US6161384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbocharger control management system throttle reserve control
Assignee: Dresser LLC
•
Filing: 1999-02-02
•
Granted: 2000-12-19
•
Expires: 2019-02-02
Abstract
Abstract A controlled power system and method for an internal combustion engine having a turbocharger controls the engine to vary differential pressure across the throttle, delta P, throttle reserve, according to a predetermined throttle reserve profile relative to at least one engine parameter.
Inventors
- 👤 Edward O. Reinbold
- 👤 James R. Zurlo
- 👤 James A. Davis
- 👤 Dennis W. Moss
- 👤 Mark J. Carls
- 👤 William D. Briggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:14
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/14; F02D41/1438; F02D41/1444; F02D41/1448; F02B; F02B37/00; F02B37/12; F02B37/16; F02B37/18; F02D41/0002; F02D41/0007; F02D41/1401; F02D2041/1409; F02D2200/00; F02D2200/02; F02D2200/04; F02D2200/0406; F02D2200/0414; F02D2200/70; F02D2200/703; F02D41/18; F02D41/187; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
82 words
A controlled power system comprising an internal combustion engine having a throttle with a differential pressure, delta P, thereacross, said delta P also known as throttle reserve, a turbocharger connected to said engine and having a turbine and a compressor, an electronic controller controlling said engine to control throttle reserve, a delta P sensor sensing said differential pressure across said throttle, and wherein said electronic controller controls said engine in response to at least one engine parameter, to provide desired throttle reserve.
Claim 2
Dependent Claim
82 words
A controlled power system comprising an internal combustion engine having a throttle with a differential pressure, delta P, thereacross, said delta P also known as throttle reserve, a turbocharger connected to said engine and having a turbine and a compressor, an electronic controller controlling said engine to control throttle reserve, a delta P sensor sensing said differential pressure across said throttle, and wherein said electronic controller controls said engine in response to at least one engine parameter, to provide desired throttle reserve.
Claim 3
Dependent Claim
16 words
The invention according to claim 1 wherein said at least one engine parameter comprises engine speed.
Claim 4
Dependent Claim
16 words
The invention according to claim 1 wherein said at least one engine parameter comprises engine load.
Claim 5
Dependent Claim
26 words
For the invention according to claim 3 wherein said engine has an intake manifold, and wherein said engine load is sensed by sensing intake manifold pressure.
Claim 6
Dependent Claim
17 words
The invention according to claim 1 comprising two said engine parameters, namely engine speed and engine load.
Claim 7
Dependent Claim
59 words
The invention according to claim 1 comprising a wastegate connected to said turbine, and wherein said electronic controller controls said wastegate to provide desired throttle reserve, and wherein said at least one engine parameter comprises engine speed, and wherein said electronic controller controls said engine by controlling said wastegate in response to engine speed, to provide desired throttle reserve.
Claim 8
Dependent Claim
59 words
The invention according to claim 1 comprising a wastegate connected to said turbine, and wherein said electronic controller controls said wastegate to provide desired throttle reserve, and wherein said at least one engine parameter comprises engine load, and wherein said electronic controller controls said engine by controlling said wastegate in response to engine load, to provide desired throttle reserve.
Claim 9
Dependent Claim
66 words
The invention according to claim 1 comprising a wastegate connected to said turbine and wherein said electronic controller controls said wastegate to provide desired throttle reserve, and comprising two said engine parameters, namely engine speed and engine load, and wherein said electronic controller controls said engine by controlling said wastegate in response to both said engine speed and said engine load, to provide desired throttle reserve.
Claim 10
Dependent Claim
28 words
The invention according to claim 1 wherein said delta P sensor comprises a pair of pressure transducers, one upstream of said throttle and one downstream of said throttle.
Claim 11
Dependent Claim
111 words
A controlled power system comprising: a turbocharger connected to said engine and having a turbine and a compressor; a wastegate connected to said turbine; an engine speed sensor sensing engine speed sensor sensing engine speed and providing an engine speed signal; an engine load sensor sensing engine load and providing an engine load signal; a delta P sensor sensing differential pressure across said throttle and providing a delta P signal, said delta P also known as throttle reserve; an electronic controller controlling said wastegate in response to said engine speed signal and in response to said engine load signal to provide desired throttle reserve as sensed by said delta P sensor.
Claim 12
Dependent Claim
111 words
A controlled power system comprising: a turbocharger connected to said engine and having a turbine and a compressor; a wastegate connected to said turbine; an engine speed sensor sensing engine speed sensor sensing engine speed and providing an engine speed signal; an engine load sensor sensing engine load and providing an engine load signal; a delta P sensor sensing differential pressure across said throttle and providing a delta P signal, said delta P also known as throttle reserve; an electronic controller controlling said wastegate in response to said engine speed signal and in response to said engine load signal to provide desired throttle reserve as sensed by said delta P sensor.
Claim 13
Independent Claim
56 words
A method for controlling an internal combustion engine having a throttle, and a turbocharger with a turbine and a compressor, comprising sensing differential pressure across said throttle, delta P, also known as throttle reserve, and controlling said engine to vary throttle reserve according to a predetermined throttle reserve profile relative to at least one engine parameter.
Claim 14
Independent Claim
56 words
A method for controlling an internal combustion engine having a throttle, and a turbocharger with a turbine and a compressor, comprising sensing differential pressure across said throttle, delta P, also known as throttle reserve, and controlling said engine to vary throttle reserve according to a predetermined throttle reserve profile relative to at least one engine parameter.
Claim 15
Dependent Claim
14 words
The invention according to claim 11 comprising varying throttle reserve according to engine speed.
Claim 16
Dependent Claim
14 words
The invention according to claim 11 comprising varying throttle reserve according to engine load.
Claim 17
Dependent Claim
17 words
The invention according to claim 11 comprising varying throttle reserve according to engine speed and engine load.
Claim 18
Dependent Claim
25 words
The invention according to claim 11 wherein said engine has a wastegate connected to said turbine, and comprising varying throttle reserve by controlling said wastegate.
Claim 19
Dependent Claim
15 words
The invention according to claim 15 comprising controlling said wastegate in response to engine speed.
Claim 20
Dependent Claim
15 words
The invention according to claim 15 comprising controlling said wastegate in response to engine load.
Claim 21
Dependent Claim
19 words
The invention according to claim 15 comprising controlling said wastegate in response to both engine speed and engine load.
Claim 22
Dependent Claim
116 words
The invention according to claim 11 comprising providing a first throttle reserve profile in a plot of throttle reserve versus engine load for a first engine speed range having a first throttle reserve value at a first engine load value, a second throttle reserve value at a second engine load value, and a third throttle reserve value at a third engine load value, wherein said first throttle reserve value is greater than said second throttle reserve value, said second throttle reserve value is greater than said third throttle reserve value, said first engine load value is less than said second engine load value, said second engine load value is less than said third engine load value.
Claim 23
Dependent Claim
48 words
The invention according to claim 19 wherein said engine has a wastegate connected to said turbine, said wastegate having a closed condition providing maximum boost by said turbocharger, and an open condition providing minimum boost by said turbocharger, and comprising varying said throttle reserve by controlling said wastegate.
Claim 24
Dependent Claim
35 words
The invention according to claim 20 comprising setting said first throttle reserve value at an unobtainably high value such that said wastegate is continually driven towards said closed condition at said first engine load value.
Claim 25
Dependent Claim
42 words
The invention according to claim 20 comprising setting said third throttle reserve value at a low enough value to eventually cause said engine to stall, such that said wastegate is continually driven towards said open condition at said third engine load value.
Claim 26
Dependent Claim
42 words
The invention according to claim 14 comprising providing a second throttle reserve profile in said plot for a second engine speed range and having a fourth throttle reserve value, said second engine speed range being higher than said first engine speed range.
Claim 27
Dependent Claim
26 words
The invention according to claim 23 comprising setting said fourth throttle reserve value less than said first throttle reserve value at said first engine load value.
Claim 28
Dependent Claim
26 words
The invention according to claim 23 comprising setting said fourth throttle reserve value less than said second throttle reserve vie at said second engine load value.
Claim 29
Dependent Claim
26 words
The invention according to claim 23 comprising setting said fourth throttle reserve value greater than said third throttle reserve value at said third engine load value.
Claim 30
Dependent Claim
30 words
The invention according to claim 23 comprising setting said fourth throttle reserve value less than said first and second throttle reserve values, and greater than said third throttle reserve value.
Claim 31
Dependent Claim
28 words
The invention according to claim 27 comprising setting said fourth throttle reserve value to be the same at each of said first, second and third engine load values.
Claim 32
Dependent Claim
114 words
The invention according to claim 19 comprising setting said throttle reserve at said second throttle reserve value at at least one point along an operational range of engine load values having a high end and a low end, said second engine load value being within said operational range, setting said throttle reserve at said first throttle reserve value along a low load range of engine load values extending toward lower engine load values from said low end of said operational range, setting said throttle reserve at said third throttle reserve value along a high load range of engine load values extending toward higher engine load values from said high end of said operational range.
Claim 33
Dependent Claim
26 words
The invention according to claim 29 wherein said operational range along said plot is substantially longer than each of said low load and high load ranges.
Claim 34
Dependent Claim
30 words
The invention according to claim 29 wherein the slope of said profile of said plot along said low load range is substantially steeper than the slope along said operational range.
Claim 35
Dependent Claim
30 words
The invention according to claim 29 wherein the slope of said profile of said plot along said high load range is substantially steeper than the slope along said operational range.
Claim 36
Dependent Claim
34 words
The invention according to claim 29 wherein the slope of said profile of said plot along each of said low and high load ranges is substantially steeper than the slope along said operational range.
Claim 37
Dependent Claim
83 words
The invention according to claim 11 comprising setting a desired delta P at a future time t 1 by adding an error term to desired delta P at a present time t 0 , said error term being a function of the difference between delta P and desired delta P, and comprising varying said error term nonlinearly with throttle reserve error, to rapidly bring delta P within a given window, and then more slowly change delta P once it its within such window.
Claim 38
Dependent Claim
17 words
The invention according to claim 34 comprising nonlinearly varying said error term according to a look-up table.
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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) | 2003-12-19 | 2004-06-19 | 2004-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-19 | 2008-06-19 | 2008-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-19 | 2012-06-19 | 2012-12-19 | $7700.00 | Window Closed / Lapsed |