US4563989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulation system for an internal combustion engine
Assignee: Robert Bosch GmbH
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Filing: 1985-03-19
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Granted: 1986-01-14
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Expires: 2005-03-19
Abstract
Abstract An idling regulation system for an internal combustion engine is proposed, in which preferably the air throughput in the intake tube is regulated in accordance with the deviation between the set-point and actual rpm values, the temperature, and the like. In this manner, the air leakage of the throttle valve, for instance, is additionally detected in an idling regulation system, via a bypass final control element.
Inventors
- 👤 Cornelius Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:54
CPC Classifications
F; F02; F02D; F02D31/00; F02D31/001; F02D31/002; F02D31/003; F02D31/005
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
202 words
A regulation system for an internal combustion engine having an air intake tube comprising, means for generating actual values of air-flow in said intake tube, means for generating actual and reference values of rpm, means for comparing the actual and reference values of rpm, means for generating reference values of air-flow in said intake tube in response to said comparison means of the actual and reference values of rpm, means for comparing the actual and reference values of air-flow in said intake tube, means for controlling the air-flow in said air intake tube, and means for regulating said means for controlling air-flow in said air intake tube in response to said comparison means for the actual and reference values of air-flow in said intake tube, whereby said means for generating actual values of air-flow, said means for comparing actual and reference values of air-flow, said means for controlling air-flow, and said means for regulating said means for controlling air-flow comprise an inner control loop, and said internal combustion engine, said means for generating actual value of rpm, said means for comparing the actual and reference value of rpm, and said means for generating reference values of air-flow comprise an outer control loop.
Claim 2
Dependent Claim
202 words
A regulation system for an internal combustion engine having an air intake tube comprising, means for generating actual values of air-flow in said intake tube, means for generating actual and reference values of rpm, means for comparing the actual and reference values of rpm, means for generating reference values of air-flow in said intake tube in response to said comparison means of the actual and reference values of rpm, means for comparing the actual and reference values of air-flow in said intake tube, means for controlling the air-flow in said air intake tube, and means for regulating said means for controlling air-flow in said air intake tube in response to said comparison means for the actual and reference values of air-flow in said intake tube, whereby said means for generating actual values of air-flow, said means for comparing actual and reference values of air-flow, said means for controlling air-flow, and said means for regulating said means for controlling air-flow comprise an inner control loop, and said internal combustion engine, said means for generating actual value of rpm, said means for comparing the actual and reference value of rpm, and said means for generating reference values of air-flow comprise an outer control loop.
Claim 3
Dependent Claim
26 words
A regulation system as defined by claim 1, wherein said means for generating actual values of air-flow comprises an air-mass meter in said air intake tube.
Claim 4
Dependent Claim
26 words
A regulation system as defined by claim 1, wherein said means for generating actual values of air-flow comprises an air quantity meter in said intake tube.
Claim 5
Dependent Claim
26 words
A regulation system as defined by claim 1, wherein said means for generating actual values of air-flow comprises an air-flow rate meter in said intake tube.
Claim 6
Dependent Claim
26 words
A regulation system as defined by claim 1, wherein said means for generating actual values of air-flow comprises an air-pressure meter in said air intake tube.
Claim 7
Dependent Claim
38 words
A regulation system as defined by claim 1, wherein said engine includes an air conditioning means and said regulating means includes means for generating reference values of the air-flow in accordance with a signal from said air conditioner.
Claim 8
Dependent Claim
43 words
A regulation system as defined by claim 1, wherein said engine includes an automatic transmission means, said regulating means includes means for generating reference values of the air-flow in accordance with a signal pertaining to the DRIVE setting in said automatic transmission means.
Claim 9
Dependent Claim
30 words
A regulation system as defined by claim 1, wherein said regulating means includes means for generating a reference value of the air-flow in accordance with an intake tube pressue value.
Claim 10
Dependent Claim
38 words
An idling regulation system as defined by claim 1, wherein said regulating means comprises a regulator device having at least one of the following: a proportioned, proportional integrating, proportional differentiating, and proportional integrating and differentiating mode of operation.
Claim 11
Independent Claim
148 words
A method for regulating a system for an internal combustion engine having an air intake tube, comprising the steps of (1) generating actual values of air-flow in said intake tube, (2) generating actual and reference values of rpm, (3) comparing the actual and reference values of rpm, (4) generating reference values of air-flow in said intake tube in response to said comparison step of the actual and reference values of rpm, (5) comparing the actual and reference values of air-flow in said intake tube, (6) controlling the air-flow in said air intake tube, and (7) regulating said controlling step for the air-flow in said air intake tube in response to said comparison step for the actual and reference values of air-flow in said intake tube, whereby steps (1), (5), (6) and (7) comprise an inner control loop, and steps (2), (3) and (4) comprise an outer control loop.
Claim 12
Independent Claim
148 words
A method for regulating a system for an internal combustion engine having an air intake tube, comprising the steps of (1) generating actual values of air-flow in said intake tube, (2) generating actual and reference values of rpm, (3) comparing the actual and reference values of rpm, (4) generating reference values of air-flow in said intake tube in response to said comparison step of the actual and reference values of rpm, (5) comparing the actual and reference values of air-flow in said intake tube, (6) controlling the air-flow in said air intake tube, and (7) regulating said controlling step for the air-flow in said air intake tube in response to said comparison step for the actual and reference values of air-flow in said intake tube, whereby steps (1), (5), (6) and (7) comprise an inner control loop, and steps (2), (3) and (4) comprise an outer control loop.
Claim 13
Dependent Claim
26 words
A method according to claim 10, comprising the further step of generating a reference value of the air-flow in accordance with an intake tube pressure vlaue.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |