David Farmer (born 9 July 1955 in London) is a theatre director, playwright, drama consultant and yoga teacher. Contents. 1 Biography; 2 Writing and ...
Isbn (Books And Publications)
Groups And Symmetry: A Guide To Discovering Mathematics
Gopichandra Surnilla - West Bloomfield MI David George Farmer - Plymouth MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F01N 300
US Classification:
60285, 60274, 60286, 60297
Abstract:
An exhaust gas treatment system for an internal combustion engine includes a pair of upstream emission control devices which respectively receive the exhaust gas generated by a respective group of cylinders, and a single, shared downstream emission control device receiving catalyzed exhaust gas from each of the upstream emission control devices. After the downstream device stores a selected constituent gas generated when each cylinder group is operating âlean,â the downstream device is purged by operating the first cylinder group with a stoichiometric air-fuel mixture while operating the second cylinder group with a rich air-fuel mixture, such that the combined catalyzed exhaust gas flowing through the downstream device during the purge event has an air-fuel ratio slightly rich of stoichiometry. As a result, the invention improves overall vehicle fuel economy because only one of the upstream devices is purged of stored oxygen when purging the downstream device of previously-stored constituent gas.
Open-Loop Method And System For Controlling The Storage And Release Cycles Of An Emission Control Device
David George Farmer - Plymouth MI Gopichandra Surnilla - West Bloomfield MI Michael John Cullen - Northville MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F01N 300
US Classification:
60285, 60274, 60295, 60297, 60276
Abstract:
A method and system for controlling the operation of an internal combustion engine, wherein exhaust gas generated by the engine is directed through an emission control device, includes determining instantaneous rates of storage for a constituent of the exhaust gas, such as NO , as well as the capacity reduction of the device to store the exhaust gas constituent as a function of a calculated value representing an amount of SO which has accumulated in the device since a prior device-regeneration (desulfation) event. The calculated accumulated SO value is also preferably used to schedule a device-regeneration event, as when the calculated accumulated SO value exceeds a predetermined threshold value.
Method And System For Preconditioning An Emission Control Device For Operation About Stoichiometry
David George Farmer - Plymouth MI Gopichandra Surnilla - West Bloomfield MI
Assignee:
Ford Global Technologies, Inc. - Dearborn MI
International Classification:
F01N 300
US Classification:
60285, 60276, 60274, 701109
Abstract:
An exhaust gas treatment system for an internal combustion engine includes a three-way catalyst and a NO device located downstream of the three-way catalyst. The device is preconditioned for emissions reduction at engine operating conditions about stoichiometry by substantially filling the device with oxygen and NO ; and purging stored oxygen and stored NO from only an upstream portion of the device, whereupon the upstream portion of the device operates to store oxygen and NO during subsequent lean transients while the downstream portion of the device operates to reduce excess HC and CO during subsequent rich transients.
Method And System For Transitioning Between Lean And Stoichiometric Operation Of A Lean-Burn Engine
Gopichandra Surnilla - West Bloomfield MI David George Farmer - Plymouth MI
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
F02B 1700
US Classification:
123295, 123443, 123673
Abstract:
An exhaust treatment system for an internal combustion engine includes a catalytic emission control device. When transitioning the engine between a lean operating condition and a stoichiometric operating condition, as when scheduling a purge of the downstream device to thereby release an amount of a selected exhaust gas constituent, such as NO , that has been stored in the downstream device during the lean operating condition, the air-fuel ratio of the air-fuel mixture supplied to each cylinder is sequentially stepped from an air-fuel ratio of at least about 18 to the stoichiometric air-fuel ratio. The purge event is preferably commenced when all but one cylinders has been stepped to stoichiometric operation, with the air-fuel mixture supplied to the last cylinder being stepped immediately to an air-fuel ratio rich of a stoichiometric air-fuel ratio.
Closed-Loop Method And System For Purging A Vehicle Emission Control
David George Farmer - Plymouth MI Gopichandra Surnilla - West Bloomfield MI
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
F02M 3704
US Classification:
701104, 701109, 701108, 60276
Abstract:
A vehicle exhaust treatment system includes an emission control device featuring at least one upstream NO -storing âbrick,â and a downstream NO -storing âbrickâ that is substantially smaller in nominal capacity than the upstream brick. An oxygen sensor positioned between the upstream and downstream bricks generates an output signal representing the concentration of oxygen in the device. A controller selects a rich operating condition to purge the device of stored NO , and deselects the rich, NO -purging engine operating condition in response to the sensor output signal, preferably after an additional time delay calculated to provide sufficient excess hydrocarbons to release substantially all stored NO from the downstream brick.
Throttle Valve Position Determination Using Accelerator Pedal Position
David George Farmer - Plymouth MI David Oshinsky - Trenton MI
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
F02D 100
US Classification:
123396, 123399, 73116
Abstract:
A closed throttle position of a vehicle internal combustion engine is determined by storing a plurality of signal values representative of previous foot-off position values of an accelerator pedal ( ) within a normal range of pedal positions, determining a current foot-off position value of the accelerator pedal, comparing the current foot-off position value to an average of the previous stored foot-off position values, and using the average as the closed pedal position to determine a closed throttle position when the comparison is indicative of an abnormal pedal position.
Gopichandra Sumilla - Westland MI Jing Sun - Bloomfield MI David George Farmer - Plymouth MI Ilya V. Kolmanovsky - Ypsilanti MI
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
F01N 300
US Classification:
60274, 60285, 60286, 123 9015, 123443, 123692
Abstract:
A control method for an internal combustion engine has multiple cylinder groups with at least one control device positioned between an intake manifold and a cylinder group. The engine operates the cylinder groups at different air/fuel ratio and uses the control device to balance torque produced by the different cylinder groups. In one aspect of the invention, one cylinder group is operated rich and another cylinder group is operated lean thereby providing heat to an exhaust system located downstream of the engine.
Electronic Throttle Plate Index Position Determination For Improved Airflow Correlation Over Various Temperature Conditions
David George Farmer - Plymouth MI David Oshinsky - Trenton MI Edward Badillo - South Lyon MI
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
G01K 1500
US Classification:
702 99, 702 94
Abstract:
A system ( ) and method for determining the closed position of a throttle plate of an internal combustion engine ( ) are provided. The system ( ) includes a throttle sensor ( ), a temperature sensor ( or ), and an electronic control unit (ECU) ( ). The throttle sensor ( ) generates a signal indicative of the position of the throttle plate ( ). The temperature sensor ( or ) generates a signal indicative of the temperature of a throttle body ( ) of the engine ( ). The ECU ( ) is configured to select one of a first closed position value indicated by throttle sensor ( ) signal and a second closed position value retrieved from a memory ( ) responsive to the measured temperature. The inventive system is able to minimize inaccuracies in throttle plate position detection by eliminating errors resulting from a change in geometry between the throttle plate ( ) and the throttle body ( ) of the engine during relatively high temperatures.
Dr. Farmer graduated from the Tulane University School of Medicine in 1999. He works in Cambridge, MA and specializes in Cardiovascular Disease. Dr. Farmer is affiliated with Mount Auburn Hospital.
Western New York Immediate Care 7616 Transit Rd, Buffalo, NY 14221 716 204-2273 (phone), 716 817-9905 (fax)
Sisters Of Charity Hospital St Joseph Emergency 2605 Harlem Rd, Buffalo, NY 14225 716 891-2461 (phone), 716 891-2478 (fax)
Western New York Immediate Care Pulse Occupational Medicine 2099 Niagara Fls Blvd, Buffalo, NY 14228 716 564-2273 (phone), 716 564-2272 (fax)
Languages:
English
Description:
Mr. Farmer works in Williamsville, NY and 2 other locations and specializes in Emergency Medicine and Urgent Care Medicine. Mr. Farmer is affiliated with Sisters Of Charity Hospital Saint Joseph Campus.
Intice™ has created an simple, effective and inexpensive way to increase your dealership's website to showroom conversion.We utilize our incentive based coupon system to intice™ your customers to ...
Software Analyst at Chartway Federal Credit Union DAVID FARMER: SOFTWARE ANALYST | TECHNICAL SUPPORT ENGINEER
[email protected] 757.575.9451
101 Lord’s Ct. Apt 201 Virginia Beach, VA 23452
... DAVID FARMER: SOFTWARE ANALYST | TECHNICAL SUPPORT ENGINEER
[email protected] 757.575.9451
101 Lord’s Ct. Apt 201 Virginia Beach, VA 23452
Overview and Summary of Expertise
I am the go to Systems Analyst and Technical Support Engineer with a diverse background in:
Business Data...