Carl W Squire

US Patent:

53577914, Oct 25, 1994

Filed:

Mar 15, 1993

Appl. No.:

8/031407

Inventors:

Thomas S. Gee - Canton MI
Thomas A. Schubert - Novi MI
Paul F. Smith - Dearborn Heights MI
Carl W. Squire - Taylor MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

G01M 1500

US Classification:

731181

Abstract:

Functionality of the exhaust gas oxygen sensor is determined by continually monitoring the exhaust gas oxygen sensor voltage to determine both a peak rich voltage and peak lean voltage. Based on the information after some predetermined time period, a system determines whether rich air/fuel ratio excursions are required and lean air/fuel ratio excursions are required. If a rich air/fuel excursion is required, then there is a command to decrease the air/fuel ratio to make it rich until the peak rich voltage is greater than a predetermined threshold voltage. Analogously, if a lean excursion is required, then there is a command to have a lean air/fuel ratio excursion done until the peak lean voltage is less than a predetermined threshold. If a time out happened before the peak rich voltage was greater than the rich threshold or the peak lean voltage was less than the lean threshold, then there is a determination that there is a malfunction detected on the sensor/circuit.

US Patent:

20160298930, Oct 13, 2016

Filed:

Apr 13, 2015

Appl. No.:

14/685068

Inventors:

Carl Wesley Squire - Dexter MI, US
Jamey Joseph Cates - Ann Arbor MI, US
David James Howarth - Ann Arbor MI, US

International Classification:

F41G 3/26

Abstract:

A target practice system includes a target, a first optical sensing unit that views an image on the target, a second optical sensing unit that views a user of the target system, and a data processing unit that communicates with the first optical sensing unit and the second optical sensing unit. The image on the target is either a static or dynamic image that changes over a defined time period, and an algorithm may be implemented in the data processing unit to analyze the image to determine shots on the image. The algorithm may also analyze a user image of the user captured by the second optical sensing unit to identify characteristics of the user.