Jason J Rasmussen

US Patent:

6705278, Mar 16, 2004

Filed:

Jun 26, 2001

Appl. No.:

09/888581

Inventors:

Brian G. McGee - Chillicothe IL
Matthew R. Roth - Metamora IL
Jason J. Rasmussen - Edwards IL

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F02B 300

US Classification:

123299, 123300

Abstract:

An apparatus and method transitions fuel delivery between a first injection characteristic shape and a second injection characteristic shape based on engine operating parameters. The apparatus and method may be adapted to control a fuel injection system, and to operate in at least a split injection mode and a boot injection mode, including steps or means for determining whether an acceleration condition exists, and on the basis of such determination, rapidly changing from a split injection mode to a boot injection mode. This may include a fuel injection control system and/or a controller operative to identify an acceleration condition on the basis of at least one sensed acceleration-related engine operating condition, and to rapidly change the fuel injection mode for at least one fuel injector from the split fuel injection mode to the boot fuel injection mode. The fuel injection control system and/or a controller may also be operable to determine a rail pressure, whether the rail pressure is within a predetermined limit, and on that basis, to modify at least one of a main fuel injection signal timing and an anchor fuel injection signal timing such that a resulting multiple fuel injection has a boot injection shape.

US Patent:

6845747, Jan 25, 2005

Filed:

Jul 9, 2002

Appl. No.:

10/191740

Inventors:

Jason J. Rasmussen - Sparland IL, US
Kevin P. Duffy - E. Peoria IL, US
Kurtis M. Best - Princeville IL, US
Matthew R. Roth - Metamora IL, US

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F02B 312

US Classification:

123299, 123294

Abstract:

A method for operating an engine at idle that reduces NOand controls smoke and hydrocarbon emissions. An idle delivery quantity of fuel is determined and divided into a first quantity of fuel and a second quantity of fuel in approximately equal quantities. During a compression stroke of an engine piston, the first quantity of fuel is injected into an engine cylinder. Adjusting at least one of timing and quantity of the injection of the first quantity of fuel reduces, at least in part, NOemissions. At a timing angle of at least thirty degrees after the first quantity of fuel is injected and after the first quantity of fuel has been burned, there is an injection of the second quantity of fuel. Adjusting at least one of timing and quantity of the injection of the second quantity of fuel reduces, at least in part, smoke emissions.

US Patent:

6470849, Oct 29, 2002

Filed:

Jun 26, 2001

Appl. No.:

09/888585

Inventors:

Kevin P. Duffy - East Peoria IL
Brian G. McGee - Chillicothe IL
Matthew R. Roth - Metamora IL
Jason J. Rasmussen - Edwards IL

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 3704

US Classification:

123299, 123300, 123501, 123305

Abstract:

A fuel injection control system and method for controlling a fuel injection control system of a direct injection internal combustion engine, capable of issuing a pilot and a main injection during fuel injection into an engine cylinder, determining whether a pilot injection is enabled or disabled for each of the plurality of direct injection devices for each engine operation cycle, and modifying a corresponding main injection timing at least on the basis of the pilot injection determination. The fuel injection control system including at least one direct fuel injection device operable to deliver partitioned separate injections of fuel directly into a combustion chamber of the internal combustion engine. The control system operable on the basis of engine operating parameters to control operation of the at least one direct fuel injection device, and to determine the partitioned separate injections of fuel including a pilot injection fuel quantity, a main injection fuel quantity, an anchor injection fuel quantity, a pilot injection timing and duration, a main injection timing and duration, and an anchor injection timing and duration. The fuel injection control system providing these parameters as fuel injection signal to produce the partitioned separate injections of fuel, the fuel injection signal being determined based on predetermined engine operating parameters and information extracted from at least one look-up map.

US Patent:

20220325658, Oct 13, 2022

Filed:

Apr 13, 2021

Appl. No.:

17/229446

Inventors:

- Peoria IL, US
Yongli Qi - Peoria IL, US
Jason Jon Rasmussen - Hopewell IL, US
Daniel J. Sordelet - Peoria IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02B 23/06

Abstract:

Operating an engine includes moving a piston in a combustion chamber between a bottom dead center position and a top dead center position in an engine cycle. A fuel is injected into the combustion chamber through a plurality of sets of nozzle outlets varied set-to-set with respect to outlet size and spray angle. Spray jets of the injected fuel are propagated in an impingement-limiting fuel spray pattern that is based on the set-to-set variation in outlet size and spray angle so as to limit dissipation of heat from combustion of the injected fuel to material of the engine by way of a thermal barrier coating (TBC) upon a surface of the combustion chamber.

US Patent:

20200263627, Aug 20, 2020

Filed:

Feb 19, 2019

Appl. No.:

16/279564

Inventors:

- Deerfield IL, US
Jason Jon Rasmussen - Hopewell IL, US
Bobby John - Peoria, IN

Assignee:

Caterpillar Inc. - Deerfield IL

International Classification:

F02D 41/40
F02D 41/00
F02D 35/02
F02D 13/02

Abstract:

A combustion control system for a dual fuel engine includes a combustion control unit structured to receive phasing data for combustion of a main charge of gaseous fuel ignited by way of pilot shots of a liquid fuel, output a pilot fueling command based on the phasing data, and output a valve timing command. The combustion control unit is further structured to vary a phasing of combustion of a main charge of a gaseous fuel ignited by pilot shots of a liquid fuel based on an adjustment to at least one of a pilot shot delivery parameter or a valve timing parameter such as intake valve closing timing from a first engine cycle to a second engine cycle. Control of the intake valve timing can be based on a main pilot shot timing error.

US Patent:

20190218993, Jul 18, 2019

Filed:

Jan 16, 2018

Appl. No.:

15/872389

Inventors:

- Peoria IL, US
David A. Pierpont - Dunlap IL, US
Jason J. Rasmussen - Hopewell IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02D 41/40
F02B 37/12
F02D 41/00

Abstract:

A method for controlling an engine in response to an increase in a load on the engine is disclosed. The engine includes a cylinder with a piston slidably disposed therein between a top dead center position and a bottom dead center position. The cylinder and the piston define a combustion chamber. The method includes initiating a first injection event and a second injection event. The first injection event includes introducing a first predetermined quantity of fuel into the combustion chamber at least 5 degrees before the piston reaches the top dead center position. The second injection event includes introducing a second predetermined quantity of fuel into the combustion chamber not earlier than 30 degrees after the piston moves away from the top dead center position.

US Patent:

20160208749, Jul 21, 2016

Filed:

Jan 20, 2015

Appl. No.:

14/600841

Inventors:

- Peoria IL, US
Vijay Turlapati - Peoria IL, US
Christopher Gallmeyer - Chillicothe IL, US
Jason Rasmussen - Hopewell IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02M 43/04

Abstract:

A method for controlling fuel flow in a multi-fuel engine is disclosed. The method includes determining an estimated lower heating value (LHV) of a gaseous fuel by, at least, comparing a mapped volume flow value with an input volume flow value, the input volume flow value based on the input power. The method further includes determining a gaseous fuel flow rate for the gaseous fuel, the gaseous fuel flow rate based on, at least, a specific fuel substitution ratio of the gaseous fuel and a secondary fuel and the estimate LHV of the gaseous fuel source.

US Patent:

20150369716, Dec 24, 2015

Filed:

Jun 23, 2014

Appl. No.:

14/311853

Inventors:

- Peoria IL, US
Christopher Gallmeyer - Chillicothe IL, US
Venkat Vijay Kishore Turlapati - Peoria IL, US
Brett Zook - Cutler IN, US
Jason Rasmussen - Hopewell IL, US

International Classification:

G01N 9/26

Abstract:

The disclosure relates to a system and method for determining the specific gravity of a fuel used in a dual fuel engine. The system includes a fuel rail, at least one sensor, and a processor. The method includes sensing and recording, with the at least one sensor and the at least one memory, a first pressure profile of a first fuel in the fuel rail and a second pressure profile of a second fuel in the fuel rail. The first fuel has a known specific gravity and the second fuel has an unknown specific gravity. The method further includes calculating the second specific gravity of the second fuel, with a processor, based on the first pressure profile, the second pressure profile, and the first specific gravity.