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公开(公告)号：US10309274B2
公开(公告)日：2019-06-04
申请号：US15823765
申请日：2017-11-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toshiyuki Yano , Yu Yokoyama , Yuta Nishimura , Atsuhisa Tamano , Soichiro Suga
Abstract: For example, two intake valves for each cylinder each are driven by a selected one of cams via a corresponding rocker arm. Each rocker arm includes a support portion and a pressing portion (distal end portion). The support portion is rockably supported by a cylinder head. The pressing portion is configured to press a stem of the corresponding intake valve. The support portion of one of the rocker arms deviates to one side in an axis X direction (cam axial direction) with respect to the distal end portion. The support portion of the other one of the rocker arms deviates to the other side in the axis X direction with respect to the distal end portion.
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公开(公告)号：US10287929B2
公开(公告)日：2019-05-14
申请号：US15485572
申请日：2017-04-12
Applicant: MAN Truck & Bus AG
Inventor： Hai-Son Pham
IPC: F01L13/00 , F01L1/18 , F01L1/047 , F01L1/08 , F01L1/20 , F01L1/46 , F16H37/12 , F01L1/24 , F01L1/26
Abstract: The present disclosure relates to a variable valve drive for a lifting valve, in particular for a charge-exchange valve of an internal combustion engine, which is periodically movable between a closed position and an open position indirectly by way of a cam via a rocker lever. The variable valve drive includes a switchable rocker lever arrangement for the actuation of the lifting valve, having a transmission rocker lever and a valve rocker lever which are mounted pivotably on different rocker lever axles which are each parallel to the camshaft axis.
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公开(公告)号：US10267187B2
公开(公告)日：2019-04-23
申请号：US15464158
申请日：2017-03-20
Applicant: Ford Global Technologies, LLC
Inventor： Paul A. Pietrzyk , Ed Badillo , John Eric Rollinger
Abstract: Methods and systems are described for an engine with a cam torque actuated variable cam timing phaser. Phaser positioning control is improved by reducing inaccuracies resulting from inadvertent spool valve and/or phaser movement when the spool valve is commanded between regions. In addition, improved spool valve mapping is used to render phaser commands more consistent and robust.
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公开(公告)号：US20190093525A1
公开(公告)日：2019-03-28
申请号：US15717850
申请日：2017-09-27
Applicant: Ford Global Technologies, LLC
Inventor： Danny Nakhle , Kevin Shinners , Robert Stephen Furby
Abstract: Methods and systems are provided for an engine including cams having different lobe profiles. In one example, cams of a first cam group drive a plurality of deactivatable cylinder valves and cams of a second cam group drive a plurality of non-deactivatable cylinder valves. The cams of the first cam group include a different lobe profile relative to cams of the second cam group.
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公开(公告)号：US20190072012A1
公开(公告)日：2019-03-07
申请号：US16086379
申请日：2017-03-23
Applicant: SHANGHAI UNIVERSOON AUTOPARTS CO., LTD.
Abstract: A multifunctional engine brake, comprising an engine valve motion transformation mechanism, a slow seating mechanism (250), and a timing oil control mechanism. By axially moving a roller (235) on a roller shaft (231), the connections between the roller (235) and different cams (230, 2302) are switched, so as to implement the transformation between different engine valve motions. A roller axial driving mechanism (100) is disposed in the roller shaft (231), thereby achieving a simple and compact structure, a symmetrical and reliable force, and easy manufacturing and assembling. The timing oil control mechanism provides timing oil supply or discharge for the engine brake, thereby eliminating the randomness of the opening or closing of a conventional engine brake, avoiding slipping and impact of the roller during roller translation, and improving the reliability and durability of the brake and engine. The slow seating mechanism (250) effectively reduces and controls the seating speed of the valve, thereby eliminating the compact within the mechanism. The brake can be used for different types of variable valve motions, comprising valve motions generating 4-stroke braking, 2-stroke braking, or 1.5-stroke braking.
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Patent Agency Ranking
公开(公告)号：US20190072011A1
公开(公告)日：2019-03-07
申请号：US15766836
申请日：2016-10-07
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Majo CECUR , Lubos TOMISKA
CPC classification number: F01L13/0036 , F01L1/053 , F01L1/08 , F01L1/18 , F01L1/185 , F01L1/46 , F01L13/00 , F01L13/0005 , F01L2001/186 , F01L2013/105 , F01L2101/00 , F01L2800/10
Abstract: An actuator for actuating valve-lift modes of a valve train assembly of an internal combustion engine, The valve train assembly is capable of being switched between a first valve-lift mode and a second valve-lift mode. The actuator includes a first body and a second body, The second body is mounted for reciprocal movement with respect to the first body between a first position to cause the first valve-lift mode and a second position to cause the second valve-lift mode. The actuator includes a third body supported by the second body, the third body for moving a first component of the valve train assembly to cause the second valve-lift mode, The third body is moveable relative to the second body. The actuator includes a first biaser for biasing the third body away from the second body towards the first component of the valve train assembly.
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公开(公告)号：US20180306073A1
公开(公告)日：2018-10-25
申请号：US16022054
申请日：2018-06-28
Applicant: Eaton Corporation
Inventor： James E. McCarthy, JR. , Edwin Scott Brownell , Nikhil Saggam , Susheel Dharmadhikari
CPC classification number: F01L13/0036 , F01L1/08 , F01L1/185 , F01L1/2405 , F01L2001/186 , F01L2001/467 , F01L2105/00 , F01L2800/08 , F01L2820/01
Abstract: A method of providing a rocker arm set for a valvetrain includes providing a first rocker arm configured as a switching rocker arm for a first intake valve, and providing a second rocker arm configured as a fixed rocker arm for a second intake valve, the second rocker arm operating in a normal Otto cycle mode. The first rocker arm operates in a late intake valve closing (LIVC) mode where the first rocker arm is configured to close the first intake valve later than the second intake valve.
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公开(公告)号：US20180306072A1
公开(公告)日：2018-10-25
申请号：US16022042
申请日：2018-06-28
Applicant: Eaton Corporation
Inventor： Edwin Scott Brownell , James E. McCarthy, JR. , Nikhil Saggam
CPC classification number: F01L13/0036 , F01L1/08 , F01L1/185 , F01L1/2405 , F01L2001/186 , F01L2001/467 , F01L2105/00 , F01L2800/00 , F01L2820/01
Abstract: A switching roller finger follower for valve actuation comprises a pair of outer arms comprising an axle mounting. A bridge portion joins the pair of outer arms. A latch assembly comprises a ferrule. The ferrule is configured to reciprocate in a latch recess. An inner arm is pivotably mounted to a main axle and comprises a bearing rotatably mounted to a bearing axle. The bearing is configured to transfer forces from a cam lobe to the inner arm. A catch on the inner arm is configured to latch against the lip when the ferrule is in a first position. The catch can pivot past the ferrule when the ferrule is in a second position.
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公开(公告)号：US10077690B2
公开(公告)日：2018-09-18
申请号：US15248805
申请日：2016-08-26
Applicant: HYUNDAI MOTOR COMPANY
Inventor： Byong Young Choi
CPC classification number: F01L13/0036 , F01L1/053 , F01L1/0532 , F01L1/08 , F01L1/185 , F01L1/2405 , F01L13/0005 , F01L2001/0473 , F01L2013/0052 , F01L2013/101 , F01L2105/00 , F01L2201/00
Abstract: A multiple variable valve lift apparatus may include a moving cam formed in a hollow cylindrical shape into which a camshaft is inserted. In particular, the moving cam rotates together with the camshaft, moves in an axial direction of the camshaft, and includes a cam guide protrusion and a plurality of cams realizing different valve lift with each other. Moreover, the apparatus includes: an operating unit selectively guiding the cam guide protrusion; a controller controlling the operating unit; a valve opening/closing unit contacting with any one cam of the cams; and at least two pins disposed at the operating unit so as to guide the cam guide protrusion. The cam guide protrusion includes an inserted portion being selectively inserted between the pins and a shift portion.
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公开(公告)号：US10024286B2
公开(公告)日：2018-07-17
申请号：US15200092
申请日：2016-07-01
Applicant: GT Technologies
Inventor： John E. Brune , Scott P. Smith
CPC classification number: F02M59/102 , F01L1/047 , F01L1/08 , F01L2107/00 , F02M39/02 , F02M59/06 , F02M2200/50 , F02M2200/852 , F04B1/0426
Abstract: A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly includes a bearing assembly having a shaft and a bearing rotatably supported by the shaft for engaging the lobe. An intermediate element has a first aperture, a shelf for engaging the fuel pump assembly, and a pair of arc-shaped bearing surfaces rotatably engaging the shaft when the bearing engages the lobe and the shelf engages the fuel pump assembly. An annular body has a second aperture and at least one stop member abutting the intermediate element to align the first aperture with the second aperture. An anti-rotation clip is disposed so as to extend through the apertures and cooperates with the stop member to substantially prevent rotational and axial movement of the intermediate element with respect to the body.
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