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公开(公告)号：US20230151743A1
公开(公告)日：2023-05-18
申请号：US18150622
申请日：2023-01-05
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Austen METSACK , Gabriel S. ROBERTS , Thomas BENNER , Ryan D. LILLY
Abstract: Systems for valve actuation in internal combustion engines provide for control of rocker arms and other valvetrain components by utilizing biasing and stroke limited components. Such features may be implemented in any valvetrain component, including e-foot assemblies or pushrod assemblies. The biasing component may bias the cam side of a lost motion rocker toward the cam. The components may be extendable to permit a biasing mechanism to keep the valvetrain components in a controlled position at all times. Stroke limiting features may facilitate the formation of small gaps between valvetrain components during the engine cycle for improved lubrication. Stroke limiting features may also retain valvetrain components in an assembled configuration even when not installed in an engine or valve actuation system.
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公开(公告)号：US11649739B2
公开(公告)日：2023-05-16
申请号：US17812063
申请日：2022-07-12
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Eric J. Hodgkinson , Timothy P. Neal , Justin D. Baltrucki , G. Michael Gron, Jr.
Abstract: Valve bridge systems include constraints and guides for managing bridge jump and other uncontrolled valve bridge motion during engine operation. Constraints may include an e-foot collar, an extended portion on the bridge, and a bridge brake pin. Guides may include valve stem tip lead-in chamfers surrounding the valve bridge valve pockets as well as a deflection surface on the bridge extended portion. Methods of configuring valve bridges may include configuring the valve step tip lead-in chamfers based on worst-case positions of the valve bridge defined by one or more or a combination of the constraints provided by the e-foot collar, extended portion and brake pin.
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公开(公告)号：US11519307B2
公开(公告)日：2022-12-06
申请号：US17805343
申请日：2022-06-03
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Justin D. Baltrucki
Abstract: A valve actuation system comprises a valve actuation motion source configured to provide a main valve actuation motion and an auxiliary valve actuation motion for actuating at least one engine valve via a valve actuation load path. A lost motion subtracting mechanism is arranged in a pre-rocker arm valve train component and configured, in a first default operating state, to convey at least the main valve actuation motion and configured, in a first activated state, to lose the main valve actuation motion and the auxiliary valve actuation motion. Additionally, a lost motion adding mechanism is arranged in a valve bridge and configured, in a second default operating state, to lose the auxiliary valve actuation motion and configured, in a second activated state, to convey the auxiliary valve actuation motion, wherein the lost motion adding mechanism is in series with the lost motion subtracting mechanism in the valve actuation load path.
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公开(公告)号：US11162437B2
公开(公告)日：2021-11-02
申请号：US17301414
申请日：2021-04-01
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： G. Michael Gron, Jr. , Justin D. Baltrucki
IPC: F01L1/34 , F02D13/04 , F02D13/06 , F01L1/26 , F01L13/06 , F02D13/02 , F01L1/18 , F01L13/08 , F01L13/00
Abstract: A system and associated methods for controlling valve motion in internal combustion engines provide a pulsing component for energizing a solenoid control valve in pulsatile fashion to cause a transient pressure change in a hydraulic network linking the control valve to a common, paired set of intake and exhaust main event deactivation mechanisms, which may be provided in respective valve bridges. The pressure change results in hydraulic deactivation of main event motion of the exhaust valve while avoiding deactivation of main intake event motion and thereby preserving intake main event valve motion, and supporting use of the intake main event motion for additional braking or other operations. The systems and methods are particularly suited for engine environments that employ cylinder deactivation (CDA) combined with high-power density (HPD) engine braking.
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公开(公告)号：US11156135B2
公开(公告)日：2021-10-26
申请号：US16513608
申请日：2019-07-16
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Justin D. Baltrucki , David M. Ferreira
Abstract: A combined dedicated braking and EEVO lost motion valve actuation systems for internal combustion engines provide subsystems for braking events and EEVO events on one or more cylinders. Various control strategies may utilize braking and EEVO capabilities to module one or more engine parameters, including aftertreatment temperature and engine load.
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Patent Agency Ranking
公开(公告)号：US20210025341A1
公开(公告)日：2021-01-28
申请号：US16947239
申请日：2020-07-24
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Justin D. BALTRUCKI
Abstract: In an embodiment, an internal combustion engine comprises a plurality of cylinders, each of the plurality of cylinders comprising at least one intake deactivator operatively connected to at least one intake valve and at least one exhaust deactivator operatively connected to at least one exhaust. An intake deactivator controller is operatively connected to the intake deactivators associated with at least two cylinders of the plurality of cylinders, and an exhaust deactivator controller is operatively connected to the exhaust deactivators associated with the at least two cylinders. In another embodiment, only a single deactivator controller is operatively connected to both the intake deactivators and to the exhaust deactivators associated with the at least two cylinders of the plurality of cylinders.
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公开(公告)号：US20200291826A1
公开(公告)日：2020-09-17
申请号：US15929899
申请日：2020-05-28
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： John MANDELL , Gabriel S. ROBERTS , Robb JANAK
Abstract: A switching finger may operate in two or three states or positions and cooperate with a single motion source to achieve methods of operating an engine in corresponding two or three modes. The modes may include cylinder deactivation, main event or auxiliary modes, including lost motion braking, LIVC and EEVO. A follower for an engine valve train utilizes an adjustable support assembly that eliminates potential for partial engagement during operation. A lever engagement member or latch is disposed for movement on the follower body and interacts with a lever to provide a constant contact geometry. The latch may support the lever in one or more precise positions, or permit the lever to pivot free of the latch for complete lost motion, as in cylinder deactivation applications.
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公开(公告)号：US10329969B2
公开(公告)日：2019-06-25
申请号：US15522529
申请日：2015-10-23
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Roger T. Simpson , Jacob M. Moore , Alan Steines , John A. Schwoerer
Abstract: A system that provides adjustable actuation timing of one or more valve(s) (16) in a piston engine includes a position sensor (12) and a variable valve actuation assembly (10). The valve(s) (16) can be intake and/or exhaust valves in an internal combustion engine of an automobile. The position sensor (12) takes position readings of the valve(s) (16) as the valve(s) (16) actuate in the piston engine. The variable valve actuation assembly (10) controls actuation timing of the valve(s) (16). Actuation timing of the valve(s) (16) is adjustable based, in part or more, upon one or more position reading(s) of the position sensor (12). The variable valve actuation assembly (10) can be a lost motion assembly (10).
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69.发明授权公开(公告)号：US09739184B2
公开(公告)日：2017-08-22
申请号：US15184904
申请日：2016-06-16
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： G. Michael Gron, Jr. , Justin Damien Baltrucki , Neil Fuchs , John J. Lester
CPC classification number: F01L13/08 , F01L1/181 , F01L13/0015 , F01L13/06 , F01L2001/186 , F01L2013/0094 , F01L2760/001 , F01L2800/01 , F01L2800/03 , F01L2810/03 , F01L2820/031 , F01L2820/034 , F02D13/0246 , F02D2013/0292 , F02M31/042 , Y02T10/126
Abstract: Start-up of an internal combustion engine comprises maintaining one or more engine valves in an engine cylinder in a continuously open state for more than one engine cycle during engine cranking. When it is determined that an engine parameter or transmission oil pressure has reached a predetermined value, maintenance of the one or more engine valves in the continuously open state is discontinued and fuel is subsequently provided to the engine cylinder for engine start-up. In various embodiments, the engine parameter may comprise an engine temperature parameter, an engine pressure parameter or an engine electrical parameter.
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公开(公告)号：US20170107915A1
公开(公告)日：2017-04-20
申请号：US15390512
申请日：2016-12-25
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Ryan LILLY
Abstract: A controller of an internal combustion engine receives a request to activate an exhaust brake subsystem and, in response thereto, activates the exhaust braking subsystem. The controller thereafter determines that at least one parameter of the exhaust system, an intake subsystem or both compares unfavorably with at least one threshold. When the at least one parameter compares unfavorably with the at least one threshold, the controller determines that the exhaust braking subsystem has failed. In embodiments, the determination that the at least one parameter compares unfavorably with the at least one threshold comprises a determination that backpressure in the exhaust system is lower than a backpressure threshold and/or a determination that boost pressure in the intake subsystem is higher than a threshold.
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