THOMAS ALAN DOLLMEYER
Pilots at Baker Holw Rd, Columbus, IN

6725847, Apr 27, 2004

Apr 10, 2002

10/120051

George Brunemann - Cincinnati OH
Larry J. Brackney - Columbus IN
Thomas A. Dollmeyer - Columbus IN
B. Jerry Song - Columbus IN
Michael G. Barbieri - Columbus IN
Matthew M. Lipinski - Elizabeth Town IN
Wayne Eberhard - Columbus IN

Cummins, Inc. - Columbus IN

F02M 2507

12356812, 123677, 606052

A system for protecting an internal combustion engine employing cooled recirculated exhaust gas (EGR) from excessive condensation includes an auxiliary emission control device (AECD) operable to determine when engine operating conditions correspond to a condensing condition resulting in condensation of water at the outlet of the EGR cooler and/or within the intake manifold or intake conduit of the engine. When such conditions occur, the AECD is operable to close the EGR valve and monitor engine operating conditions. When engine operating conditions no longer correspond to the condensing condition, control of the EGR valve is restored to an air handling system associated with the engine.

6718251, Apr 6, 2004

Jan 29, 2002

10/059505

Larry J. Brackney - Columbus IN
Thomas A. Dollmeyer - Columbus IN
George A. Brunemann - Cincinnati OH

Cummins, Inc. - Columbus IN

B60T 712

701103, 701110, 701115, 123321

A system for controlling exhaust emissions produced by an internal combustion engine includes an engine controller having an emission manager configured to produce a base emission level cap command, corresponding to a maximum allowable emission level of the engine, as a function of at least altitude and ambient temperature. The emission manager may also include one or more auxiliary emission control devices (AECDs), and the emission manager is further operable in such cases to determine a maximum allowable emission level associated with each active AECD. A final emission level cap command is determined as a function of the base emission level cap command and the maximum allowable emission level associated with each active AECD. The emission manager is further operable to produce a protection state data structure that includes information relating to the operational status of each AECD.

6408834, Jun 25, 2002

Jan 31, 2001

09/773654

Lary J. Brackney - Columbus IN
Thomas A. Dollmeyer - Columbus IN
Paul R. Miller - Columbus IN
Chuan He - Columbus IN

Cummins, Inc. - Columbus IN

F02M 2507

12356821, 60602, 606052

A system for decoupling EGR flow and turbocharger swallowing capacity/efficiency control mechanisms includes a multiple-input multiple-output (MIMO) transform manager coupled to one or more of an EGR valve, an exhaust throttle and a variable geometry turbocharger (VGT) actuator of an internal combustion engine. The MIMO transform manager is responsive to commanded charge flow and EGR fraction parameters to decouple the EGR/exhaust throttle and VGT control parameters such that these control mechanisms may be controlled individually and independently of each other. One transform output is provided to a first compensator for controlling EGR flow and/or exhaust throttle operation as a function of charge flow error. The other transform output is provided to a second independent compensator for controlling VGT operation also as a function of charge flow error. Both compensators are configured to provide for transient compensator gain adjustment based on the degree of charge flow error, and the VGT compensator is further configured to provide for transient compensator gain adjustment based on a ratio of commanded fueling and oxygen/fuel ratio.

6480782, Nov 12, 2002

Jan 31, 2001

09/773151

Larry J. Brackney - Columbus IN
Thomas A. Dollmeyer - Columbus IN
George Brunemann - Cincinnati OH

Cummins, Inc. - Columbus IN

F02M 2507

701108, 12356821, 60600, 60602, 606052

A charge limit manager arbitrates between desired EGR system and/or turbocharger behavior and the actual capabilities of EGR system and/or turbocharger control mechanisms under current operating conditions. In one embodiment, the charge limit manager includes three limiter blocks producing offset signals as separate functions of turbocharger compressor outlet temperature, turbocharger speed and pressure differential (P) across an EGR valve. A charge limit selector block is responsive to the offset values produced thereby, and also to commanded values of charge flow and EGR fraction as well as operating values of EGR valve position and P, to limit the charge flow and EGR fraction commands to controllable values. These values are preferably subtracted from actual or estimated values of charge flow and EGR fraction to produce charge flow and EGR fraction error values for use in controlling one or more EGR system and/or turbocharger swallowing capacity/efficiency control mechanisms.

8322129, Dec 4, 2012

Feb 16, 2006

11/356363

Thomas A. Dollmeyer - Columbus IN, US
Jennifer W. Rumsey - Greenwood IN, US
Larry J. Brackney - Columbus IN, US
B. Jerry Song - Columbus IN, US
J. Steve Wills - Columbus IN, US
John N. Chi - Columbus IN, US
John M. Mulloy - Columbus IN, US

Cummins, Inc. - Columbus IN

F01N 5/04

60280, 60274, 60285, 606051, 60608, 60611

A method and system for controlling an exhaust temperature for an internal combustion engine is disclosed. The method and system include determining a range of acceptable charge flows within the internal combustion engine to meet a desired exhaust temperature. The method and system further include controlling the charge flows to fall within the range. Control strategies to utilize the charge flow as a lever to control turbine outlet temperature are disclosed. These strategies utilize the inversion of the cylinder outlet temperature virtual sensor as well as a new turbine outlet temperature virtual sensor to determine the charge flow required to achieve the desired turbine outlet temperature given the current turbine inlet and outlet pressure, SOI, charge pressure, charge temperature, fueling, and engine speed.

7484357, Feb 3, 2009

Sep 15, 2005

11/227060

Thomas A. Dollmeyer - Columbus IN, US
Patrick J. Shook - Franklin IN, US
J. Steve Wills - Columbus IN, US
Joan Wills - Nashville IN, US

Cummins, Inc - Columbus IN

F01N 3/00

60274, 60277, 60285, 60295, 60297, 714 1, 714E1102, 702 81, 702 84, 702179, 702180

An apparatus, system, and method are disclosed for determining the reliability of an estimate such as particulate accumulation on a diesel particulate filter, weighing the estimate according to a function of its reliability, weighing a prediction of particulate accumulation on the filter according to a function of the estimate's reliability, and combining the weighted estimate and weighted prediction to determine a combined particulate load estimate. The degree of reliability can be expressed as a trust factor, and a function of the trust factor can be used in a low-pass filter of the estimate. The trust factor value depends on filter air flow and particulate distribution in one embodiment. Regeneration of the particulate filter may be initiated depending on the value of the combined particulate load estimate.

7231291, Jun 12, 2007

Sep 15, 2005

11/227320

Thomas A. Dollmeyer - Columbus IN, US
Patrick J. Shook - Franklin IN, US
J. Steve Wills - Columbus IN, US
Joan Wills - Nashville IN, US

Cummins, Inc. - Columbus IN

G06F 19/00

701114, 731181

An apparatus, system, and method are disclosed for providing system feedback from combined input values in a sensor-based control system wherein the reliability of a sensor response is questionable under defined conditions. The apparatus, in one embodiment, is configured to determine an output value. The apparatus may include an input module for receiving input from a sensor configured to provide a sensor response, an estimated expected response value, and a control module for determining an output value based on input from the sensor response and from the expected response value. To determine an output value, the sensor response and the expected response value may be weighted according to a predicted reliability of the sensor response or the model. The system may be embodied in an exhaust gas after-treatment system.

2012015, Jun 21, 2012

Dec 20, 2010

12/972653

Martin T. Books - Columbus IN, US
Thomas Dollmeyer - Columbus IN, US
Jean Patrick Rich - Georgetown IN, US

B60W 20/00, B60W 10/06, B60W 10/08, G06F 19/00

701 22, 701 99, 180 65265, 903930

A system includes a hybrid power train having an internal combustion engine and an electrical torque provider that combine to provide a total machine torque. The system includes a controller that functionally executes operations to control the hybrid power train. The controller interprets a total machine torque target value and determines a torque contribution for each of the internal combustion engine and the electrical torque provider in response. The controller interprets a supplemental torque contribution value, and controls the internal combustion engine and the electrical torque provider in response to the torque contributions and the supplemental torque contribution value. The supplemental torque contribution value is applied as a limiting value, a target value, or a prescribed ratio for one or both of the torque contributions.

2007018, Aug 16, 2007

Feb 16, 2006

11/356346

Thomas Dollmeyer - Columbus IN, US
Jennifer Rumsey - Greenwood IN, US
Larry Brackney - Columbus IN, US
Leon Lapointe - Columbus IN, US

F01N 3/00

060285000

A method and system for controlling an exhaust temperature for an internal combustion engine at idle and light load conditions is disclosed. The method and system comprise determining a desired range of fuel consumption within the internal combustion engine to meet a desired exhaust temperature. The method and system further comprise controlling the fuel consumption to fall within the range. Control strategies to elevate exhaust temperature at idle or light load conditions are disclosed. These strategies allow for exhaust temperatures for aftertreatment regeneration to be reached.

7069171, Jun 27, 2006

Jul 9, 2003

10/616262

Yue Yun Wang - Columbus IN, US
Charles Wu - Indianapolis IN, US
Thomas A. Dollmeyer - Columbus IN, US

Cummins, Inc. - Columbus IN

G06F 15/00

702145, 702142

A turbocharger speed controller includes a rising rate limiter having an input receiving a turbocharger speed signal and an output producing a rate limited turbocharger speed signal, a high envelope filter having an input receiving the rate limited turbocharger speed signal and an output producing a filtered and rate limited turbocharger speed signal, a turbocharger speed control signal generator having an input receiving the filtered and rate limited turbocharger speed signal and an output producing a turbocharger speed control signal based on comparison of the filtered and rate limited turbocharger speed signal with a desired turbocharger speed, and a swallowing capacity control mechanism responsive to the turbocharger speed control signal to vary a swallowing capacity of the turbocharger.