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1. 发明授权

US11519307B2 Valve actuation system comprising in-series lost motion components deployed in a pre-rocker arm valve train component and valve bridge 有权
公开(公告)号：US11519307B2
公开(公告)日：2022-12-06
申请号：US17805343
申请日：2022-06-03
申请人： Jacobs Vehicle Systems, Inc.
发明人： Justin D. Baltrucki
IPC分类号： F01L13/06 , F01L1/18 , F01L1/26 , F01L1/24 , F01L1/245 , F01L1/46 , F01L1/14 , F01L1/047
摘要： A valve actuation system comprises a valve actuation motion source configured to provide a main valve actuation motion and an auxiliary valve actuation motion for actuating at least one engine valve via a valve actuation load path. A lost motion subtracting mechanism is arranged in a pre-rocker arm valve train component and configured, in a first default operating state, to convey at least the main valve actuation motion and configured, in a first activated state, to lose the main valve actuation motion and the auxiliary valve actuation motion. Additionally, a lost motion adding mechanism is arranged in a valve bridge and configured, in a second default operating state, to lose the auxiliary valve actuation motion and configured, in a second activated state, to convey the auxiliary valve actuation motion, wherein the lost motion adding mechanism is in series with the lost motion subtracting mechanism in the valve actuation load path.

2. 发明授权

US10927723B2 Engine valve lifter assemblies 有权
公开(公告)号：US10927723B2
公开(公告)日：2021-02-23
申请号：US16628411
申请日：2018-07-03
申请人： Eaton Intelligent Power Limited
发明人： Venkat S. Sarati
IPC分类号： F01L1/245 , F01L9/02 , F01L1/047 , F01L1/14 , F01L1/46 , F01L13/00 , F01L13/06 , F01L1/24
摘要： An engine valve lifter assembly comprises a lifter body, a plunger assembly, and a spring. The lifter body comprises an oil control portion comprising an exterior surface, oil ports, and an interior oil chamber. A plunger interface end comprises an interior plunger chamber and a second spring seat. Selectively reciprocating plunger assembly comprises a piston end coupled to reciprocate in the oil chamber and a cam input end comprising a spring seat. A spring is biased between the spring seat and the second spring seat. The spring is configured to push the cam input end away from the plunger chamber. A sleeve is coupled around the oil control portion of the lifter body, and the sleeve is slidable between a lower position and an upper position to selectively block and unblock the oil ports.

3. 发明授权

US10746063B2 System and method for actuating an engine valve of an internal combustion engine 有权
公开(公告)号：US10746063B2
公开(公告)日：2020-08-18
申请号：US16110517
申请日：2018-08-23
申请人： C.R.F. Società Consortile per Azioni
发明人： Sergio Stucchi , Marcello Gargano , Raffaele Ricco , Onofrio De Michele
IPC分类号： F01L9/02 , F01L1/46 , F01L3/10 , F01L1/245 , F01L1/14 , F01L13/00 , F02D13/02
摘要： An actuating system of an engine valve comprises a movable member, for example, in the form of a master piston controlled by a cam of a camshaft. A slave piston is hydraulically controlled by the master piston by means of a volume of pressurized fluid, to open said engine valve against the action of a return spring. The system also comprises an auxiliary device for applying an additional force to the engine valve to keep the engine valve in a closed position. The auxiliary device is configured or controlled in such a way that the total force tending to keep the engine valve in its closed position varies during each rotation cycle of the cam. The total force is higher at least in one part of the rotation cycle of the cam wherein the engine valve must remain in its closed position, and is, instead, reduced at least in one part of the rotation cycle of the cam wherein the engine valve is not in its closed position.

4. 发明申请

US20200232351A1 TAPPET 审中-公开
公开(公告)号：US20200232351A1
公开(公告)日：2020-07-23
申请号：US16483117
申请日：2018-01-26
申请人： OTICS CORPORATION , KUBOTA CORPORATION
发明人： Kazunori KAWAHARA , Masayasu TAKAMI
IPC分类号： F01L1/245 , F01L1/047 , F01L1/14 , F01L1/18 , F01M9/10
摘要： In a tappet with a built-in lash adjuster, hydraulic oil is prevented from leaking from a low pressure chamber during a long-period stop.A tappet (10) includes a hydraulic lash adjuster (11) which supports a lower end portion of a push rod (96) and a tappet case (12) to which the lash adjuster (11) is internally fitted and which is reciprocally displaced in a vertical direction according to a rotating cam (85). An inner peripheral surface of the tappet case (12) is provided with an air-vent passage (34) through which air existing between the tappet case (12) and the lash adjuster (11) can be discharged upward when the lash adjuster (11) is being assembled.

5. 发明授权

US10422255B2 Hydraulic support element with a ring filter 有权
公开(公告)号：US10422255B2
公开(公告)日：2019-09-24
申请号：US15992739
申请日：2018-05-30
申请人： Schaeffler Technologies AG & Co. KG
发明人： Andreas Biermann , Matthias Ammann
IPC分类号： F01L1/46 , F01L1/245 , F01L1/14 , F01L1/18 , F01L1/24
摘要： A hydraulic support element for a variable valve train of an internal combustion engine, which has a cylindrical pot-shaped housing and a hollow cylindrical piston guided for movement in this housing and whose inner end is supported by a compression spring on the base wall of the housing. The outer end extends past the housing and is formed as a hemispherical bearing head. The interior is divided into an inner supply pressure space and an outer switching pressure space that are connected by inlet openings in the cylindrical side walls of the housing and the piston with a cylinder head side supply pressure line and by a non-return valve to a high-pressure space enclosed between the inner end of the piston and the base wall of the housing, or to a cylinder head side switching pressure line and also by a central hole formed in the bearing head to a rocker arm side switching pressure channel. To prevent the entry of harmful particles into the supply pressure space and/or the switching pressure space of the piston, the piston has a ring-shaped recess in its cylindrical side wall in the area of the inlet openings on the outside in the radial direction, and a filter element constructed as a ring filter is inserted into the ring-shaped recess of the piston with an axial positive-fit connection.

6. 发明申请

US20180355768A1 HYDRAULIC SUPPORT ELEMENT WITH A RING FILTER 审中-公开
公开(公告)号：US20180355768A1
公开(公告)日：2018-12-13
申请号：US15992739
申请日：2018-05-30
申请人： Schaeffler Technologies AG & Co. KG
发明人： Andreas Biermann , Matthias Ammann
IPC分类号： F01L1/46 , F01L1/245 , F01L1/14
CPC分类号： F01L1/46 , F01L1/143 , F01L1/146 , F01L1/185 , F01L1/24 , F01L1/2405 , F01L1/245 , F01L2001/186 , F01L2101/00 , F01L2103/00 , F01L2810/05
摘要： A hydraulic support element for a variable valve train of an internal combustion engine, which has a cylindrical pot-shaped housing and a hollow cylindrical piston guided for movement in this housing and whose inner end is supported by a compression spring on the base wall of the housing. The outer end extends past the housing and is formed as a hemispherical bearing head. The interior is divided into an inner supply pressure space and an outer switching pressure space that are connected by inlet openings in the cylindrical side walls of the housing and the piston with a cylinder head side supply pressure line and by a non-return valve to a high-pressure space enclosed between the inner end of the piston and the base wall of the housing, or to a cylinder head side switching pressure line and also by a central hole formed in the bearing head to a rocker arm side switching pressure channel. To prevent the entry of harmful particles into the supply pressure space and/or the switching pressure space of the piston, the piston has a ring-shaped recess in its cylindrical side wall in the area of the inlet openings on the outside in the radial direction, and a filter element constructed as a ring filter is inserted into the ring-shaped recess of the piston with an axial positive-fit connection.

7. 发明申请

US20180195420A1 LASH COMPENSATOR SPRING END CAP 审中-公开
公开(公告)号：US20180195420A1
公开(公告)日：2018-07-12
申请号：US15402576
申请日：2017-01-10
申请人： Schaeffler Technologies AG & Co. KG
发明人： John Stallmann
IPC分类号： F01L1/24 , F01L1/245 , F01L1/46
CPC分类号： F01L1/2416 , F01L1/08 , F01L1/143 , F01L1/146 , F01L1/2405 , F01L1/2422 , F01L1/245 , F01L9/023 , F01L13/065 , F01L2101/00 , F01L2105/00
摘要： A lash compensator for a valve train component of an internal combustion engine is provided that includes an end-cap arranged within a reverse-spring control valve assembly of an axially moveable piston. The piston has a first reservoir and an inner radial wall configured with a through-aperture. The reverse-spring control valve assembly has a control valve housing, a bias spring, an end-cap, and a closing body. The end-cap is configured with a cupped end; an inner side of the cupped end receives a second lower end of the bias spring, and an outer side of the cupped end engages an upper portion of the closing body. The end-cap minimizes or eliminates the variation in flow resistance caused by a variation in end-coil geometry of the second lower end of the bias spring.

8. 发明授权

US09816404B2 Hydraulic compensation element for the valve train of an internal compensation engine 有权
公开(公告)号：US09816404B2
公开(公告)日：2017-11-14
申请号：US15048136
申请日：2016-02-19
申请人： Schaeffler Technologies AG & Co. KG
发明人： Oliver Schnell , Peter Sailer
IPC分类号： F01L1/14 , F01L1/24 , F01L1/245
CPC分类号： F01L1/14 , F01L1/2405 , F01L1/245 , F01L2001/256 , F01L2105/00
摘要： In a hydraulic compensation element for the valve train of an internal combustion engine, with a circular cylindrical housing (32) that has, in its bore (35), an axially movable pressure piston (36) with a reservoir (37) for oil as a hydraulic medium, a sleeve-like deflection element for oil is arranged in the interior of the pressure piston (36). The oil can be introduced through a radial feed hole of the housing (32), a rising channel (42), and an end-side opening (46) of the deflection element into the reservoir (37) of the pressure piston (36). The deflection element is constructed as a circular cylindrical inner sleeve (40) that has, on one axial end, an oversize dimension relative to the inner diameter of the pressure piston (36), and the inner sleeve (40) is fixed in the pressure piston (36) with a positive and non-positive fit connection.

9. 发明申请

US20170218796A1 HYDRAULIC LASH ADJUSTER AND METHOD FOR USING HYDRAULIC LASH ADJUSTER 审中-公开
公开(公告)号：US20170218796A1
公开(公告)日：2017-08-03
申请号：US15501390
申请日：2014-09-17
申请人： NITTAN VALVE CO., LTD.
发明人： Hiroyuki OZAWA
IPC分类号： F01L1/245 , F01L1/20
CPC分类号： F01L1/245 , F01L1/20 , F01L1/2405 , F01L1/255 , F01L2103/00
摘要： Air is restrained from flowing into a high pressure chamber while the number of parts is reduced. A plunger is slidably fitted into a body; a reservoir is formed in the plunger with a communication hole formed in a head section thereof to allow communication between an inside and an outside; a high pressure chamber is formed in the body between the body and the plunger bottom section; an oil supply hole is formed in a plunger circumferential wall section; a return spring is interposed between the body and the plunger; a valve mechanism is disposed on the plunger bottom section; the reservoir is set such that a space continuously extends; and the oil supply hole is oriented outward in the radial direction as compared to an axis of the plunger.

10. 发明申请

US20090188457A1 Lash Adjuster 有权
标题翻译：睫毛调节器
公开(公告)号：US20090188457A1
公开(公告)日：2009-07-30
申请号：US12357477
申请日：2009-01-22
申请人： Hiroki Fujii , Katsuhiko Motosugi
发明人： Hiroki Fujii , Katsuhiko Motosugi
IPC分类号： F01L1/245
CPC分类号： F01L1/24 , F01L1/2405
摘要： A lash adjuster includes a cylindrical bottomed plunger mounted in a cylindrical bottomed body so as to be movable upward and downward and including a high-pressure chamber defined between an underside of the plunger and a bottom wall of the body to reserve an operating oil, a leak path defined by an inner circumference of the body and an outer circumference of the plunger so that the oil reserved in the high-pressure chamber leaks through the leak path with downward movement of the plunger, and a ring-shaped member located between the inner circumference of the body and the outer circumference of the plunger, normally projecting into the leak path and being elastically deformed radially inward or outward with increase in pressure of the oil at the high-pressure chamber side so as to be retreated from the leak path, thereby reducing flow resistance of the oil in the leak path.
摘要翻译：间隙调节器包括安装在圆柱形有底体中的圆柱形有底柱塞，以便可向上和向下移动，并且包括限定在柱塞的下侧和主体的底壁之间的高压室，以保留工作油，泄漏路径由本体的内圆周和柱塞的外周限定，使得保留在高压腔中的油通过柱塞的向下移动而通过泄漏路径泄漏，并且环形构件位于内部主体的周长和柱塞的外周，通常突出到泄漏路径中，并且随着高压室侧的油的压力的增加而径向向内或向外弹性变形以便从泄漏路径退回，从而降低泄漏路径中的油的流动阻力。

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