Patents by Inventor Anwarul Karim
Anwarul Karim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 12378906Abstract: Examples include an exhaust manifold assembly for an internal combustion engine, the exhaust manifold assembly optionally including: an inner housing configured to receive an exhaust gas from a cylinder head of the internal combustion engine; an outer housing receiving at least a portion of the inner housing, wherein the outer housing is configured to receive a coolant flow that passes over the at least the portion of the inner housing; and a plurality of manifold flanges coupled to the outer housing and configured to mount on the cylinder head, wherein at least one of the plurality of manifold flanges has a sleeve portion forming a passage that receives a part of the inner housing therein and receives the coolant flow.Type: GrantFiled: June 7, 2024Date of Patent: August 5, 2025Assignee: Caterpillar Inc.Inventors: Md Anwarul Karim, Zhengfei Hu, Ryan M. Brown
-
Patent number: 9695721Abstract: A modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis. Exhaust manifold segments include a water jacket tube defining a liquid coolant passage around each of the plurality of exhaust manifold segments. The internal combustion engine also includes a coupling assembly for joining adjacent exhaust manifold segments. The coupling assembly includes a plurality of annular sealing devices configured to fit within a first set of grooves formed on an end portion of a first exhaust manifold segment. The coupling assembly also includes a spacing collar configured to attach to the end portion of the first exhaust manifold segment and couple with a fixed radial flange formed on an adjacent end portion of a second exhaust manifold segment to join the first exhaust manifold segment and the second exhaust manifold segment.Type: GrantFiled: May 26, 2015Date of Patent: July 4, 2017Assignee: Caterpillar Inc.Inventors: Ronald Maloney, Craig Hittle, Christopher Reed, Anwarul Karim, Daniel Barb
-
Publication number: 20160348564Abstract: A modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis. Exhaust manifold segments include a water jacket tube defining a liquid coolant passage around each of the plurality of exhaust manifold segments. The internal combustion engine also includes a coupling assembly for joining adjacent exhaust manifold segments. The coupling assembly includes a plurality of annular sealing devices configured to fit within a first set of grooves formed on an end portion of a first exhaust manifold segment. The coupling assembly also includes a spacing collar configured to attach to the end portion of the first exhaust manifold segment and couple with a fixed radial flange formed on an adjacent end portion of a second exhaust manifold segment to join the first exhaust manifold segment and the second exhaust manifold segment.Type: ApplicationFiled: May 26, 2015Publication date: December 1, 2016Applicant: Caterpillar Inc.Inventors: Ronald Maloney, Craig Hittle, Christopher Reed, Anwarul Karim, Daniel Barb
-
Patent number: 8973356Abstract: An internal combustion engine includes a cylinder block defining at least one cylinder, and a cylinder head coupled to the cylinder block. A modular exhaust manifold is coupled to the cylinder head and is configured to receive exhaust gas from the cylinder head. The modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis. Each of the exhaust manifold segments includes a segment of a water jacket tube defining a plurality of liquid coolant passages and a segment of an exhaust tube received within the water jacket tube segment. A joint between adjacent exhaust manifold segments includes a first sealing member configured to seal the exhaust tube at the joint and a second sealing member configured to seal at least one of the liquid coolant passages at the joint. The first and second sealing members are supported on and movable with different components.Type: GrantFiled: October 31, 2012Date of Patent: March 10, 2015Assignee: Caterpillar Inc.Inventors: MD Anwarul Karim, Robert A. Sarsfield, Daniel Richard Barb, Scott Alan Chockley
-
Publication number: 20140208726Abstract: An internal combustion engine includes a cylinder block defining at least one cylinder, and a cylinder head coupled to the cylinder block. An exhaust manifold is coupled to the cylinder head and configured to receive exhaust gas from the cylinder head. The exhaust manifold includes a water jacket tube defining a plurality of liquid coolant passages and an exhaust tube received within the water jacket tube. The exhaust manifold also includes an air gap between the exhaust tube and the water jacket tube. A support mat is positioned in the air gap and compressed between an outer surface of the exhaust tube and an inner surface of the water jacket tube.Type: ApplicationFiled: January 30, 2013Publication date: July 31, 2014Applicant: CATERPILLAR, INC.Inventors: MD Anwarul Karim, Robert A. Sarsfield, Daniel Richard Barb
-
Publication number: 20140116036Abstract: An internal combustion engine includes a cylinder block defining at least one cylinder, and a cylinder head coupled to the cylinder block. A modular exhaust manifold is coupled to the cylinder head and is configured to receive exhaust gas from the cylinder head. The modular exhaust manifold includes a plurality of exhaust manifold segments coupled together along a common axis. Each of the exhaust manifold segments includes a segment of a water jacket tube defining a plurality of liquid coolant passages and a segment of an exhaust tube received within the water jacket tube segment. A joint between adjacent exhaust manifold segments includes a first sealing member configured to seal the exhaust tube at the joint and a second sealing member configured to seal at least one of the liquid coolant passages at the joint. The first and second sealing members are supported on and movable with different components.Type: ApplicationFiled: October 31, 2012Publication date: May 1, 2014Applicant: CATERPILLAR, INC.Inventors: MD Anwarul Karim, Robert A. Sarsfield, Daniel Richard Barb, Scott Alan Chockley
-
Patent number: 8201405Abstract: A crossover for ducting exhaust produced by an engine. The crossover includes a front inside passage and rear outside passage. The front inside passage is configured to direct exhaust from one or more cylinders associated with a front of the engine to an inside volute of a turbocharger turbine. The rear outside passage is configured to direct exhaust from one or more cylinders associated with a rear of the engine to an outside volute of the turbocharger turbine. The inside volute is closer to the rear of the engine than the outside volute is.Type: GrantFiled: December 18, 2008Date of Patent: June 19, 2012Assignee: Caterpillar Inc.Inventors: Timothy Alan Bruce, Anwarul Karim, Scott Allen Thompson, Robert Charles Griffith, Jr.
-
Publication number: 20100154416Abstract: A crossover for ducting exhaust produced by an engine. The crossover includes a front inside passage and rear outside passage. The front inside passage is configured to direct exhaust from one or more cylinders associated with a front of the engine to an inside volute of a turbocharger turbine. The rear outside passage is configured to direct exhaust from one or more cylinders associated with a rear of the engine to an outside volute of the turbocharger turbine. The inside volute is closer to the rear of the engine than the outside volute is.Type: ApplicationFiled: December 18, 2008Publication date: June 24, 2010Applicant: Caterpillar Inc.Inventors: TIMOTHY ALAN BRUCE, ANWARUL KARIM, SCOTT ALLEN THOMPSON, ROBERT CHARLES GRIFFITH, JR.