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

IPC: F01L9/10 ,  F01L1/18

CPC classification number: F01L9/10 ,  F01L1/181

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.

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

IPC: F02D13/06 ,  F02D13/02 ,  F02D41/00

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.

公开(公告)号：US20240200476A1

公开(公告)日：2024-06-20

申请号：US18540611

申请日：2023-12-14

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Matei ALEXANDRU ,  John MANDELL ,  Tyler HINES ,  Justin D. BALTRUCKI ,  Gabriel S. ROBERTS ,  Bruce A. SWANBON ,  Robb JANAK ,  G. Michael GRON, JR. ,  Marc B. SILVA ,  Austen P. METSACK

IPC: F01L1/24 ,  F01L1/18 ,  F01L1/26 ,  F01L1/46

CPC classification number: F01L1/24 ,  F01L1/181 ,  F01L1/26 ,  F01L1/46 ,  F01L2001/2444 ,  F01L2001/467

Abstract: A system for actuating at least two engine valves comprises a first rocker assembly operatively connected to a first valve actuation motion source and to a first engine valve. The first rocker assembly comprises a first lost motion component arranged in series with a first input rocker and a first output rocker. A second rocker assembly is operatively connected to a second valve actuation motion source and to a second engine valve. The second rocker assembly comprises at least one second rocker. The system further comprises a one-way coupling mechanism disposed between the first output rocker and the at least one second rocker such that second valve actuation motions are transferred from the at least one second rocker to the first output rocker, and first valve actuation motions are not transferred from the first output rocker to the at least one second rocker.

公开(公告)号：US20230007897A1

公开(公告)日：2023-01-12

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.

IPC: F01L1/26

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.

公开(公告)号：US20200088073A1

公开(公告)日：2020-03-19

申请号：US16573660

申请日：2019-09-17

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Justin D. BALTRUCKI ,  Trevor MORRISSEY

IPC: F01L9/02 ,  F01L1/18 ,  F01L13/00 ,  F01L13/06

Abstract: Hydraulic systems in an engine valvetrain having lost motion and/or braking hydraulic circuits are provided with a conditioning circuit that may include a supplemental supply passage, which provides continuous and supplemental supply of hydraulic fluid from a supply source to the braking and lost motion circuits, as well as a venting of the circuits to ambient, such that the hydraulic fluid in these circuits is kept in a refreshed and conditioned state without air contamination. A vented three-way solenoid valve may be utilized. The supplemental supply passage may be provided at various locations in the valvetrain and in the engine head environment. The supplemental supply passage may include flow and pressure control devices to control the flow of the supplemental supply of hydraulic fluid.

公开(公告)号：US20200003085A1

公开(公告)日：2020-01-02

申请号：US16455248

申请日：2019-06-27

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Justin D. BALTRUCKI

IPC: F01L1/26 ,  F01L13/00

Abstract: Systems for valve actuation in internal combustion engines provide configurations for collapsing valve train components, particularly collapsing valve bridges. Various configurations for locking a bridge piston to a bridge housing include substantially cylindrical locking pins that may be housed within a substantially cylindrical receptacles defined by a transverse bore in the bridge piston and actuated hydraulically and may include an actuating pin that interacts with the locking pins to synchronize motion and provide positive positioning within an annular recess in the bridge housing to lock or unlock the bridge piston for movement relative to the bridge housing. Various geometries for locking pins and actuating pins provide benefits of manufacturing, ease of assembly, alignment and reduced wear.

公开(公告)号：US20240175403A1

公开(公告)日：2024-05-30

申请号：US18524380

申请日：2023-11-30

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Robb JANAK ,  Justin D. BALTRUCKI ,  Bruce A. SWANBON ,  Eric J. HODGKINSON

IPC: F02D41/04 ,  F01L9/10 ,  F01L9/40 ,  F01L13/00 ,  F02D13/02 ,  F02D13/06 ,  F02D41/00

CPC classification number: F02D41/042 ,  F01L9/10 ,  F01L9/40 ,  F01L13/0005 ,  F02D13/0203 ,  F02D13/06 ,  F02D41/0087 ,  F01L2009/4094

Abstract: Control of engine shutdown of an internal combustion engine comprising a plurality of cylinders and, for each of the plurality of cylinders, a hydraulically controlled lost motion component operatively connected to an engine valve corresponding to the cylinder, is achieved when an engine controller determines that shutdown of the internal combustion engine has been requested. Responsive to the request for shutdown, the engine controller initiates or continues cylinder deactivation operation for each of at least one cylinder of the plurality of cylinders. The initiation or continuation of the cylinder deactivation operation for each of the at least one cylinder comprises, for an input to the hydraulically controlled lost motion component for each of at least one engine valve corresponding to the cylinder, operating the input to provide the cylinder deactivation operation for a duration at least long enough to complete shutdown of the internal combustion engine.

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

IPC: F01L1/18 ,  F01L13/06 ,  F02M26/52 ,  F02D13/02

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.

公开(公告)号：US20210040902A1

公开(公告)日：2021-02-11

申请号：US16947505

申请日：2020-08-04

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Justin D. BALTRUCKI

IPC: F02D13/06 ,  F02D13/02

Abstract: An internal combustion engine comprises a plurality of cylinders, including at least one de-activatable cylinder having at least one deactivator assembly operatively connected to the at least one valve train for the de-activatable cylinder. In such an internal combustion engine, a method for actuating engine valves comprises operating at least one cylinder of the plurality of cylinders to provide positive power generation according to the main valve actuations and, additionally, placing the at least one deactivator assembly for a de-activatable cylinder of the at least one de-activatable cylinder in a deactivation state. While the at least one deactivator assembly for the de-activatable cylinder is in the deactivation state and while the at least one cylinder is operating to provide positive power generation according to main valve actuations, the method further comprises performing at least one secondary valve event via at least one engine valve for the de-activatable cylinder.

公开(公告)号：US20200224561A1

公开(公告)日：2020-07-16

申请号：US16743183

申请日：2020-01-15

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Justin D. BALTRUCKI

IPC: F01L1/24 ,  F01L9/02

Abstract: Systems and related methods include a rocker arm having integrated components, including a lost motion actuator piston and components for resetting the lost motion actuator piston to provide normal valve closing or late valve closing. Selective reset is facilitated by a reset piston and a blocking piston disposed in a hydraulic circuit including a reset passage. In a non-resetting mode of operation, the blocking piston may block oil flow within the reset passage, regardless of the position of the reset piston, which facilitates late valve closing. An alternative embodiment includes a blocking sleeve disposed concentrically relative to the reset piston.