-
公开(公告)号：US12123328B2
公开(公告)日：2024-10-22
申请号：US18364253
申请日：2023-08-02
发明人： Ondrej Císar , Ondrej Bolehovský
CPC分类号： F01L1/26 , F01L1/181 , F01L1/267 , F01L1/46 , F01L13/06 , F01L13/065 , F01L2001/186 , F01L1/2411
摘要： A swing bridge for a rocker arm assembly is provided. The swing bridge is configured to be selectively actuated by a first rocker arm or a second rocker arm and span a first valve and a second valve. The swing bridge comprises a bridge body including a through opening and a bore intersecting the through opening, and a swing mechanism configured to connect between the first rocker arm and the first valve. The swing mechanism comprises a swing pin configured to swing in the through opening and a rotary cylinder configured to support the swing pin and rotate in the bore. In particular, the swing bridge may swing angularly upon actuation by the first rocker arm so as to actuate the first valve without actuating the second valve and may actuate both the first valve and the second valve upon actuation by the second rocker arm.
-
公开(公告)号：US12071867B2
公开(公告)日：2024-08-27
申请号：US18117598
申请日：2023-03-06
CPC分类号： F01L1/182 , F01L1/18 , F01L1/181 , F01L1/185 , F01L1/24 , F01L1/2416 , F01L1/26 , F01L1/267 , F01L13/065 , F01L2001/186 , F01L2001/467 , F01L13/06 , F01L2305/00 , F01L2800/10
摘要： In one embodiment, an exhaust valve rocker arm assembly selectively opening first and second exhaust valves is provided. The assembly includes an exhaust rocker arm and a valve bridge operably associated with the exhaust rocker arm and including a main body and a first lever rotatably coupled to the main body. The main body is configured to engage the first exhaust valve, and the first lever is configured to engage the second exhaust valve. The valve bridge further includes a second lever rotatably coupled to the main body. The second lever is configured to engage the first exhaust valve.
-
公开(公告)号：US20240209758A1
公开(公告)日：2024-06-27
申请号：US18557150
申请日：2022-04-26
发明人： Long WANG , Nicola ANDRISANI
摘要： 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：US20240044266A1
公开(公告)日：2024-02-08
申请号：US18364253
申请日：2023-08-02
发明人： Ondrej Císar , Ondrej Bolehovský
CPC分类号： F01L1/26 , F01L1/181 , F01L2001/186
摘要： A swing bridge for a rocker arm assembly is provided. The swing bridge is configured to be selectively actuated by a first rocker arm or a second rocker arm and span a first valve and a second valve. The swing bridge comprises a bridge body including a through opening and a bore intersecting the through opening, and a swing mechanism configured to connect between the first rocker arm and the first valve. The swing mechanism comprises a swing pin configured to swing in the through opening and a rotary cylinder configured to support the swing pin and rotate in the bore. In particular, the swing bridge may swing angularly upon actuation by the first rocker arm so as to actuate the first valve without actuating the second valve and may actuate both the first valve and the second valve upon actuation by the second rocker arm.
-
公开(公告)号：US20190145289A1
公开(公告)日：2019-05-16
申请号：US16186500
申请日：2018-11-10
CPC分类号： F01L1/255 , F01L1/08 , F01L1/181 , F01L1/24 , F01L1/2416 , F01L1/26 , F01L13/065 , F01L2001/2433 , F01L2013/105 , F01L2105/00
摘要： Systems for valve actuation in internal combustion engines provide configurations for hydraulic lash adjusters and valve actuation valvetrain components that are particularly suitable for prevention of HLA jacking in lost motion cam environments and in valve bridge environments. In one implementation, a rocker arm may transmit motion from a lost motion cam having main event and auxiliary event lobes. Main event motion is transmitted to two engine valves through the rocker arm, a lash adjuster, lash adjuster loading component and valve bridge, which define part of a first load path. Braking motion is transmitted to one of the engine valves through an inboard valve actuator and bridge pin, which define part of a second load path. The HLA is thus disposed in a separate load path from the braking valve load and the lash adjuster loading component keeps the lash adjuster under a constant compressive force to prevent jacking.
-
公开(公告)号：US10082051B2
公开(公告)日：2018-09-25
申请号：US15677823
申请日：2017-08-15
发明人： Koichi Tanaka , Kunio Arase
CPC分类号： F01L1/18 , F01L1/053 , F01L1/08 , F01L1/181 , F01L1/26 , F01L1/46 , F01L1/462 , F01L2105/00 , F01L2250/02 , F01L2810/00 , F01L2810/03
摘要： A rocker arm includes a pivot portion that is journaled by a rocker arm shaft, a contact portion that projects from the pivot portion to a side of a valve cam, and a pressing portion that projects from the pivot portion to a side of a valve. While including a slipper projecting from the pivot portion in outer side in an axial direction to a side of a camshaft, an overhead valve actuation mechanism for the engine includes a stopper portion with which the slipper comes in contact when the rocker arm swings and reaches a predetermined position at a position opposing the slipper.
-
公开(公告)号：US20180187579A1
公开(公告)日：2018-07-05
申请号：US15738668
申请日：2016-06-24
申请人： Eaton Srl
发明人： Majo CECUR
摘要： An engine brake rocker arm assembly operable in an engine drive mode and an engine braking mode, the engine brake rocker arm assembly selectively opening first and second exhaust valves, includes: an exhaust valve rocker arm assembly having an exhaust rocker arm that rotates around a rocker shaft; and an engine brake actuation assembly including an actuator assembly; an actuator lever; and a mechanically controlled engine brake actuator that moves between a first position corresponding to the engine brake mode in which the second exhaust valve is opened prior to the first exhaust valve, and a second position corresponding to the drive mode in which the second valve is not opened prior to the first exhaust valve.
-
公开(公告)号：US09988953B2
公开(公告)日：2018-06-05
申请号：US15275814
申请日：2016-09-26
发明人： Toru Kisaichi
CPC分类号： F01L13/08 , F01L1/053 , F01L1/181 , F01L1/26 , F01L1/267 , F01L13/085 , F01L2001/0535 , F01L2013/108 , F02B75/16 , F02D13/0249 , F02D13/0273
摘要： An internal combustion engine for increasing the freedom of the layout of a rocker arm wherein the rocker arm is lighter. The internal combustion engine includes a camshaft having a first exhaust cam and a second exhaust cam, a first exhaust valve, and a second exhaust valve. The internal combustion engine further includes a first rocker arm for actuating the first exhaust valve to open and close, a second rocker arm for actuating the second exhaust valve to open and close, and a decompression mechanism for lifting the first rocker arm in a valve opening direction at the timing of a compression stroke initiated by the internal combustion engine. The first rocker arm and the second rocker arm are provided with an angular movement transmitter for transmitting a turning force produced by a decompression operator in the valve opening direction from the first rocker arm to the second rocker arm.
-
公开(公告)号：US20180135555A1
公开(公告)日：2018-05-17
申请号：US15574999
申请日：2015-05-25
发明人： Yoshiyasu KIMURA , Takao ITO , Nobuhiko SATO , Tadatoshi MIYANO
CPC分类号： F02F1/42 , F01L1/04 , F01L1/053 , F01L1/26 , F01L2001/0476 , F01L2001/0537 , F02F1/002 , F02F1/24 , F02F1/242 , F02F2001/244
摘要： An internal combustion engine including: a cylinder block in which a plurality of cylinders are formed; and a cylinder head formed in conjunction with the cylinder block into one body to form a plurality of combustion chambers, wherein an upper surface of the cylinder head is divided, along a direction in which the plurality of cylinders are arranged, into first regions that are regions that overlap the combustion chambers as viewed from an axial direction of the cylinders and a second region that is a region located between two of the first regions adjacent to each other, and at least either an intake-side cam journal or an exhaust-side cam journal is disposed in the second region.
-
公开(公告)号：US09885262B2
公开(公告)日：2018-02-06
申请号：US15254459
申请日：2016-09-01
发明人： Kyung Mo Kim
CPC分类号： F01L13/0026 , F01L1/047 , F01L1/18 , F01L1/181 , F01L1/26 , F01L1/267 , F01L13/0021 , F01L2001/0476 , F01L2105/00 , F02D13/0207 , F02D13/0215 , F02D13/0219 , F02D41/0002 , F02D2041/001 , Y02T10/18 , Y02T10/42
摘要： A continuous variable valve duration system includes a camshaft, a first cam portion including a first cam, into which the camshaft is inserted and of which a relative phase angle of the first cam with respect to the camshaft is variable, an inner bracket for transmitting rotation of the camshaft to the first cam portion, a slider housing into which the inner bracket is rotatably inserted, on which a control slot is formed, and the slider housing being rotatable around a pivot shaft, a first rocker arm of which a first end contacts with the first cam and of which a second end is connected to a first valve, a rocker shaft of which the first rocker arm is rotatably connected thereto and of which an eccentric shaft inserted into the control slot is formed thereto, and a control portion for rotating the rocker shaft for the slider housing to be moved with respect to the camshaft.
-
-
-
-
-
-
-
-
-
搜索结果
880 条记录 (耗时 0.024 秒)
