Thomas Robert Sandborg from 5826 W Charleston Ct, Peoria, IL 61607, age 62

Method For Determining A Condition Of An Exhaust Gas Recirculation (Egr) System For An Internal Combustion Engine
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US Patent:

6446498, Sep 10, 2002
Filed:

Jun 30, 1999
Appl. No.:

09/343915
Inventors:

David R. Schricker - Dunlap IL
Thomas R. Sandborg - Mapleton IL
Steven R. McCoy - Washington IL
Assignee:

Caterpillar Inc. - Peoria IL
International Classification:

G01M 1500
US Classification:

731181
Abstract:

A method for determining a condition of an exhaust gas recirculation (EGR) system for an internal combustion engine. The method includes the steps of setting an EGR valve located on the EGR system to a first position, determining a first temperature value at a location on the EGR system, setting the EGR valve to a second position, determining a second temperature value at the location, and determining a condition of the EGR system as a function of the difference between the first and second temperature values.

Maintenance Monitor System
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US Patent:

56422849, Jun 24, 1997
Filed:

Aug 12, 1994
Appl. No.:

8/289592
Inventors:

Prasad V. Parupalli - Peoria IL
David L. Dickrell - Chillicothe IL
Gregory S. Gauger - Pekin IL
Robert W. Keene - Peoria IL
Ronald J. Mearek - Peoria IL
Richard D. Rathe - Peoria IL
Brian T. Rolli - Peoria IL
Thomas R. Sandborg - Mapleton IL
Greg A. Schumacher - Washington IL
Scott G. Sinn - Morton IL
Michael R. Verheyen - Dunlap IL
Assignee:

Caterpillar Inc. - Peoria IL
International Classification:

G06F 1740
G01D 116
F01M 1110
US Classification:

364424035
Abstract:

The system is provided for controllably monitoring data associated with operational characteristics of an engine. The system determines a maintenance activity requirement based on such characteristics. The system includes a plurality of transducers associated with the engine and connected to a programmable logic device. Signals from the transducers are continuously monitored and stored in an associated storage device. In response to predetermined sets of operational characteristics, an indication of when maintenance is due on the engine is produced by the logic device.

Apparatus And Method For Disabling A Compression Brake System
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US Patent:

57332193, Mar 31, 1998
Filed:

May 13, 1996
Appl. No.:

8/648525
Inventors:

Mark E. Rettig - Peoria IL
Thomas R. Sandborg - Mapleton IL
Assignee:

Caterpillar Inc. - Peoria IL
International Classification:

B60K 4128
US Classification:

477 91
Abstract:

An apparatus is provided for controlling a compression brake on an internal combustion engine. the apparatus includes means for automatically disabling the compression brake once the vehicle speed falls below a predetermined value.

Engine Speed Control And Method For Operating Same
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US Patent:

56117515, Mar 18, 1997
Filed:

Sep 26, 1995
Appl. No.:

8/533974
Inventors:

Kevin D. Ehrenhardt - Eureka IL
Gregory S. Gauger - Pekin IL
Prasad V. Parupalli - Peoria IL
Thomas R. Sandborg - Mapleton IL
Assignee:

Caterpillar Inc. - Peoria IL
International Classification:

B60K 4102
B60K 4104
F16H 3700
US Classification:

477 73
Abstract:

A preferred embodiment of the present invention includes a power take off ("PTO") controller used on a vehicle. The controller includes a PTO on/off switch, a brake/clutch ignore switch, and a PTO set/resume switch connected to an electronic controller. The controller sets the engine speed command to a PTO default speed in response to the PTO on/off switch being in an on position. By placing the brake/clutch ignore switch in an ignore position, the vehicle operator can use the brake or clutch without affecting the PTO engine speed.

Fuel Delivery Temperature Compensation System And Method Of Operating Same
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US Patent:

54446279, Aug 22, 1995
Filed:

Oct 6, 1993
Appl. No.:

8/133531
Inventors:

Thomas R. Sandborg - Washington IL
Prasad V. Parupalli - Peoria IL
Scott G. Sinn - Morton IL
Assignee:

Caterpiller Inc. - Peoria IL
International Classification:

F23N 500
US Classification:

36443105
Abstract:

An engine control is provided for compensating the fuel delivery to an internal combustion engine as a function of the energy content of the fuel. The engine control includes a fuel temperature sensor connected to an electronic controller. A memory device including a standard fuel delivery map stored therein is connected to the electronic controller. The electronic controller calculates a compensated fuel delivery map as a function of the standard fuel delivery map and the fuel temperature, and the controller issues a fuel delivery command based on the compensated fuel delivery map.

Programmable Engine Parameter Verification Apparatus And Method Of Operating Same
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US Patent:

58842101, Mar 16, 1999
Filed:

Aug 27, 1996
Appl. No.:

8/703590
Inventors:

Mark E. Rettig - Peoria IL
Thomas R. Sandborg - Mapleton IL
Assignee:

Caterpillar Inc. - Peoria IL
International Classification:

G06F 1900
B60T 718
US Classification:

701115
Abstract:

A programmable electronic engine controller includes customer programmable engine and vehicle operating parameters. A communications device is connectable to said engine controller. Stored in the communications device are a predetermined set of parameters. The communications device downloads the engine and vehicle operating parameters that are present in the engine controller, compares those values to corresponding predetermined parameters, and prints an exception report based on that comparison.

Apparatus And Metod For Producing Vehicle Operating Snapshot In Response To Acceleration Change
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US Patent:

57549648, May 19, 1998
Filed:

May 15, 1996
Appl. No.:

8/648460
Inventors:

Mark E. Rettig - Peoria IL
Thomas R. Sandborg - Mapleton IL
Assignee:

Caterpillar Inc. - Peoria IL
International Classification:

B60Q 100
G01M 1500
US Classification:

701 35
Abstract:

An apparatus and method are provided for storing various vehicle operating characteristics upon sensing a vehicle acceleration having a magnitude that exceeds a predetermined limit. In this manner, the vehicle owner or fleet manager can determine whether the vehicle operator uses the service brakes excessively.

Data Recording And Display System
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US Patent:

58571590, Jan 5, 1999
Filed:

Aug 12, 1994
Appl. No.:

8/289593
Inventors:

David L. Dickrell - Chillicothe IL
Gregory S. Gauger - Pekin IL
Robert W. Keene - Peoria IL
Ronald J. Mearek - Peoria IL
Richard D. Rathe - Peoria IL
Brian T. Rolli - Peoria IL
Thomas R. Sandborg - Mapleton IL
Greg A. Schumacher - Washington IL
Scott G. Sinn - Morton IL
Michael R. Verheyen - Dunlap IL
Assignee:

Caterpillar Inc. - Peroria IL
International Classification:

G06F 700
G06F 1900
US Classification:

701 35
Abstract:

A system is disclosed for sensing, recording, and selectively displaying data associated with operational characteristics of a vehicle and associated engine. The system includes a plurality of transducers delivering signals corresponding to such operational characteristics to a programmable logic device. These signals are converted to appropriate information signals which are stored in an associated storage device and can be selectively displayed on a suitable display device.