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公开(公告)号：US12276213B2
公开(公告)日：2025-04-15
申请号：US18711993
申请日：2022-11-21
Applicant: DAIMLER TRUCK AG
Inventor： Matthias Lahr , Patrick Rohde
Abstract: The invention relates to a valve train (10) for an internal combustion engine, having a first rocker arm (32) which is mounted on a rocker shaft (30) so as to be pivotable around a pivot axis (44) in relation to the rocker shaft (30), having a first gas exchange valve (18) which can be actuated by pivoting the rocker arm (32) around the pivot axis (44) in relation to the rocker shaft (30) and can thus be moved translationally, and having a second gas exchange valve (20). An intermediate piece (50) is provided which is formed separately from the first rocker arm (32) and mounted on the rocker shaft (30) so as to be pivotable around the pivot axis (44) in relation to the rocker shaft (30), can be actuated by pivoting of first rocker arm (32) around the pivot axis (44) and in relation to the rocker shaft (30) by means of the first rocker arm (32) and can thus be pivoted around the pivot axis (44) in relation to the rocker shaft (30), whereby the second gas exchange valve (20) can be actuated and can thus be moved translationally.
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公开(公告)号：US20250075644A1
公开(公告)日：2025-03-06
申请号：US18898369
申请日：2024-09-26
Applicant: Eaton Intelligent Power Limited
Inventor： Ondrej Císar , Ondrej Bolehovský
Abstract: A swing bridge for a rocker arm assembly is provided. The swing bridge may be configured to be selectively actuated by a first rocker arm or a second rocker arm and span a first valve and a second valve. The swing bridge may have a bridge body, and a swing mechanism disposed at least partially in the bridge body. The swing mechanism may have a first surface for receiving motion from the first rocker arm and be configured to transfer the motion to the first valve through a rotary portion that is rotatable relative to the bridge body. The swing bridge may swing angularly upon actuation by the first rocker arm so as to actuate the first valve without actuating the second valve and actuate both the first valve and the second valve upon actuation by the second rocker arm.
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公开(公告)号：US20250043704A1
公开(公告)日：2025-02-06
申请号：US18923408
申请日：2024-10-22
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani
Abstract: A rocker arm assembly includes an engine brake capsule assembly. The engine brake capsule assembly movable between a retracted position and an extended position. The engine brake capsule assembly comprises a body comprising a lower chamber and an upper chamber. The engine brake capsule assembly further comprises a plunger disposed partially within the lower chamber, wherein the plunger comprises an external shoulder disposed on a side of the plunger, and a locking pin configured to extend into the lower chamber and engage with the external shoulder of the plunger. The engine brake capsule assembly further comprises an actuation pin disposed within the upper chamber and extending down into an internal housing disposed within the lower chamber and a check ball valve assembly disposed within the plunger configured to selectively enable a hydraulic fluid into an internal chamber of the plunger.
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公开(公告)号：US20250043703A1
公开(公告)日：2025-02-06
申请号：US18715133
申请日：2022-12-02
Applicant: Eaton Intelligent Power Limited
Inventor： Emanuele RAIMONDI , Massimo D'AMORE
Abstract: A valve bridge assembly for an engine includes a main body configured to engage a distal end of at least one valve stem. A receiving body is movably disposed within a cavity of the main body between a first position and a second position. The receiving body includes at least one key-receiver. A piston body is movably attached to the main body and includes a key configured to be received into the key-receiver of the receiving body. When the receiving body is in the first position. the key-receiver feature and key are misaligned and a force applied to the piston body is transmitted to the at least one valve stem via the receiving body and the main body. When the receiving body is in the second position, the key-receiver and the key are aligned and a force applied to the piston body causes the piston body to be displaced relative to the main body.
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公开(公告)号：US12188385B2
公开(公告)日：2025-01-07
申请号：US18557150
申请日：2022-04-26
Applicant: Eaton Intelligent Power Limited
Inventor： Long Wang , Nicola Andrisani
Abstract: A combined exhaust and engine brake rocker arm assembly (20) configured to selectively open first and second exhaust valves (26, 28) includes a rocker arm body (40), an exhaust rocker arm assembly (16) formed in the rocker arm body (40), and a lost motion spigot assembly (56) including an adjustment nut (70) and guide (62) configured to receive a shaft assembly (60) for adjusting a lash of the lost motion spigot assembly (56). The shaft assembly is disposed within a bore (92) of the adjustment nut below an upper surface thereof, and an engine brake rocker arm assembly (18) is formed in the rocker arm body (40) and configured to operate in a collapse mode and a rigid mode. The lost motion spigot assembly (56) is configured to selectively engage a valve bridge (52) to open the first and second exhaust valves (26, 28), and the engine brake rocker arm assembly (18) is configured to selectively engage the valve bridge (52) to open only the first exhaust valve (26).
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Patent Agency Ranking
公开(公告)号：US20240392704A1
公开(公告)日：2024-11-28
申请号：US18797133
申请日：2024-08-07
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani , Emanuele Raimondi , Massimo D'Amore
Abstract: An exhaust valve rocker arm assembly selectively operable in an engine braking mode includes a rocker arm and a valve end configured to selectively act on a valve bridge to engage a first and a second exhaust valve. The valve end includes a brake capsule to selectively extend in a first position to act on the first exhaust valve through the valve bridge. The valve end also includes a lost motion mechanism capable of selectively transmitting motion of the rocker arm to the valve bridge. The lost motion mechanism may integrate a hydraulic lash adjuster in particular embodiments.
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公开(公告)号：US12152515B2
公开(公告)日：2024-11-26
申请号：US17569298
申请日：2022-01-05
Applicant: DEERE & COMPANY
Inventor： Kyle D. Redfern , Neil S. Erickson , Gregory J. Horton
Abstract: An engine braking system includes a camshaft, a follower, an exhaust armature, a lever, and a hydraulically actuated piston. The camshaft includes at least one cam. The cam has a lobe and a brake bump. The follower engages the cam. The exhaust armature is coupled to the follower. The lever is coupled to the exhaust armature. The hydraulically actuated piston moves the lever. Hydraulic actuation of the piston causes a change in lash distance between the cam and the follower. In an engine brake mode, the follower contacts the cam throughout rotation of the cam.
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公开(公告)号：US12146427B2
公开(公告)日：2024-11-19
申请号：US18247005
申请日：2021-09-21
Applicant: STREPARAVA S.P.A. CON SOCIO UNICO
Inventor： Davide Ferrario , Francesco Mega , Matteo Magni
Abstract: A switchable rocker arm to control the lift of a valve bridge or of a single valve of a valve train group of an internal combustion engine; the switchable rocker arm being able to rotate around a first axis and comprising: a cam body, which is configured to be rotated by a cam; a valve body, which is configured to act upon the valve bridge or the single valve; wherein the switchable rocker arm can selectively be switched between a first configuration, in which the rotation of the cam body around the axis generates a movement of the valve body, and a second configuration, in which the rotation of the cam body around the axis does not generate any movement of the valve body.
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公开(公告)号：US12116909B2
公开(公告)日：2024-10-15
申请号：US16342353
申请日：2017-10-16
Applicant: Eaton Intelligent Power Limited
Inventor： Douglas Anthony Hughes , Matthew Richard Busdiecker , Dale Arden Stretch , Petr Liskar , Jiri Cecrle , Michael J. Campbell
CPC classification number: F01L1/185 , F01L1/24 , F01L1/267 , F01L13/0005 , F01L2001/186 , F01L2001/187 , F01L2301/00 , F01L2305/00 , F01L2820/03
Abstract: A valvetrain suitable for an internal combustion engine of a type that includes a combustion chamber, a moveable valve having a seat formed within the combustion chamber, and a camshaft. The valvetrain includes a rocker arm assembly having a rocker arm and an electrical device that either configures the rocker arm assembly or provides position feedback for a part of the rocker arm assembly. The valvetrain includes a framework that fits around a spark plug tube while holding a component of a circuit that includes the electrical device in a position adjacent the rocker arm assembly. The position may place the component in contact with or very close to the rocker arm assembly. This framework structure may effectively utilize the available space under a valve cover while facilitating correct positioning of the component in relation to the rocker arm assembly.
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公开(公告)号：US12098660B1
公开(公告)日：2024-09-24
申请号：US18224607
申请日：2023-07-21
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Colin Foster
CPC classification number: F01L1/267 , F01L1/181 , F01L1/20 , F01L1/462 , F01L9/20 , F01L13/0005 , F01L2001/467
Abstract: A switchable valve bridge for an internal combustion engine is provided that includes an outer housing, an inner housing, a locking collar, and a first ramp. The outer housing includes two valve pallets configured to interface with two poppet valves. The inner housing is slidably disposed within the outer housing. The inner housing has a first locking latch configured to move radially relative to an actuation axis of the inner housing. The locking collar is configured to move axially via an actuation force applied to the locking collar in a first axial direction parallel to the actuation axis. The first ramp is disposed within both the first locking aperture and the locking collar. The first ramp is configured to be actuated by the locking collar such that axial movement of the first ramp causes radial movement of the first locking latch.
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