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公开(公告)号：US11905859B2
公开(公告)日：2024-02-20
申请号：US17800072
申请日：2021-02-19
Applicant: Eaton Intelligent Power Limited
Inventor： Andrei D. Radulescu , Ramy Rezkalla , Daniel Nelson , James Sheren , Michele Angelo Cecchi , Marco Ravoni , Maria Letizia Ciardullo
CPC classification number: F01L1/181 , F01L1/20 , F01L13/065 , F01L2001/467 , F01L2013/001 , F01L2013/105 , F01L2305/00
Abstract: A castellation assembly comprises a lost motion spring assembly, an upper castellation piece, and a lower castellation piece. A spring hat comprises a crown, a pin hole through the crown, and a brim. A lost motion spring is seated against the spring hat. Upper castellation piece comprises a tubular body, an upper inner rim adjoining the brim, and upper castellation teeth. Lower castellation piece comprises a spring post extending up from a castellation body, the spring post passing through the lost motion spring, and through the pin hole. Lower castellation teeth extend from the castellation body. The lost motion spring is biased against the castellation body to lift the upper inner rim by the brim. A lash screw can house the spring post so that the spring post terminates inside the lash screw. A rocker arm is an example of a castellation assembly installation.
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公开(公告)号：US11555423B2
公开(公告)日：2023-01-17
申请号：US16961795
申请日：2019-01-11
Applicant: Eaton Intelligent Power Limited
Inventor： Matthew A. Vance , Nicola Andrisani , Nilesh L. Bagal , Andrei D. Radulescu
Abstract: An overhead cam engine system comprises a rotating overhead exhaust cam rail comprising a plurality of exhaust lobes. A first switching roller finger follower actuates a first exhaust valve, and is configured to switch between a first lift profile and a second lift profile. A second switching roller finger follower is coupled to actuate a second exhaust valve, and is configured to switch between a third lift profile and a fourth lift profile. The third and fourth lift profile are different than the first and second lift profile. An actuation assembly is connected to switch the first switching roller finger follower and the second switching roller finger follower to select between at least three exhaust lift modes to open and close the first exhaust valve and the second exhaust valve using combinations of the first, second, third and fourth lift profiles.
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公开(公告)号：US11286817B2
公开(公告)日：2022-03-29
申请号：US17018008
申请日：2020-09-11
Applicant: Eaton Intelligent Power Limited
Inventor： Andrei D. Radulescu , Mark Van Wingerden , Douglas J. Nielsen
Abstract: A rocker arm assembly comprises a valve side rocker arm portion, a cam side rocker arm portion configured to selectively rotate relative to the valve side rocker arm portion, and a latch pin assembly disposed in the valve side rocker arm portion and in the cam side rocker arm portion. A latch pin assembly is disposed for selective switching in the valve side latch bore and in the cam side latch bore. At least a portion of the latch pin assembly is configured so that when the latch pin assembly is selected to switch from a latched condition to the unlatched condition, and when the cam side rocker arm portion selectively rotates, the latch pin assembly is configured to retract from the forces of the rotation.
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公开(公告)号：US12037929B2
公开(公告)日：2024-07-16
申请号：US17613667
申请日：2020-05-22
Applicant: Eaton Intelligent Power Limited
Inventor： Emanuele Raimondi , Massimo D'Amore , Jeffrey R. Brown , Ramy Rezkalla , Matthew A. Vance , Andrei D. Radulescu , Brandon J. Elliott
CPC classification number: F01L1/185 , F01L13/0005 , F01L13/0036 , F01L2001/186 , F01L1/46 , F01L2001/467 , F01L2013/001 , F01L2301/00 , F01L2303/00 , F01L2305/02
Abstract: A switching roller finger follower (SRFF) for valve actuation includes an outer arm (16), a first inner arm (12), a bearing axle (50) and a latch pin (26). The outer arm (16) is formed of a metal stamping, and is pivotally coupled to a main axle (40). The first inner arm (12) is coupled to the main axle (40) and is pivotably secure to the outer arm. The bearing axle (50) extends through the outer arm and the first inner arm. The bearing axle supports a roller (20) thereon. The latch pin (26) is slidably disposed in the outer arm (16) and is movable between at least a first position where the outer arm (16) and the first inner arm (12) are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.
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Patent Agency Ranking
公开(公告)号：US20230102765A1
公开(公告)日：2023-03-30
申请号：US17800072
申请日：2021-02-19
Applicant: Eaton Intelligent Power Limited
Inventor： Andrei D. Radulescu , Ramy Rezkalla , Daniel Nelson , James Sheren , Michele Angelo Cecchi , Marco Ravoni , Maria Letizia Ciardullo
Abstract: A castellation assembly comprises a lost motion spring assembly, an upper castellation piece, and a lower castellation piece. A spring hat comprises a crown, a pin hole through the crown, and a brim. A lost motion spring is seated against the spring hat.
Upper castellation piece comprises a tubular body, an upper inner rim adjoining the brim, and upper castellation teeth. Lower castellation piece comprises a spring post extending up from a castellation body, the spring post passing through the lost motion spring, and through the pin hole. Lower castellation teeth extend from the castellation body. The lost motion spring is biased against the castellation body to lift the upper inner rim by the brim. A lash screw can house the spring post so that the spring post terminates inside the lash screw. A rocker arm is an example of a castellation assembly installation.-
公开(公告)号：US20220228516A1
公开(公告)日：2022-07-21
申请号：US17613667
申请日：2020-05-22
Applicant: Eaton Intelligent Power Limited
Inventor： Emanuele Raimondi , Massimo D'Amore , Jeffrey R. Brown , Ramy Rezkalla , Matthew A. Vance , Andrei D. Radulescu , Brandon J. Elliott
Abstract: A switching roller finger follower (SRFF) for valve actuation includes an outer arm (16), a first inner arm (12), a bearing axle (50) and a latch pin (26). The outer arm (16) is formed of a metal stamping, and is pivotally coupled to a main axle (40). The first inner arm (12) is coupled to the main axle (40) and is pivotably secure to the outer arm. The bearing axle (50) extends through the outer arm and the first inner arm. The bearing axle supports a roller (20) thereon. The latch pin (26) is slidably disposed in the outer arm (16) and is movable between at least a first position where the outer arm (16) and the first inner arm (12) are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.
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公开(公告)号：US20210071594A1
公开(公告)日：2021-03-11
申请号：US16961795
申请日：2019-01-11
Applicant: Eaton Intelligent Power Limited
Inventor： Matthew A. Vance , Nicola Andrisani , Nilesh L. Bagal , Andrei D. Radulescu
Abstract: An overhead cam engine system comprises a rotating overhead exhaust cam rail comprising a plurality of exhaust lobes. A first switching roller finger follower actuates a first exhaust valve, and is configured to switch between a first lift profile and a second lift profile. A second switching roller finger follower is coupled to actuate a second exhaust valve, and is configured to switch between a third lift profile and a fourth lift profile. The third and fourth lift profile are different than the first and second lift profile. An actuation assembly is connected to switch the first switching roller finger follower and the second switching roller finger follower to select between at least three exhaust lift modes to open and close the first exhaust valve and the second exhaust valve using combinations of the first, second, third and fourth lift profiles.
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公开(公告)号：US11982211B2
公开(公告)日：2024-05-14
申请号：US17273352
申请日：2019-09-03
Applicant: Eaton Intelligent Power Limited
Inventor： Andrei D. Radulescu , Andrew Lee
CPC classification number: F01L1/18 , F01L9/21 , F01L13/0005 , F02D13/06 , F01L2001/186 , F01L2009/2146 , F01L2009/2173 , F01L2013/001 , F02D2200/101
Abstract: Systems, methods, and control systems for a switching rocker arm assembly are disclosed. A switching rocker arm (10) engages a valve (29), the switching rocker arm (10) is movable by contact with a cam (60) having a lift portion (59) and a base circle (58). The switching rocker arm (10) comprises an inner arm (20), an outer arm (12) pivotably secured to the inner arm (20) and having a latch bore, and a latch pin (28) selectively movable between a first position where the latch pin (28) does not contact the inner arm (20), and a second position wherein the latch pin (28) contacts the inner arm (20). A solenoid assembly (500) is energized while the rocker arm is in contact with the lift portion (59) of the cam. The solenoid assembly is direct-acting and overhead and is calibratable with respect to the rocker arm.
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公开(公告)号：US20210246812A1
公开(公告)日：2021-08-12
申请号：US17273352
申请日：2019-09-03
Applicant: Eaton Intelligent Power Limited
Inventor： Andrei D. Radulescu , Andrew Lee
Abstract: Systems, methods, and control systems for a switching rocker arm assembly are disclosed. A switching rocker arm (10) engages a valve (29), the switching rocker arm (10) is movable by contact with a cam (60) having a lift portion (59) and a base circle (58). The switching rocker arm (10) comprises an inner arm (20), an outer arm (12) pivotably secured to the inner arm (20) and having a latch bore, and a latch pin (28) selectively movable between a first position where the latch pin (28) does not contact the inner arm (20), and a second position wherein the latch pin (28) contacts the inner arm (20). A solenoid assembly (500) is energized while the rocker arm is in contact with the lift portion (59) of the cam. The solenoid assembly is direct-acting and overhead and is calibratable with respect to the rocker arm.
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