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公开(公告)号：US20250020073A1
公开(公告)日：2025-01-16
申请号：US18899995
申请日：2024-09-27
Applicant: Eaton Intelligent Power Limited
Inventor： Alessio Lorenzon , Egidio Canzoniere
IPC: F01L13/00
Abstract: An actuation mechanism for selective switching of a valvetrain switching mechanism by a linear actuator mechanism includes an actuator arm having a pin contact surface for engaging an actuator pin of a linear actuator mechanism, a switching arm, and a lever axle pivotally coupling the actuator arm and the switching arm and rotatable about a lever axis, wherein the actuation mechanism is configured to rotate about the lever axis based on a selective extension of the actuator pin, wherein the switching arm is configured to selectively act on the valvetrain switching mechanism based on the rotation of the actuation mechanism; and wherein multiple interface positions on the pin contact surface of the actuator arm are each configured to cooperatively engage with the actuator pin at an orthogonal angle to the axis of linear motion of the actuator pin.
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2.发明授权公开(公告)号：US12196112B2
公开(公告)日：2025-01-14
申请号：US18020854
申请日：2021-08-10
Applicant: thyssenkrupp Dynamic Components GmbH , thyssenkrupp AG
Inventor： Marcel Weidauer
Abstract: The present invention concerns a sliding cam system for an internal combustion engine having at least one camshaft, an adjustment element and at least one actuator. The camshaft comprises a carrier shaft with a primary sliding cam element and at least one secondary sliding cam element. Each of the cam elements are arranged so as to be displaceable axially relative to the carrier shaft. Each of the cam elements comprises a shift gate with at least one shift groove. The actuator has at least one actuator pin which engages in the shift groove of the shift gate of the primary sliding cam element according to the necessary switch position of the camshaft. The adjustment element is arranged parallel to a longitudinal axis of the carrier shaft and is axially displaceable in the direction of the longitudinal axis of the carrier shaft and has at least two coupling pins.
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公开(公告)号：US12188384B2
公开(公告)日：2025-01-07
申请号：US18251253
申请日：2021-11-10
Applicant: Eaton Intelligent Power Limited
Inventor： Mirko Guaschino , Marco Ravoni , Nicola Andrisani , Michele Angelo Cecchi , Massimo D'Amore
Abstract: A latch assembly (500) can comprise a main latch pin assembly (531, 532) comprising a first diameter (D1) on a first main pin face (512, 522), and a secondary latch piston (541, 561) comprising a second diameter (D2) on a secondary piston face (543, 563). The secondary latch piston can be configured to selectively act on the main latching pin assembly. The main latch pin assembly can be biased to oppose the secondary latch piston. The first diameter can be greater than the second diameter. A rocker arm assembly (10) can comprise the latch assembly. A primary arm (100) can be configured to receive the main latch pin assembly. A secondary arm (300) can be configured to receive the secondary latch piston.
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公开(公告)号：US12188381B2
公开(公告)日：2025-01-07
申请号：US18042691
申请日：2021-08-24
Applicant: AVL LIST GMBH
Inventor： Martin Klampfer , Andreas Zurk , Thomas Salmutter
Abstract: A valve-actuating device for a valve of a reciprocating piston engine having a coupling apparatus with a locking element able to be brought into a first and second position by a mechanical switching device, the switching device comprising a guide rod and a parallel actuating rod capable of relative movement; a slotted guide element movably mounted on the guide rod for moving the locking element; a triggering element coupled to the slotted guide element; where the slotted guide element and triggering element are clamped between two stops on the actuating rod, each with an associated spring element, where the slotted guide element and the triggering element are displaceable along and/or parallel to the guide rod with the actuating rod; and a blocking element interacting with the triggering element which in a first state, blocks a displacement of the triggering element and the slotted guide element upon the axial displacing of the actuating rod such that the spring elements are preloaded, where in a second state, a displacement of the triggering element and the slotted guide element effects actuation of the coupling apparatus.
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公开(公告)号：US20250003357A1
公开(公告)日：2025-01-02
申请号：US18883862
申请日：2024-09-12
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani , Fabiano C.F. Contarin , Austin R. Zurface , Emanuele Raimondi
Abstract: In one embodiment, a system for synchronizing switching comprises a first body coupled to a pressurized fluid supply and a control fluid supply, and a second body comprising a spool valve that is configured to be contained within a spool valve housing and movable between an open position and a closed position, a biasing element that is configured to bias the spool valve, and at least three fluid channels that are configured to be fluidly connected to the spool valve housing. The first body and the second body are configured for relative movement to each other. The spool valve is further configured to selectively control fluid communication among the fluid channels based on relative movement between the first body and the second body.
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Patent Agency Ranking
公开(公告)号：US12180865B2
公开(公告)日：2024-12-31
申请号：US18262153
申请日：2022-01-20
Applicant: Eaton Intelligent Power Limited
Inventor： Nikhil Saggam , Shahnawaz Khan , Saurabh Patil , Matthew A. Vance
Abstract: A latch assembly and valvetrain therewith can comprise a stationary housing comprising a plunger cavity, a plunger in the plunger cavity, and a controllable upper latch member. The plunger can comprise a control end, a plunger body, a spigot body and a spigot end. The controllable upper latch member can be configured to selectively act on the control end and can be configured to switch between locking the plunger from moving along a first axis and unlocking the plunger to slide in the plunger cavity along the first axis. A slidable transverse latch member or rotatable upper castellation body can act as the controllable upper latch member. While a valve bridge and rocker arm can be movable, the housing for the latch assembly can be stationary.
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公开(公告)号：US20240401506A1
公开(公告)日：2024-12-05
申请号：US18796075
申请日：2024-08-06
Applicant: Cummins, Inc.
Inventor： Gregory J. MITCHUM , Adam C. Cecil , David M. BARNES , Scott R. BARDAKJY , Nathaniel P. HASSALL
Abstract: An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders. A valve train is provided for opening and closing intake and exhaust valves of the cylinders during nominal engine operations. The valve train is also configured for cylinder deactivation and to provide one or more selected lift profiles for opening and closing of the intake and/or exhaust valves.
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公开(公告)号：US12152513B2
公开(公告)日：2024-11-26
申请号：US17295087
申请日：2019-11-06
Applicant: Bayerische Motoren Werke Aktiengesellschaft
Inventor： Jan Clauberg , Steffen Lohde , Giovanni Mincione , Sebastian Sperrhacke , Din Wabbals
Abstract: A variable-lift valve train for a gas exchange valve of an internal combustion engine includes a lift adjuster, a lift actuator, and a lift lever. The lift adjuster has a working curve that is arrangeable at least in a first working position for setting a partial lift and in a second working position for setting a maximum lift. The working curve has a lift region and a base circle region. The lift actuator, which has an actuating contour configured to deflect the lift adjuster. The lift lever, which is deflectable via the working curve and thereby actuates a lift of the gas exchange valve. The valve train is configured to, in the first working position and in the second working position, actuate the gas exchange valve with an at least substantially equal maximum valve acceleration.
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公开(公告)号：US20240309826A1
公开(公告)日：2024-09-19
申请号：US18679577
申请日：2024-05-31
Applicant: Purdue Research Foundation
Inventor： Gregory M. Shaver , Dheeraj Gosala , Harikrishnan Raghukumar
CPC classification number: F02D41/1406 , F01L13/0005 , F02D35/02 , F02D41/0087 , F02D41/1498 , F02D41/28 , F01L2013/001 , F02D2041/1433 , F02D2041/288 , F02D2250/28
Abstract: A system and method for dynamically deactivating engine cylinders of an engine equipped with a cylinder deactivation system, where the system and method control torsional vibration in the engine while deactivating cylinders using a computer programed with a desired firing density and a controlled range of engine vibration frequencies. The computer dynamically determines a cylinder firing pattern that provides the desired firing density while optimizing a cost function norm in the controlled range of engine vibration frequencies. The cylinder deactivation system in the engine is then controlled using the determined cylinder firing pattern.
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公开(公告)号：US12006850B2
公开(公告)日：2024-06-11
申请号：US17740666
申请日：2022-05-10
Applicant: Eaton Intelligent Power Limited
Inventor： James E. McCarthy, Jr. , Eric Yankovic
CPC classification number: F01L13/06 , F01L1/24 , F01L1/26 , F01L1/265 , F01L1/267 , F01L13/00 , F01L13/0005 , F02D13/0207 , F02D13/0269 , F02D13/04 , F02D13/06 , F01L2013/001 , F02D2041/001 , Y02T10/12
Abstract: A method of providing a rocker arm set for a valvetrain includes providing a first intake rocker arm, a second intake rocker arm and a first exhaust rocker arm. The first intake rocker arm is configured as a switching rocker arm for a first intake valve on a first cylinder. The second intake rocker arm is for a second intake valve on a second cylinder. The second rocker arm is configured to operate in a normal Otto cycle mode. The first exhaust rocker arm is provided for a first exhaust valve on the second cylinder. The first intake rocker arm operates in one of an LIVC or EIVC mode where the first intake rocker arm is configured to open or close at a different time compared to the second intake valve. The first exhaust rocker arm operates in a cylinder deactivation mode.
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