Chad P Koci

20110011082, Jan 20, 2011

Jul 14, 2009

12/502645

Darius Mehta - San Antonio TX, US
Chad P. Koci - San Antonio TX, US

Southwest Research Institute - San Antonio TX

F02D 23/00
F01N 3/10
F02G 3/00

60602, 60299, 60614

A method and system for reducing undesired exhaust emissions during cold start of a turbocharger-equipped internal combustion engine. A bypass line in the engine compartment has a bypass valve that permits exhaust to be bypassed around the turbocharger's turbine during cold start. An oxidation catalyst is closely coupled to the bypass valve.

20130000620, Jan 3, 2013

Jul 2, 2011

13/175847

Chad P. Koci - San Antonio TX, US
Darius Mehta - San Antonio TX, US

SOUTHWEST RESEARCH INSTITUTE - San Antonio TX

F02D 41/00

123703

A method of stoichiometrically operating a diesel-fueled internal combustion engine. A control unit is provide with stored data representing, within a range of exhaust valve timing or event modifications, an amount of fresh air flow and exhaust gas residuals resulting from each modification. During operation of the engine, the control unit is used to determining a desired amount of exhaust gas residuals for a given engine load; accessing the stored data to determine a modification that will provide the desired amount of exhaust gas residuals; and generating a control signal that will result in the desired modification.

20130006498, Jan 3, 2013

Jul 3, 2011

13/175872

Darius Mehta - San Antonio TX, US
Chad P. Koci - San Antonio TX, US

SOUTHWEST RESEARCH INSTITUTE - San Antonio TX

F02D 41/30
F02D 28/00

701104, 701105

A method of stoichiometrically operating a diesel-fueled internal combustion engine. During a main (conventional) fuel injection event, fuel is injected into the cylinders. The air-fuel ratio during this main fuel injection event is stoichiometric. The cylinders are operated by either advancing the exhaust valve closing or modifying the phasing of the exhaust and intake valve lift events, to achieve a negative valve overlap period between the end of the exhaust phase and the beginning of the intake phase of the engine cycle. Fuel is injected into the cylinders during the negative valve overlap period, which results in highly reactive fuel and reduces ignition delay during the main fuel injection event.

20130304357, Nov 14, 2013

May 14, 2012

13/471086

Chad P. Koci - Chillicothe IL, US
Vlad L.C. Ulmet - San Antonio TX, US
Stefan Simescu - Boerne TX, US
Magdi K. Khair - San Antonio TX, US
Gary D. Neely - Boerne TX, US

SOUTHWEST RESEARCH INSTITUTE - San Antonio TX

F02D 41/26
F02B 47/08
F01N 3/035
F02M 25/07

701108

A method for controlling emissions in the exhaust gas of a diesel engine, the engine having an exhaust gas recirculation (EGR) system. The engine's exhaust aftertreatment system need have only an oxidation catalyst and a particulate filter (with no NOx reduction or adsorption device). In “normal” engine conditions, the engine is operated with a lean air-fuel ratio, with “normal” engine conditions being engine conditions other than transient load increase engine conditions. Also, during normal engine conditions, the EGR system is used to reduce engine-out NOx. During transient load increase engine conditions, the engine is operated stoichiometrically or near stoichiometrically and the use of EGR is interrupted.

20220290641, Sep 15, 2022

Jun 3, 2022

17/831668

- Peoria IL, US
David Todd Montgomery - Edelstein IL, US
Dana Ray Coldren - Secor IL, US
Chad Koci - Washington IL, US

Caterpillar Inc. - Peoria IL

F02M 43/04
F02D 19/06

A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.

20220243691, Aug 4, 2022

Feb 4, 2021

17/167211

- Peoria IL, US
David Todd Montgomery - Edelstein IL, US
Dana Ray Coldren - Secor IL, US
Chad Koci - Washington IL, US

Caterpillar Inc. - Peoria IL

F02M 43/04
F02D 19/06

A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of injection and an end of injection, and an admission valve. The admission valve is movable to admit a pilot fuel into the fuel injector, such that the pilot fuel is conveyed through an outlet check to form, within a primary fuel passage fluidly connected to the plunger cavity, a segmented fuel charge of leading pilot fuel and trailing primary fuel by displacing some of the primary fuel. The liquid pilot fuel may be a higher cetane/lower octane liquid fuel, and the primary fuel may be a lower cetane/higher octane liquid fuel.

20220200291, Jun 23, 2022

Dec 18, 2020

17/127547

- Peoria IL, US
Jay R. Steffen - Washington IL, US
Chad Palmer Koci - Washington IL, US
Richard W. Kruiswyk - Dunlap IL, US

Caterpillar Inc. - Peoria IL

H02J 3/46
H02J 3/30
H02J 3/38

Controlling a hybrid power system includes calculating a power system state vector based on energy demand and a stored data array including a matrix defined by a power system hardware configuration. The control further includes producing a power request based on the power system state vector, and varying a flow of energy amongst energy devices using drive linkages in the hybrid power system based on the power request. Related apparatus, control logic and controller structure is disclosed.

20190063391, Feb 28, 2019

Aug 31, 2017

15/692408

- Peoria IL, US
Chad Palmer Koci - Washington IL, US
Kenth I Svensson - Peoria IL, US
Yongli Qi - Peoria IL, US
Eric Donald Wiebrecht - East Peoria IL, US

Caterpillar Inc. - Peoria IL

F02M 61/16
F02M 61/14
F02M 61/18
F02F 1/24
F02F 1/40

A fuel injector assembly for an engine. The engine includes a cylinder head defining a through-hole. The fuel injector assembly includes an insert, having a first end and a second end, configured to be received within the through-hole and coupled to the cylinder head. The insert defines a bore extending from the first end to the second end. The fuel injector assembly further includes a fuel injector including a plurality of orifices, received within the bore of the insert; and a duct structure including a plurality of ducts, coupled to the insert such that the plurality of ducts align with the plurality of orifices to at least partially receive one or more fuel jets from the plurality of orifices of the fuel injector.