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公开(公告)号：US11078811B2
公开(公告)日：2021-08-03
申请号：US16769613
申请日：2018-12-10
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani
Abstract: An apparatus for actuating one or more latching arrangements of one or more respective rocker arms of a valve train assembly of an internal combustion engine, each rocker arm comprising a first body, a second body for pivotal motion with respect to the first body, and the latching arrangement, the latching arrangement latching and unlatching the first body and the second body, the includes: a shaft rotatable by an actuation source, from a rest orientation, in a first direction, and rotatable by the actuation source, from the rest orientation, in a second direction opposite the first direction; one or more selector cams rotatable by the shaft, each selector cam actuating the latching arrangement of a respective rocker arm so as to latch and/or unlatch the first body and the second body; and a return apparatus for returning the shaft to the rest orientation.
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公开(公告)号：US10968790B2
公开(公告)日：2021-04-06
申请号：US16636944
申请日：2018-08-06
Applicant: Eaton Intelligent Power Limited
Inventor： Emanuele Raimondi , Nicola Andrisani
Abstract: An actuation apparatus actuates a latching arrangement of a switchable valve train component of an internal combustion engine. The apparatus includes: a lever configured to contract an actuation source and configured to contact the latching arrangement; and a bias. The bias contacts the lever. The bias is configured such that, in use, the bias becomes biased by the lever when the actuation source moves the lever when the actuation source attempts to actuate the latching arrangement, via the lever, when the latching arrangement is non-actuatable, whereby the bias causes the lever to actuate the latching arrangement when the latching arrangement is actuatable again.
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公开(公告)号：US10907514B2
公开(公告)日：2021-02-02
申请号：US16209222
申请日：2018-12-04
Applicant: Eaton Intelligent Power Limited
Inventor： Fabiano Contarin , Nicola Andrisani , Eric Yankovic , Mark VanWingerden , Matthew Vance , James E. McCarthy, Jr. , Michael Guzak
Abstract: A valve train assembly includes at least a number of exhaust valves; at least one camshaft with at least a pair of a primary lift cam and an engine brake lift cam. A number of rocker arms each include a cam follower for following one of the primary lift cam and the engine brake lift cam. One rocker arm includes a cam follower following an engine brake lift cam. The rocker arm is provided with an engine brake capsule. Various biasing assemblies are disclosed that cooperate with one of the rocker arms of which the cam follower follows an engine brake lift cam to accommodate mechanical lash.
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公开(公告)号：US20200095910A1
公开(公告)日：2020-03-26
申请号：US16699160
申请日：2019-11-29
Applicant: Eaton Intelligent Power Limited
Inventor： Majo Cecur , Marco Alessandria , Nicola Andrisani
Abstract: An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode can include a rocker shaft and a rocker arm. The rocker shaft can define a pressurized oil supply conduit. The rocker arm can receive the rocker shaft and is configured to rotate around the rocker shaft. The rocker arm can have an oil supply passage defined therein. A valve bridge can engage a first exhaust valve and a second exhaust valve. A hydraulic lash adjuster assembly can include first and second plunger bodies, the first plunger body can engage the valve bridge.
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公开(公告)号：US20250101891A1
公开(公告)日：2025-03-27
申请号：US18972251
申请日：2024-12-06
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani
Abstract: A hydraulic capsule for use in a rocker arm comprises a housing having an upper chamber that receives fluid and a lower chamber in fluid communication with the upper chamber, a pin disposed in the upper chamber and configured to be hydraulicly controlled to extend and/or retract, a check valve assembly disposed in the lower chamber and configured to selectively enable fluid communication between the upper chamber and the lower chamber based on the position of the pin, a plunger disposed in the lower chamber and configured to be hydraulicly controlled to move between an extended position and a retracted position, and a first spring coupled to the plunger and configured to bias the plunger in the retracted position. Particularly, in the retracted position, the plunger does not engage a valve bridge. In the extended position, the plunger is able to engage the valve bridge.
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Patent Agency Ranking
公开(公告)号：US20250043704A1
公开(公告)日：2025-02-06
申请号：US18923408
申请日：2024-10-22
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani
Abstract: A rocker arm assembly includes an engine brake capsule assembly. The engine brake capsule assembly movable between a retracted position and an extended position. The engine brake capsule assembly comprises a body comprising a lower chamber and an upper chamber. The engine brake capsule assembly further comprises a plunger disposed partially within the lower chamber, wherein the plunger comprises an external shoulder disposed on a side of the plunger, and a locking pin configured to extend into the lower chamber and engage with the external shoulder of the plunger. The engine brake capsule assembly further comprises an actuation pin disposed within the upper chamber and extending down into an internal housing disposed within the lower chamber and a check ball valve assembly disposed within the plunger configured to selectively enable a hydraulic fluid into an internal chamber of the plunger.
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47.发明申请公开(公告)号：US20250020071A1
公开(公告)日：2025-01-16
申请号：US18899963
申请日：2024-09-27
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani , Vikram Deokar , Ketaki Purkar , Alessandro Roscioli
Abstract: An added-motion engine braking system selectively operable in an engine braking mode and a drive mode and compatible with providing hydraulic lash adjustment includes an exhaust rocker arm assembly, a main exhaust valve and a brake valve, a valve bridge configured to selectively act on the main exhaust valve and the brake valve and constrained to move parallel to a valve opening direction, a hydraulic lash adjuster disposed on the exhaust rocker arm assembly and configured to automatically compensate for lash between the exhaust rocker arm assembly and the valve bridge; and an engine braking rocker arm assembly configured to selectively act on the brake valve in the engine brake mode, wherein, in a base circle position with the main exhaust valve and the brake valve closed, the valve bridge is configured to preferentially contact the main exhaust valve compared to the brake valve.
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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
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).
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公开(公告)号：US20240392704A1
公开(公告)日：2024-11-28
申请号：US18797133
申请日：2024-08-07
Applicant: Eaton Intelligent Power Limited
Inventor： Nicola Andrisani , Emanuele Raimondi , Massimo D'Amore
Abstract: An exhaust valve rocker arm assembly selectively operable in an engine braking mode includes a rocker arm and a valve end configured to selectively act on a valve bridge to engage a first and a second exhaust valve. The valve end includes a brake capsule to selectively extend in a first position to act on the first exhaust valve through the valve bridge. The valve end also includes a lost motion mechanism capable of selectively transmitting motion of the rocker arm to the valve bridge. The lost motion mechanism may integrate a hydraulic lash adjuster in particular embodiments.
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公开(公告)号：US11852047B2
公开(公告)日：2023-12-26
申请号：US17499336
申请日：2021-10-12
Applicant: Eaton Intelligent Power Limited
Inventor： Ramy Rezkalla , Andrei Radulescu , Nicola Andrisani
CPC classification number: F01L1/18 , F01L1/2405 , F01L1/46 , F01L13/0005 , F01L13/06 , F01L2001/467 , F01L2013/001
Abstract: A valve train arrangement constructed in accordance to one example of the present teachings includes a rocker arm, a deactivating hydraulic lash adjuster (HLA) capsule, a lost motion spring (LMS) capsule and a lever. The rocker arm has a first end and a second end. The second end cooperates with a valve. The HLA capsule cooperates with the first end of the rocker arm. The LMS capsule has a lost motion spring. The LMS capsule is located in a position on the valve train arrangement that is offset from the HLA capsule. The lever is configured between the HLA capsule and the LMS capsule. During cylinder deactivation, load is transferred from the HLA capsule to the lever arm and ultimately to the lost motion spring in the LMS capsule.
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