Anna G Stefanopoulou

US Patent:

6579206, Jun 17, 2003

Filed:

Jul 26, 2001

Appl. No.:

09/916236

Inventors:

Sharon Liu - Ann Arbor MI
Anna G. Stefanopoulou - Ann Arbor MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 4112

US Classification:

477 43

Abstract:

A method of controlling a vehicle is provided. The method includes controlling a continuously variable transmission and an engine with a supervisory controller and a powertrain controller; providing a driver input to the supervisory controller; controlling the supervisory controller to constrain the engine along a predetermined operating curve during a steady state condition of the driver input; and controlling the supervisory controller to relax the engine from the predetermined operating curve during a non-steady state condition of the driver input such that the powertrain controller coordinates an engine throttle and a rate of change of the continuously variable transmission ratio. Here, the predetermined operating curve is maintained by adjusting a continuously variable transmission ratio.

US Patent:

6681728, Jan 27, 2004

Filed:

Nov 5, 2001

Appl. No.:

09/682987

Inventors:

Mohammad Haghgooie - Ann Arbor MI
Anna Stefanopoulou - Ann Arbor MI
Katherine Peterson - Ann Arbor MI
Thomas William Megli - Dearborn MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F01L 904

US Classification:

123 9011, 2511291

Abstract:

A method for controlling movement of an armature for an electromagnetic valve actuator. The armature moves between pole faces of juxtaposed solenoid coils. Voltage applied to armature capturing coil is varied in a closed-loop fashion as the armature moves through a flux initialization phase, followed by an armature landing phase whereby a soft landing of the armature is achieved during valve opening movement and valve closing movement.

US Patent:

8185293, May 22, 2012

Filed:

Apr 2, 2009

Appl. No.:

12/417240

Inventors:

Li Jiang - Ann Arbor MI, US
Nestor H. Oliverio - Ann Arbor MI, US
Anna G. Stefanopoulou - Ann Arbor MI, US
Hakan Yilmaz - Ann Arbor MI, US

Assignee:

Robert Bosch LLC - Broadview IL

International Classification:

F02D 45/00
G01M 15/08
F02M 7/28

US Classification:

701102, 7311455

Abstract:

A method of operating an internal combustion engine. The method including monitoring a pressure in a combustion chamber of the engine during a compression stroke, determining whether a fuel composition has changed from a first composition to a second composition based at least in part on the monitored pressure, and triggering a fuel composition adaptation in response to a determination that the fuel composition has changed.

US Patent:

20120253634, Oct 4, 2012

Filed:

Mar 30, 2012

Appl. No.:

13/435535

Inventors:

Li Jiang - Ann Arbor MI, US
Donghoon Lee - Ann Arbor MI, US
Hakan Yilmaz - Ann Arbor MI, US
Anna Stefanopoulou - Ann Arbor MI, US

International Classification:

F02D 45/00

US Classification:

701102

Abstract:

Methods and systems for engine control optimization are provided. A first and a second operating condition of a vehicle engine are detected. An initial value is identified for a first and a second engine control parameter corresponding to a combination of the detected operating conditions according to a first and a second engine map look-up table. The initial values for the engine control parameters are adjusted based on a detected engine performance variable to cause the engine performance variable to approach a target value. A first and a second sensitivity of the engine performance variable are determined in response to changes in the engine control parameters. The first engine map look-up table is adjusted when the first sensitivity is greater than a threshold, and the second engine map look-up table is adjusted when the second sensitivity is greater than a threshold.

US Patent:

20120253635, Oct 4, 2012

Filed:

Mar 30, 2012

Appl. No.:

13/435551

Inventors:

Li Jiang - Ann Arbor MI, US
Donghoon Lee - Ann Arbor MI, US
Hakan Yilmaz - Ann Arbor MI, US
Anna Stefanopoulou - Ann Arbor MI, US

International Classification:

F02D 45/00

US Classification:

701102

Abstract:

Methods and systems for optimizing a performance of a vehicle engine are provided. The method includes determining an initial value for a first engine control parameter based on one or more detected operating conditions of the vehicle engine, determining a value of an engine performance variable, and artificially perturbing the determined value of the engine performance variable. The initial value for the first engine control parameter is then adjusted based on the perturbed engine performance variable causing the engine performance variable to approach a target engine performance variable. Operation of the vehicle engine is controlled based on the adjusted initial value for the first engine control parameter. These acts are repeated until the engine performance variable approaches the target engine performance variable.

US Patent:

20120253636, Oct 4, 2012

Filed:

Mar 30, 2012

Appl. No.:

13/435562

Inventors:

Li Jiang - Ann Arbor MI, US
Donghoon Lee - Ann Arbor MI, US
Hakan Yilmaz - Ann Arbor MI, US
Anna Stefanopoulou - Ann Arbor MI, US

International Classification:

F02D 28/00
F02D 13/02

US Classification:

701102, 123347

Abstract:

Methods and systems for real-time engine control optimization are provided. A value of an engine performance variable is determined, a value of a first operating condition and a value of a second operating condition of a vehicle engine are detected, and initial values for a first engine control parameter and a second engine control parameter are determined based on the detected first operating condition and the detected second operating condition. The initial values for the first engine control parameter and the second engine control parameter are adjusted based on the determined value of the engine performance variable to cause the engine performance variable to approach a target engine performance variable. In order to cause the engine performance variable to approach the target engine performance variable, adjusting the initial value for the first engine control parameter necessitates a corresponding adjustment of the initial value for the second engine control parameter.

US Patent:

20120253637, Oct 4, 2012

Filed:

Mar 30, 2012

Appl. No.:

13/435575

Inventors:

Li Jiang - Ann Arbor MI, US
Donghoon Lee - Ann Arbor MI, US
Hakan Yilmaz - Ann Arbor MI, US
Anna Stefanopoulou - Ann Arbor MI, US

International Classification:

F02D 13/02
F02D 28/00

US Classification:

701102

Abstract:

Methods and systems for engine control optimization are provided. One or more operating conditions of a vehicle engine are detected. A value for each of a plurality of engine control parameters is determined based on the detected one or more operating conditions of the vehicle engine. A range of the most commonly detected operating conditions of the vehicle engine is identified and a region of optimization is defined based on the range of the most commonly detected operating conditions of the vehicle engine. The engine control optimization routine is initiated when the one or more operating conditions of the vehicle engine are within the defined region of optimization.

US Patent:

20130073173, Mar 21, 2013

Filed:

Sep 17, 2012

Appl. No.:

13/621527

Inventors:

Robert Bosch Gmbh - Stuttgart, DE
Anna Stefanopoulou - Ann Arbor MI, US
Li Jiang - Ann Arbor MI, US
Jacob Larimore - Ann Arbor MI, US

Assignee:

ROBERT BOSCH GMBH - Stuttgart

International Classification:

G06F 19/00

US Classification:

701101

Abstract:

Methods and systems are provided for estimating engine performance information for a combustion cycle of an internal combustion engine. Estimated performance information for a previous combustion cycle is retrieved from memory. The estimated performance information includes an estimated value of at least one engine performance variable. Actuator settings applied to engine actuators are also received. The performance information for the current combustion cycle is then estimated based, at least in part, on the estimated performance information for the previous combustion cycle and the actuator settings applied during the previous combustion cycle. The estimated performance information for the current combustion cycle is then stored to the memory to be used in estimating performance information for a subsequent combustion cycle.