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公开(公告)号：US12297754B2
公开(公告)日：2025-05-13
申请号：US17800001
申请日：2021-02-19
Applicant: Eaton Intelligent Power Limited
Inventor： Michele Angelo Cecchi , Marco Ravoni , Maria Letizia Ciardullo , Raffaele DiMaro , Nicola Andrisani
Abstract: Several devices are disclosed that can be usable together or used in other valvetrains. Disclosed herein are a rocker arm assembly, compliance capsules for a switchable capsule of the rocker arm, actuators, and support structures for the actuators. The alternative compliance capsules can be electromechanically actuated by the alternative actuators, which are hung over the rocker shaft by the support structure. A cam actuator can be in addition to an overhead cam rail and in addition to the rocker shaft. The cam actuator can be configured with a compliance capsule so that the switching of the switchable capsule is mechanically linked and less reliant on precise electrical signal timing.
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公开(公告)号：US20250059898A1
公开(公告)日：2025-02-20
申请号：US18934706
申请日：2024-11-01
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani , Emanuele Raimondi , Massimo D'Amore
Abstract: A rocker arm assembly capable of switchably deactivating a roller assembly includes a valve end and a cam end having first and second roller assemblies, and a latching mechanism. The latching mechanism includes rocker body pins and roller body pins. The rocker body pins include first and second end pins and a connection pin, each pin provided within a rocker arm body along a latching axis. The roller body pins include first and second locking pins, each roller body pin provided within a respective roller assembly. In a first latching mode, the first roller assembly is deactivated and the second roller assembly is activated. In a second latching mode, the second roller assembly is deactivated and the first roller assembly is activated.
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公开(公告)号：US20250003356A1
公开(公告)日：2025-01-02
申请号：US18828968
申请日：2024-09-09
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani , Emanuele Raimondi
Abstract: In one embodiment, a system for synchronization is provided. The system comprises a switchable first rocker arm, a switchable second rocker arm, a first switching mechanism arranged in the first rocker arm and configured to controllably switch the first rocker arm by moving between a first position and a second position, and a second switching mechanism arranged in the second rocker arm and configured to controllably switch the second rocker arm by moving between a third position and a fourth position. Switching of the first rocker arm and switching of the second rocker arm are implemented by a single actuation source and controlled to occur in sequence.
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4.发明授权公开(公告)号：US12180863B2
公开(公告)日：2024-12-31
申请号：US18555020
申请日：2022-04-14
Applicant: Eaton Intelligent Power Limited
Inventor： Emanuele Raimondi , Nicola Andrisani
Abstract: A switchable castellation assembly can include a lost motion shaft, the lost motion shaft being configured to transfer a lift profile to a valve end. A switchable castellation device can comprise a rotatable first spline bushing and a spline body, wherein the first spline bushing can be changed between a locked position and an unlocked position, and a lost motion can be obtained by sliding the lost motion shaft.
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公开(公告)号：US20240229686A9
公开(公告)日：2024-07-11
申请号：US18548022
申请日：2022-03-07
Applicant: Eaton Intelligent Power Limited
Inventor： Emanuele Raimondi , Nicola Andrisani
CPC classification number: F01L1/185 , F01L13/0005 , F01L2001/186
Abstract: A bidirectional latch pin assembly can comprise a housing portion comprising a latch port. A latch pin in the latch port can comprise a stepped nose extending from a body portion. The stepped nose can comprise a first step and a second step. A spring can be biased against a guide mounted in the latch port and the spring can be configured to bias the latch pin to a first position extending the first step out of the latch port. A first actuation assembly can be configured to move the latch pin to a second position extending the first step and the second step out of the latch port. A second actuation assembly can be configured to move the latch pin to a third position pulling the first step and the second step into the latch port. A switchable rocker arm and a valvetrain assembly can be formed therewith.
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Patent Agency Ranking
公开(公告)号：US11976577B2
公开(公告)日：2024-05-07
申请号：US17306972
申请日：2021-05-04
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Nicola Andrisani , Fabiano Contarin , Emanuele Raimondi , Majo Cecur , Alessio Lorenzon
CPC classification number: F01L1/18 , F01L1/08 , F01L1/2422 , F01L13/0005 , F01L2001/186 , F01L2001/2433 , F01L2013/001
Abstract: A valve train assembly for an internal combustion engine includes: a dual body rocker arm for controlling a valve of a cylinder, the rocker arm including a first body, a second body mounted for pivotal motion with respect to the first body, a first biasing means, and a latch pin moveable between a first position in which the latch pin latches the first body and the second body together and a second position in which the first body and the second body are un-latched to allow pivotal motion of the second body relative to the first body; and an actuator arrangement external to the dual body rocker arm and drivable by an actuation source, the actuator arrangement moving the latch pin from one of the first position and the second position to the other of the first position to the second position.
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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：US20210254512A1
公开(公告)日：2021-08-19
申请号：US17306972
申请日：2021-05-04
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Nicola Andrisani , Fabiano Contarin , Emanuele Raimondi , Majo Cecur , Alessio Lorenzon
Abstract: A valve train assembly for an internal combustion engine includes: a dual body rocker arm for controlling a valve of a cylinder, the rocker arm including a first body, a second body mounted for pivotal motion with respect to the first body, a first biasing means, and a latch pin moveable between a first position in which the latch pin latches the first body and the second body together and a second position in which the first body and the second body are un-latched to allow pivotal motion of the second body relative to the first body; and an actuator arrangement external to the dual body rocker arm and drivable by an actuation source, the actuator arrangement moving the latch pin from one of the first position and the second position to the other of the first position to the second position.
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公开(公告)号：US20210040868A1
公开(公告)日：2021-02-11
申请号：US16978201
申请日：2019-03-06
Applicant: Eaton Intelligent Power Limited
Inventor： Yuriy Mysak , Nicola Andrisani , Emanuele Raimondi
Abstract: An actuation apparatus for actuating a component of a switchable valve train device of an internal combustion engine includes: a support body for mounting on a cylinder head cover of the internal combustion engine; an actuation lever mounted to the support body for pivotal movement of the actuation lever between a first position for actuation of the component and a second position for allowing de-actuation of the component; and a biasing means for urging the actuation lever from the second position towards the first position. In use, the biasing means becomes biased when an actuation source causes the actuation lever to pivot to the second position. When the actuation source attempts to actuate the component when the component is non-actuatable, the biasing means causes the actuation lever to pivot from the second position to the first position, thereby to actuate the component when the component becomes actuatable again.
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公开(公告)号：US20190120090A1
公开(公告)日：2019-04-25
申请号：US16094492
申请日：2017-04-21
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Nicola Andrisani , Fabiano Contarin , Emanuele Raimondi , Majo Cecur , Alessio Lorenzon
Abstract: A valve train assembly includes: a first group of one or more dual body rocker arms and a second group of one or more dual body rocker arms, the first group for controlling one or more valves of a first cylinder and the second group for controlling one or more valves of a second cylinder, each of the dual body rocker arms including a first body, a second body, and a latching arrangement for latching and unlatching the first body and the second body; and an actuator arrangement external to the dual body rocker arms for controlling the latching arrangement, the actuator arrangement including a shaft having a first set of one or more cams for controlling the latching arrangements of the first group of one or more dual body rocker arms and a second set of one or more cams for controlling the latching arrangements of the second group.
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