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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：US20230175420A1
公开(公告)日：2023-06-08
申请号：US17998405
申请日：2021-05-13
Applicant: Eaton Intelligent Power Limited
Inventor： Marco AIMO BOOT , Matteo Raffaele COSTANTINI , Luigi LIA , Piero PARMEGGIANI
Abstract: A lash adjuster can include a hydraulic lash assembly, a mechanical lash assembly, and a check assembly. The hydraulic lash assembly can include a body, a top plunger, a leak down plunger, and the check assembly between the body and the leak down plunger. The mechanical lash assembly can be between the top plunger and the leak down plunger. The mechanical lash assembly can include a shim abutting the top plunger, a spacer, and a spring pressing against the spacer and the shim to form a gap between the top plunger and the leak down plunger. The lash adjuster can include the spring pressing directly against the spacer and directly or indirectly against the shim.
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3.发明授权公开(公告)号：US11549406B2
公开(公告)日：2023-01-10
申请号：US17594339
申请日：2020-05-07
Applicant: R. Bradford Fawley
Inventor： R. Bradford Fawley
Abstract: Valve clearance adjustment systems and related methods that can be used to quickly and easily establish and accurately fix a desired and consistent and replicable valve clearance gap in internal combustion engines with shaft mounted rocker arms where a manual valve lash adjustment is required. In some examples, valve adjustment systems include valve adjustment members that are movably disposed in rocker arms and that can be easily and selectively fixed in place in the rocker arm. Aspects also include indexing mechanisms (734, 822, 838) for quickly and easily setting a desired position of a valve adjustment screw in a rocker arm without needing to use a feeler gauge.
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4.发明申请公开(公告)号：US20220186638A1
公开(公告)日：2022-06-16
申请号：US17594339
申请日：2020-05-07
Applicant: R. Bradford Fawley
Inventor： R. Bradford Fawley
Abstract: Valve clearance adjustment systems and related methods that can be used to quickly and easily establish and accurately fix a desired and consistent and replicable valve clearance gap in internal combustion engines with shaft mounted rocker arms where a manual valve lash adjustment is required. In some examples, valve adjustment systems include valve adjustment members that are movably disposed in rocker arms and that can be easily and selectively fixed in place in the rocker arm. Aspects also include indexing mechanisms (734, 822, 838) for quickly and easily setting a desired position of a valve adjustment screw in a rocker arm without needing to use a feeler gauge.
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公开(公告)号：US11313255B2
公开(公告)日：2022-04-26
申请号：US16796094
申请日：2020-02-20
Applicant: COX POWERTRAIN LIMITED
Inventor： Adam Laycock
Abstract: A marine outboard motor having an internal combustion engine is provided. The internal combustion engine includes an engine block having at least one cylinder and a valve train comprising a cam, a valve assembly including a valve spring, a roller finger follower, and a pivot post. The pivot post extends from a fixed body of the engine block and defines a contact surface about which the roller finger follower pivots when deflected by the cam during use. The pivot post is moveable relative to the fixed body in a first longitudinal direction (A) against the action of the valve spring. A removable shim is disposed between the fixed body and a portion (182) of the pivot post to space the pivot post from the fixed body in the first longitudinal direction (A) and thereby reduce an amount of lash between the cam and the roller finger follower. The removable shim is dimensioned to fit at least partly around a shaft portion of the pivot post.
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Patent Agency Ranking
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.
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公开(公告)号：US20220018266A1
公开(公告)日：2022-01-20
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 , F01L1/20 , F01M9/10 , F02M59/10 , F02M59/02 , F01L1/26
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.
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公开(公告)号：US11193396B2
公开(公告)日：2021-12-07
申请号：US16456030
申请日：2019-06-28
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Andreas Biermann , Benedikt Noe , Martin Steigerwald , Michael Pribek , Frank Himsel
Abstract: A pre-assembled module for a variable-stroke valve drive of an internal combustion engine is provided. The module includes a base plate having at least one projecting guide plate, an e-linear actuator positioned on the projecting guide plate, and a longitudinally guided push rod with two adjusting fingers extending along a wall of the guide plate. Each respective adjusting finger has a contact surface for displacement of a transverse coupling slide of a switchable cam follower. A rocker arm, having first and second arms, is suspended on an underside of the base plate; the first arm in contact with an adjusting pin of the linear actuator; and, the second arm in contact with the push rod for displacement thereof in a first direction. A spring means for displacement of the push rod in a second direction is arranged between the push rod and the guide plate.
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公开(公告)号：US20210340891A1
公开(公告)日：2021-11-04
申请号：US17302475
申请日：2021-05-04
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Gabriel S. ROBERTS , Steven BENN , Dong YANG , Eric HODGKINSON , Dominick GUARNA
Abstract: A valve actuation system comprising a valve actuation motion source configured to provide a main event valve actuation motion to at least one engine valve via a main motion load path that comprises at least one valve train component. The valve actuation system further includes a lost motion component arranged within a first valve train component in the main motion load path, the lost motion component being controllable to operate in a motion conveying state or a motion absorbing state. The valve actuation system also comprises a high lift transfer component arranged in the main motion load path, with the high lift transfer component being configured to permit the main motion load path to convey at least a high lift portion of the main event valve actuation motion when the lost motion component is in the motion absorbing state.
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公开(公告)号：US11066964B2
公开(公告)日：2021-07-20
申请号：US16651895
申请日：2018-11-05
Applicant: Camcon Auto Limited
Inventor： David Yates , Richard Tyrrell
Abstract: A linkage for coupling between an actuator and a valve in an engine valve actuation assembly. The linkage provides some compliance in the operation of the linkage to close the valve. The linkage comprises a rocker having a rigid body portion, the body portion including a pivot axis about which it is rotatable, and a link mount for coupling to a valve link arm. The link mount is moveable from a rest position relative to the body portion, and the link mount is urged back towards its rest position when displaced from its rest position relative to the body portion.
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