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：US11905860B2

公开(公告)日：2024-02-20

申请号：US17778514

申请日：2020-11-20

Applicant: Eaton Intelligent Power Limited

Inventor： Jeffrey R. Brown ,  Matthew A. Vance

IPC: F01L1/18 ,  F01L1/24 ,  F01L1/34

CPC classification number: F01L1/185 ,  F01L1/2416 ,  F01L1/34

Abstract: A latch assembly comprises a latch pin and a cage. The latch pin comprises a latch nose and a pin body. The pin body comprises an outer surface and an inner compartment. The inner compartment comprises a first inner wall segmented by a first slot and a second inner wall segmented by a second slot. The first slot and the second slot vent out of the inner compartment. The cage comprises a stepped base and a shaft extending from the stepped base into the inner compartment. The shaft comprises a first exterior flat adjoining the first inner wall and a second exterior flat adjoining the second inner wall. A spring can be biased against the latch pin and the cage. The latch assembly can be used in a latching device of a valvetrain such as a switching roller finger follower or other rocker arm.

公开(公告)号：US20220412232A1

公开(公告)日：2022-12-29

申请号：US17778514

申请日：2020-11-20

Applicant: Eaton Intelligent Power Limited

Inventor： Jeffrey R. Brown ,  Matthew A. Vance

IPC: F01L1/18 ,  F01L1/34 ,  F01L1/24

Abstract: A latch assembly comprises a latch pin and a cage. The latch pin comprises a latch nose and a pin body. The pin body comprises an outer surface and an inner compartment. The inner compartment comprises a first inner wall segmented by a first slot and a second inner wall segmented by a second slot. The first slot and the second slot vent out of the inner compartment. The cage comprises a stepped base and a shaft extending from the stepped base into the inner compartment. The shaft comprises a first exterior flat adjoining the first inner wall and a second exterior flat adjoining the second inner wall. A spring can be biased against the latch pin and the cage. The latch assembly can be used in a latching device of a valvetrain such as a switching roller finger follower or other rocker arm.

公开(公告)号：US12037929B2

公开(公告)日：2024-07-16

申请号：US17613667

申请日：2020-05-22

Applicant: Eaton Intelligent Power Limited

Inventor： Emanuele Raimondi ,  Massimo D'Amore ,  Jeffrey R. Brown ,  Ramy Rezkalla ,  Matthew A. Vance ,  Andrei D. Radulescu ,  Brandon J. Elliott

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

CPC classification number: F01L1/185 ,  F01L13/0005 ,  F01L13/0036 ,  F01L2001/186 ,  F01L1/46 ,  F01L2001/467 ,  F01L2013/001 ,  F01L2301/00 ,  F01L2303/00 ,  F01L2305/02

Abstract: A switching roller finger follower (SRFF) for valve actuation includes an outer arm (16), a first inner arm (12), a bearing axle (50) and a latch pin (26). The outer arm (16) is formed of a metal stamping, and is pivotally coupled to a main axle (40). The first inner arm (12) is coupled to the main axle (40) and is pivotably secure to the outer arm. The bearing axle (50) extends through the outer arm and the first inner arm. The bearing axle supports a roller (20) thereon. The latch pin (26) is slidably disposed in the outer arm (16) and is movable between at least a first position where the outer arm (16) and the first inner arm (12) are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.

公开(公告)号：US20220228516A1

公开(公告)日：2022-07-21

申请号：US17613667

申请日：2020-05-22

Applicant: Eaton Intelligent Power Limited

Inventor： Emanuele Raimondi ,  Massimo D'Amore ,  Jeffrey R. Brown ,  Ramy Rezkalla ,  Matthew A. Vance ,  Andrei D. Radulescu ,  Brandon J. Elliott

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

Abstract: A switching roller finger follower (SRFF) for valve actuation includes an outer arm (16), a first inner arm (12), a bearing axle (50) and a latch pin (26). The outer arm (16) is formed of a metal stamping, and is pivotally coupled to a main axle (40). The first inner arm (12) is coupled to the main axle (40) and is pivotably secure to the outer arm. The bearing axle (50) extends through the outer arm and the first inner arm. The bearing axle supports a roller (20) thereon. The latch pin (26) is slidably disposed in the outer arm (16) and is movable between at least a first position where the outer arm (16) and the first inner arm (12) are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.