Ronald J Patrick

US Patent:

6444114, Sep 3, 2002

Filed:

Mar 27, 2001

Appl. No.:

09/819258

Inventors:

Ronald S. Patrick - Mountain View CA
Fabio DeAmicis - Los Altos CA

Assignee:

ECM Engine Control and Monitoring - Los Altos CA

International Classification:

G01N 27407

US Classification:

205781, 204425, 204426, 205784, 2057845, 205788

Abstract:

A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO , O , H , and H O. The CEGA sensor-employs at least one additional electrode on a ceramic substrate which possess a different catalytic activity relative to the electrodes that normally found on a UEGO sensor. The ceramic substrate may be made of any suitable ceramic and is preferably made of zirconia. The difference in catalytic activity between the additional electrode(s) and the electrodes native to the UEGO sensor create an oxygen gradient which enables a measure of combustion completeness to be calculated. In combination with an air/fuel ratio measured by the sensor, the concentrations of different components in the emission can be calculated. Several methods, devices and systems which can be used with various types of ceramic sensors including a CEGA sensor in order to improve their performance are also provided.

US Patent:

6454931, Sep 24, 2002

Filed:

Mar 27, 2001

Appl. No.:

09/819229

Inventors:

Ronald S. Patrick - Mountain View CA
Fabio DeAmicis - Los Altos CA

Assignee:

ECM Engine Control and Monitoring - Los Altos CA

International Classification:

G01N 27407

US Classification:

205781, 204425, 204426, 205784, 2057845, 205788

Abstract:

A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO , O , H , and H O. The CEGA sensor-employs at least one additional electrode on a ceramic substrate which possess a different catalytic activity relative to the electrodes that normally found on a UEGO sensor. The ceramic substrate may be made of any suitable ceramic and is preferably made of zirconia. The difference in catalytic activity between the additional electrode(s) and the electrodes native to the UEGO sensor create an oxygen gradient which enables a measure of combustion completeness to be calculated. In combination with an air/fuel ratio measured by the sensor, the concentrations of different components in the emission can be calculated. Several methods, devices and systems which can be used with various types of ceramic sensors including a CEGA sensor in order to improve their performance are also provided.

US Patent:

7644576, Jan 12, 2010

Filed:

Apr 25, 2005

Appl. No.:

11/113292

Inventors:

Hiroshi Inagaki - Kounan, JP
Ronald S. Patrick - Los Altos CA, US

Assignee:

NGK Spark Plug Co., Ltd. - Nagoya

International Classification:

F01N 3/00

US Classification:

60276, 60277, 60285, 73 2333, 123688, 123690, 701107, 701109

Abstract:

A sensor control device is connected with a plurality of exhaust sensors including an NOx sensor to be disposed around a catalyst, and is constructed such that a plurality of drive control circuits to be connected in a one-to-one relationship with the individual gas sensors are disposed in one casing. The sensor control device is provided with a communication output section that outputs signals through a digital communication line so that the signal transmissions/receptions with an ECU may be executed through the digital communication line. This digital communication line is physically a one-system cable but can transmit and receive signals of a plurality of kinds with predetermined communication protocols.

US Patent:

61714704, Jan 9, 2001

Filed:

Aug 19, 1999

Appl. No.:

9/377437

Inventors:

Ronald S. Patrick - Mountain View CA
Fabio DeAmicis - Los Altos CA

Assignee:

ECM Engine Control and Monitoring - Los Alto CA

International Classification:

G01N 2741

US Classification:

2057845

Abstract:

A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO. sub. 2, O. sub. 2, H. sub. 2, and H. sub. 2 O. The CEGA sensor employs at least one additional electrode on a ceramic substrate which possess a different catalytic activity relative to the electrodes that normally found on a UEGO sensor. The ceramic substrate may be made of any suitable ceramic and is preferably made of zirconia. The difference in catalytic activity between the additional electrode(s) and the electrodes native to the UEGO sensor create an oxygen gradient which enables a measure of combustion completeness to be calculated. In combination with an air/fuel ratio measured by the sensor, the concentrations of different components in the emission can be calculated. Several methods, devices and systems which can be used with various types of ceramic sensors including a CEGA sensor in order to improve their performance are also provided.

US Patent:

6254750, Jul 3, 2001

Filed:

Jul 29, 1997

Appl. No.:

8/902552

Inventors:

Ronald S. Patrick - Mountain View CA
Fabio DeAmicis - Los Altos CA

Assignee:

ECM Engine Control and Monitoring - Los Altos CA

International Classification:

G01N 27407

US Classification:

204425

Abstract:

A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO. sub. 2, O. sub. 2, H. sub. 2, and H. sub. 2 O. The CEGA sensor employs at least one additional electrode on a ceramic substrate which possess a different catalytic activity relative to the electrodes that normally found on a UEGO sensor. The ceramic substrate may be made of any suitable ceramic and is preferably made of zirconia. The difference in catalytic activity between the additional electrode(s) and the electrodes native to the UEGO sensor create an oxygen gradient which enables a measure of combustion completeness to be calculated. In combination with an air/fuel ratio measured by the sensor, the concentrations of different components in the emission can be calculated. Several methods, devices and systems which can be used with various types of ceramic sensors including a CEGA sensor in order to improve their performance are also provided.

US Patent:

6149786, Nov 21, 2000

Filed:

Aug 19, 1999

Appl. No.:

9/377676

Inventors:

Ronald S. Patrick - Mountain View CA
Fabio DeAmicis - Los Altos CA

Assignee:

ECM Engine Control and Monitoring - Los Altos CA

International Classification:

G01N 27407

US Classification:

204401

Abstract:

A modified universal exhaust gas oxygen sensor, referred to herein as a CEGA sensor, is provided which can be used to measure the concentration of a variety of components of a gaseous fuel emission including CO, CO. sub. 2, O. sub. 2, H. sub. 2, and H. sub. 2 O. The CEGA sensor employs at least one additional electrode on a ceramic substrate which possess a different catalytic activity relative to the electrodes that normally found on a UEGO sensor. The ceramic substrate may be made of any suitable ceramic and is preferably made of zirconia. The difference in catalytic activity between the additional electrode(s) and the electrodes native to the UEGO sensor create an oxygen gradient which enables a measure of combustion completeness to be calculated. In combination with an air/fuel ratio measured by the sensor, the concentrations of different components in the emission can be calculated. Several methods, devices and systems which can be used with various types of ceramic sensors including a CEGA sensor in order to improve their performance are also provided.

US Patent:

20140216131, Aug 7, 2014

Filed:

Feb 4, 2013

Appl. No.:

13/815147

Inventors:

Ronald S. Patrick - Mountain View CA, US
Robert Lupul - Mountain View CA, US

Assignee:

Engine Control and Monitoring - Los Altos CA

International Classification:

G01M 15/10

US Classification:

73 2331

Abstract:

A simplified method for measuring a first property and a second property of an exhaust gas mixture utilizing two sensors manufactured for the purpose of measuring a first property, being cross-sensitive to the second property with an absorber of the second property being placed between two of the sensors in the exhausting circuit of the exhaust gas mixture. Direct differential measurement between the two sensors quantify the concentrations of the first and second property.

US Patent:

20140150528, Jun 5, 2014

Filed:

Feb 4, 2013

Appl. No.:

13/815148

Inventors:

Ronald S. Patrick - Mountain View CA, US
Robert Lupul - Mountain View CA, US

Assignee:

Engine Control and Monitoring - Los Altos CA

International Classification:

G01N 33/00

US Classification:

73 2331

Abstract:

A simplified method for measuring a first property and a second property of an exhaust gas mixture utilizing sensors manufactured for the purpose of measuring a first property, but having a cross-sensitivity to a second property of the exhaust gas mixture. Sensor response characteristics to the first property and the second property are accounted for and used in conjunction with a direct differential measurement between sensors to quantify the concentrations of a first and a second property.