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公开(公告)号：US20230383676A1
公开(公告)日：2023-11-30
申请号：US18249720
申请日：2021-05-07
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Gabriel S. ROBERTS , Marc SILVA , Dong YANG
CPC classification number: F01L13/065 , F01L1/181 , F01L2001/467
Abstract: Systems for valve actuation in internal combustion engines provide rocker control components in the form of biasing mechanisms for biasing the valve side of a lost motion rocker toward the engine valves. This may prevent gaps in the valvetrain, particularly when used with cams having sub-base circle auxiliary motion event profiles. Valvetrain components, such as an e-foot engaging a valve bridge, may be provided with a biasing mechanism and stroke limiting and retaining components to maintain engagement between the e-foot and valve bridge, to control stability of the valve bridge, and to make assembly/disassembly easier.
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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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3.发明申请公开(公告)号：US20210340886A1
公开(公告)日：2021-11-04
申请号：US17305637
申请日：2021-07-12
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： John MANDELL , Justin D. BALTRUCKI , Gabriel S. ROBERTS , Robb JANAK
Abstract: A switching finger 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 finger follower may be configured as a lost motion device and may include a biasing assembly and a travel limiter. The latch may support the lever in at least one precise position and may support the lever in a second position for partial lost motion, 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：US20240280037A1
公开(公告)日：2024-08-22
申请号：US18542631
申请日：2023-12-16
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Matei ALEXANDRU , Tyler HINES , Gabriel S. ROBERTS , Austen P. METSACK
CPC classification number: F01L13/0036 , F01L1/181 , F01L1/267 , F01L1/46 , F01L2001/186 , F01L1/2411 , F01L2001/467
Abstract: A system for actuating at least one engine valve comprises an output rocker operatively connected to the at least one engine valve. A first rocker assembly is operatively connected to a first valve actuation motion source. The first rocker assembly comprises a first input rocker arranged in series with a first lost motion component, wherein the first input receives first valve actuation motions from the first valve actuation motion source and the first lost motion component is operatively connected to the output rocker. A second rocker assembly is operatively connected to a second valve actuation motion source. The second rocker assembly comprises a second input rocker arranged in series with a second lost motion component, wherein the second input rocker receives second valve actuation motions from the second valve actuation motion source and the second lost motion component is operatively connected to the output rocker.
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公开(公告)号：US20240280036A1
公开(公告)日：2024-08-22
申请号：US18444711
申请日：2024-02-18
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Austen P. METSACK , Gabriel S. ROBERTS , John MANDELL
CPC classification number: F01L1/181 , F01L1/2411 , F01L2305/00 , F01L2820/033
Abstract: A rocker arm comprises a hydraulic actuator piston slidably disposed in an actuator bore. An actuator spring is configured to bias the hydraulic actuator piston out of actuator bore and into contact with a valve train component or at least one engine valve, wherein reaction of the hydraulic actuator piston against the valve train component or the at least one engine valve biases a motion receiving portion of the rocker arm into contact with the valve actuation motion source. In an unactuated state of the hydraulic actuator piston, hydraulic fluid is permitted to flow out of the actuator bore and, in an actuated state of the hydraulic actuator piston, hydraulic fluid is locked in the actuator bore.
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Patent Agency Ranking
公开(公告)号：US20200182097A1
公开(公告)日：2020-06-11
申请号：US16706701
申请日：2019-12-07
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Matei ALEXANDRU , Justin D. BALTRUCKI , Gabriel S. ROBERTS
Abstract: A valve actuation system for actuating at least one engine valve comprises a first half-rocker arm configured to receive main valve actuation motions from a main valve actuation motion source and a second rocker arm configured to actuate the at least one engine valve. A collapsing mechanism is also provided and configured relative to the first half-rocker arm and the second rocker arm, in a first collapsing mechanism state, to convey the main valve actuation motions from the first half-rocker arm to the second rocker arm and, in a second collapsing mechanism state, to prevent conveyance of the main valve actuation motions from the first half-rocker arm to the second rocker arm. The collapsing mechanism may be disposed in the first half-rocker arm or the second rocker arm, where the rocker arm not including the collapsing mechanism is provided with a collapsing mechanism contact surface.
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公开(公告)号：US20190264584A1
公开(公告)日：2019-08-29
申请号：US16409614
申请日：2019-05-10
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Justin D. BALTRUCKI , Gabriel S. ROBERTS , Matei ALEXANDRU , John MANDELL
Abstract: Systems for valve actuation in internal combustion engines provide configurations for hydraulic lash adjusters and valve actuation valvetrain components that are particularly suitable for prevention of HLA jacking in dedicated cam environments including Type II valvetrain architectures. In one implementation, a lash adjuster loading component, which may comprise a stroke-limited spring biased piston associated with the main event valvetrain keeps the lash adjuster under a constant compressive force to prevent jacking.
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公开(公告)号：US20240287920A1
公开(公告)日：2024-08-29
申请号：US18589518
申请日：2024-02-28
Applicant: Jacobs Vehicle Systems, Inc.
Inventor： Austen P. METSACK , Gabriel S. ROBERTS
CPC classification number: F01L1/2416 , F01L1/182 , F01L1/26 , F01L2001/2444
Abstract: A rocker arm comprises an actuator piston slidably disposed in an actuator piston bore formed in a motion imparting end thereof. A lash adjustment assembly is disposed in the motion imparting end and comprises an internal bore. A hydraulic passage is in fluid communication with the actuator piston bore and the internal bore. A resetting assembly is disposed in the lash adjustment assembly and comprises a reset slider and a checking element in fluid communication with the internal bore. The reset slider is slidably disposed in the internal bore and has a first end configured to engage a valve train component or engine valve, and has a second end with a resetting pin disposed thereon configured to contact and place the checking element in an unchecked state in response to positioning of the rocker arm when the first end contacts the valve train component or engine valve.
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公开(公告)号：US20240125253A1
公开(公告)日：2024-04-18
申请号：US18484053
申请日：2023-10-10
Applicant: Cummins Inc. , JACOBS VEHICLE SYSTEMS, INC.
Inventor： Bruce A. SWANBON , Justin D. BALTRUCKI , Robb JANAK , G. Michael GRON, JR. , John MANDELL , Marc B. SILVA , Tyler HINES , Matei ALEXANDRU , Austen P. METSACK , Gabriel S. ROBERTS , P. Douglas AUBIN , Nathaniel P. HASSALL , John Jerl PURCELL, III , Adam C. CECIL , David M. BARNES
Abstract: A valve actuation system comprises a first arm having a first arm contact surface and operatively connected to a valve actuation motion. A second arm having a second arm contact surface is operatively connected to the at least one engine valve. A discrete lost motion device is provided that is controllable between a first, motion conveying state and a second, motion absorbing state. The discrete lost motion devices comprises a plunger contact surface and a housing contact surface. The housing contact surface is configured to engage one of the first or second arm contact surfaces, and the plunger contact surface is configured to engage another of the first and the second arm contact surfaces. The first and second arm contact surfaces, the housing contact surface and the first plunger contact surface are configured to support the discrete lost motion device between the first arm and the second arm.
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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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