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公开(公告)号：US20210062916A1
公开(公告)日：2021-03-04
申请号：US16555573
申请日：2019-08-29
Applicant: GM Global Technology Operations LLC
Inventor： Balakrishna Chinta , John B. Fisher , Zheng Ma
Abstract: A piston assembly for an internal combustion engine of a motor includes a piston head having an outer diameter surface spaced a first distance from the longitudinal axis and an annular surface spaced a second distance from the longitudinal axis, with the second distance being less than the first distance. Upper and lower walls extend between the annular surface and the outer diameter surface so as to define an annular groove in the outer diameter surface. A piston ring is received within the annular groove and includes an inner diameter surface facing the annular surface of the piston head. The inner diameter surface of the piston ring and the annular surface of the piston head cooperate with one another to define a plurality of pockets angularly spaced from one another about the longitudinal axis and configured to receive oil.
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公开(公告)号：US09970476B2
公开(公告)日：2018-05-15
申请号：US15048333
申请日：2016-02-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dale E. Murrish , John B. Fisher , Scott A. Hucker , Amit Kumar , Balakrishna Chinta , James Dwight Cremonesi
CPC classification number: F16C3/06 , B22D19/00 , B22D25/02 , B22D29/001 , B23B41/00 , B23B2215/20 , F16C3/10 , F16C3/14 , F16C2360/22
Abstract: A method of manufacturing a crankshaft assembly includes configuring a crankshaft with a crankpin journal having a cavity extending at least partially from a first axial side to a second axial side of the crankpin journal, and opening at at least one of the first axial side and the second axial side. The method includes disposing a core plug in the cavity. The crankshaft has a first density and the core plug may have a second density which may be less than the first density. A crankshaft assembly includes the crankshaft and the core plug.
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公开(公告)号：US09797512B2
公开(公告)日：2017-10-24
申请号：US14923597
申请日：2015-10-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alan W. Hayman , Rodney E. Baker , Dale E. Murrish , Amit Kumar , Balakrishna Chinta
CPC classification number: F16J1/16 , F02F3/00 , F04B39/0005 , F04B53/14 , F04B53/147
Abstract: An assembly such as a piston assembly for an engine includes a piston pin that has an outer member and a core. The outer member has a cavity extending lengthwise therethrough. The cavity has a first volume. The core is fit to the outer member in the cavity, and has a second volume less than the first volume. For example, the second volume may be less than the first volume because the core has an opening, because the core is shorter in length than the cavity, or both. A method of manufacturing a piston pin includes providing an outer member having a first density and a first length, creating a cavity that extends lengthwise through the outer member, providing a core having a second density and a second length, and inserting the core into the cavity of the outer member.
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Patent Agency Ranking
公开(公告)号：US12092052B2
公开(公告)日：2024-09-17
申请号：US18152309
申请日：2023-01-10
Applicant: GM Global Technology Operations LLC
Inventor： Alok Warey , Ronald O. Grover, Jr. , Balakrishna Chinta , Elana M. Chapman , John O. Waldman , Hugh W. Miller
CPC classification number: F02D41/22 , F02D35/023 , F02D41/30 , F02D2041/1433
Abstract: A method for early detection of a stochastic preignition (SPI) in an internal combustion engine includes monitoring sensor data from a sensor that is coupled to the internal combustion engine of a vehicle, determining whether a SPI event will occur using the sensor data and a Hankel Alternative View of Koopman (HAVOK) model, and commanding the vehicle to take a corrective action before the SPI event occurs to prevent the SPI event from happening in response to determining that the SPI event will occur.
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公开(公告)号：US20240229733A1
公开(公告)日：2024-07-11
申请号：US18152309
申请日：2023-01-10
Applicant: GM Global Technology Operations LLC
Inventor： Alok Warey , Ronald O. Grover, JR. , Balakrishna Chinta , Elana M. Chapman , John O. Waldman , Hugh W. Miller
CPC classification number: F02D41/22 , F02D35/023 , F02D41/30 , F02D2041/1433
Abstract: A method for early detection of a stochastic preignition (SPI) in an internal combustion engine includes monitoring sensor data from a sensor that is coupled to the internal combustion engine of a vehicle, determining whether a SPI event will occur using the sensor data and a Hankel Alternative View of Koopman (HAVOK) model, and commanding the vehicle to take a corrective action before the SPI event occurs to prevent the SPI event from happening in response to determining that the SPI event will occur.
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公开(公告)号：US11313466B2
公开(公告)日：2022-04-26
申请号：US16555573
申请日：2019-08-29
Applicant: GM Global Technology Operations LLC
Inventor： Balakrishna Chinta , John B Fisher , Zheng Ma
Abstract: A piston assembly for an internal combustion engine of a motor includes a piston head having an outer diameter surface spaced a first distance from the longitudinal axis and an annular surface spaced a second distance from the longitudinal axis, with the second distance being less than the first distance. Upper and lower walls extend between the annular surface and the outer diameter surface so as to define an annular groove in the outer diameter surface. A piston ring is received within the annular groove and includes an inner diameter surface facing the annular surface of the piston head. The inner diameter surface of the piston ring and the annular surface of the piston head cooperate with one another to define a plurality of pockets angularly spaced from one another about the longitudinal axis and configured to receive oil.
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公开(公告)号：US20170241473A1
公开(公告)日：2017-08-24
申请号：US15048333
申请日：2016-02-19
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dale E. Murrish , John B. Fisher , Scott A. Hucker , Amit Kumar , Balakrishna Chinta , James Dwight Cremonesi
CPC classification number: F16C3/06 , B22D19/00 , B22D25/02 , B22D29/001 , B23B41/00 , B23B2215/20 , F16C3/10 , F16C3/14 , F16C2360/22
Abstract: A method of manufacturing a crankshaft assembly includes configuring a crankshaft with a crankpin journal having a cavity extending at least partially from a first axial side to a second axial side of the crankpin journal, and opening at at least one of the first axial side and the second axial side. The method includes disposing a core plug in the cavity. The crankshaft has a first density and the core plug may have a second density which may be less than the first density. A crankshaft assembly includes the crankshaft and the core plug.
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公开(公告)号：US20170114898A1
公开(公告)日：2017-04-27
申请号：US14923597
申请日：2015-10-27
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alan W. Hayman , Rodney E. Baker , Dale E. Murrish , Amit Kumar , Balakrishna Chinta
IPC: F16J1/16
CPC classification number: F16J1/16 , F02F3/00 , F04B39/0005 , F04B53/14 , F04B53/147
Abstract: An assembly such as a piston assembly for an engine includes a piston pin that has an outer member and a core. The outer member has a cavity extending lengthwise therethrough. The cavity has a first volume. The core is fit to the outer member in the cavity, and has a second volume less than the first volume. For example, the second volume may be less than the first volume because the core has an opening, because the core is shorter in length than the cavity, or both. A method of manufacturing a piston pin includes providing an outer member having a first density and a first length, creating a cavity that extends lengthwise through the outer member, providing a core having a second density and a second length, and inserting the core into the cavity of the outer member.
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