Keith M Van

US Patent:

6703739, Mar 9, 2004

Filed:

Aug 22, 2002

Appl. No.:

10/226182

Inventors:

Eric Brian Schutt - Oxford MI
Keith D. Van Maanen - Bloomfield Hills MI
Addison T. Solak - Ypsilanti MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H02K 4900

US Classification:

310 96, 310 89

Abstract:

A powertrain includes a rotary input member such as an engine crankshaft, a torque coupling such as a hydraulic torque converter, a drive plate, such as a flex plate or spider, connecting the input member to the coupling, and an annular generator rotor having an electrical power annulus, such as an annular induction member extending around the coupling, and a mounting ring fixed to the power annulus and including means extending inward for securing the mounting ring to the coupling and to the drive plate. Several embodiments of mounting rings and assemblies are disclosed which improve methods for assembly of the powertrain.

US Patent:

8020650, Sep 20, 2011

Filed:

Mar 19, 2009

Appl. No.:

12/407143

Inventors:

Keith D. Van Maanen - Birmingham MI, US
Sean E. Gleason - West Bloomfield MI, US
Chandra S. Namuduri - Troy MI, US
Steven V. Wybo - Grosse Park MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B60W 10/00
B60L 9/00

US Classification:

180 65265, 701 22

Abstract:

A method sustains auxiliary power generation aboard a mild hybrid electric vehicle (HEV) in response to a high-voltage (HV) electrical fault condition and executes one of a pair of default limp-home modes depending on the state of the engine at the time of the fault. Each limp-home mode sustains auxiliary power generation during the fault, and at least one mode charges capacitors in the HV bus circuit to provide magnetizing current to a motor generator unit (MGU). An HEV includes a controller and algorithm for sustaining auxiliary power generation during the above fault condition, with the algorithm adapted to control output of an auxiliary power module (APM) and execute one of a pair of default limp-home modes, including a mode in which the APM charges the capacitors to enable a power inverter module (PIM) to provide an initial excitation current to the MGU after the starter motor restarts the engine.

US Patent:

8116932, Feb 14, 2012

Filed:

Feb 25, 2009

Appl. No.:

12/392411

Inventors:

Steven A. Tarnowsky - West Bloomfield MI, US
Michael E. Polom - Oakland Township MI, US
Roger Joseph Rademacher - Holt MI, US
Donald D. Crites - Washington MI, US
Keith D. Van Maanen - Birmingham MI, US
Brian M Porto - Novi MI, US
Michael Chernyak - Farmington Hills MI, US

International Classification:

G01M 17/00
F04B 49/02

US Classification:

701 29, 701 31, 701 66, 417 24

Abstract:

A system includes an auxiliary pump that provides pressurized fluid to a transmission during an engine auto stop/start event. A mechanical pump provides pressurized fluid to a transmission during engine operation after the engine auto stop/start event. An auxiliary pump diagnostic system includes a slip determination module that determines slip of a torque converter based on an engine speed and a transmission input speed. A fault determination module diagnoses a fault in the auxiliary pump in response to an engine auto start and based on the slip of the torque converter.

US Patent:

8314578, Nov 20, 2012

Filed:

Feb 23, 2010

Appl. No.:

12/710424

Inventors:

Chandra S. Namuduri - Troy MI, US
Bryan M. Ludwig - West Bloomfield MI, US
Keith D. Van Maanen - Birmingham MI, US
Suresh Gopalakrishnan - Farmington Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H02P 27/06

US Classification:

3184003, 31840001, 318700

Abstract:

A hybrid powertrain system includes an electric motor/generator unit having a multiphase asynchronous AC machine electrically connected to a multiphase bridge inverter. A high-voltage capacitor is electrically connected between positive and negative sides of a high-voltage DC power bus. High-voltage DC bus pre-charge circuits are electrically connected between gate drive bias power supplies and the multiphase bridge inverter. A low-voltage battery electrically charges the high-voltage DC link capacitor via the gate drive bias power supplies and the high-voltage DC bus pre-charge circuits when the high-voltage energy storage system is disconnected from the high-voltage DC power bus.

US Patent:

8466586, Jun 18, 2013

Filed:

Oct 3, 2008

Appl. No.:

12/244838

Inventors:

James E. Tarchinski - Rochester Hills MI, US
William J. Omell - Washington Township MI, US
Keith D. Van Maanen - Birmingham MI, US
Ryan M. Meroz - Rochester MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

F16P 3/20

US Classification:

307328, 108 651, 439350

Abstract:

A vehicle includes a high-voltage (HV) energy storage system (ESS), an HV device having HVIL source and return (SR) pins and an HV receptacle, an HV cable, and an HV terminal assembly. The assembly includes a tray portion and retainer for aligning the HV cables with the HV receptacle. An HVIL jumper device is connected to the tray portion and electrically connectable to the HVIL SR pins. The assembly includes a cover portion removably mountable to the tray portion to provide a suitable EMF shield and weather seal. The cover portion includes an HVIL shorting plug. HV electrical energy is supplied from said ESS to the HV device only when all three of the HVIL components, i. e. , the HVIL SR pins, the HVIL jumper device, and the HVIL shorting plug, are electrically interconnected to form a closed HVIL circuit, while at the same time the HV cable is properly connected.

US Patent:

8606447, Dec 10, 2013

Filed:

May 23, 2011

Appl. No.:

13/113306

Inventors:

Chandra S. Namuduri - Troy MI, US
Suresh Gopalakrishnan - Farmington Hills MI, US
Keith D. Van Maanen - Birmingham MI, US
Bryan M. Ludwig - West Bloomfield MI, US
Bon Ho Bae - Torrance CA, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B60L 11/00
B60L 11/04

US Classification:

701 22

Abstract:

A powertrain system includes an electric motor/generator unit. Upon detecting an open high-voltage switch associated with a high-voltage DC electrical bus, low-voltage electrical power is employed to energize the high-voltage DC electrical bus, control parameters are adjusted to operate the electric motor/generator unit in a fault tolerant electric generation mode, an internal combustion engine is operated to spin the electric motor/generator unit, and the electric motor/generator unit is operated in the fault tolerant electric generation mode.

US Patent:

8042993, Oct 25, 2011

Filed:

Feb 12, 2008

Appl. No.:

12/029733

Inventors:

Keith D. Van Maanen - Birmingham MI, US

International Classification:

G01K 17/00
G01N 25/00

US Classification:

374 43, 374 29

Abstract:

A method for determining the thermal efficiency of a heat sink for an electrical component includes determining an estimated temperature of the heat sink, determining an actual temperature of the heat sink, and determining a thermal efficiency of the heat sink based on a comparison of the estimated temperature of the heat sink to the actual temperature of the heat sink. A related diagnostic system is provided.

US Patent:

20090186726, Jul 23, 2009

Filed:

May 1, 2008

Appl. No.:

12/113420

Inventors:

Keith D. Van Maanen - Birmingham MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - Detroit MI

International Classification:

F16H 7/08

US Classification:

474110

Abstract:

An accessory drive tensioning system for a belt coupled to an engine may include a first tensioner, a second tensioner, and a tensioner body. The first and second tensioners may be engaged with the belt. The tensioner body may have a first piston and a second piston that bias the first and second tensioners toward the belt.