Patent US3852441A successfully refreshed from Google Patents.
US6665604B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control method for variable geometry turbocharger and related system
Assignee: JPMorgan Chase Bank NA
•
Filing: 2002-02-05
•
Granted: 2003-12-16
•
Expires: 2022-02-05
Abstract
Abstract Control method for variable geometry turbocharger and related system are disclosed, wherein a boost target for a turbocharger is determined. Next, an error value between target boost and actual boost pressure is calculated and utilized to determine a new vane position. For example, the new vane position can be determined by calculating a needed change in vane position from the equation, Delta<theta>=kp(err)+kd.d(err)/dt, where Delta<theta> is the change in vane position, kp is a proportional gain value, kd is a differential gain value, and err is the error value between the boost target and the actual boost. A new vane position for the turbocharger is then determined by summing Delta<theta> with the previous vane position, and the turbocharger's set of vanes is positioned according to the new vane position. An open loop diagnostic mechanism and a feed-forward mechanism can also be employed to enhance vane positioning.
Inventors
- 👤 Steven Don Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:16
CPC Classifications
F; F02; F02D; F02D23/00; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F02D41/00; F02D41/0002; F02D41/0007; F02B; F02B37/00; F02B37/12; F02B37/24; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A method for positioning a set of vanes of a variable geometry turbocharger, said method comprising steps of: determining a boost target for said turbocharger; calculating an error value between said boost target and an actual boost; determining a change in vane position, Δ θ , wherein said Δ θ is substantially equal to k p (err)+k d ·d(err)/dt; determining a new vane position for said turbocharger based on said change in vane position; positioning said set of vanes of said turbocharger according to said new vane position.
Claim 2
Independent Claim
88 words
A method for positioning a set of vanes of a variable geometry turbocharger, said method comprising steps of: determining a boost target for said turbocharger; calculating an error value between said boost target and an actual boost; determining a change in vane position, Δ θ , wherein said Δ θ is substantially equal to k p (err)+k d ·d(err)/dt; determining a new vane position for said turbocharger based on said change in vane position; positioning said set of vanes of said turbocharger according to said new vane position.
Claim 3
Dependent Claim
26 words
The method of claim 1 further comprising a step of correcting said boost target based on an ambient pressure so as to prevent overspeeding said turbocharger.
Claim 4
Dependent Claim
39 words
The method of claim 1 further comprising a step of measuring an engine parameter prior to said step of determining said boost target, wherein said boost target is determined from a boost target map based on said engine parameter.
Claim 5
Dependent Claim
39 words
The method of claim 1 further comprising a step of converting said new vane position into an analog signal after said step of determining said new vane position and prior to said step of positioning said set of vanes.
Claim 6
Dependent Claim
18 words
The method of claim 4 further comprising a step of utilizing said analog signal to position an actuator.
Claim 7
Independent Claim
61 words
A method for positioning a set of vanes of a variable geometry turbocharger, said method comprising steps of: determining a new vane position for said turbocharger; modifying said new vane position with a feed forward value, FF, wherein said FF is substantially equal to (|dTP/dt|−Y)*K a ; positioning said set of vanes of said turbocharger according to said new vane position.
Claim 8
Independent Claim
61 words
A method for positioning a set of vanes of a variable geometry turbocharger, said method comprising steps of: determining a new vane position for said turbocharger; modifying said new vane position with a feed forward value, FF, wherein said FF is substantially equal to (|dTP/dt|−Y)*K a ; positioning said set of vanes of said turbocharger according to said new vane position.
Claim 9
Independent Claim
106 words
A system for positioning a set of vanes of a variable geometry turbocharger, said system comprising: a boost target map for determining a boost target for said turbocharger; an ECU configured to calculate an error value between said boost target and an actual boost and to determine a new vane position for said turbocharger based on a change in vane position a PID module configured to determine said change in vane position, Δ θ , wherein said Δ θ is substantially equal to k p (err)+k d ·d(err)/dt; an actuator configured to position said set of vanes of said turbocharger according to said new vane position.
Claim 10
Independent Claim
106 words
A system for positioning a set of vanes of a variable geometry turbocharger, said system comprising: a boost target map for determining a boost target for said turbocharger; an ECU configured to calculate an error value between said boost target and an actual boost and to determine a new vane position for said turbocharger based on a change in vane position a PID module configured to determine said change in vane position, Δ θ , wherein said Δ θ is substantially equal to k p (err)+k d ·d(err)/dt; an actuator configured to position said set of vanes of said turbocharger according to said new vane position.
Claim 11
Dependent Claim
30 words
The system of claim 7 further comprising a boost target correcting module configured to correct said boost target based on an ambient pressure so as to prevent overspeeding said turbocharger.
Claim 12
Dependent Claim
35 words
The system of claim 7 further comprising: a boost target map; a sensor configured to measure an engine parameter, wherein said boost target is determined from said boost target map based on said engine parameter.
Claim 13
Dependent Claim
21 words
The system of claim 7 further comprising a D/A converter configured to convert said new vane position into an analog signal.
Claim 14
Dependent Claim
15 words
The system of claim 10 wherein said analog signal is utilized to position said actuator.
Claim 15
Independent Claim
69 words
A system for positioning a set of vanes of a variable geometry turbocharger, said system comprising: an ECU configured to determine a new vane position for said turbocharger; a feed forward module configured to modify said new vane position with a feed forward value, FF, wherein said FF is substantially equal to (|dTP/dt|−Y)*K a ; positioning said set of vanes of said turbocharger according to said new vane position.
Claim 16
Independent Claim
69 words
A system for positioning a set of vanes of a variable geometry turbocharger, said system comprising: an ECU configured to determine a new vane position for said turbocharger; a feed forward module configured to modify said new vane position with a feed forward value, FF, wherein said FF is substantially equal to (|dTP/dt|−Y)*K a ; positioning said set of vanes of said turbocharger according to said new vane position.
References Cited (Backward Citations)
US4671068A
Cited
US4776168A
Cited
US6134888A
Cited
US6161384A
Cited
US6256993B1
Cited
EP0786589A1
Cited
US6067798A
Cited
US6058707A
Cited
US6233934B1
Cited
US6134890A
Cited
US6089018A
Cited
US6161383A
Cited
US6067799A
Cited
US6338250B1
Cited
US6272859B1
Cited
US6269642B1
Cited
US6397597B1
Cited
US6067800A
Cited
US6314736B1
Cited
WO2001055575A1
Cited
WO2001059275A2
Cited
WO2001075292A1
Cited
US6523345B2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-12-15 | 2007-06-16 | 2007-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-12-15 | 2011-06-16 | 2011-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-12-15 | 2015-06-16 | 2015-12-16 | $7700.00 | Window Closed / Lapsed |