Brock S Fraser

US Patent:

20070059188, Mar 15, 2007

Filed:

Oct 3, 2005

Appl. No.:

11/242344

Inventors:

Brock Fraser - Asheville NC, US
Adam Reinke - Arden NC, US
Neal Narron - Asheville NC, US

Assignee:

BorgWarner Inc. - Auburn Hills MI

International Classification:

F04B 17/00

US Classification:

417407000

Abstract:

A turbocharger unit having an aerodynamically enhanced pocket, comprising a turbine having a turbine housing and a turbine wheel connected to a shaft along with a compressor having a compressor housing and a compressor wheel mounted on the same shaft. There is an intermediate housing disposed between the turbine housing and the compressor housing, circumscribing the shaft, and having a compressor wheel pocket. There is a series of bearings located in the intermediate housing for supporting the shaft. There is also a series of fluid passages located in the intermediate housing which provide fluid to lubricate the bearings. A seal is used for the prevention of oil from entering the compressor wheel pocket. The compressor wheel pocket has an aerodynamically enhanced pocket for the improvement of pressure balance behind the compressor wheel, preventing the oil in the intermediate housing from entering the compressor housing.

US Patent:

20110061381, Mar 17, 2011

Filed:

Feb 24, 2009

Appl. No.:

12/919058

Inventors:

Michael E. Harris - Fairview NC, US
Brock Fraser - Asheville NC, US

Assignee:

BORGWARNER INC. - Auburn Hills MI

International Classification:

F02C 6/12

US Classification:

60612

Abstract:

A two-stage turbocharging system with a high pressure (HP) turbine and a low pressure (LP) turbine, exhaust piping connecting an engine to the HP turbine inlet, exhaust piping connecting the HP turbine outlet to the LP turbine inlet, piping connecting the LP turbine outlet to an aftertreatment device, and branched bypass piping having an inlet and first and second branches, the inlet connected to the engine to HP turbine inlet exhaust piping, the first branch outlet connected to the LP turbine inlet, the second branch outlet connected to the aftertreatment device, and an R2S valve in the first branch and a warm-up valve in said second branch. By opening of the valve, exhaust gas can bypass both the HP and LP turbines and flow to, e.g., the catalytic converter. The R2S valve and the warm-up valve may be integrated into a single exhaust flow control unit.

US Patent:

20130152582, Jun 20, 2013

Filed:

Aug 30, 2011

Appl. No.:

13/817906

Inventors:

Paul K. Anschel - Asheville NC, US
David G. Grabowska - Asheville NC, US
Brock Fraser - Asheville NC, US

Assignee:

BORGWARNER INC. - Auburn Hills MI

International Classification:

F02M 25/07

US Classification:

606052, 415145

Abstract:

To solve the problems of compressor wheel blade flow separation causing surge type noises when a compressor return or recirculation valve is opened or closed, bypass airflow from a compressor recirculation valve is fed into an annular volume, defined between inner and outer walls or shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from the compressor recirculation valve is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity.

US Patent:

20190284992, Sep 19, 2019

Filed:

Mar 14, 2018

Appl. No.:

15/921187

Inventors:

- Auburn Hills MI, US
Frederick M. Huscher - Hendersonville NC, US
Brock S. Fraser - Asheville NC, US
Allen Stoner - Fletcher NC, US

Assignee:

BorgWarner Inc. - Aubum Hills MI

International Classification:

F02B 39/00
F01D 15/10
F02B 37/10
F02B 39/10
F02B 39/14
H02K 5/20
H02K 7/08
H02K 7/14
H02K 7/18
H02K 9/19

Abstract:

In a lubrication and cooling system for an electric machine operably driven by a turbine, a rotatable shaft may extend through an electric machine housing and a first and second bearing may be operably spaced apart from each other and coupled to the rotatable shaft. Furthermore, an electromagnetic rotor may be coupled to the rotatable shaft and disposed between the first and second bearings. A stator may be fixedly attached within the electric machine housing such that the electromagnetic rotor freely rotates along with the rotatable shaft. Additionally, a fluid passage defined in the electric machine housing delivers a portion of fluid to lubricate the first and second bearings and the remaining portion of fluid to circumferentially flow around the stator such that the fluid is in thermal communication with an outside surface of the stator to help maintain a desired operating temperature of the electric machine.