Title of Invention

"COMBUSTION CONTROL SYSTEM OF A HOMOGENEOUS CHARGE"

Abstract An internal combustion engine has at least one combustion chamber and a piston slidably disposed within the at least one combustion chamber. The piston is configured to reciprocate between a top-dead-center position and a bottom-dead-center position. The internal combustion engine also has an air supply in selective fluid communication with the at least one combustion chamber and a fuel supply in selective fluid communication with the at least one combustion chamber. The internal combustion engine further has a supply of non-combustible gas and at least one injector in fluid communication with the at least one combustion chamber and the supply of non-combustible gas. The at least one injector is configured to inject-combustible gas from the supply into the at least one combustion chamber.
Full Text DESCRIPTION (COMPLETE) OCR NOT PREPARE
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I/We claim
1. An internal combustion engine (10), comprising: at least one combustion chamber (20);
a piston (64) slidably disposed within the at least one combustion chamber (20) and configured to reciprocate between a top-dead-center position and a bottom-dead-center position;
an air supply in selective fluid communication with the at least one combustion chamber (20);
a source of fuel (36) in selective fluid communication with the at least one combustion chamber (20);
a combustion control system (12) for controlling combustion timing; a source of pressurized non-combustible gas (80); and characterized in that
at least one injector (82) in fluid communication with the at least one combustion chamber (20) and the source of pressurized non-combustible gas (80), the at least one injector (82) configured to inject an amount of pressurized non-combustible gas from the source (80) into the at least one comhustion chamber (20);
the injection of the amount of pressurized non-combustible gas into the at least one combustion chamber (20) is adapted to cause auto-ignition of an amount of the fuel supply and the air supply in the at least one combustion chamber (20).
2. The internal combustion engine (10) as claimed in claim 1, wherein the at least one combustion chamber (20) includes a pre-combustion chamber (100), the injection of pressurized non-combustible gas being into the pre-combustion chamber (100).
3. The internal combustion engine (10) as claimed in claim 1, wherein the source of fuel (36) and the air supply are selectively communicated with the at least one combustion chamber (20) when the piston (64) is moving from the top-dead-center position to the bottom-dead-center position during an intake stroke such that a substantially homogeneous fuel and air mixture is formed when the piston (64) is moving from the bottom-dead-center position to the top-dead-center position during a compression stroke, prior to injection of the pressurized non-combustible gas.
4. The internal combustion engine (10) as claimed in claim 3, wherein the injection of pressurized non-combustible gas causes auto-ignition of the substantially homogeneous mixture of fuel and air.
5. The internal combustion engine (10) as claimed in claim 1, wherein the injection of pressurized non-combustible gas facilitates mixing of an amount of the fuel supply and an amount of the air supply within the at least one combustion chamber (20).

6. The internal combustion engine (10) as claimed in claim 1, wherein the pressurized non-combustible gas is injected when the piston (64) is moving from the top-dead-center position to the bottom-dead-center position during a power stroke.
7. The internal combustion engine (10) as claimed in claim 1, wherein the combustion control system (12) comprises the source of pressurized gas (80), the injector (82), an electronic control unit (84), a crank angle sensor (86), and an intake manifold sensor (88).
8. A method of operating an internal combustion engine (10), comprising:
introducing an amount of fuel and air into at least one combustion chamber (20) of the
internal combustion engine (10);
moving a piston (64) between a bottom-dead-center position and a top-dead-center
position to compress the amount of fuel and air;
characterized in that
injecting an amount of pressurized non-combustible gas into the at least one combustion
chamber (20) to cause auto-ignition of the amount of fuel and air.
9. The method of claim 8, wherein the amount of fuel and air is introduced into the at least one
combustion chamber (20) when the piston (64) is moving from the top-dead-center position
to the bottom-dead-center position during an intake stroke, such that a substantially
homogeneous mixture is formed when the piston (64) is moving from the bottom-dead-cenler
position to the top-dead-center position during a compression stroke, prior to injection of the
pressurized non-combustible gas.
10. The method as claimed in claim 8, including homogeneously mixing the amount of fuel and air prior to introduction of the amount of fuel and air into the at least one combustion chamber (20).

Documents:

1840-del-2005-Abstract-(13-02-2013).pdf

1840-del-2005-abstract.pdf

1840-del-2005-assignment.pdf

1840-DEL-2005-Claims-(08-06-2012).pdf

1840-del-2005-Claims-(13-02-2013).pdf

1840-DEL-2005-Claims-(23-08-2011).pdf

1840-del-2005-claims.pdf

1840-DEL-2005-Correspondence Others-(08-06-2012).pdf

1840-del-2005-Correspondence Others-(13-02-2013).pdf

1840-del-2005-Correspondence Others-(13-07-2012).pdf

1840-DEL-2005-Correspondence Others-(23-08-2011).pdf

1840-DEL-2005-Correspondence-Others-(01-12-2010).pdf

1840-del-2005-Correspondence-Others-(25-09-2012).pdf

1840-del-2005-correspondence-others.pdf

1840-del-2005-description (complete).pdf

1840-del-2005-drawings.pdf

1840-DEL-2005-Form-1-(01-12-2010).pdf

1840-DEL-2005-Form-1-(23-08-2011).pdf

1840-del-2005-form-1.pdf

1840-DEL-2005-Form-13-(23-08-2011).pdf

1840-del-2005-form-18.pdf

1840-del-2005-Form-2-(13-02-2013).pdf

1840-DEL-2005-Form-2-(23-08-2011).pdf

1840-del-2005-form-2.pdf

1840-DEL-2005-Form-3-(01-12-2010).pdf

1840-del-2005-Form-3-(13-07-2012).pdf

1840-del-2005-form-3.pdf

1840-del-2005-form-5.pdf

1840-del-2005-form-9.pdf

1840-DEL-2005-GPA-(01-12-2010).pdf

1840-del-2005-GPA-(13-02-2013).pdf


Patent Number 255510
Indian Patent Application Number 1840/DEL/2005
PG Journal Number 09/2013
Publication Date 01-Mar-2013
Grant Date 27-Feb-2013
Date of Filing 15-Jul-2005
Name of Patentee CATERPILLAR INC.
Applicant Address 100 N.E. ADAMS STEET, PEORIA, STATE OF ILLINOIS 61629-6490 U.S.A.
Inventors:
# Inventor's Name Inventor's Address
1 FIVELAND SCOTT B. 600 PINE HOLLOW ROAD, APT. 9-2A, EASTNORWICH, NEW YORK 11732 U.S.A.
2 HOLTNER JOEL D. 108 FAIRBANKS ROAD, APT. 1, FARMINTON, MAINE 04938 U.S.A.
3 ROBEL WADE J. 1401 MAPLEWOOD, NORMAL, ILLINOIS 61761 U.S.A.
PCT International Classification Number F02M23/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 10/902,287 2004-07-30 U.S.A.