Patents by Inventor Pal Axelsson
Pal Axelsson 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).
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Patent number: 11608772Abstract: A pre-chamber arrangement (100) for a gas engine (1), including a pre-chamber body (20) accommodating a volume (30); and a supply device (50) for supplying a gaseous medium (52) into the pre-chamber volume (30); wherein the pre-chamber body (20) has a bottom portion (22) with channels (40) for allowing gas to flow between the pre-chamber volume (30) and a main combustion chamber (10) of the gas engine (1). Each channel (40) extends along a channel axis (C) from an inner opening (42) facing the pre-chamber volume (30) to an outer opening (44) configured to face the main combustion chamber (10). The bottom portion (22) has a curved outer surface (24). The channels (40) are obliquely arranged in relation to a radius (r) of the bottom portion (22). The bottom portion has flat surfaces (46) surrounding the outer openings of the channels.Type: GrantFiled: February 28, 2022Date of Patent: March 21, 2023Assignee: Scania CV ABInventors: Svante Lejon, Pål Axelsson
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Patent number: 11578683Abstract: A pre-chamber arrangement (100) for a gas engine (1), including a pre-chamber body (20) accommodating a volume (30); and an inlet passage (40) with an inlet port (42), for supplying a gaseous medium (50) into the pre-chamber volume (30); the pre-chamber volume (30) extends in a longitudinal direction (L) between a top end (32) and a bottom end (34); the pre-chamber volume (30) is configured to accommodate an end of a spark plug (60) at the top end (32) and at the bottom end (34), the pre-chamber body (20) has openings (26) for allowing gas to flow between the pre-chamber volume (30) and a main combustion chamber (10) of the gas engine (1); the inlet port (42) is positioned, at a distance (D) from the top end (32) of the pre-chamber volume (30), in the longitudinal direction (L), such that a volume of residual gases is trapped at the top end of the pre-chamber volume when the gaseous medium is supplied into the pre-chamber volume during an intake stroke.Type: GrantFiled: October 7, 2019Date of Patent: February 14, 2023Assignee: Scania CV ABInventors: Svante Lejon, Pål Axelsson
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Publication number: 20220186658Abstract: A pre-chamber arrangement (100) for a gas engine (1), including a pre-chamber body (20) accommodating a volume (30); and a supply device (50) for supplying a gaseous medium (52) into the pre-chamber volume (30); wherein the pre-chamber body (20) has a bottom portion (22) with channels (40) for allowing gas to flow between the pre-chamber volume (30) and a main combustion chamber (10) of the gas engine (1). Each channel (40) extends along a channel axis (C) from an inner opening (42) facing the pre-chamber volume (30) to an outer opening (44) configured to face the main combustion chamber (10). The bottom portion (22) has a curved outer surface (24). The channels (40) are obliquely arranged in relation to a radius (r) of the bottom portion (22). The bottom portion has flat surfaces (46) surrounding the outer openings of the channels.Type: ApplicationFiled: February 28, 2022Publication date: June 16, 2022Inventors: Svante Lejon, Pål Axelsson
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Patent number: 11261778Abstract: A pre-chamber arrangement (100) for a gas engine (1), including a pre-chamber body (20) accommodating a volume (30); and a supply device (50) for supplying a gaseous medium (52) into the pre-chamber volume (30); wherein the pre-chamber body (20) has a bottom portion (22) with channels (40) for allowing gas to flow between the pre-chamber volume (30) and a main combustion chamber (10) of the gas engine (1). Each channel (40) extends along a channel axis (C) from an inner opening (42) facing the pre-chamber volume (30) to an outer opening (44) configured to face the main combustion chamber (10). The bottom portion (22) has a curved outer surface (24). The channels (40) are obliquely arranged in relation to a radius (r) of the bottom portion (22). The bottom portion has flat surfaces (46) surrounding the outer openings of the channels.Type: GrantFiled: October 7, 2019Date of Patent: March 1, 2022Inventors: Svante Lejon, Pål Axelsson
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Publication number: 20220034282Abstract: A pre-chamber arrangement (100) for a gas engine (1), including a pre-chamber body (20) accommodating a volume (30); and an inlet passage (40) with an inlet port (42), for supplying a gaseous medium (50) into the pre-chamber volume (30); the pre-chamber volume (30) extends in a longitudinal direction (1) between a top end (32) and a bottom end (34); the pre-chamber volume (30) is configured to accommodate an end of a spark plug (60) at the top end (32) and at the bottom end (34), the pre-chamber body (20) has openings (26) for allowing gas to flow between the pre-chamber volume (30) and a main combustion chamber (10) of the gas engine (1); the inlet port (42) is positioned, at a distance (D) from the top end (32) of the pre-chamber volume (30), in the longitudinal direction (L), such that a volume of residual gases is trapped at the top end of the pre-chamber volume when the gaseous medium is supplied into the pre-chamber volume during an intake stroke.Type: ApplicationFiled: October 7, 2019Publication date: February 3, 2022Inventors: Svante LEJON, Pål AXELSSON
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Publication number: 20210355860Abstract: A pre-chamber arrangement (100) for a gas engine (1), including a pre-chamber body (20) accommodating a volume (30); and a supply device (50) for supplying a gaseous medium (52) into the pre-chamber volume (30); wherein the pre-chamber body (20) has a bottom portion (22) with channels (40) for allowing gas to flow between the pre-chamber volume (30) and a main combustion chamber (10) of the gas engine (1). Each channel (40) extends along a channel axis (C) from an inner opening (42) facing the pre-chamber volume (30) to an outer opening (44) configured to face the main combustion chamber (10). The bottom portion (22) has a curved outer surface (24). The channels (40) are obliquely arranged in relation to a radius (r) of the bottom portion (22). The bottom portion has flat surfaces (46) surrounding the outer openings of the channels.Type: ApplicationFiled: October 7, 2019Publication date: November 18, 2021Inventors: Svante LEJON, Pål AXELSSON
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Patent number: 9880033Abstract: An air mass sensor pipe (116) for a combustion engine includes an inlet opening (124) for air, an outlet opening (126) for air and an air mass sensor (118) arranged inside the pipe (116) between the inlet and outlet openings (124; 126). A first feed-through section (128) for the air is arranged upstream of the air mass sensor (118), the air mass sensor (118) is arranged in a second feed-through section (130) for the air, and that the first and second feed-through sections (128; 130) are displaced at an angle in relation to each other. Also a combustion engine which comprises such an air mass sensor pipe (116) is disclosed.Type: GrantFiled: November 6, 2013Date of Patent: January 30, 2018Assignee: SCANIA CV ABInventor: Pål Axelsson
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Publication number: 20150300855Abstract: An air mass sensor pipe (116) for a combustion engine includes an inlet opening (124) for air, an outlet opening (126) for air and an air mass sensor (118) arranged inside the pipe (116) between the inlet and outlet openings (124; 126). A first feed-through section (128) for the air is arranged upstream of the air mass sensor (118), the air mass sensor (118) is arranged in a second feed-through section (130) for the air, and that the first and second feed-through sections (128; 130) are displaced at an angle in relation to each other. Also a combustion engine which comprises such an air mass sensor pipe (116) is disclosed.Type: ApplicationFiled: November 6, 2013Publication date: October 22, 2015Applicant: Scania CV ABInventor: Pal Axelsson
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Patent number: 8499559Abstract: A turbine housing for a high-pressure turbo-charger of a turbo-charger engine system for an internal combustion engine is provided that includes, but is not limited to a low-pressure charger opening for taking up a low-pressure turbo-charger and a high-pressure charger opening for taking up a high-pressure turbo-charger. A high-pressure exhaust opening is attached to a corresponding flange at an exhaust manifold of the engine and there is a short-cut exhaust opening with a high-pressure turbine by-pass valve area attached to a corresponding flange at the exhaust manifold. An external connection opening is attached to a muffler, a waste gate valve area being provided in the close vicinity of the external connection opening.Type: GrantFiled: March 22, 2007Date of Patent: August 6, 2013Assignee: GM Global Technology Operations LLCInventors: Pal Axelsson, Hans Drangel, Björn Lind
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Patent number: 8307649Abstract: Arrangement of a two stage turbocharger system for an internal combustion engine including an intake manifold and an exhaust manifold, including a low-pressure turbocharger, a high-pressure turbocharger and a bypass duct in flow communication with an outlet of the low-pressure compressor, an inlet of the high-pressure compressor, an outlet of the high-pressure compressor and an inlet of the intake manifold. The bypass duct includes a first bypass valve for opening and closing the bypass duct. The first bypass valve and the high-pressure compressor are accommodated within a common housing.Type: GrantFiled: January 28, 2008Date of Patent: November 13, 2012Assignee: GM Global Technology Operations LLCInventors: Pal Axelsson, Hans Drangel, Björn Lund
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Publication number: 20110020108Abstract: A turbine housing for a high-pressure turbo-charger of a turbo-charger engine system for an internal combustion engine is provided that includes, but is not limited to a low-pressure charger opening for taking up a low-pressure turbo-charger and a high-pressure charger opening for taking up a high-pressure turbo-charger. A high-pressure exhaust opening is attached to a corresponding flange at an exhaust manifold of the engine and there is a short-cut exhaust opening with a high-pressure turbine by-pass valve area attached to a corresponding flange at the exhaust manifold. An external connection opening is attached to a muffler, a waste gate valve area being provided in the close vicinity of the external connection opening.Type: ApplicationFiled: March 22, 2007Publication date: January 27, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Pal Axelsson, Hans Drangel, Björn Lind
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Publication number: 20080178591Abstract: Arrangement of a two stage turbocharger system for an internal combustion engine comprising an intake manifold and an exhaust manifold, comprising a low-pressure turbocharger, a high-pressure turbocharger and a bypass duct in flow communication with an outlet of the low-pressure compressor, an inlet of the high-pressure compressor, an outlet of the high-pressure compressor and an inlet of the intake manifold. The bypass duct comprises a first bypass valve for opening and closing the bypass duct. The first bypass valve and the high-pressure compressor are accommodated within a common housing.Type: ApplicationFiled: January 28, 2008Publication date: July 31, 2008Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Pal AXELSSON, Hans DRANGEL, Bjorn LIND