Jeffrey P Kaiser

US Patent:

7870843, Jan 18, 2011

Filed:

Feb 24, 2009

Appl. No.:

12/391352

Inventors:

Layne K. Wiggins - Plymouth MI, US
Michael Livshiz - Ann Arbor MI, US
Jeffrey M. Kaiser - Highland MI, US
Henrik Nordin - Sundbyberg, SE

International Classification:

F04D 13/04
F02D 41/00

US Classification:

123321, 123698

Abstract:

An engine control system includes a scavenging module that generates a scavenging signal when both a driver torque request is greater than a predetermined torque threshold and a rotational speed of an engine crankshaft is less than a predetermined speed threshold. A cam phaser control module controls intake and exhaust cam phasers based on the scavenging signal such that opening times of intake and exhaust valves of a respective cylinder overlap.

US Patent:

8181627, May 22, 2012

Filed:

Feb 9, 2009

Appl. No.:

12/367886

Inventors:

Kevin T. Sharples - Pinkney MI, US
Mark H. Costin - Bloomfield Township MI, US
Timothy J. Hartrey - Brighton MI, US
Christopher E. Whitney - Highland MI, US
Bahram Younessi - Farmington MI, US
Weixin Yan - Novi MI, US
Jeffrey M. Kaiser - Highland MI, US
Richard B. Jess - Haslett MI, US
Joseph M. Stempnik - Warren MI, US
John A. Jacobs - Fenton MI, US
Jinchun Peng - Westland MI, US
Leonard G. Wozniak - Ann Arbor MI, US
Vivek Mehta - Bloomfield Hills MI, US
Bruce A. Rogers - Novi MI, US

International Classification:

F02D 41/00
B60K 31/00

US Classification:

123319, 123361, 180177

Abstract:

An engine system includes a throttle actuator module and a torque control module. The throttle actuator module controls a throttle actuator based on a desired throttle area. The torque control module determines an actuator torque. The torque control module determines a rate limited torque, a maximum torque, and a minimum torque based on the actuator torque and a predetermined rate of change. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is greater than the maximum torque. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is less than the minimum torque.

US Patent:

8364373, Jan 29, 2013

Filed:

Aug 30, 2010

Appl. No.:

12/870879

Inventors:

Christopher E. Whitney - Commerce MI, US
Jeffrey M. Kaiser - Highland MI, US
Dennis A. Light - Monroe MI, US
Anthony H. Heap - Ann Arbor MI, US
Honghao Tan - Ann Arbor MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

G06F 17/00

US Classification:

701 85, 701 22, 701 54, 701 84, 701102, 180 65285

Abstract:

A method of operating a hybrid powertrain having an internal combustion engine monitors a throttle intake pressure and calculates a first torque capacity from a pressure model using the throttle intake pressure as an input. The method determines a maximum expected air mass from the monitored throttle intake pressure and calculates a second torque capacity from an air mass model using the maximum expected air mass volume as an input. The method calculates a final torque capacity as a function of the first torque capacity and the second torque capacity, and sends the final torque capacity to the hybrid control processor. An engine control module receives a torque request calculated as a function of the final torque capacity. A manifold pressure request is calculated as a function of the torque request, and a throttle is actuated as a function of the manifold pressure request.

US Patent:

8473179, Jun 25, 2013

Filed:

Jul 28, 2010

Appl. No.:

12/845164

Inventors:

Christopher E. Whitney - Commerce MI, US
Andrew W. Baur - Flushing MI, US
Zhong Li - Novi MI, US
Jeffrey M. Kaiser - Highland MI, US

International Classification:

F02D 28/00
F02D 17/02
G06F 17/00

US Classification:

701102

Abstract:

An engine control system includes a desired manifold absolute pressure (MAP) module, a MAP to torque module, a threshold determination module, and a fuel economy (FE) mode module. The desired MAP module determines a desired MAP for operation of an engine in one of a cylinder deactivation mode and a low-lift mode based on a difference between a desired vacuum and an air pressure upstream of a throttle valve. The MAP to torque module determines a desired torque output of the engine for operation in the one of the cylinder deactivation mode and the low-lift mode based on the desired MAP. The threshold determination module determines an entry torque based on the desired torque output. The FE mode module selectively triggers operation in the one of the cylinder deactivation mode and the low-lift mode based on a comparison of the entry torque and a torque request.

US Patent:

8483935, Jul 9, 2013

Filed:

Sep 9, 2010

Appl. No.:

12/878380

Inventors:

Christopher E. Whitney - Commerce MI, US
William R. Cawthorne - Milford MI, US
Anthony H. Heap - Ann Arbor MI, US
Jeffrey M. Kaiser - Highland MI, US
Dennis A. Light - Monroe MI, US
Jon C. Wasberg - Davison MI, US
Weixin Yan - Novi MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

F02D 28/00
B60W 20/00
G06F 17/00

US Classification:

701103, 701 85, 180 65285

Abstract:

A method for selectively creating vacuum in a hybrid powertrain controlled by a hybrid control processor and having an engine controlled by an engine control module includes requesting a pressure differential between a first intake point and a second intake point, wherein the first intake point and the second intake point are separated by a throttle. An actual torque capacity is calculated for the engine, wherein the actual torque capacity occurs when pressure is substantially equal at the first intake point and at the second intake point. A desired torque capacity is also calculated for the engine, wherein the desired torque capacity reduces the pressure at the second intake point relative to the pressure at the first intake point, such that the requested pressure differential is created. The engine is then operated at one of the desired torque capacity and the actual torque capacity.

US Patent:

8538659, Sep 17, 2013

Filed:

Oct 8, 2009

Appl. No.:

12/575729

Inventors:

Wenbo Wang - Novi MI, US
Layne K. Wiggins - Plymouth MI, US
Jeffrey M. Kaiser - Highland MI, US
Chao F Daniels - Superior Township MI, US

International Classification:

G06F 19/00
G06F 7/00
G06F 17/00
G06G 7/70
F02D 41/00

US Classification:

701101, 701102, 701103, 701104, 701109, 123673, 123674, 123681, 123683, 123687

Abstract:

A control system and method of controlling operation of an internal combustion engine includes a load determination module that determines an engine load, an equivalence ratio module that determines an equivalence ratio, a correction factor module that generates a correction factor based on the engine load, the equivalence ratio, and the engine speed and an engine operation module that regulates operation of the engine based on the correction factor.

US Patent:

8555857, Oct 15, 2013

Filed:

Nov 16, 2010

Appl. No.:

12/947103

Inventors:

Xiaofeng Yang - Troy MI, US
Wenbo Wang - Novi MI, US
Tang-Wei Kuo - Troy MI, US
Jeffrey M. Kaiser - Highland MI, US
Chao F. Daniels - Superior Township MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

F02P 5/00

US Classification:

12340626

Abstract:

A method for operating a spark-ignition internal combustion engine includes controlling spark ignition timing responsive to a combustion charge flame speed corresponding to an engine operating point and a commanded air/fuel ratio associated with an operator torque request.

US Patent:

20120180759, Jul 19, 2012

Filed:

Feb 15, 2011

Appl. No.:

13/027376

Inventors:

Christopher E. Whitney - Commerce MI, US
Jeffrey M. Kaiser - Highland MI, US
Per Andersson - Lidkoping, SE
Timothy L. Gibbs - Bloomfield Hills MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

F02P 5/04

US Classification:

12340623

Abstract:

A method includes: retarding spark timing relative to a predetermined spark timing when an engine torque output reduction is requested for a gear shift; estimating a first torque output of an engine based on N cylinders of the engine being fueled, an engine speed, an air per cylinder (APC), and the predetermined spark timing; estimating a second torque output of the engine based on M cylinders being fueled, the engine speed, the APC, and the spark timing. determining an initial pressure ratio across a turbocharger compressor; determining an adjustment based on M and the first and second torque outputs; generating a desired pressure ratio across the turbocharger compressor based on the adjustment and the initial pressure ratio; and controlling opening of a turbocharger wastegate based on the desired pressure ratio. N is a total number of cylinders of the engine and M is less than or equal to N.