Jie Tong, Age 62Walnut, CA

6886511, May 3, 2005

Apr 7, 2004

10/819401

Jie Tong - Sterling Heights MI, US
Burak A. Gecim - Rochester Hills MI, US

General Motors Corporation - Detroit MI

F01L001/34

123 9016, 123 9012, 123 9015, 123198 F, 251 14, 251 3001, 251 62

A lost motion assembly for a valve of an internal combustion engine includes a cam, a cam piston which is spring biased to follow motion of the cam, a valve piston operatively engaged with a poppet valve, and an auxiliary piston. The cam piston, valve piston and auxiliary piston are in continuous contact with a fluid in an enclosed control chamber having a fixed volume, such that rotation of the cam causes displacement of the cam piston into the control chamber, which causes a corresponding displacement of at least one of the valve piston and auxiliary piston while the volume of fluid in the control chamber remains substantially constant.

6918360, Jul 19, 2005

Apr 2, 2003

10/405965

Zongxuan Sun - Troy MI, US
Norman Kenneth Bucknor - Troy MI, US
Jie Tong - Warren MI, US

General Motors Corporation - Detroit MI

F01L009/02

123 9012, 123 9015

A valve actuator assembly for an engine includes a movable engine valve and a movable spool valve. The valve actuator assembly also includes a driving channel interconnecting the spool valve and the engine valve and a feedback channel interconnecting the spool valve and the engine valve. The valve actuator assembly includes an actuator operatively cooperating with the spool valve to position the spool valve to prevent and allow fluid flow in and out of the driving channel to position the engine valve. The valve actuator assembly further includes an on/off valve in fluid communication with the feedback channel to enable and disable the feedback channel to control motion of the spool valve.

7007649, Mar 7, 2006

Feb 3, 2004

10/771279

Madhusudan Raghavan - West Bloomfield MI, US
Jie Tong - Sterling Heights MI, US

General Motors Corporation - Detroit MI

F01L 1/18

123 9039, 123 9016, 123 9044

A valve actuator assembly for an engine includes a movable engine valve. The valve actuator assembly also includes a movable roller finger follower operatively engaged with the engine valve, a rotatable cam, and an intermediate finger follower operatively engaged with the roller finger follower and the cam. The valve actuator assembly also includes at least one actuator operatively cooperating with the intermediate finger follower to position the intermediate finger follower in two directions relative to the cam to move the roller finger follower to position the engine valve at a desired lift and phasing.

7240485, Jul 10, 2007

Apr 1, 2005

11/096696

Chandra S. Namuduri - Troy MI, US
Balarama V. Murty - West Bloomfield MI, US
Jie Tong - Sterling Heights MI, US

GM Global Technology Operations, Inc. - Detroit MI

F16D 37/02

60326, 60435

A power steering system for a vehicle includes a hydraulic pump connected to a power steering gear of the vehicle and a fluid coupling interconnecting a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an electronic controller operable to provide a variable control signal based on received input and an amplifier to receive the variable control signal and energize the fluid coupling in response thereto to vary torque transmitted via the fluid coupling.

7334670, Feb 26, 2008

Apr 22, 2005

11/112445

Chandra S. Namuduri - Troy MI, US
Balarama V. Murty - West Bloomfield MI, US
Anthony L. Smith - Troy MI, US
Jie Tong - Sterling Heights MI, US
Mark A. Golden - Washington MI, US
John C. Ulicny - Oxford MI, US

GM Global Technology Operations, Inc. - Detroit MI

F16D 27/00

192 215

A magnetorheological (MR) fluid coupling for vectoring torque with respect to a shaft capable of rotary motion is disclosed. The coupling includes a stator, a rotor having a rotational degree of freedom with respect to the stator and configured for physical communication with the shaft, and a magnetic field generator. The stator and rotor define an annular space therebetween and are coupled via a MR fluid disposed within the annular space. The magnetic field generator is in field communication with the MR fluid and is disposed to produce a substantially radially directed magnetic field across the annular space. The rotor is rotationally responsive to the application of a magnetic field at the MR fluid.

8148670, Apr 3, 2012

Aug 26, 2008

12/198594

Jie Tong - Diamond Bar CA, US
Sean Whitmarsh - Castaic CA, US

Woodward HRT, Inc. - Santa Clarita CA

F42B 15/01

244 327, 244 324, 403 84, 403 91

One embodiment is directed to a locking mechanism. The locking mechanism has a housing and a rotary actuator carried by the housing. The rotary actuator includes a shaft and armature disposed around at least a portion of the shaft. The armature is configured to rotate the shaft about a longitudinal axis of the shaft. The locking mechanism also has a cam carried by the shaft and a set of locking balls disposed between the cam and the housing. The locking mechanism has a locking assembly carried by the housing, the locking assembly being axially positionable between a locked position relative to the housing and a released position relative to the housing.

2006025, Nov 16, 2006

Oct 7, 2005

11/246029

Balarama Murty - West Bloomfield MI, US
Chandra Namuduri - Troy MI, US
Jie Tong - Rowland Heights CA, US
Kenneth Shoemaker - Highland MI, US

F16D 27/00

192021500

A magneto-rheological coupling (MRC) is provided having an input assembly operable to receive a torque input and an output member operable to selectively transmit torque to a driveshaft. A magneto-rheological fluid, or MRF, having a variable viscosity in response to a magnetic flux field is operable to vary the torque transmitted from the input assembly to the output member. At least one annular lip forming a magneto-rheological fluid retention pocket is provided on at least one of the input assembly and the output member of the MRC. The annular lip is operable to direct MRF away from a roller bearing, thereby reducing the likelihood of MRF fluid incursion within the roller bearing. Additionally, a labyrinth seal may be employed to provide additional protection to the bearing. The labyrinth seal may have an annular bushing disposed therein to reduce the clearances of the labyrinth seal.

6360705, Mar 26, 2002

Oct 19, 2000

09/692379

Madhusudan Raghavan - West Bloomfield MI
Jie Tong - Troy MI

General Motors Corporation - Detroit MI

F01L 134

123 9016, 123 9039, 123 9041, 123 9044

A valve lift mechanism for an internal combustion engine is disposed on the engine cylinder head. The valve lift mechanism has a rocker arm pivotally mounted on the stem of an engine intake valve that is slidably mounted in the cylinder head of the engine. The inlet valve is reciprocated by rocking motion of the rocker arm to control the opening and closing of an inlet passage in the cylinder to thereby control the incoming air/fuel mixture. A contact roller is mounted adjacent one end of the rocker arm on one side of the pivotal mount and a contact surface is formed along the rocker arm on the opposite side of the pivotal mount. A positioning mechanism including a roller is operable to selectively position a contact point between the roller and the contact surface to establish a rocking point for the rocker arm between a maximum lift position for the inlet valve and a minimum lift position of the inlet valve.