Rogelio Rodriguez

US Patent:

6654678, Nov 25, 2003

Filed:

Mar 10, 2003

Appl. No.:

10/385046

Inventors:

Rogelio Rodriguez - Berwyn IL

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

G60T 712

US Classification:

701104, 12333923, 123352, 701110

Abstract:

An engine control system ( ) and method for improving stability of engine running speed when torque subtractions (TTS) from gross torque change while the engine ( ) is running at a constant speed, such as at low idle speed. Engine speed error data (Nerror) is processed according to one or more control functions ( ) each having gain determined by the torque subtraction data value via function generators ( ) to develop fueling adjustment data (P-FGT, I-FGT, D-FGT) for compensating desired engine fueling (MFDES) for the torque subtraction data (TTS).

US Patent:

6801846, Oct 5, 2004

Filed:

Oct 24, 2003

Appl. No.:

10/692948

Inventors:

Rogelio Rodriguez - Plainfield IL
Elias P. Soupos - Chicago IL
Priyankar S. Balekai - Oak Park IL

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02D 2300

US Classification:

701102, 60612

Abstract:

A control system ( ) for controlling the extent to which a valve ( ) selectively by-passes exhaust flow around one of two turbines ( T, T) in an engine exhaust system ( ). A desired set-point (TCBC_DES) and the actual set-point of operation of the valve are used to develop a set-point error for closed-loop control of the actual set-point. A data value for closed-loop gain is selected from a schedule ( ) based on engine speed and fueling. The selected data value of closed-loop gain and the set-point error data value are used to create a data value for a closed-loop output (TCBC_DTY_PIF) that is used to create a data value for a final output for forcing the actual set-point to the desired set-point.

US Patent:

6842676, Jan 11, 2005

Filed:

Mar 10, 2003

Appl. No.:

10/384964

Inventors:

Rogelio Rodriguez - Berwyn IL, US

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02D 4500

US Classification:

701 29, 701 30, 701 36, 702182, 702184

Abstract:

A method for servicing a motor vehicle () with an electronic service tool () that is placed in bi-directional data communication with an electrical system in the vehicle. With the vehicle's motor not running, but with electric power being applied to the vehicle's electrical system, tool () is updated by transmitting from the vehicle to the tool, set data containing a current set of vehicle-related parameters stored in the vehicle. With the motor running, the vehicle is serviced with the tool using the set data transmitted to update the tool.

US Patent:

6850832, Feb 1, 2005

Filed:

Oct 24, 2003

Appl. No.:

10/692866

Inventors:

Rogelio Rodriguez - Plainfield IL, US
Balmes Tejeda - Chicago IL, US

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02D 4114

US Classification:

701104, 123674

Abstract:

A schedule () correlates data values of closed-loop gain (KP, KI) with engine temperature values (EOT) and engine speed values (N). A control strategy develops a data value (ICPC_DES) representing desired injector control pressure (ICP) set-point, processes ICPC_DES and a data value (ICP_MPA) representing actual ICP to develop ICP error data value (ICP_ERR) for closed-loop P-I control () of actual ICP. Data values for closed-loop proportional and integral gains are obtained from the schedule based on measured engine temperature and measured engine speed. ICP become less subject to undesirable fluctuations that might otherwise change fuel injection quantity in ways detrimental to attainment of desired tailpipe emission objectives.

US Patent:

6947832, Sep 20, 2005

Filed:

Feb 10, 2004

Appl. No.:

10/775790

Inventors:

Rogelio Rodriguez - Plainfield IL, US

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02D041/22

US Classification:

701114, 700 79

Abstract:

Fault monitor () for error input (ICPCERR) to closed-loop control () of an engine function, such as a control pressure for a fuel system (). Error input is derived from the desired and actual data values for the function. An integration function integrates the absolute value of the input data value () during a time interval defined by a timing function () to provide an integrated data value. A comparison function () compares the integrated data value and a data value ICPCOBDERR defining a fault indication.

US Patent:

6973382, Dec 6, 2005

Filed:

Mar 25, 2004

Appl. No.:

10/809235

Inventors:

Rogelio Rodriguez - Plainfield IL, US
Adam C. Lack - Willow Springs IL, US

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02M025/07

US Classification:

701108, 12356821

Abstract:

Desired engine fueling data FQLMFDTQL is processed by a derivative variable time function () embodied in an algorithm to develop a data value EGRMFDDER representing the time derivative of desired fueling. The algorithm comprises certain selectable parameters (EGRDTS, EGRMFDKF, EGRMFDKD). An iteration of the algorithm includes processing FQLMFDTQL according to a first function (A) to yield a first data value and according to a second function (B) to yield a second data value. A third function (C) subtracts the second data value from the first to yield a data value for the time derivative that forms one input to a map (). A second input to the map is a data value for mass airflow (MAFGMS). The map provides data for calculating the set point of an EGR valve (). The invention provides improved control of EGR during fueling transients.

US Patent:

6973923, Dec 13, 2005

Filed:

Jul 20, 2004

Appl. No.:

10/894981

Inventors:

Rogelio Rodriguez - Plainfield IL, US
Balmes Tejeda - Chicago IL, US

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02M037/04

US Classification:

123502, 123446

Abstract:

An internal combustion engine fuel system applies injection control pressure to fuel injectors () to force fuel into combustion chambers (). A processor of a control system () develops data values for injection control pressure set-point (ICPCT13) representing desired injection control pressure and evaluates () the injection control pressure set-point data values for compliance with an allowable dynamic range defined by a data value for a minimum dynamic limit correlated with engine speed (N) from a function generator () and a data value for a maximum dynamic limit correlated with engine temperature (EOT) from a function generator (). The processor limits the data value of desired injection control pressure that is subsequently processed to control injection control pressure applied by the fuel system to the fuel injectors to the allowable dynamic range.

US Patent:

7188597, Mar 13, 2007

Filed:

Jun 7, 2005

Appl. No.:

11/147550

Inventors:

Rogelio Rodriguez - Plainfield IL, US
Adam C. Lack - Willow Springs IL, US

Assignee:

International Engine Intellectual Property Company, LLC - Warrenville IL

International Classification:

F02P 19/02

US Classification:

1231796, 123145 A

Abstract:

A motor vehicle engine () has a glow plug system () for aiding combustion of fuel in combustion chambers of the engine when the engine is cold and an ignition switch () is operated to crank the engine. A first circuit signals the cold start aid to commence operation of the cold start aid in anticipation of engine starting. A second circuit indicates a fault in the cold start aid. A third circuit, that includes a warning signal device (), activates the warning signal device to inform a driver of the vehicle of the indicated fault upon the first circuit having signaled the cold start aid to commence operation and the second circuit having indicated a fault in the cold start aid.