JEREMY THOMAS MCGARRY
Engineering in Erie, PA

7562945, Jul 21, 2009

Jul 24, 2007

11/782239

Mark Alan Linebach - McKean PA, US
Ajith Kuttannair Kumar - Erie PA, US
Bret Dwayne Worden - Union City PA, US
Jeremy T. McGarry - Erie PA, US
Scott Joseph Zarella - Erie PA, US

General Electric Company - Schenectady NY

B60T 8/34

3031132, 702 58, 361 63, 324509, 324522

A method and system is provided for detecting and performing diagnostics regarding an incipient ground fault that may occur in an electrical propulsion system of a traction vehicle, such as a locomotive, transit vehicle, or off-highway vehicle. The method allows providing a first ground connection for the electrical propulsion system. This first ground connection forms a grounding path generally used by the electrical propulsion system during normal operation. The method further allows providing a second ground connection for the electrical propulsion system. This second ground connection forms a grounding path selectively usable in lieu of the first ground connection. A control strategy is defined for switching between the first ground connection and the second ground connection. A respective leakage current associated with at least one of the first and second ground connections may be monitored. Switching between the first and second ground connections may be controlled based on the monitored leakage current associated with at least one of the first and second ground connections.

7344202, Mar 18, 2008

May 11, 2005

11/126801

Mark Alan Linebach - McKean PA, US
Ajith Kuttannair Kumar - Erie PA, US
Bret Dwayne Worden - Union City PA, US
Jeremy T. McGarry - Erie PA, US
Scott Joseph Zarella - Erie PA, US

General Electric Company - Schenectady NY

B60T 8/34

3031132, 702 58, 361 42, 361 63, 324509, 324522

A method and system is provided for detecting and performing diagnostics regarding an incipient ground fault that may occur in an electrical propulsion system of a traction vehicle, such as a locomotive, transit vehicle, or off-highway vehicle. The method allows providing a first ground connection for the electrical propulsion system. This first ground connection forms a grounding path generally used by the electrical propulsion system during normal operation. The method further allows providing a second ground connection for the electrical propulsion system. This second ground connection forms a grounding path selectively usable in lieu of the first ground connection. A control strategy is defined for switching between the first ground connection and the second ground connection. A respective leakage current associated with at least one of the first and second ground connections may be monitored. Switching between the first and second ground connections may be controlled based on the monitored leakage current associated with at least one of the first and second ground connections.

8584596, Nov 19, 2013

Oct 17, 2012

13/653553

Ajith Kuttannair Kumar - Erie PA, US
Adrian Jerzy Gorski - Erie PA, US
Jingjun Zhang - Erie PA, US
Jeremy Thomas McGarry - Erie PA, US

General Electric Company - Schenectady NY

B61D 1/00

1051571, 105166, 105168

Vehicle suspension systems including a truck and a spring system for an axle are provided. In one example, a truck includes an unpowered axle spring system that is configured to generate an overall unpowered axle separation force between a truck frame and an unpowered axle carrier. The overall unpowered axle separation force has a rate of decrease that increases past a first separation distance between the truck frame and the unpowered axle carrier. A powered axle spring system is configured to generate a powered axle separation force between the truck frame and a powered axle carrier. The powered axle separation force has a rate of decrease that decreases past a second separation distance between the truck frame and the powered axle carrier.

8196519, Jun 12, 2012

Oct 7, 2009

12/574914

Ajith Kuttannair Kumar - Erie PA, US
Bret Worden - Erie PA, US
Jeremy Thomas McGarry - Erie PA, US

General Electric Company - Schenectady NY

B61C 15/04

105 75, 105 73, 105209, 105194

Methods and systems are provided for a vehicle having a plurality of axles and a lift mechanism configured to dynamically transfer weight from one axle to another. In one example, the method comprises, responding to an operating condition by adjusting the lift mechanism to provide a determined amount of lift, and in response to vehicle braking, a vehicle stall risk, poor infrastructure conditions, and/or a high vehicle penalty, reducing the determined amount of lift.

2013008, Apr 4, 2013

Oct 1, 2012

13/632320

GENERAL ELECTRIC COMPANY - Schenectady NY, US
Jeremy McGarry - Erie PA, US

GENERAL ELECTRIC COMPANY - Schenectady NY

B61C 15/12

318 52

A control method comprises determining wheel creep of a wheel operably coupled to a traction motor and limiting a rate of change of an excitation frequency applied to the traction motor to drive the wheel, based on the determined wheel creep. According to one aspect, the rate of change of the excitation frequency is limited if the wheel creep exceeds a wheel creep threshold.

7285926, Oct 23, 2007

Jun 30, 2005

11/173299

Jeremy Thomas McGarry - Erie PA, US
Somakumar Ramachandra-Panicker - Bangalore, IN
Ajith Kuttannair Kumar - Erie PA, US
Venkatarao Ryali - Bangalore, IN
Bret Dwayne Worden - Union City PA, US
Jeffrey Louis Daigle - Erie PA, US
Paul Kenneth Houpt - Schenectady NY, US

General Electric Company - Niskayuna NY

B61C 15/08

318 52, 318362, 318 63, 318821, 318371

A traction control system for controlling an electric traction motor drivingly coupled to a wheel of a tractive vehicle. The traction control system includes means for determining speed of the wheel, means for determining tractive effort of the wheel and a control circuitry for controlling drive signals to the motor based upon the wheel speed and tractive effort.

2012025, Oct 4, 2012

Jun 8, 2012

13/492610

Ajith Kuttannair Kumar - Erie PA, US
Bret Worden - Erie PA, US
Jeremy Thomas McGarry - Erie PA, US

GENERAL ELECTRIC COMPANY - Schenectady NY

B61C 15/04

701 19, 105 75

Methods and systems are provided for a vehicle having a plurality of axles and a lift mechanism configured to dynamically transfer weight from one axle to another. In one example, the method comprises, responding to an operating condition by adjusting the lift mechanism to provide a determined amount of lift, and in response to vehicle braking, a vehicle stall risk, poor infrastructure conditions, and/or a high vehicle penalty, reducing the determined amount of lift.

2011008, Apr 7, 2011

Oct 7, 2009

12/574929

Ajith Kuttannair Kumar - Erie PA, US
Bret Worden - Erie PA, US
Jeremy Thomas McGarry - Erie PA, US

GENERAL ELECTRIC COMPANY - Schenectady NY

B61F 5/36, G05D 1/02

701 19, 105209

Methods and systems are provided for controlling a vehicle having a first truck with a first lift mechanism and a second truck with a second lift mechanism, each of the first and second trucks further configured with a plurality of axles, each of the first and second lift mechanisms configured to dynamically transfer weight from one axle to another. In one embodiment, the method comprises, responding to an operating condition by adjusting the first lift mechanism different from the second lift mechanism.

2002014, Oct 10, 2002

Apr 6, 2001

09/828382

Ajith Kumar - Erie PA, US
Jeremy McGarry - Erie PA, US

H02H003/08, H02H005/04

361/093900, 361/093800, 361/092000

A method for detecting electrical faulty conditions in a plurality of power devices of a propulsion system is provided. The plurality of power devices is connectable in parallel circuit through a direct current (DC) link to an external DC power source. The method provides a first sequence of actions for determining an electrical short condition in at least one of the power devices upon the power source being connected. The method further provides a second sequence of actions for determining an electrical open condition in a respective one of the plurality of power devices during the occurrence of high current events.