Shane H Rachedi

US Patent:

6745151, Jun 1, 2004

Filed:

May 16, 2002

Appl. No.:

10/063828

Inventors:

Kenneth A. Marko - Ann Arbor MI
Doug Thornburg - Dearborn MI
George Halow - Farmington Hills MI
Shane Rachedi - Bloomfield Hills MI

Assignee:

Ford Global Technologies, LLC - Deaborn MI

International Classification:

G06F 1130

US Classification:

702182, 701 35

Abstract:

A diagnostic/prognostic system monitors performance of a vehicle or other apparatus wherein the vehicle has a plurality of operational components. Each operational component has a predetermined nominal operating state and generates respective electrical signals pursuant to its operation. A data collection memory in the vehicle stores samples of the electrical signals in a rolling buffer. An analyzer in the vehicle is responsive to the electrical signals for detecting a trigger event indicative of at least a potential variance of an operational component from its nominal operating state. A computation center located remotely from the vehicle has a database storing representations of electrical signals for classifying nominal and irregular operating states of the operational components. A transmitter is activated by the trigger event to transmit at least some of the stored samples in the rolling buffer at the time of the trigger event to the computation center. The computation center receives the transmitted samples and classifies them according to the nominal or irregular operating states.

US Patent:

44010923, Aug 30, 1983

Filed:

Jul 29, 1981

Appl. No.:

6/287846

Inventors:

Shane H. Rachedi - Dearborn MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F02M 2506

US Classification:

123568

Abstract:

An engine exhaust gas recirculation (EGR) system is provided in which a sonic flow EGR valve is moved to open positions to establish a different constant rate of flow at each open position of the EGR valve in response to air pressure acting on a servo means secured to the valve, the air pressure force being controlled by changes in a control vacuum opposing the air pressure force and modified by an air bleed device as a function of changes in engine exhaust gas backpressure levels, to provide an EGR valve movement that varies essentially in proportion to changes in engine air flow.

US Patent:

44099452, Oct 18, 1983

Filed:

May 9, 1983

Appl. No.:

6/493120

Inventors:

Shane H. Rachedi - Dearborn MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F02M 2506

US Classification:

123568

Abstract:

An EGR assembly of a sonic flow EGR valve and a fluid pressure actuated servo operated by air pressure modified by an air bleed device controlled in response to changes in carburetor venturi vacuum levels to provide EGR valve openings in proportion to engine air flow increases.

US Patent:

43985246, Aug 16, 1983

Filed:

Jul 24, 1981

Appl. No.:

6/286302

Inventors:

Shane H. Rachedi - Dearborn MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F02M 2506

US Classification:

123568

Abstract:

An EGR assembly of a sonic flow EGR valve and a fluid pressure actuated servo operated by air pressure modified by an air bleed device controlled in response to changes in carburetor venturi vacuum levels to provide EGR valve openings in proportion to engine air flow increases.

US Patent:

43985254, Aug 16, 1983

Filed:

Nov 12, 1981

Appl. No.:

6/320249

Inventors:

Daniel C. Ahrns - Livonia MI
Shane H. Rachedi - Dearborn MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F02M 2506

US Classification:

123568

Abstract:

An automotive type exhaust gas recirculation (EGR) system has two modes of operation, a first one that regulates EGR flow at a constant percentage rate as a function of throttle valve position independently of exhaust gas backpressure changes, and a second one that provides a variable percentage rate of flow of EGR gases in response to changes in exhaust gas backpressures, both modes utilizing carburetor ported vacuum modified by an air bleed device as the EGR valve opening force.