公开(公告)号：US12188385B2

公开(公告)日：2025-01-07

申请号：US18557150

申请日：2022-04-26

Applicant: Eaton Intelligent Power Limited

Inventor： Long Wang ,  Nicola Andrisani

IPC: F01L1/26 ,  F01L1/053 ,  F01L1/18 ,  F01L1/22 ,  F01L1/46 ,  F01L13/06 ,  F01L1/24

Abstract: A combined exhaust and engine brake rocker arm assembly (20) configured to selectively open first and second exhaust valves (26, 28) includes a rocker arm body (40), an exhaust rocker arm assembly (16) formed in the rocker arm body (40), and a lost motion spigot assembly (56) including an adjustment nut (70) and guide (62) configured to receive a shaft assembly (60) for adjusting a lash of the lost motion spigot assembly (56). The shaft assembly is disposed within a bore (92) of the adjustment nut below an upper surface thereof, and an engine brake rocker arm assembly (18) is formed in the rocker arm body (40) and configured to operate in a collapse mode and a rigid mode. The lost motion spigot assembly (56) is configured to selectively engage a valve bridge (52) to open the first and second exhaust valves (26, 28), and the engine brake rocker arm assembly (18) is configured to selectively engage the valve bridge (52) to open only the first exhaust valve (26).

公开(公告)号：US12049835B2

公开(公告)日：2024-07-30

申请号：US17998405

申请日：2021-05-13

Applicant: Eaton Intelligent Power Limited

Inventor： Marco Aimo Boot ,  Matteo Raffaele Costantini ,  Luigi Lia ,  Piero Parmeggiani

IPC: F01L1/20 ,  F01L1/22 ,  F01L1/24

CPC classification number: F01L1/20 ,  F01L1/205 ,  F01L1/22 ,  F01L1/2405

Abstract: A lash adjuster can include a hydraulic lash assembly, a mechanical lash assembly, and a check assembly. The hydraulic lash assembly can include a body, a top plunger, a leak down plunger, and the check assembly between the body and the leak down plunger. The mechanical lash assembly can be between the top plunger and the leak down plunger. The mechanical lash assembly can include a shim abutting the top plunger, a spacer, and a spring pressing against the spacer and the shim to form a gap between the top plunger and the leak down plunger. The lash adjuster can include the spring pressing directly against the spacer and directly or indirectly against the shim.

公开(公告)号：US20230235687A1

公开(公告)日：2023-07-27

申请号：US18130087

申请日：2023-04-03

Applicant: Pacbrake Company

Inventor： Kody TAYLOR ,  James BALDWIN ,  Peter STEC

IPC: F01L13/06 ,  F01L9/10 ,  F01L9/40 ,  F01L1/18 ,  F01L1/22 ,  F01L1/26 ,  F01L1/46 ,  F02D13/04 ,  F01L1/24

CPC classification number: F01L13/065 ,  F01L9/10 ,  F01L9/40 ,  F01L1/18 ,  F01L1/22 ,  F01L1/26 ,  F01L1/462 ,  F02D13/04 ,  F01L1/181 ,  F01L1/267 ,  F01L13/06 ,  F01L1/2411 ,  F01L2001/467 ,  F01L2001/2444

Abstract: A compression-release engine brake system operating an exhaust valve of an engine during a compression-release engine braking operation. The compression-release brake system comprises an exhaust rocker arm and a brake reset device disposed in a reset bore formed in the exhaust rocker arm. The brake reset device comprises a reset check valve, a slider-piston slidably disposed in the reset bore and an external slider bias spring biasing the piston foot away from the brake reset device. The external slider bias spring is disposed outside the reset bore and around the piston-slider. The brake reset device permits pressurized hydraulic fluid to flow from a supply conduit to a reset conduit to supply a brake actuation piston when the reset check valve is open. The actuation piston extends and engages the exhaust valve toward the end of a compression stroke of the internal combustion engine, and the brake reset device resets.

公开(公告)号：US20220307392A1

公开(公告)日：2022-09-29

申请号：US17703361

申请日：2022-03-24

Applicant: Pacbrake Company

Inventor： Kody TAYLOR ,  James BALDWIN ,  Peter STEC

IPC: F01L13/06 ,  F01L1/46 ,  F01L1/18 ,  F01L1/26 ,  F01L9/10 ,  F01L9/40 ,  F01L1/22 ,  F02D13/04

Abstract: A compression-release engine brake system operating an exhaust valve of an engine during a compression-release engine braking operation. The compression-release brake system comprises an exhaust rocker arm and a brake reset device disposed in a reset bore formed in the exhaust rocker arm. The brake reset device comprises a reset check valve, a slider-piston slidably disposed in the reset bore and an external slider bias spring biasing the piston foot away from the brake reset device. The external slider bias spring is disposed outside the reset bore and around the piston-slider. The brake reset device permits pressurized hydraulic fluid to flow from a supply conduit to a reset conduit to supply a brake actuation piston when the reset check valve is open. The actuation piston extends and engages the exhaust valve toward the end of a compression stroke of the internal combustion engine, and the brake reset device resets.

公开(公告)号：US20210324767A1

公开(公告)日：2021-10-21

申请号：US17258909

申请日：2019-06-11

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Andreas Biermann ,  Benedikt Noe ,  Martin Steigerwald ,  Michael Pribek ,  Frank Himsel

IPC: F01L1/18 ,  F01L1/22

Abstract: A preassembled module for a variable-lift valve drive of an internal combustion engine is provided for installation into a cylinder head. The module has a base plate with an electric linear actuator which lies on an upper side of the base plate. A guide plate, which lies on the upper side, has an outer side wall arranged to guide a slide piece. The guide piece extends below the base plate two downwardly pointing actuating fingers. Each respective actuating finger has a contact surface for moving a transverse coupling slide of a switchable rocker arm. The slide piece has a bracket which protrudes over the guide plate with a contact landing arm which runs transversely relative to the electric linear actuator. An actuator-side end of the contact landing arm is in contact with an actuating pin of the electric linear actuator to move the slide piece.

公开(公告)号：US10605126B2

公开(公告)日：2020-03-31

申请号：US15955215

申请日：2018-04-17

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： Robert M. Mariuz ,  Kevin R. Keegan ,  Hermes A. Fernandez

IPC: F01L1/22 ,  F01L13/00 ,  F01L1/18 ,  F01L1/047

Abstract: A rocker arm includes an outer arm defining a lock pin bore which is centered about a lock pin bore axis and an inner arm which selectively pivots relative to the outer arm about a pivot axis which is parallel to the lock pin bore axis. The inner arm includes a protrusion which defines an inner arm stop surface which is planar. A lock pin is disposed within the lock pin bore, the lock pin having a lock pin slot extending thereinto and also having a lock pin stop surface which is planar. The lock pin is displaced within the lock pin bore between a coupled position in which the lock pin stop surface is aligned with the inner arm stop surface and a decoupled position in which the lock pin slot is aligned with the protrusion.

公开(公告)号：US20190048761A1

公开(公告)日：2019-02-14

申请号：US15713028

申请日：2017-09-22

Applicant: MOTONIC CORPORATION

Inventor： Wan Jae JEON ,  Soo Hyun HWANG ,  Jong Wung PARK ,  Jun Min PARK ,  Chan Wung PARK ,  Dong Hyeong LEE

IPC: F01L1/22 ,  F01L1/18 ,  F02D13/06 ,  F01L9/04

CPC classification number: F01L1/22 ,  F01L1/18 ,  F01L1/181 ,  F01L1/267 ,  F01L9/04 ,  F01L13/0005 ,  F01L13/0036 ,  F01L2001/186 ,  F01L2013/001 ,  F01L2105/00 ,  F02D13/06

Abstract: Provided is a variable valve lift actuator of an engine, which includes: a first body rotating; a second body; a driving module; and a return spring, wherein an entire portion or a partial front end of the driving module is inserted into a rear end of the second body, the lift degree of the valve is variably controlled in two stages of a high-speed mode and a low-speed mode based on an operating condition of the engine, and when only the high-speed cam is installed on the camshaft, the driving pin is operated in a low-speed and low-load state of the engine to separate the first body from the second body so as to deactivate a cylinder.

公开(公告)号：US20180274403A1

公开(公告)日：2018-09-27

申请号：US15936375

申请日：2018-03-26

Applicant: Mahle International GmbH

Inventor： Patrick Altherr ,  Thorsten Ihne ,  Markus Walch

IPC: F01L13/00 ,  F01L1/047 ,  F01L1/22

CPC classification number: F01L13/0005 ,  F01L1/024 ,  F01L1/026 ,  F01L1/04 ,  F01L1/047 ,  F01L1/053 ,  F01L1/12 ,  F01L1/181 ,  F01L1/22 ,  F01L1/267 ,  F01L13/00 ,  F01L13/0036 ,  F01L2013/001 ,  F01L2013/0052 ,  F01L2013/10 ,  F01L2105/00

Abstract: A valve drive for an internal combustion engine may include a cam shaft, at least one cam follower, at least one adjusting device, and at least one control shaft. The cam shaft may include at least one cam group that may include a first cam and a second cam The at least one adjusting device may include a first adjustable engagement element and a second adjustable engagement element. The at least one control shaft may include at least one control cam group that may include a first control cam and a second control cam. The first control cam may include a cam lobe corresponding to the first engagement element and the second control cam may include a cam lobe corresponding to the second engagement element. The at least one control shaft may be rotatable about a longitudinal axis between a starting position and a rotational position.

公开(公告)号：US20180266282A1

公开(公告)日：2018-09-20

申请号：US15462091

申请日：2017-03-17

Applicant: Schaeffler Technologies AG & Co. KG

Inventor： Sumukha Nagaraj

IPC: F01L1/22 ,  F01L1/047 ,  F01L1/18 ,  F01L1/46

Abstract: A switchable rocker arm is provided having first and second arms. The first arm has a first outer end and a first inner end and the second arm has a second outer end a second inner end, with the first and second outer ends contacting a respective one of a cam or a valve. One of the first and second inner ends includes an opening with a ring gear and the other includes at least one support for a planet gear that engages the ring gear. A sun gear is located on a rocker shaft and engages the planet gear. A locking mechanism is switchable from a locked position, in which the sun gear is rotationally fixed to the rocker shaft to transfer a cam lift to the valve via the gear ratio provided in the sun, planet, and ring gear arrangement, and a release position, in which the sun gear is rotatable on the rocker shaft so no cam lift is transferred.

公开(公告)号：US09765705B2

公开(公告)日：2017-09-19

申请号：US14950275

申请日：2015-11-24

Applicant: John R Bucknell ,  Aymail Ismail ,  Ethan E Bayer ,  Drushan Mavalankar

Inventor： John R Bucknell ,  Aymail Ismail ,  Ethan E Bayer ,  Drushan Mavalankar

IPC: F02D13/02 ,  F01L1/22

CPC classification number: F02D13/02 ,  F01L1/18 ,  F01L1/22 ,  F01L1/344 ,  F01L13/0036 ,  F01L2001/186 ,  F01L2800/10 ,  F01L2800/14 ,  F01L2820/043 ,  F02D13/0207 ,  F02D2041/001 ,  F02D2041/002 ,  F02D2200/0406 ,  F02D2200/0411 ,  F02D2250/21 ,  F02D2250/22 ,  F02M26/48 ,  Y02T10/18

Abstract: A control technique for an engine having a two-step variable valve lift system includes a controller receiving a pressure in an intake manifold of the engine from a manifold absolute pressure (MAP) sensor and a position of an EGR valve of the engine from an exhaust gas recirculation (EGR) sensor. In response to the controller detecting an upcoming HL-to-LL valve state transition, a set of airflow actuators of the engine is controlled, based on the intake manifold pressure and the EGR valve position, to generate a first torque reserve. In response to generating the first torque reserve, the controller then commands the HL-to-LL transition and depletion of the first torque reserve during the HL-to-LL transition to mitigate torque disturbance associated with this transition.