Christopher K Davey

US Patent:

6397583, Jun 4, 2002

Filed:

Mar 8, 2001

Appl. No.:

09/802810

Inventors:

Christopher K. Davey - Novi MI
David Robert Nader - Farmington Hills MI
Michael Igor Kluzner - Oak Park MI
Paul Raymond Willette - Warren MI
Robert Joseph Jerger - Dexter MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 300

US Classification:

60277, 60274, 60285

Abstract:

Method and system are provided for monitoring performance of a catalytic converter coupled to an exhaust of an internal combustion engine supplied with fuel from a fuel tank where the fuel can include a first fuel and second fuel in concentrations that vary from one refueling to the next. A ratio indicative of catalytic converter exhaust gas conversion efficiency is determined from signals provided by an exhaust gas sensor disposed upstream and an exhaust gas sensor disposed downstream relative to the catalytic converter, and a ratio threshold value indicative of a malfunctioning catalytic converter is adjusted in dependence on the concentration of one of the first fuel and second fuel in the fuel in the fuel tank.

US Patent:

6401452, Jun 11, 2002

Filed:

Aug 25, 2000

Appl. No.:

09/648055

Inventors:

Christopher Kirk Davey - Novi MI
Robert Joseph Jerger - Dexter MI
David Robert Nader - Farmington Hills MI
Michael Igor Kluzner - Oak Park MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 300

US Classification:

60277, 60274

Abstract:

A catalytic monitoring method for an engine having two engine banks of which each coupled to one of two catalytic converters using first and second exhaust gas oxygen sensors respectively, upstream and downstream of one catalytic converter. Third and fourth exhaust gas oxygen sensors are respectively coupled upstream and downstream of the other catalytic converter. Switch ratios are determined for each of the engine banks based on the switching ratios of each upstream and downstream pair of exhaust gas oxygen sensors. A combination of the switch ratios is used to determine overall catalytic converter system performance.

US Patent:

6644097, Nov 11, 2003

Filed:

Jul 30, 2002

Appl. No.:

10/208532

Inventors:

Christopher Kirk Davey - Novi MI
David Robert Nader - Farmington Hills MI
Jeffrey Scott Hepburn - Dearborn MI
Michael Igor Kluzner - Oak Park MI
Robert Joseph Jerger - Dexter MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

G01N 33497

US Classification:

73 2332

Abstract:

A method of determining the type of fuel being burned in an engine by analyzing the signal provided by a exhaust gas oxygen sensor signal is disclosed. The determination is based on the ratio of the value of certain characteristics of the signal during the lean and rich portions of the signal.

US Patent:

7481915, Jan 27, 2009

Filed:

Sep 12, 2003

Appl. No.:

10/661757

Inventors:

Christopher K. Davey - Novi MI, US
David Robert Nader - Farmington Hills MI, US
Kenneth John Behr - Farmington Hills MI, US
Michael Igor Kluzner - Oak Park MI, US
Michael James Uhrich - West Bloomfield MI, US
Robert Joseph Jerger - Dexter MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

G01N 27/407
G01K 7/16

US Classification:

205785, 204424, 73 2332, 374142, 374144

Abstract:

A system for determining a temperature of exhaust gases from an engine is provided. The system includes an exhaust gas sensor having an electric heating coil. The sensor communicates with exhaust gases from the engine. The system further includes an electrical circuit for generating a signal indicative of the resistance of the heating coil when the coil is not energized. Finally, the system includes a controller receiving the signal and calculating the temperature of the exhaust gases based on the signal.

US Patent:

20130042231, Feb 14, 2013

Filed:

Aug 10, 2011

Appl. No.:

13/206615

Inventors:

Christopher K. Davey - Novi MI, US
Rajya Adibhatla - Novi MI, US
Chad Evert Esselink - Canton MI, US
Gerald P. Humphreys - Davisburg MI, US
Salwan H. Ishac - West Bloomfield MI, US

Assignee:

FORD GLOBAL TECHNOLOGIES, LLC - Dearborn MI

International Classification:

G06F 9/445

US Classification:

717174

Abstract:

A computer-implemented method includes receiving a restore command to restore a vehicle computing system (VCS) system state. The method further includes restoring a base system state to a known, functional state and obtaining a list of applications previously installed on the VCS. The method also includes for each application previously installed on the VCS, finding a version of the application compatible with the restored base system state. Also, the method includes installing the version of each application compatible with the restored base system state.

US Patent:

55444814, Aug 13, 1996

Filed:

Mar 31, 1995

Appl. No.:

8/414569

Inventors:

Christopher K. Davey - Farmington Hills MI
Donald F. Dickison - Sterling Heights MI
Robert J. Jerger - Livonia MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F01N 310

US Classification:

60274

Abstract:

An air/fuel control system (10) and method for an engine (28) coupled to a catalytic converter (50) includes monitoring of the converter (50). Engine air/fuel ratio is controlled (104-178) in response to a pair of two-state signals generated by comparing the outputs of respective upstream (44, 55) and downstream (52) exhaust gas oxygen sensors to a reference voltage. The transitions in the downstream sensor are indicated when a difference in its output amplitude changes signs and a difference between stored peak values occurring during two successive changes in the sign exceeds a predetermined value (200-350). Converter efficiency is indicated from a ratio of transitions in the downstream sensor transitions to transitions in the upstream sensor output which are generated in a similar manner (690-770).

US Patent:

57460493, May 5, 1998

Filed:

Dec 13, 1996

Appl. No.:

8/768003

Inventors:

Michael John Cullen - Northville MI
Steven Dinsdale - Little Evesden, GB
Christopher K. Davey - Novi MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 320

US Classification:

60274

Abstract:

An engine control computer estimates NO. sub. x trap temperature based on an estimated midbed temperature of a three-way catalytic converter located upstream from the trap and the effect on NO. sub. x trap temperature of introducing air into the exhaust upstream of the trap during purging of the trap.

US Patent:

60189444, Feb 1, 2000

Filed:

Oct 16, 1998

Appl. No.:

9/174179

Inventors:

Christopher Kirk Davey - Novi MI
Robert Joseph Jerger - Livonia MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 300

US Classification:

60274

Abstract:

A system and method for monitoring emissions by monitoring performance of a catalytic converter using a predetermined indicated threshold value include determining a current value for the indicator based on signals generated by at least one exhaust gas sensor, modifying a historical indicator value based on the current value, and adjusting the predetermined indicator threshold based on the historical indicator value. The predetermined indicator threshold is adjusted provided various adapt criteria are satisfied. The historical indicator value is compared to the threshold to determine whether to generate a malfunction indicator signal. In one embodiment, emissions are indicated using a switch ratio based on the number of switches or transitions for upstream and downstream exhaust gas oxygen sensors.