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

IPC: F01L1/14 ,  F01L1/18 ,  F01L1/46 ,  F01L13/00 ,  F01L13/06 ,  F01L1/047

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.

公开(公告)号：US20230332519A1

公开(公告)日：2023-10-19

申请号：US17720410

申请日：2022-04-14

Applicant: Caterpillar Inc.

Inventor： John Stephen PIPIS, JR. ,  Selvakumar SELVARAJ ,  Eric Lee SCHROEDER

IPC: F01L1/18 ,  F01L1/14

CPC classification number: F01L1/181 ,  F01L1/146 ,  F02F1/4214

Abstract: A valve bridge to operatively interface with a rocker arm and a valve, and systems, assemblies, and methods thereof can comprise: a body, of the valve bridge, having a first side and a second side opposite the first side, a first leg of the valve bridge extending from the first side of the body, a second leg of the valve bridge extending from the first side of the body, and a third leg of the valve bridge extending from the first side of the body. A first pin can extend from an end of the first leg opposite the body, and a second pin can extend from an end of the second leg opposite the body.

公开(公告)号：US20230272728A1

公开(公告)日：2023-08-31

申请号：US18042663

申请日：2021-08-24

Applicant: AVL LIST GMBH

Inventor： Martin KLAMPFER ,  Andreas ZURK ,  Thomas SALMUTTER

IPC: F01L13/00 ,  F01L1/18 ,  F01L1/14

CPC classification number: F01L13/0021 ,  F01L1/185 ,  F01L1/146 ,  F01L2001/186 ,  F01L13/0005 ,  F01L2013/001

Abstract: The invention relates to a valve-actuating device for actuating a valve of a reciprocating piston engine, comprising a first and second rocker arm rotatably mounted about a common rotational axis; a pushrod connected to the first rocker arm so as to transmit an actuating movement of the first rocker arm to a valve; a first and second cam arranged on a shaft, where the first rocker arm marks a contour of the first cam and the second rocker arm marks a contour of the second cam, where the rocker arms are connected together via a mechanical coupling apparatus having a locking element able to be brought into at least a first position and a second position and configured to transmit an actuating movement of the second rocker arm to the first rocker arm at least in the first position of the locking element; and a switching device having a slotted guide element which is designed to bring the locking element of the coupling apparatus at least from the first position to the second position and vice-versa.

公开(公告)号：US11459915B2

公开(公告)日：2022-10-04

申请号：US16619238

申请日：2018-04-05

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Oliver Schnell ,  Peter Sailer ,  Oliver Witter

IPC: F01L1/24 ,  F01L1/245 ,  F01L1/14 ,  F01L1/18 ,  F01L13/00 ,  F01L1/344

Abstract: This disclosure relates to a hydraulic support element for a switchable rocker arm of a valve train of an internal combustion engine. The hydraulic support element includes a cup-shaped cylinder, within which a hollow piston is arranged in an axially displaceable manner. The piston includes a filter cartridge which is in the form of a hollow body and can be charged from the outside with pressurized oil and an interior space of which is connected to an outlet opening of the contact head. An interior space of the piston has two pressurized oil chambers, including a first pressurized oil chamber above the piston head and connected to a first pressurized oil feed, and a second pressurized oil chamber formed under the contact head and connected to a second pressurized oil feed. The filter cartridge is tubular and located in the second pressurized oil chamber.

公开(公告)号：US20220275778A1

公开(公告)日：2022-09-01

申请号：US17625353

申请日：2020-06-09

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Norbert Geyer ,  Marco Junker

IPC: F02M59/10 ,  F04B1/0426 ,  F04B9/04 ,  F04B1/0408 ,  F01L1/14

Abstract: The disclosure relates to a roller tappet for a high-pressure fuel pump. The roller tappet includes a housing that accommodates a cam contact roller next to a drive-side annular face of the housing. A bridge piece sits on an inner lateral surface of the housing, after the cam contact roller, as viewed from the drive-side annular face. An outer end face of the bridge piece has a rest for a pump piston. A separate adapter bolt protrudes from the rest beyond the output-side annular face of the housing; an end face of the adapter bolt, remote from the bridge piece, serves as a direct rest for the pump piston. An annular disc sits next to the output-side annular face of the housing, and the bore of said annular disc surrounds and retains the adapter bolt.

公开(公告)号：US11384725B2

公开(公告)日：2022-07-12

申请号：US17253399

申请日：2018-07-05

Applicant: HONDA MOTOR CO., LTD.

Inventor： Naotoshi Nio ,  Kota Tokubi ,  Kentaro Sugimura

IPC: F02N9/00 ,  F02N19/00 ,  F01L1/047 ,  F01L13/08 ,  F01L1/02 ,  F01L1/14 ,  F01L1/18 ,  F01L1/46

Abstract: A decompression shaft (56) of a decompression device (50) includes an engagement pin (53) that is guided by a guide groove (51a) formed in a decompression weight (51), a decompression cam (54) that is provided on one cam surface of an intake valve cam (25c) and an exhaust valve cam (25b) so as to advance and retreat, and a connection portion (55) that connects the engagement pin (53) and the decompression cam (54). The decompression weight (51) is formed with a rotation restricting groove (51e) that restricts rotation of the decompression shaft (56) when a force acts in a direction in which the decompression cam (54) moves on the decompression shaft (56) from an advanced position to a retracted position when an engine (E) is stopped and that is continuous with the guide groove (51a).

公开(公告)号：US11339690B2

公开(公告)日：2022-05-24

申请号：US17146443

申请日：2021-01-11

Applicant: Eaton Intelligent Power Limited

Inventor： Mark Vanwingerden ,  Andrew Lee

IPC: F01L13/06 ,  F01L1/18 ,  F01L1/047 ,  F01L1/24 ,  F01L1/46 ,  F01L1/26 ,  F01L13/00 ,  F01L1/14 ,  F01L1/245

Abstract: A valvetrain assembly configured to selectively perform a bleeder brake operation includes a rocker arm configured to rotate about a rocker shaft, a camshaft having a lobe configured to impart motion to the rocker arm through a pushrod, and a valve bridge assembly operably associated with the rocker arm and configured to be selectively engaged by the rocker arm to open at least one of a first and second engine valve. An engine brake capsule is operably associated with the valve bridge assembly and configured to operate in a drive mode where the engine brake capsule does not cause the valve bridge assembly to open the first or second engine valves, and a brake mode where the engine brake capsule engages the valve bridge assembly to partially open the first engine valve to perform the bleeder brake operation.

公开(公告)号：US11306624B2

公开(公告)日：2022-04-19

申请号：US16930886

申请日：2020-07-16

Applicant: Caterpillar Inc.

Inventor： John Stephen Pipis, Jr. ,  Selvaganpathi Ganesan

IPC: F01L1/14 ,  F01L1/08 ,  F01L1/46 ,  F01L1/18 ,  F01M9/10 ,  F02M59/10 ,  F02M59/02 ,  F01L1/26 ,  F01L1/20

Abstract: A valve actuation system for an engine includes a rotatable camshaft, an injector actuation linkage, and a valve actuation linkage. The valve actuation linkage includes a valve lifter, a valve pushrod, and a rocker arm. At least one of a rocker arm center plane defined by the valve rocker arm or a lifter roller center plane defined by the valve lifter is spaced an offset distance from a pushrod axis, providing an increased contact width between an injector roller in the injector actuation linkage and one of a plurality of cam lobes of the camshaft. The valve lifter includes a fork defining a center plane spaced an offset distance from a center axis of the valve lifter. A rocker arm includes a screw bore offset relative to a rocker arm center plane.

公开(公告)号：US11286896B2

公开(公告)日：2022-03-29

申请号：US17262820

申请日：2019-05-17

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Norbert Geyer ,  Franz Huschka

IPC: F01L1/14 ,  F02M59/10

Abstract: The disclosure proposes a tappet with a housing which is composed of a drive-side and an output-side section. The drive-side section, at its outer end, has a roller and the output-side section, at its outer end, has a contact area for a follower part. The separate sections are axially spaced apart from one another and are connected to one another by a central rod piece.

公开(公告)号：US11236644B1

公开(公告)日：2022-02-01

申请号：US17219478

申请日：2021-03-31

Applicant: Powerhouse Engine Solutions Switzerland IP Holding GmbH

Inventor： Sandeep Kamble ,  Dattatraya Somnath Bhagoji

IPC: F01L1/18 ,  F01L1/14 ,  F01M9/10

Abstract: Systems and methods for an engine are provided. The engine includes a straight rocker shaft passing through each of a first rocker arm and a second rocker arm, the first rocker arm being shaped differently from the second rocker arm.