公开(公告)号：US20210131317A1

公开(公告)日：2021-05-06

申请号：US17129356

申请日：2020-12-21

Applicant: Eaton Intelligent Power Limited

Inventor： Andrei Dan Radulescu ,  Austin Robert Zurface ,  James R. Sheren ,  Anthony L. Spoor ,  Luigi Lia ,  Philip Michael Kline

IPC: F01L13/00 ,  F01L1/18 ,  F01L3/24 ,  F01L3/08 ,  F01L1/24

Abstract: A rocker arm includes an outer arm having a first side and a second side, an inner arm positioned between the first side and the second side of the outer arm, a pivot axle pivotally coupling the inner arm and the outer arm at a first end of each of the inner arm and the outer arm, and a latch having a first position and a second position. The latch in the first position pivotally fixes the inner arm and the outer arm at a second end of each of the inner arm and the outer arm, and in the second position allows the inner arm and the outer arm to pivot independently. The latch is responsive to hydraulic pressure in a hydraulic fluid passage to selectively move to other of the first position and the second position. A lost motion spring is coupled to the inner arm.

公开(公告)号：US20200063609A1

公开(公告)日：2020-02-27

申请号：US16563572

申请日：2019-09-06

Applicant: Eaton Intelligent Power Limited

Inventor： Austin Robert Zurface ,  Tony Eric Gordon ,  Andrei Dan Radulescu ,  Otto Jerome Schultheis

IPC: F01L1/18 ,  F01L13/00

Abstract: A method of precision manufacture of an outer arm of a rocker arm assembly is performed by determining structures of a rough outer arm that would require precision processing and locations to support the structures as they are processed. Starting with at least one structure requiring precision processing, locations on the outer arm close to the structure to hold the outer arm during processing are determined that would cause minimal distortion of the outer arm during processing. The outer arm is then provided with clamping lobes at these locations. The clamping lobes of the outer arm are clamping into a fixture for manufacturing. The slider pad may now be precision ground while the outer arm is clamped in the fixture with minimal risk of distortion of the outer arm.

公开(公告)号：US11788439B2

公开(公告)日：2023-10-17

申请号：US17129356

申请日：2020-12-21

Applicant: Eaton Intelligent Power Limited

Inventor： Andrei Dan Radulescu ,  Austin Robert Zurface ,  James R. Sheren ,  Anthony L. Spoor ,  Luigi Lia ,  Philip Michael Kline

IPC: F01L1/18 ,  F01L13/00 ,  F01L1/24 ,  F01L1/46 ,  F01L1/053

CPC classification number: F01L1/185 ,  F01L1/18 ,  F01L13/0005 ,  F01L13/0015 ,  F01L13/0021 ,  F01L13/0036 ,  F01L1/053 ,  F01L1/2405 ,  F01L2001/0537 ,  F01L2001/186 ,  F01L2001/467 ,  F01L2305/00 ,  F01L2810/02 ,  Y10T74/20882 ,  Y10T74/2107

Abstract: A rocker arm includes an outer arm having a first side and a second side, an inner arm positioned between the first side and the second side of the outer arm, a pivot axle pivotally coupling the inner arm to the outer arm at a first end of the inner arm and a first end of the outer arm, and a latch pin having a first position and a second position. The latch pin in the first position pivotally fixes the inner arm to the outer arm at a second end of each of the inner arm and a second end of the outer arm, and in the second position allows the inner arm and the outer arm to pivot independently. Two lost motion springs are respectively secured to mounts provided on the outer arm.

公开(公告)号：US20240401507A1

公开(公告)日：2024-12-05

申请号：US18802636

申请日：2024-08-13

Applicant: Eaton Intelligent Power Limited

Inventor： Andrei Dan Radulescu ,  Swapnil Jarande ,  Saurabh Patil ,  Jeffrey R. Brown

IPC: F01L1/18 ,  F01L1/26

Abstract: In one embodiment, a retention feature for use in a valvetrain assembly is configured to be attached to a valve bridge and connect the valve bridge with at least one of a rocker arm and a first engine valve of at least two engine valves. The retention feature is further configured to maintain a position of the valve bridge to be aligned with at least two engine valves and resist separation of the valve bridge from at least two engine valves during uncontrolled valve bridge movement. In other embodiments, the valvetrain assembly further includes a mechanical stopper which is disposed on an upper surface of a rocker arm carrier and configured to contact against a lower surface of the rocker arm during uncontrolled valve bridge movement.

公开(公告)号：US11181013B2

公开(公告)日：2021-11-23

申请号：US16121322

申请日：2018-09-04

Applicant: Eaton Intelligent Power Limited

Inventor： David Gerard Genise ,  Andrei Dan Radulescu

IPC: F01L1/18 ,  F01L1/24 ,  F01L13/00 ,  F02F7/00 ,  F01L1/053 ,  F02F1/24 ,  F01L3/08 ,  F01L9/10 ,  F01L9/20 ,  F01L1/46 ,  F01L1/047

Abstract: A novel cylinder head arrangement for an in-line four cylinder or eight cylinder engine. A modified arrangement allows additional space for installation of wider rocker arm assemblies used for variable valve lift (VVL), cylinder deactivation (CDA) and other types of variable valve actuation (VVA). In one embodiment, cam towers adjacent the end two cylinders are not used. At least one end support is used, which may be an outboard bearing on a camshaft for each end. The wider rocker assemblies may then be installed. In another embodiment, cam towers adjacent the inner two cylinders are eliminated and a single camshaft support piece with a support bearing is installed between the inner cylinders to provide support for the camshafts. The wider rocker assemblies may then be installed on at least one of the middle cylinders. A novel oil control valve operates latches in switching rocker arm assemblies.

公开(公告)号：US20210156284A9

公开(公告)日：2021-05-27

申请号：US16121322

申请日：2018-09-04

Applicant: Eaton Intelligent Power Limited

Inventor： David Gerard Genise ,  Andrei Dan Radulescu

IPC: F01L1/24 ,  F01L1/18 ,  F01L13/00 ,  F02F7/00 ,  F01L9/02 ,  F01L1/053 ,  F02F1/24 ,  F01L9/04

Abstract: A novel cylinder head arrangement for an in-line four cylinder or eight cylinder engine. A modified arrangement allows additional space for installation of wider rocker arm assemblies used for variable valve lift (VVL), cylinder deactivation (CDA) and other types of variable valve actuation (VVA). In one embodiment, cam towers adjacent the end two cylinders are not used. At least one end support is used, which may be an outboard bearing on a camshaft for each end. The wider rocker assemblies may then be installed. In another embodiment, cam towers adjacent the inner two cylinders are eliminated and a single camshaft support piece with a support bearing is installed between the inner cylinders to provide support for the camshafts. The wider rocker assemblies may then be installed on at least one of the middle cylinders. A novel oil control valve operates latches in switching rocker arm assemblies.

公开(公告)号：US20210131316A1

公开(公告)日：2021-05-06

申请号：US17129318

申请日：2020-12-21

Applicant: Eaton Intelligent Power Limited

Inventor： Andrei Dan Radulescu ,  Austin Robert Zurface ,  James R. Sheren ,  Anthony L. Spoor ,  Luigi Lia ,  Philip Michael Kline

IPC: F01L13/00 ,  F01L1/18 ,  F01L3/24 ,  F01L3/08 ,  F01L1/24

Abstract: A rocker arm includes an outer arm having a first side and a second side, an inner arm positioned between the first side and the second side of the outer arm, a pivot axle pivotally coupling the inner arm and the outer arm at a first end of each of the inner arm and the outer arm, and a latch having a first position and a second position. The latch in the first position pivotally fixes the inner arm and the outer arm at a second end of each of the inner arm and the outer arm, and in the second position allows the inner arm and the outer arm to pivot independently. The latch is responsive to hydraulic pressure in a hydraulic fluid passage to selectively move to other of the first position and the second position. A lost motion spring is coupled to the inner arm.

公开(公告)号：US10731517B2

公开(公告)日：2020-08-04

申请号：US15877145

申请日：2018-01-22

Applicant: Eaton Intelligent Power Limited

Inventor： Petr Liskar ,  Dale Arden Stretch ,  James Edward McCarthy ,  Nicholas Peter Gillette ,  Andrei Dan Radulescu

IPC: F01L1/18 ,  F01L1/20 ,  F01L1/053 ,  H01F7/02 ,  H01F7/08 ,  F01L13/00 ,  F01L1/24 ,  H01F7/06 ,  H01F7/16 ,  F01L1/46

Abstract: A valvetrain includes a rocker arm assembly having a rocker arm and an electromagnetic latch assembly. A magnet of the latch assembly is housed within a chamber formed by the rocker arm. The chamber may be a retrofit hydraulic chamber. The magnet may be an electromagnet or a permanent magnet. A flux shifting bi-stable latch provides a sufficiently compact design. Isolation of the magnet within the rocker arm chamber may provide protection from metal particles carried by oil in an operating environment for the rocker arm assembly.