Yi L Liu

US Patent:

6883311, Apr 26, 2005

Filed:

Jul 2, 2003

Appl. No.:

10/612173

Inventors:

Yi Liu - Troy MI, US

Assignee:

Detroit Diesel Corporation - Detroit MI

International Classification:

F01N003/00

US Classification:

60295, 60274, 60286, 60287, 60288, 60298, 60303

Abstract:

An apparatus, a system, and a method for treating exhaust gases from an internal combustion engine. The system and method employing the use of a catalytic device coaxial-arranged dual leg apparatus comprising a housing having a first flow path and a second flow path having coaxially arranged portions, a device for selectively directing the exhaust gases between the first flow path and the second flow path, and a first NOx adsorbing catalyst contained in the first flow path.

US Patent:

7942043, May 17, 2011

Filed:

Feb 19, 2009

Appl. No.:

12/388869

Inventors:

Yi Liu - Troy MI, US
Kevin Dean Sisken - Saline MI, US

Assignee:

Detroit Diesel Corporation - Detroit MI

International Classification:

G01M 15/04

US Classification:

7311475, 7311461

Abstract:

A method to determine hydrocarbon slip in a compression ignition engine equipped with an electronic control unit having memory and coupled to an exhaust gas aftertreatment system having a diesel oxidation catalyst, a diesel particulate filter, a selective catalyst reducer and a clean up diesel oxidation catalyst.

US Patent:

8481920, Jul 9, 2013

Filed:

Jul 19, 2011

Appl. No.:

13/186086

Inventors:

Feyzi Inanc - Spring TX, US
W. Allen Gilchrist - Fort Davis TX, US
Eric Sullivan - Houston TX, US
Tu Tien Trinh - Houston TX, US
Yi Liu - Houston TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 5/04

US Classification:

250254, 2502691, 2502692, 2502693, 2502694

Abstract:

In one aspect, the present disclosure provides an apparatus for determining formation density. One embodiment of the apparatus includes a bottomhole assembly having a drill bit attached to end thereof for drilling through a formation, a first sensor in the drill bit configured to provide first signals for determining a first density of the formation proximate to the drill, a second sensor distal from the first sensor configured to provide signals for determining density of a second density of the formation, and a processor configured to determine the formation density from the first density and the second density.

US Patent:

8633434, Jan 21, 2014

Filed:

Jan 26, 2011

Appl. No.:

13/014208

Inventors:

Steven Bliven - Magnolia TX, US
Yi Liu - Houston TX, US
Constantyn Chalitsios - Houston TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 5/10

US Classification:

2502694

Abstract:

An apparatus for irradiating an earth formation is disclosed. The apparatus includes: a carrier configured to be disposed in the formation; a neutron tube disposed at the carrier and located on an axis; and a high voltage power source disposed at the carrier and electrically connected to the neutron tube, the high voltage power source being offset from the axis.

US Patent:

20100050757, Mar 4, 2010

Filed:

Aug 28, 2008

Appl. No.:

12/199882

Inventors:

Yi Liu - Troy MI, US
Kevin Dean Sisken - Saline MI, US

Assignee:

Detroit Diesel Corporation - Detroit MI

International Classification:

G01M 15/04

US Classification:

7311475, 702183

Abstract:

A method for determining the efficiency of a diesel oxidation catalyst (DOC) having an inlet and an outlet for the flow of an exhaust gas stream in an exhaust system used in conjunction with an electronic controlled internal combustion engine equipped with an Electronic Control Unit (ECU) having memory, comprising:determining temperature of the exhaust gas stream at the DOC inlet;determining temperature of the exhaust gas stream at the DOC outlet;determining the energy released from the DOC; andcomparing an actual change in temperature of the DOC out to a virtual temperature of the DOC out to determine whether the combustion efficiency of the DOC is below a predetermined value.

US Patent:

20110186723, Aug 4, 2011

Filed:

Jan 26, 2011

Appl. No.:

13/014211

Inventors:

Constantyn Chalitsios - Houston TX, US
Yi Liu - Houston TX, US
Steven Bliven - Magnolia TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01V 5/10

US Classification:

2502694, 2502691, 2502696

Abstract:

An apparatus for estimating at least one property of an earth formation is disclosed. The apparatus includes: a carrier configured to be disposed in the formation; a neutron tube disposed at the carrier and located on an axis; a high voltage power source disposed in the carrier and electrically connected to the neutron tube, the high voltage power source located remotely from the neutron tube; and at least one detector disposed in the carrier and located proximate to the neutron tube.

US Patent:

20110253448, Oct 20, 2011

Filed:

Apr 18, 2011

Appl. No.:

13/088892

Inventors:

Tu Tien Trinh - Houston TX, US
Eric Sullivan - Houston TX, US
David A. Curry - Askett, GB
Xiaomin C. Cheng - The Woodlands TX, US
Feyzi Inanc - Spring TX, US
Yi Liu - Houston TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

E21B 49/00

US Classification:

175 50

Abstract:

A drill bit made according to one embodiment includes a source configured to induce radiation into a formation during drilling of a wellbore and a sensor in the drill bit configured to detect radiation from the formation responsive to the radiation induced by the source. The drill bit may further include a circuit configured to process signals received from the sensor to estimate a property of the formation.

US Patent:

20110304346, Dec 15, 2011

Filed:

Jun 7, 2011

Appl. No.:

13/155034

Inventors:

Rocco DiFoggio - Houston TX, US
Yi Liu - Houston TX, US
Louis Perez - Houston TX, US
Paul Bergren - Houston TX, US
Kerry L. Sanderlin - Houston TX, US

Assignee:

BAKER HUGHES INCORPORATED - Houston TX

International Classification:

G01R 27/04
H01L 41/22

US Classification:

324633, 29 2535

Abstract:

Disclosed is an apparatus for estimating a property of a fluid. The apparatus includes: a piezoelectric resonator configured to be disposed in the fluid; an electrode embedded in the piezoelectric resonator and included in a resonator circuit configured to output an electrical signal related to the property; a discontinuity defined by a surface of the piezoelectric resonator, the discontinuity altering an impedance of the resonator circuit if a high-dielectric fluid or a conductive fluid is disposed in the discontinuity; and an insulating material disposed in the discontinuity.