Andrew D Kieser

US Patent:

7377270, May 27, 2008

Filed:

Oct 23, 2006

Appl. No.:

11/584889

Inventors:

Kevin P. Duffy - Metamora IL, US
Andrew J. Kieser - Morton IL, US
Anthony Rodman - Chillicothe IL, US
Michael P. Liechty - Chillicothe IL, US
Carl-Anders Hergart - Peoria IL, US
William L. Hardy - Peoria IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02B 47/08
F02B 47/10

US Classification:

12356812, 12356811, 606052

Abstract:

A homogeneous charge compression ignition engine operates by injecting liquid fuel directly in a combustion chamber, and mixing the fuel with recirculated exhaust and fresh air through an auto ignition condition of the fuel. The engine includes at least one turbocharger for extracting energy from the engine exhaust and using that energy to boost intake pressure of recirculated exhaust gas and fresh air. Elevated proportions of exhaust gas recirculated to the engine are attained by throttling the fresh air inlet supply. These elevated exhaust gas recirculation rates allow the HCCI engine to be operated at higher speeds and loads rendering the HCCI engine a more viable alternative to a conventional diesel engine.

US Patent:

7380540, Jun 3, 2008

Filed:

Jan 29, 2007

Appl. No.:

11/699522

Inventors:

Kevin P. Duffy - Metamora IL, US
Parag Mehresh - Peoria IL, US
David Schuh - Peoria IL, US
Andrew J. Kieser - Morton IL, US
Carl-Anders Hergart - Peoria IL, US
William L. Hardy - Peoria IL, US
Anthony Rodman - Chillicothe IL, US
Michael P. Liechty - Chillicothe IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 7/00

US Classification:

123435, 123295, 123299, 701103

Abstract:

A homogenous charge compression ignition engine is operated by compressing a charge mixture of air, exhaust and fuel in a combustion chamber to an autoignition condition of the fuel. The engine may facilitate a transition from a first combination of speed and load to a second combination of speed and load by changing the charge mixture and compression ratio. This may be accomplished in a consecutive engine cycle by adjusting both a fuel injector control signal and a variable valve control signal away from a nominal variable valve control signal. Thereafter in one or more subsequent engine cycles, more sluggish adjustments are made to at least one of a geometric compression ratio control signal and an exhaust gas recirculation control signal to allow the variable valve control signal to be readjusted back toward its nominal variable valve control signal setting. By readjusting the variable valve control signal back toward its nominal setting, the engine will be ready for another transition to a new combination of engine speed and load.

US Patent:

7469181, Dec 23, 2008

Filed:

Jan 29, 2007

Appl. No.:

11/699523

Inventors:

Kevin P. Duffy - Metamora IL, US
Andrew J. Kieser - Morton IL, US
Michael P. Liechty - Chillicothe IL, US
William L. Hardy - Peoria IL, US
Anthony Rodman - Chillicothe IL, US
Carl-Anders Hergart - Peoria IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

G06F 19/00
F02M 25/07
F02B 47/08
F02B 75/04
F02B 33/44

US Classification:

701108, 123305, 123316, 12356814, 12356821, 701115, 606052

Abstract:

A homogeneous charge compression ignition engine is set up by first identifying combinations of compression ratio and exhaust gas percentages for each speed and load across the engines operating range. These identified ratios and exhaust gas percentages can then be converted into geometric compression ratio controller settings and exhaust gas recirculation rate controller settings that are mapped against speed and load, and made available to the electronic engine controller. This provides the engine controller with a look up table of what compression ratio and exhaust gas rates should be at each speed and load. The engine controller also balances at least one of combustion phasing and energy release among a plurality of cylinders in order to enable higher load operation.

US Patent:

7490462, Feb 17, 2009

Filed:

Feb 21, 2006

Appl. No.:

11/357160

Inventors:

Stephan Donald Roozenboom - Washington IL, US
Andrew John Kieser - Morton IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 25/06

US Classification:

60278, 60274, 60280, 60286, 60295, 606052, 60612, 123562

Abstract:

An exhaust recirculation system includes a power source including at least one cylinder outputting exhaust gas and a particulate reducing device fluidly connected to at least one exhaust duct of the power source. The particulate reducing device is configured to reduce an amount of particulates in the exhaust gas. The exhaust recirculation system also includes a recirculation compressor configured to receive and compress at least a portion of the exhaust gas. An intake duct of the at least one cylinder of the power source is fluidly connected to the recirculation compressor to receive the compressed reduced-particulate exhaust gas.

US Patent:

20080000228, Jan 3, 2008

Filed:

Jun 30, 2006

Appl. No.:

11/477519

Inventors:

Andrew J. Kieser - Morton IL, US

International Classification:

F01N 5/04
F01N 3/10
F02B 33/44

US Classification:

606051, 60612, 60302, 60280

Abstract:

An engine assembly may include an engine having a plurality of combustion cylinders, and an exhaust manifold configured to receive exhaust from the plurality of combustion cylinders. The exhaust manifold may be divided into first and second sections. The first section may be fluidly coupled to a first group of combustion cylinders, and the second section may be fluidly coupled to a second group of combustion cylinders. The engine assembly may also include a turbocharger having an exhaust turbine configured to receive exhaust from the first section. The engine assembly may further include a proportional valve assembly configured to selectively fluidly couple the second section to at least one of the turbocharger and an exhaust recirculation loop.

US Patent:

20080178843, Jul 31, 2008

Filed:

Jan 25, 2007

Appl. No.:

11/657940

Inventors:

Kevin P. Duffy - Metamora IL, US
Andrew J. Kieser - Morton IL, US
David Schuh - Peoria IL, US
Michael P. Liechty - Chillicothe IL, US
William L. Hardy - Peoria IL, US
Anthony Rodman - Chillicothe IL, US

International Classification:

F02D 41/04

US Classification:

123435, 123295

Abstract:

A multi cylinder homogeneous charge compression ignition engine includes actuators and an engine controller configured to reduce variations in combustion phasing and/or combustion energy release among the different engine cylinders. By sensing both the phasing and magnitude of the combustion energy release, the engine controller generates control signals to combustion phase controllers and combustion energy release controllers for the engine cylinders. The control signals may be different from one another to reduce variations across the group of engine cylinders. A combustion energy release controller may be a direct injection fuel injector, and the combustion phase controller may be a variable intake valve actuator. Reducing variations in these aspects of the combustion events, allows the engine to operate at higher speeds and loads.

US Patent:

6843231, Jan 18, 2005

Filed:

Dec 19, 2003

Appl. No.:

10/742544

Inventors:

Kevin P. Duffy - East Peoria IL, US
Andrew J. Kieser - Morton IL, US
Jonathan P. Kilkenny - Peoria IL, US

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F02M 700

US Classification:

123435

Abstract:

A method and apparatus for balancing a combustion phasing between a plurality of cylinders located in an engine. The method and apparatus includes a determining a combustion timing in each cylinder, establishing a baseline parameter for a desired combustion timing, and varying actuation of at least one of a plurality of intake valves, each intake valve being in fluid communication with a corresponding cylinder, such that the combustion timing in each cylinder is substantially equal to the desired combustion timing.

US Patent:

20200190769, Jun 18, 2020

Filed:

Dec 12, 2018

Appl. No.:

16/217387

Inventors:

- Deerfield IL, US
Andrew J. Kieser - Morton IL, US

Assignee:

Caterpillar Inc. - Deerfield IL

International Classification:

E02F 9/20
B66D 1/08

Abstract:

A system for controlling a winch assembly having a hydraulic motor, a drum, a cable, and a cable tension sensor. A controller is configured to access a winch load threshold defining a hold zone and a reel zone, and one of the hold zone and the reel zone including loads greater than the winch load threshold and another of the hold zone and the reel zone including loads less than the winch load threshold. The controller is further configured to determine whether the winch assembly is operating within the hold zone or the reel zone, and generate a zero flow command while the winch assembly is operating within the hold zone to prevent rotation of the hydraulic winch motor, and generate a pressure differential command while the rotatable winch drum is operating within the reel zone to permit rotation of the hydraulic winch motor.