Charlie C Kim

US Patent:

6755022, Jun 29, 2004

Filed:

Feb 26, 2003

Appl. No.:

10/372929

Inventors:

Charlie Chang-Won Kim - Martinsburg WV
Timothy Andrew Suder - Greencastle PA
Steven Stuart Trevitz - Mercersburg PA
Jeffrey Scott Zsoldos - Knoxsville MD

Assignee:

Mack Trucks, Inc. - Allentown PA

International Classification:

F02B 3710

US Classification:

60608, 123496, 239 88

Abstract:

A turbo-charged internal combustion cylinder assembly includes a combustion chamber, an intake port communicably connected with an intake manifold, and an exhaust port communicably connected with an exhaust manifold. An intake valve is disposed within the intake port, and an exhaust valve is disposed within the exhaust port, the valves facilitating, in an open position, or restricting, in a closed position, gas flow between their respective ports and the combustion chamber. A compressor may be communicably connected to the intake manifold so as to provide pre-combustion gases to, and regulate pressure of the combustion chamber. The exhaust valve may open while the intake valve is closed to exhaust post-combustion gases from the combustion chamber. Alternatively, the exhaust valve may open while the intake valve is open to admit post-combustion gases into the combustion chamber if the combustion chamber pressure is lower than the exhaust port pressure.

US Patent:

6805093, Oct 19, 2004

Filed:

Mar 19, 2003

Appl. No.:

10/391427

Inventors:

Jeffrey S. Zsoldos - Knoxville MD
Charlie C. Kim - Martinsburg WV
William A. Meacock - Carlisle PA

Assignee:

Mack Trucks, Inc. - Allentown PA

International Classification:

F02D 1304

US Classification:

123321, 12356814

Abstract:

A system for accomplishing engine exhaust braking and exhaust gas recirculation for an engine having an exhaust manifold and a plurality of exhaust valves per cylinder during a four stroke engine cycle is provided. The system includes an actuation device operable to provide valve actuation of a single exhaust valve for an exhaust braking event and an exhaust gas recirculation event. The exhaust valve is not completely closed during the exhaust braking event and the exhaust gas recirculation event. The exhaust braking event includes actuating a single exhaust valve beginning during a second half of a compression stroke and a first half of an expansion stroke, and closing the exhaust valve beginning during a second half of an exhaust stroke. The exhaust gas recirculation event includes reactuating the exhaust valve beginning during a first half of an intake stroke, and closings the exhaust valve beginning during a second half of the intake stroke. Since a single exhaust valve is actuated during the exhaust braking and exhaust gas recirculation events, the overall performance of the vehicle is increased.

US Patent:

6968831, Nov 29, 2005

Filed:

Mar 30, 2004

Appl. No.:

10/812016

Inventors:

Charlie Chang-Won Kim - Martinsburg WV, US
Timothy Andrew Suder - Greencastle PA, US
Steven Stuart Trevitz - Mercersburg PA, US
Jeffrey Scott Zsoldos - Knoxsville MD, US

Assignee:

Mack Trucks, Inc. - Allentown PA

International Classification:

F02B047/08

US Classification:

12356811

Abstract:

A turbo-charged internal combustion cylinder assembly includes a combustion chamber which may be communicably connected to a compressor via an intake port through an intake manifold and aftercooler so the compressor may provide pre-combustion gases to the combustion chamber when the intake valve is open. An exhaust port communicably connects the combustion chamber to an exhaust manifold. An exhaust valve may open to exhaust post-combustion gases to the exhaust manifold while an intake valve is substantially closed, and the exhaust valve may open to admit post-combustion gases to the combustion chamber while the intake valve is substantially open and an exhaust port pressure in the exhaust port is higher than a combustion chamber pressure in the combustion chamber. A fuel injector may admit fuel to the combustion chamber. A spill valve may control a rate of fuel injection to the combustion chamber, the spill valve having a first position providing a maximum fuel injection rate, a second position providing a substantially zero fuel injection rate, and at least one intermediate position providing an intermediate fuel injection rate between the maximum fuel injection rate and the zero fuel injection rate.

US Patent:

20010035171, Nov 1, 2001

Filed:

Mar 27, 2001

Appl. No.:

09/817265

Inventors:

Charlie Kim - Martinsburg WV, US
Robert Gorman - Chambersburg PA, US

International Classification:

F02M025/07
F02B047/08
F02D023/00
F02B033/44

US Classification:

123/568120, 060/605200, 060/602000

Abstract:

A turbocharged internal combustion engine assembly with exhaust gas recirculation (EGR) includes an air compressor driven by an exhaust turbine, an EGR line that diverts exhaust gases from an exhaust line leading from the engine to an air intake line leading to the engine from the compressor, and a combustion bypass line that conveys compressed air from the compressor to the exhaust turbine without combustion. A pressure adjusting feature disposed along at least one of the air intake line and the exhaust line maintains the pressure at the turbine inlet below the pressure at the compressor outlet and above the pressure at the air inlet of the engine. Examples of suitable pressure adjusting features include a venturi placed in the air intake line at the second point, a power turbine located along the exhaust line downstream of the exhaust turbine, a split exhaust manifold feeding unequal turbine inlets, and an orifice located along the exhaust line between the EGR line and the bypass line.

US Patent:

20230061758, Mar 2, 2023

Filed:

Sep 1, 2021

Appl. No.:

17/463572

Inventors:

- Peoria IL, US
Charlie KIM - Dunlap IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02D 41/40

Abstract:

Systems and methods regarding a ducted fuel injection (DFI) combustion system for an internal combustion engine can control an injection timing of a fuel injector to output fuel injections through at least one duct and into a combustion chamber of the internal combustion engine. The injection timing can include one or more pilot injections according to a predetermined range before top dead center (BTDC) for a combustion cycle; and a main injection into the combustion chamber for the combustion cycle after all of the one or more pilot injections. A first amount of the fuel injected for the main injection can be greater than a second amount of fuel injected for the one or more pilot injections. The predetermined range before top dead center (BTDC) of the one or more pilot injections can be from 85 to 40 degrees BTDC.

US Patent:

20180313280, Nov 1, 2018

Filed:

May 1, 2017

Appl. No.:

15/582852

Inventors:

- Peoria IL, US
Charlie Chang-Won Kim - Dunlap IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02D 41/00
F02M 25/10
F02M 21/02
F02M 31/20
F01L 1/344

Abstract:

A method to ignite a gaseous fuel in an engine of an engine system is disclosed. The method includes introducing a compound having a peroxide group into a main combustion chamber of the engine for igniting the gaseous fuel. Further, the method includes controlling, by a controller, one or more parameters of the engine system to attain a temperature in the main combustion chamber within a temperature range. The compound decomposes into a radical, thus facilitating ignition of the gaseous fuel.

US Patent:

20180038269, Feb 8, 2018

Filed:

Aug 5, 2016

Appl. No.:

15/229821

Inventors:

- Peoria IL, US
Charlie Kim - Dunlap IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02B 19/10
F02P 13/00
F02D 41/30
F02B 19/18

Abstract:

A sparkplug assembly having a prechamber volume is operatively associated with the combustion chamber of an internal combustion engine such that the prechamber volume is in fluid communication with the combustion chamber. To purge exhaust gasses from the prechamber volume prior to ignition, the sparkplug assembly is operatively associated with a high-pressure air/fuel source that directs a pressurized air/fuel purge charge to the prechamber volume. The pressurized air/fuel purge charge may be at stoichiometric conditions. The high-pressure air/fuel source is configured to direct the pressurized air/fuel purge charge during at least a portion of the compression stroke to maintain a largely stoichiometric mixture of air and fuel in the prechamber volume.

US Patent:

20180023466, Jan 25, 2018

Filed:

Jul 22, 2016

Appl. No.:

15/217186

Inventors:

- Peoria IL, US
Charlie C. Kim - Dunlap IL, US

Assignee:

Caterpillar Inc. - Peoria IL

International Classification:

F02B 43/08
F02M 31/08
F02M 25/12

Abstract:

A method for reforming fuel for an engine is disclosed. The method comprising heating, in a non-catalytic combustor, a mixture of fuel and air at a temperature in a range from 550K to 950K, to partially oxidize the fuel to generate one or more free radicals. The one or more free radicals constitute reformed fuel. Further, the reformed fuel is supplied to the engine.