Jessy W Grizzle

6336071, Jan 1, 2002

Apr 2, 2001

09/824409

Jessy W. Grizzle - Ann Arbor MI
Jing Sun - Bloomfield MI

Ford Global Technologies, Inc. - Dearborn MI

G06F 1900

701115, 123481

A method for controlling mode transitions, such as from stratified to homogeneous mode, in a direct injection engine adjusts a number of cylinders carrying out combustion to prevent engine torque disturbances. Cylinder activation is used when changes in cylinder air/fuel ratio cannot be compensated using ignition timing adjustments. In addition, the number of cylinders to activate is also determined and measures are taken if the number of cylinders determined are not available to be activated.

6349700, Feb 26, 2002

Aug 11, 2000

09/637950

Julia Helen Buckland - Dearborn MI
Jessy W. Grizzle - Ann Arbor MI

Ford Global Technologies, Inc. - Dearborn MI

F02D 4100

123352, 12333919

A system and method for engine/speed control of a direct injection spark ignition engine include operating the engine in a stratified charge mode and controlling speed based on engine set points for best performance using fuel as a primary torque actuator and airflow as a secondary torque actuator whenever possible to maintain spark at or near MBT. When current operating conditions and/or system constraints prevent use of engine set points corresponding to best performance, speed control becomes the primary objective. Systems and methods according to the present invention improve the compromise between speed control and best performance set-point objectives.

6378484, Apr 30, 2002

May 15, 2000

09/571063

John D. Russell - Farmington Hills MI
Ilya Vladimir Kolmanovsky - Ypsilanti MI
Jessy W. Grizzle - Ann Arbor MI
Jing Sun - Bloomfield Township MI

Ford Global Technologies, Inc. - Dearborn MI

F02B 1700

123295, 123305, 123 9015

A system and method for controlling a direct injection stratified charge engine during transitions between homogeneous and stratified operating modes position the throttle to a position corresponding to the desired operating mode to begin the transition and use valve timing control to provide a rapid change in air flow to traverse the gap between acceptable air/fuel ratios associated with the homogeneous and stratified modes. The invention reduces torque variations while improving engine performance by coordinating control of an electronic throttle and valve timing to reduce or eliminate step changes in fuel previously required to traverse the air/fuel ratio gap between modes. Primary reliance on air flow and fuel flow to reduce torque variations and improve driveability reduces reliance on spark timing and associated performance penalties.

6393832, May 28, 2002

Mar 15, 2000

09/525803

Iiya Vladimir Kolmanovsky - Ypsilanti MI
Jessy W. Grizzle - Ann Arbor MI
Jing Sun - Bloomfield MI

Ford Global Technologies, Inc. - Dearborn MI

F04N 300

60286, 60274, 60284, 60285, 60300, 60301

A fuel injection method and strategy for an internal combustion engine wherein the fuel injection event that occurs during each combustion cycle of a four-cycle internal combustion engine. A first fuel injection event may occur during the intake stroke of the combustion cycle, thereby creating a lean homogeneous air/fuel mixture. A second fuel injection event may occur during the compression stroke. The combustion gases created in the combustion chamber of the engine are transferred to an exhaust system during the exhaust stroke. The injected fuel mixes with the air present in the combustion chamber to create a lean air/fuel mixture. The valve timing for the engine is deliberately adjusted to a setting that is less than the maximum torque setting where hydrocarbon production occurs during the combustion event. The exhaust gas hydrocarbon content for any given ignition spark timing increases as the injection timing before top dead center is increased.

6411885, Jun 25, 2002

Sep 13, 2001

09/951278

Jessy W. Grizzle - Ann Arbor MI
Jing Sun - Bloomfield MI

Ford Global Technologies, Inc. - Dearborn MI

B60T 712

701104, 123305, 701105

A computer readable storage medium having stored data representing instructions for controlling a spark ignited direct injection internal combustion engine having a plurality of cylinders operable in at least homogeneous and stratified modes, includes instructions for determining a desired value for an engine operating parameter based on current engine operating conditions wherein the desired value results in scheduling of an air/fuel ratio between homogeneous range and stratified range of allowable air/fuel ratios, instructions for operating a first portion of the cylinders in the homogenous operating mode, and instructions for operating a second portion of the cylinders in the stratified operating mode such that a combined air/fuel ratio associated with the first and second portions of the cylinders approaches the scheduled air/fuel ratio.

6840036, Jan 11, 2005

Aug 30, 2002

10/231850

Giovanni Fiengo - Ercolano, IT
Jeffrey Arthur Cook - Dearborn MI, US
Jessy W. Grizzle - Ann Arbor MI, US

Ford Global Technologies, LLC - Dearborn MI

F01N 300

60285, 60274, 60276, 123103, 123109

A system and method for controlling an engine to regulate the oxygen storage level in an emission control device are provided. The system includes oxygen sensors disposed in an exhaust gas stream of the engine upstream and downstream of the emission control device. The oxygen sensors generate a feedgas and tailpipe air fuel signals. The system includes an electronic control unit (ECU) configured to obtain an adjusted feedgas air fuel ratio responsive to the feedgas and tailpipe air fuel signals to correct bias in the feedgas air fuel signal. The (ECU) is further configured to obtain an estimate of an oxygen storage level in the emission control device responsive to the adjusted feedgas air fuel ratio and the tailpipe air fuel signal. Finally, the (ECU) is configured to generate a control signal for the engine responsive to the adjusted feedgas air fuel ratio and the oxygen storage level estimate.

7197866, Apr 3, 2007

Nov 10, 2003

10/705436

Jeffrey A. Cook - Dearborn MI, US
Richard E. Soltis - Saline MI, US
Alex D. Colvin - Oak Park MI, US
Jessy Grizzle - Ann Arbor MI, US

Ford Global Technologies, LLC - Dearborn MI

F01N 3/00

60285, 60274, 60276, 73 2332, 731181, 204424

Electronic circuitry and control algorithms are described to automatically establish the output voltage of a linear exhaust gas oxygen sensor (e. g. , a UEGO sensor) corresponding to an exhaust air-fuel ratio of stoichiometry. The apparatus and control logic herein described may be used to adaptively correct the setpoint of an air-fuel ratio control system in which a UEGO sensor is used in a feedback loop to adjust the fuel injection quantity of an internal combustion engine.

20040060660, Apr 1, 2004

Sep 25, 2003

10/672475

Pete Klimecky - Portland OR, US
Fred Terry - Ann Arbor MI, US
Jessy Grizzle - Ann Arbor MI, US
Craig Garvin - Arlington MA, US

Lam Research Inc., a Delaware Corporation

H01L021/306

156/345280, 156/345440

A plasma processing system has a chamber, a workpiece holder in an interior of the chamber, a first power circuit, a second power circuit, and a feedback circuit. The first power circuit has a first power supply coupled to a first matching network. The first matching network is coupled to a coil adjacent to the chamber. The second power circuit has a second power supply coupled to a second matching network. The second matching network is coupled to the workpiece holder. The feedback circuit includes a radio frequency (RF) probe and a controller. The RF probe is partially disposed in an interior of the chamber. The controller is coupled to the RF probe and the first power circuit. The RF probe measures a change in plasma density in the interior of the chamber and the controller adjusts the first power supply in response to the change in plasma density.