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公开(公告)号：US10450908B2
公开(公告)日：2019-10-22
申请号：US16244135
申请日：2019-01-10
发明人： Majo Cecur , Marco Alessandria , Nicola Andrisani
摘要： An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode includes: a rocker shaft that defines a pressurized oil supply conduit; a rocker arm for receiving the rocker shaft and to rotate around the rocker shaft, the rocker arm including an oil supply passage defined therein; a valve bridge for engaging a first exhaust valve and a second exhaust valve; a first plunger body movable between a first position and a second position, and that in the first position extends rigidly for cooperative engagement with the valve bridge; a check valve disposed on the rocker arm and including an actuator for selectively releasing pressure acting on the first plunger body, the actuator including a needle including a longitudinal disk portion and a disk portion; and an oil discharge circuit for to selectively depressurizing oil under the disk portion of the actuator.
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公开(公告)号：US20190145291A1
公开(公告)日：2019-05-16
申请号：US16244135
申请日：2019-01-10
发明人： Majo Cecur , Marco Alessandria , Nicola Andrisani
CPC分类号： F01L13/06 , F01L1/18 , F01L1/181 , F01L1/24 , F01L1/2416 , F01L13/065 , F01L2760/004 , F02D13/04
摘要： An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode includes: a rocker shaft that defines a pressurized oil supply conduit; a rocker arm for receiving the rocker shaft and to rotate around the rocker shaft, the rocker arm including an oil supply passage defined therein; a valve bridge for engaging a first exhaust valve and a second exhaust valve; a first plunger body movable between a first position and a second position, and that in the first position extends rigidly for cooperative engagement with the valve bridge; a check valve disposed on the rocker arm and including an actuator for selectively releasing pressure acting on the first plunger body, the actuator including a needle including a longitudinal disk portion and a disk portion; and an oil discharge circuit for to selectively depressurizing oil under the disk portion of the actuator.
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公开(公告)号：US11225887B2
公开(公告)日：2022-01-18
申请号：US16699160
申请日：2019-11-29
发明人： Majo Cecur , Marco Alessandria , Nicola Andrisani
摘要： 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：US20200095910A1
公开(公告)日：2020-03-26
申请号：US16699160
申请日：2019-11-29
发明人： Majo Cecur , Marco Alessandria , Nicola Andrisani
摘要： 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：US11454139B2
公开(公告)日：2022-09-27
申请号：US16318381
申请日：2017-07-18
发明人： Marco Alessandria
摘要： A method for setting lash on a rocker arm assembly having a lost motion stroke includes: providing a rocker arm having a lost motion shaft including a collar, the lost motion shaft being biased toward a valve bridge by a lost motion spring, the lost motion shaft being translatable along a bore defined in the rocker arm; inserting a feeler gage in an area between the collar and the rocker arm; and adjusting an adjusting screw until a desired lash is attained.
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