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公开(公告)号：US20200040775A1
公开(公告)日：2020-02-06
申请号：US16492173
申请日：2017-10-24
摘要： 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.
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公开(公告)号：US20180363518A1
公开(公告)日：2018-12-20
申请号：US15781183
申请日：2016-12-05
摘要： A valve train assembly includes valves having a valve stem; a main camshaft having main cams corresponding to the valves; main rocker arms corresponding to the valves; an auxiliary cam arranged on the main camshaft; at an auxiliary cam follower following the auxiliary cam, the auxiliary cam follower being movably arranged on a main rocker arm between a first and second position; and a latch on a main rocker arm for locking the auxiliary cam follower in the first position. A rotatable control rod controlling the latch is between the first and the second positions. The control rod includes a transmission element configured to convert torque in the control rod into a control force to control movement of the latch.
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公开(公告)号：US20240263572A1
公开(公告)日：2024-08-08
申请号：US18564703
申请日：2022-05-27
CPC分类号： F01L1/46 , F01L1/181 , F01L2001/186 , F01L13/0005 , F01L2013/001 , F01L13/06
摘要： A pivoting bracket assembly for a valvetrain comprises a pivot pin, a first bracket comprising a first mounting area rotatable about the pivot pin and a first reaction arm extending away from the first mounting area, and a second bracket comprising a second mounting area rotatable about the pivot pin and a second reaction arm extending away from the first mounting area. A compliance member comprises a receiving leg biased against the first bracket and a transfer leg biased against the second bracket. A bias member comprises a first leg biased against the second bracket and a second leg configured to mount the bias member relative to the pivot pin. The bias member is configured to oppose bias forces from the compliance member. An actuator assembly can be installed so that a rotatable shaft is perpendicular to the pivot pin.
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公开(公告)号：US20210189917A1
公开(公告)日：2021-06-24
申请号：US16492176
申请日：2017-10-24
摘要： 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.
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5.发明公开公开(公告)号：US20240200475A1
公开(公告)日：2024-06-20
申请号：US18555020
申请日：2022-04-14
CPC分类号： F01L1/2416 , F01L1/181 , F01L1/46 , F01L2001/467 , F01L13/0005 , F01L2013/001 , F01L13/06
摘要： A switchable castellation assembly can include a lost motion shaft, the lost motion shaft being configured to transfer a lift profile to a valve end. A switchable castellation device can comprise a rotatable first spline bushing and a spline body, wherein the first spline bushing can be changed between a locked position and an unlocked position, and a lost motion can be obtained by sliding the lost motion shaft.
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公开(公告)号：US20240093621A1
公开(公告)日：2024-03-21
申请号：US18253974
申请日：2021-11-30
发明人： Emanuele RAIMONDI , Massimo D'AMORE
CPC分类号： F01L1/181 , F01L1/46 , F01L2001/467 , F01L2303/00
摘要： A rocker arm assembly can include a latch assembly, a primary arm configured to receive the latch assembly, and a secondary arm configured to receive the latch assembly. The secondary arm includes a secondary arm body and a piston support ring. A pivot slot passes through the primary arm, the secondary arm body, and the piston support ring.
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公开(公告)号：US20230235685A1
公开(公告)日：2023-07-27
申请号：US17999625
申请日：2021-05-28
发明人： Emanuele RAIMONDI , Massimo D'AMORE
CPC分类号： F01L1/181 , F01L13/0005 , F01L2305/02 , F01L2013/105
摘要： A rocker arm assembly can include an outer arm having an outer rocker shaft bore configured to receive a rocker shaft and an inner arm having an inner rocker shaft bore configured to receive the rocker shaft. The inner arm can be configured to selectively rotate. A latch pin can be movably seated in the outer arm and configured to move between a latched position and an unlatched position. The rocker arm assembly can further include a lost motion spring. The lost motion spring can include a first end connected to a connecting portion of the inner arm above the inner rocker shaft bore and a second end connected to the outer arm. The inner arm can include an inner arm stop member configured contact with a corresponding outer arm stop member of the outer arm.
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公开(公告)号：US20200308993A1
公开(公告)日：2020-10-01
申请号：US16300593
申请日：2017-04-21
摘要： 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.
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