state operating states and for dynamic operating states can be prescribed. The dynamic limit value can be provided with corrections as a function of characteristic operating variables and with an adaptive correction and can be additionally increased by a safety interval.
Inventors
- 👤 Stefan Unland
- 👤 Oskar Torno
- 👤 Werner Haeming
- 👤 Iwan Surjadi
- 👤 Robert Sloboda
- 👤 Michael Baeuerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:08
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02D; F02D41/00; F02D41/0002; F02D41/0007; F02B37/24; F02D41/02; F02D41/14; F02D41/1401; F02D2041/1409; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
124 words
A system for controlling a charging pressure of an internal combustion engine, comprising: means for determining a present value of the charging pressure and for determining a control deviation between a desired value of the charging pressure and the present value of the charging pressure; an integration controller device for integrating the control deviation, the integrated control deviation being limited by a preselected integration limit, the integration limit having a first value for steady-state operation of the engine and having a second value for dynamic operation of the engine; and an actuation controller device coupled to the integration device, the actuation controller device generating a charging control signal as a function of the integrated control deviation, the charging control signal controlling the charging pressure.
Claim 2
Independent Claim
124 words
A system for controlling a charging pressure of an internal combustion engine, comprising: means for determining a present value of the charging pressure and for determining a control deviation between a desired value of the charging pressure and the present value of the charging pressure; an integration controller device for integrating the control deviation, the integrated control deviation being limited by a preselected integration limit, the integration limit having a first value for steady-state operation of the engine and having a second value for dynamic operation of the engine; and an actuation controller device coupled to the integration device, the actuation controller device generating a charging control signal as a function of the integrated control deviation, the charging control signal controlling the charging pressure.
Claim 3
Dependent Claim
23 words
The system according to claim 1, wherein the second value is a function of at least one characteristic operating variable of the engine.
Claim 4
Dependent Claim
33 words
The system according to claim 2, wherein the at least one characteristic operating variable includes at least one of a rotational speed of the engine, a charging air temperature, and an atmospheric pressure.
Claim 5
Dependent Claim
20 words
The system according to claim 1, wherein the second value is a function of whether an overboost function is activated.
Claim 6
Dependent Claim
18 words
The system according to claim 1, wherein the second value is a function of an adaptive correction value.
Claim 7
Dependent Claim
21 words
The system according to claim 5, wherein the adaptive correction value is a function of at least one characteristic operating variable.
Claim 8
Dependent Claim
21 words
The system according to claim 5, wherein the adaptive correction value is a function of whether an adaptation condition is fulfilled.
Claim 9
Dependent Claim
19 words
The system according to claim 7, wherein the adaptive correction value is changed if the adaptation condition is fulfilled.
Claim 10
Dependent Claim
29 words
The system according to claim 8, wherein the adaptation condition is fulfilled if at least one characteristic operating variable fulfills at least one condition for a preselected time period.
Claim 11
Dependent Claim
18 words
The system according to claim 1, wherein the second value is a function of a safety interval value.
Claim 12
Dependent Claim
32 words
The system according to claim 1, wherein the integration limit has the second value if a dynamic condition is fulfilled and has the first value if the dynamic condition is not fulfilled.
Claim 13
Dependent Claim
26 words
The system according to claim 11, wherein the dynamic condition is fulfilled for a preselected time period when the control deviation exceeds a preselected threshold value.
References Cited (Backward Citations)
EP0084037A1
Cited
US5121604A
Cited
US5123246A
Cited
US5442918A
Cited
DE4344960A1
Cited
US5551235A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-10-27 | 2001-04-28 | 2001-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-10-27 | 2005-04-28 | 2005-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-10-27 | 2009-04-28 | 2009-10-28 | $7700.00 | Window Closed / Lapsed |