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公开(公告)号：US11959402B2
公开(公告)日：2024-04-16
申请号：US17509321
申请日：2021-10-25
发明人： Dale Arden Stretch
CPC分类号： F01L1/185 , F01L1/08 , F01L13/0021 , F02D13/0207 , F01L2001/186 , F01L13/0015 , F01L2305/00 , F01L2800/10 , F01L2820/01 , Y02T10/12
摘要： A method of using a through axle switching rocker arm according to one example of the present disclosure is provided. The switching rocker arm comprises an outer and inner arm and a roller axle. The inner arm is pivotally coupled to the outer arm about a pivot axle and has an inner bushing that supports an inner roller. The inner bushing defines an inner diameter. The roller axle extends through the inner bushing and defines an outer diameter. The inner diameter of the inner bushing engages the outer diameter of the roller axle thereby inhibiting further pivoting of the inner arm relative to the outer arm defining a rocker arm travel constraint. The method includes designing first and second cam profiles based on the through axle switching rocker arm such that a difference in lift between the first and second cam profiles is held within the rocker arm travel constraint.
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公开(公告)号：US20180195421A1
公开(公告)日：2018-07-12
申请号：US15835225
申请日：2017-12-07
申请人： OTICS CORPORATION
发明人： Takayuki MAEZAKO , Akira SUGIURA
CPC分类号： F01L13/0021 , F01L1/18 , F01L1/182 , F01L1/185 , F01L13/0005 , F01L2001/186
摘要： In a variable valve mechanism, during switching from a disconnected state to a connected state, the switch arm being displaced in a return direction comes in sliding contact with a pin end surface of the switch pin, and presses the pin end surface toward the disconnected position to push back the switch pin. At a sliding contact start time, the switch arm sliding contacts a portion of the pin end surface on a return direction side with respect to an idle-swing-side edge. At least during a period from a 10% position time to a sliding contact end time, a position of a pressed center relative to the pin end surface shifts toward the return direction side without stopping as the switch arm is displaced toward the return direction relative to a main arm, so that the sliding contact ends without stopping of the pressed center at a return-side edge.
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公开(公告)号：US20180163576A1
公开(公告)日：2018-06-14
申请号：US15835718
申请日：2017-12-08
申请人： Eaton Corporation
CPC分类号： F01L1/18 , B21D53/84 , B23P19/04 , B23P19/042 , F01L1/185 , F01L13/0021 , F01L2001/186 , F01L2103/01 , Y10T29/49107
摘要： A method of assembling a switching rocker arm assembly having an inner arm, an outer arm and a latch. The method includes indenting an outer arm surface on the outer arm, the outer arm surface defining an arcuate aperture. An inner arm surface can be indented on the inner arm at an inner arm latch shelf. A latch can be positioned relative to the inner and outer arms.
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公开(公告)号：US20180094551A1
公开(公告)日：2018-04-05
申请号：US15282602
申请日：2016-09-30
CPC分类号： F01L1/24 , F01L1/185 , F01L1/2405 , F01L13/0005 , F01L13/0021 , F01L13/0036 , F01L2001/186 , F01L2001/2444 , F01L2013/001 , F01L2105/00 , F01L2820/01 , F01L2820/033
摘要： A switchable roller finger follower includes an inner lever, an outer lever pivotably mounted to the inner lever by a pivot axle, and a coupling device. The coupling device includes a coupling pin configured to move between a locked position in which the inner lever and the outer lever are connected together for movement in at least one direction and an unlocked position in which the inner lever is movable relative to the outer lever in the at least one direction. The coupling device also includes a spring configured to bias the coupling pin in the locked or unlocked position. A de-aeration flow path is formed between an oil passage and an opening for allowing air to move out of the oil passage, past the coupling pin, and exit through the opening. The de-aeration flow path switches between being open and closed based on a position of the coupling pin.
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公开(公告)号：US09915180B2
公开(公告)日：2018-03-13
申请号：US14980999
申请日：2015-12-28
申请人： Eaton Corporation
发明人： Anthony L. Spoor , James R. Sheren
CPC分类号： F01L1/22 , B21D39/00 , B21D53/84 , B23P19/02 , F01L1/18 , F01L1/185 , F01L1/2405 , F01L13/0005 , F01L13/0021 , F01L13/0036 , F01L13/0042 , F01L2001/0537 , F01L2001/186 , F01L2013/001 , F01L2101/00 , F01L2103/01 , F01L2800/11 , F01L2820/01 , F01L2820/043 , Y10T29/49297 , Y10T29/53 , Y10T29/53796
摘要： A novel latch seat for a switching rocker arm assembly used in variable valve actuation (VVA) systems for internal combustion engines. The seat is formed interactively in the assembled switching rocker arm using a novel fixture and press. The press interactively creates a curved dimple of the correct curvature, position and depth while measuring several lash dimensions. Since the latch seat is formed on the assembled rocker arm assembly, the latch seat depth is designed to account for the inaccuracies in the rocker arm assembly parts which create lash. Therefore all of the parts may be made with less precision since the latch seat is sized to compensate for the inaccuracies of all of the parts. The rocker arm assembly parts now may be manufactured to less stringent standards, but result in a rocker arm assembly with same accuracy of rocker arm assemblies manufactured to previous standards.
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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.
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公开(公告)号：US20180030861A1
公开(公告)日：2018-02-01
申请号：US15710199
申请日：2017-09-20
申请人： Eaton Corporation
发明人： Anthony L. Spoor , James R. Sheren
CPC分类号： F01L1/22 , B21D39/00 , B21D53/84 , B23P19/02 , F01L1/18 , F01L1/185 , F01L1/2405 , F01L13/0005 , F01L13/0021 , F01L13/0036 , F01L13/0042 , F01L2001/0537 , F01L2001/186 , F01L2013/001 , F01L2101/00 , F01L2103/01 , F01L2800/11 , F01L2820/01 , F01L2820/043 , Y10T29/49297 , Y10T29/53 , Y10T29/53796
摘要： An apparatus includes a ball plunger post and a valve stem post extending upward from a base, the ball plunger post having a size and a shape of a hydraulic lift adjuster (HLA) of a predefined engine, and the valve stem post having a size and a shape of a valve stem of the predefined engine. The apparatus includes a fixture sized and shaped to receive a switching rocker arm assembly, the switching rocker arm assembly having a first end for pivoting and a second end for latching, and a latch with a latch pin fitting into a latch bore and a latch seat. The apparatus includes a latch rod for positioning within the latch bore to rest upon the latch seat, the latch rod having a hardness higher than that of the latch seat and a same diameter as the latch pin, and adapted for coining the latch seat.
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公开(公告)号：US09874121B2
公开(公告)日：2018-01-23
申请号：US14955249
申请日：2015-12-01
发明人： Myungsik Choi , Young Hong Kwak
CPC分类号： F01L13/0021 , F01L1/185 , F01L13/0005 , F01L2001/186 , F01L2001/467 , F01L2105/00 , F16K1/32 , F16K31/52408
摘要： A variable valve lift apparatus that changes a lift of a valve in an engine may include: an outer body; an inner body; a cam contact portion disposed in the second space, rotatably connected to the inner body, and contacting the cam so that the inner body makes a lever motion according to rotation of the cam; a connecting shaft disposed and the one end of the inner body and connect the outer body with the inner body; and a lost motion spring, wherein the inner body is selectively fixed to the outer body or is selectively released from fixing with the outer body, and both ends of the connecting shaft protrude to both sides in the width direction of the outer body and a valve contact portion, which contacts a valve, is formed at the both ends.
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公开(公告)号：US09816409B2
公开(公告)日：2017-11-14
申请号：US14737776
申请日：2015-06-12
发明人： Myungsik Choi , Gee Wook Shin , Won Gyu Kim , Gyu Han Hwang , Young Hong Kwak , Yoonsik Woo
CPC分类号： F01L13/0021 , F01L1/18 , F01L1/185 , F01L1/2405 , F01L1/267 , F01L13/0005 , F01L2001/186 , F01L2001/467
摘要： A variable valve lift apparatus to vary lift of a valve disposed at an engine may include an outer body selectively making a lever motion according to rotation of a cam, being adapted such that the valve is connected with one end thereof and a pivot axis of the lever motion is disposed at another end thereof, and forming an inside space, an inner body disposed in the inside space of the outer body and adapted such that one end thereof is rotatably connected with the one end of the outer body, a connecting shaft disposed so as to penetrate the one end of the outer body and the one end of the inner body and connect the outer body with the inner body, and a lost motion spring provided so as to return the inner body which is relatively rotated with the outer body around the connecting shaft.
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公开(公告)号：US09765658B2
公开(公告)日：2017-09-19
申请号：US13038418
申请日：2011-03-02
申请人： Michael B. Knauf , Mark C. Sellnau
发明人： Michael B. Knauf , Mark C. Sellnau
CPC分类号： F01L13/0021 , F01L1/185 , F01L1/267 , F01L13/0036 , F01L2800/10 , F02D13/0211 , F02D13/0219 , F02D13/0242 , F02D13/0257 , F02D13/0273 , F02M26/01 , Y02T10/18
摘要： A valve train system for an internal combustion engine includes an exhaust valve moveable between an exhaust closed position and an exhaust open position. A camshaft includes a main exhaust lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for expelling exhaust constituents from the combustion chamber and an exhaust rebreath lobe for moving the exhaust valve between the exhaust closed position and the exhaust open position for allowing exhaust constituents into the combustion chamber. A two-step device is provided for transmitting motion from the camshaft to the exhaust valve and is switchable between a motion transmitting position and a motion preventing position such that the motion transmitting position allows motion to be transmitted from the exhaust rebreath lobe to the exhaust valve and the motion preventing position prevents motion from being transmitted from the exhaust rebreath lobe to the exhaust valve.
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