公开(公告)号：US20230024930A1

公开(公告)日：2023-01-26

申请号：US17960473

申请日：2022-10-05

Applicant: Eaton Intelligent Power Limited

Inventor： Alessio LORENZON ,  Egidio CANZONIERE

IPC: F01L1/18 ,  F01L1/46

Abstract: A switching roller finger follower (SRFF) assembly for valve actuation includes an outer arm and an inner arm pivotally coupled to the outer arm via a pivot axle and at least partially disposed within the outer arm. The inner arm is unitarily formed and has a first inner side arm and a second inner side arm having respective laterally spaced apart longitudinal bends that each define pin apertures. A spring engagement pin extends through the pin apertures, a pair of lost motion springs are supported by the pivot axle, an inner roller is rotatably coupled to the inner arm, and a pair of outer rollers are disposed on respective axles supported by the outer arm.

公开(公告)号：US20200308993A1

公开(公告)日：2020-10-01

申请号：US16300593

申请日：2017-04-21

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： Nicola ANDRISANI ,  Emanuele RAIMONDI ,  Alessio LORENZON

IPC: F01L1/18 ,  F01L1/46

Abstract: A rocker arm for a valve train assembly includes: a first body; a second body mounted for pivotal movement with respect to the first body; and a latching arrangement. The latching arrangement includes a latch pin drivable in response to an external actuator from a first position in which the first body and the second body are un-latched to a second position in which the latch pin latches the first body and the second body together. The latching arrangement includes a piston member and a first biasing member. The piston member is arranged such that if the external actuator attempts to cause the latch pin to be driven from the first position to the second position at a time when the latch pin is prevented from being driven, the piston member moves to bias the biasing member so that the biasing member urges the latch pin to the second position.

公开(公告)号：US20210189917A1

公开(公告)日：2021-06-24

申请号：US16492176

申请日：2017-10-24

Applicant: Eaton Intelligent Power Limited

Inventor： Alessio LORENZON ,  Emanuele RAIMONDI ,  Nicola ANDRISANI

IPC: F01L1/18 ,  F01L1/047 ,  F01L13/00

Abstract: A valve train assembly includes: at least one dual body rocker arm having a first body, a second body, and a latching arrangement for latching and unlatching the first body and the second body, the latching arrangement being biased to an unlatched configuration; and an actuator arrangement external to the rocker arm for controlling the latching arrangement, the actuator arrangement being arranged so that a default setting thereof is to cause the latching arrangement to be in a latched configuration.

公开(公告)号：US20200040775A1

公开(公告)日：2020-02-06

申请号：US16492173

申请日：2017-10-24

Applicant: Eaton Intelligent Power Limited

Inventor： Emanuele RAIMONDI ,  Nicola ANDRISANI ,  Alessio LORENZON

IPC: F01L1/18 ,  F01L1/047 ,  F01L1/46 ,  F01L13/00 ,  F01L13/06

Abstract: A valve train assembly includes: at least one dual body rocker arm having a first body, a second body, a latching arrangement for latching and unlatching the first body and the second body, the latching arrangement having a latching pin that is biased to an unlatched configuration; and an actuator arrangement for controlling the latching arrangement, the actuator arrangement being able to contact the latching arrangement to cause the latching pin to be moved into a latched configuration in which it latches the first and second bodies together. In use, movement of the rocker arm under action of a cam to cause a valve event moves the actuator arrangement out of contact with the latching arrangement while a contact force between the latching pin and one or other of the first and second bodies maintains the latching pin in the latched configuration.