Jason L Meyer

US Patent:

7472013, Dec 30, 2008

Filed:

Dec 27, 2007

Appl. No.:

11/965130

Inventors:

Layne K. Wiggins - Plymouth MI, US
Kenneth P. Dudek - Rochester Hills MI, US
Jason Meyer - Dayton OH, US
Yann G. Guezennec - Upper Arlington OH, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

G06F 19/00

US Classification:

701102, 701110, 123 9015, 123 9017

Abstract:

An engine control module comprises a table that outputs a parked VE estimate based on an input parameter when intake and exhaust cam phasers of an engine are in a parked position. A calculation module calculates VE estimate when the intake and exhaust cam phasers are not in a parked position based on the parked VE estimate and a mathematical relationship.

US Patent:

7689345, Mar 30, 2010

Filed:

Dec 27, 2007

Appl. No.:

11/965057

Inventors:

Layne K. Wiggins - Plymouth MI, US
Jason Meyer - Dayton OH, US
Yann G. Guezennec - Upper Arlington OH, US

International Classification:

G06F 19/00
F02M 25/07
F02B 75/12
G06F 17/10

US Classification:

701103, 701110, 702182

Abstract:

An engine control system comprises a first factor calculating module that calculates a first factor based on intake cam position (ICAM), exhaust cam position (ECAM), engine speed (RPM) and first calibration factors. A second factor calculating module calculates a second factor based on ICAM, ECAM, RPM and second calibration factors. A residual gas fraction (RGF) estimating module estimates a RGF value based on the first factor adjusted for altitude and said second factor. A method comprises calculating a first factor based on intake cam position (ICAM), exhaust cam position (ECAM), engine speed (RPM) and first calibration factors; calculating a second factor based on ICAM, ECAM, RPM and second calibration factors; and estimating a residual gas fraction (RGF) value based on the first factor adjusted for altitude and said second factor. At least one engine operating parameter is adjusted based on the RGF value.

US Patent:

8113187, Feb 14, 2012

Filed:

Sep 30, 2009

Appl. No.:

12/570251

Inventors:

Jason Meyer - Dayton OH, US
Shawn W. Midlam-Mohler - Columbus OH, US
Kenneth P. Dudek - Rochester Hills MI, US
Stephen Yurkovich - Columbus OH, US
Yann G. Guezennec - Upper Arlington OH, US

International Classification:

F02D 41/00
F02D 41/02

US Classification:

123703, 701109

Abstract:

A steady-state (SS) delay module determines a SS delay period for SS operating conditions based on an air per cylinder. A dynamic compensation module determines a predicted delay period based on first and second dynamic compensation variables for dynamic operating conditions, the SS delay period, a previous predicted delay period. The first dynamic compensation variable corresponds to a period between a first time when fuel is provided for a cylinder of an engine and a second time when exhaust gas resulting from combustion of the fuel and air is expelled from the cylinder. The SS and predicted delay periods correspond to a period between the first time and a third time when the exhaust gas reaches an exhaust gas oxygen sensor located upstream of a catalyst. A final equivalence ratio module adjusts fuel provided to the cylinder after the third time based on the predicted delay period.

US Patent:

8186336, May 29, 2012

Filed:

Nov 24, 2009

Appl. No.:

12/624779

Inventors:

Jason Meyer - Dayton OH, US
Shawn W. Midlam-Mohler - Columbus OH, US
Kenneth P. Dudek - Rochester Hills MI, US
Stephen Yurkovich - Columbus OH, US
Yann G. Guezennec - Upper Arlington OH, US

International Classification:

F02D 41/00

US Classification:

123695, 123696

Abstract:

An engine control system includes a proportional correction module and a variable proportional gain determination module. The proportional correction module generates a proportional correction for a fuel command to an engine based on a variable proportional gain and a difference between expected and measured amounts of oxygen in exhaust gas produced by the engine. The variable proportional gain determination module determines the variable proportional gain based on a nominal gain and an amount of time since a polarity of the difference has changed, wherein the nominal gain is based on engine operating parameters.

US Patent:

8224557, Jul 17, 2012

Filed:

Jan 14, 2010

Appl. No.:

12/687484

Inventors:

Sai S. V. Rajagopalan - Sterling Heights MI, US
Jason Meyer - Dayton OH, US
Shawn W. Midlam-Mohler - Columbus OH, US
Kenneth P. Dudek - Rochester Hills MI, US
Stephen Yurkovich - Columbus OH, US
Yann G. Guezennec - Upper Arlington OH, US

International Classification:

F02D 41/14

US Classification:

701109, 701103, 123672, 123703

Abstract:

A system includes a cylinder equivalence ratio (EQR) module, a location estimation module, a sensor module, and a fuel control module. The cylinder EQR module determines a first EQR corresponding to a first exhaust gas expelled from a first cylinder and determines a second EQR corresponding to a second exhaust gas expelled from a second cylinder. The location estimation module determines when the first and second exhaust gases mix in an exhaust manifold to form a third exhaust gas having a third EQR. The sensor module estimates an EQR of a fourth exhaust gas based on the third EQR. The fourth exhaust gas is located at an oxygen sensor in the exhaust manifold. The fuel control module controls an amount of fuel supplied to an engine based on a difference between the estimated EQR and an EQR corresponding to measurements from the oxygen sensor.

US Patent:

8265858, Sep 11, 2012

Filed:

Sep 30, 2009

Appl. No.:

12/570280

Inventors:

Jason Meyer - Dayton OH, US
Shawn W. Midlam-Mohler - Columbus OH, US
Kenneth P. Dudek - Rochester Hills MI, US
Stephen Yurkovich - Columbus OH, US
Yann G. Guezennec - Upper Arlington OH, US

International Classification:

F02D 41/00
F02D 41/02

US Classification:

701109, 123703

Abstract:

A calibration method comprises: determining a steady-state (SS) delay period from a first mapping of SS delay period indexed by air per cylinder (APC); determining a predicted delay period based on first and second dynamic compensation variables; outputting a theoretical delay period based on a calibration APC; determining the theoretical delay period from a second mapping of theoretical delay period indexed by APC; generating the calibration APC; populating the first mapping based on the theoretical delay and the calibration APC; determining the first and second dynamic compensation variables based on comparisons of the theoretical delay and the SS delay period; and selectively adjusting an amount of fuel provided to the cylinder based on the predicted delay period.

US Patent:

8347866, Jan 8, 2013

Filed:

Mar 17, 2010

Appl. No.:

12/725913

Inventors:

Jason Meyer - Dayton OH, US
Shawn W. Midlam-Mohler - Columbus OH, US
Kenneth P. Dudek - Rochester Hills MI, US
Stephen Yurkovich - Columbus OH, US
Yann G. Guezennec - Upper Arlington OH, US

International Classification:

F02D 41/00

US Classification:

123696, 123703

Abstract:

An engine control system includes a saturation determination module, an adjustment factor generation module, and a fuel control module. The saturation determination module determines when a first exhaust gas oxygen (EGO) sensor is saturated, wherein the first EGO sensor is located upstream from a catalyst. The adjustment factor generation module generates an adjustment factor for an integral gain of a fuel control module when the first EGO sensor is saturated. The fuel control module adjusts a fuel command for an engine based on differences between expected and measured amounts of oxygen in exhaust gas produced by the engine, a proportional gain, the integral gain, and the integral gain adjustment factor.