Patents by Inventor Atsuhiko WATANABE
Atsuhiko WATANABE 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: 11293339Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.Type: GrantFiled: October 23, 2020Date of Patent: April 5, 2022Assignee: CUMMINS INC.Inventors: Philipe F. Saad, Leon A. LaPointe, Premjee Sasidharan, Atsuhiko Watanabe
-
Publication number: 20210040880Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.Type: ApplicationFiled: October 23, 2020Publication date: February 11, 2021Applicant: Cummins Inc.Inventors: Philipe F. Saad, Leon A. LaPointe, Premjee Sasidharan, Atsuhiko Watanabe
-
Patent number: 10815871Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.Type: GrantFiled: January 31, 2018Date of Patent: October 27, 2020Assignee: Cummins Inc.Inventors: Philipe F. Saad, Leon A. LaPointe, Premjee Sasidharan, Atsuhiko Watanabe
-
Publication number: 20200018223Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.Type: ApplicationFiled: January 31, 2018Publication date: January 16, 2020Applicant: Cummins Inc.Inventors: Philipe F. Saad, Leon A. LaPointe, Premjee Sasidharan, Atsuhiko Watanabe
-
Patent number: 9822702Abstract: A carbon scraper, a method of manufacturing a system with a carbon scraper, and method of scraping carbon from a piston of an internal combustion engine are provided. The carbon escaper includes an outer annular metallic shell portion having an annular recess therein. The annular scraper also includes an inlaid thermal barrier coating portion positioned within the annular recess of the outer annular metallic shell portion such that the inlaid thermal barrier coating portion is concentric with an outer annular metallic shell portion.Type: GrantFiled: February 11, 2015Date of Patent: November 21, 2017Assignee: Cummins, Inc.Inventors: Atsuhiko Watanabe, Andrew G. Kitchen, Philipe Saad
-
Publication number: 20170138251Abstract: An engine includes a cylinder having an internal combustion chamber and extending longitudinally, a cylinder head coupled to the cylinder, and a fuel-fed pre-chamber positioned within a portion of the cylinder head. The pre-chamber includes a pre-chamber volume and plurality of nozzle holes extending from the pre-chamber volume. The engine also includes an ignition source positioned longitudinally above the pre-chamber volume and a locating member positioned on at least one of the pre-chamber and the cylinder head. The locating member is configured to position the pre-chamber in a predetermined orientation within the cylinder head.Type: ApplicationFiled: November 12, 2015Publication date: May 18, 2017Inventors: Atsuhiko Watanabe, Patrick M. Pierz, Darren Ting
-
Patent number: 9574490Abstract: A turbocharged internal combustion engine system includes at least one high pressure turbocharger and at least one low pressure turbocharger arranged in series. A fuel source that provides fuel for gaseous fuel induction operation of the engine is connected to inject fuel between the low pressure compressor of the low pressure turbocharger and the high pressure compressor of the high pressure turbocharger.Type: GrantFiled: July 23, 2013Date of Patent: February 21, 2017Assignee: Cummins Inc.Inventor: Atsuhiko Watanabe
-
Patent number: 9562467Abstract: A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths.Type: GrantFiled: February 3, 2014Date of Patent: February 7, 2017Assignee: Cummins Intellectual Property, Inc.Inventor: Atsuhiko Watanabe
-
Publication number: 20170002734Abstract: A carbon scraper, a method of manufacturing a system with a carbon scraper, and method of scraping carbon from a piston of an internal combustion engine are provided. The carbon escaper includes an outer annular metallic shell portion having an annular recess therein. The annular scraper also includes an inlaid thermal barrier coating portion positioned within the annular recess of the outer annular metallic shell portion such that the inlaid thermal barrier coating portion is concentric with an outer annular metallic shell portion.Type: ApplicationFiled: February 11, 2015Publication date: January 5, 2017Applicant: Cummins, Inc.Inventors: Atsuhiko Watanabe, Andrew G. Kitchen, Philipe Saad
-
Publication number: 20150027115Abstract: A turbocharged internal combustion engine system includes at least one high pressure turbocharger and at least one low pressure turbocharger arranged in series. A fuel source that provides fuel for gaseous fuel induction operation of the engine is connected to inject fuel between the low pressure compressor of the low pressure turbocharger and the high pressure compressor of the high pressure turbocharger.Type: ApplicationFiled: July 23, 2013Publication date: January 29, 2015Applicant: Cummins Inc.Inventor: Atsuhiko Watanabe
-
Publication number: 20140144132Abstract: A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths.Type: ApplicationFiled: February 3, 2014Publication date: May 29, 2014Applicant: Cummins Intellectual Property, Inc.Inventor: Atsuhiko Watanabe
-
Patent number: 8640456Abstract: A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths.Type: GrantFiled: November 30, 2011Date of Patent: February 4, 2014Assignee: Cummins Intellectual Property, Inc.Inventor: Atsuhiko Watanabe
-
Publication number: 20130133630Abstract: A charge air cooler assembly for an internal combustion engine is described. A housing of the charge air cooler assembly includes a dividing wall that separates flow after the charge air cooler into two separate flow paths.Type: ApplicationFiled: November 30, 2011Publication date: May 30, 2013Applicant: CUMMINS INTELLECTUAL PROPERTY, INC.Inventor: Atsuhiko WATANABE