公开(公告)号：US12180862B2

公开(公告)日：2024-12-31

申请号：US18415051

申请日：2024-01-17

Applicant: KTM AG

Inventor： Tobias Karl

IPC: F01L1/047 ,  F01L1/08 ,  F01L13/00 ,  F01L1/344 ,  F01L7/18

Abstract: A valve train device includes a shaft having one or more actuation contours for actuating at least one actuation element of a valve of a combustion engine, and the actuation contours being arranged on the shaft so as to rotate therewith. A sensor unit including one or more sensors is provided, and each of the one or more sensors has a spatial sensing area for sensing a physical variable. In at least one axial position, an actuation contour of the one or more actuation contours is arranged at least partially in the spatial sensing area of a sensor of the one or more sensors.

公开(公告)号：US11614018B2

公开(公告)日：2023-03-28

申请号：US17643223

申请日：2021-12-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takato Hatano ,  Masakazu Tabata

IPC: F01N13/10 ,  F02D13/02 ,  F01L1/08

Abstract: An exhaust passage structure of an internal combustion includes a first merging passage, a second merging passage, and a third merging passage connecting a third gathering portion in which the exhaust gas flowing through the first merging passage and the exhaust gas flowing through the second merging passage gather and a turbine of a turbocharger. The first merging passage and the second merging passage have respective narrowed portions in which passage cross-sectional areas are minimized. When a total value of passage cross-sectional areas of inlets of exhaust ports in one cylinder is set as a reference passage cross-sectional area A, and the passage cross-sectional areas of the narrowed portions of the first merging passage and the second merging passage are set as narrowed cross-sectional areas B, the exhaust passage structure is configured such that the relationship of 0.5≤(B/A)≤1 is established.

公开(公告)号：US11255226B2

公开(公告)日：2022-02-22

申请号：US16409614

申请日：2019-05-10

Applicant: Jacobs Vehicle Systems, Inc.

Inventor： Justin D. Baltrucki ,  Gabriel S. Roberts ,  Matei Alexandru ,  John Mandell

IPC: F01L1/34 ,  F01L1/24 ,  F01L1/08 ,  F01L1/26 ,  F01L9/12 ,  F16K31/60 ,  F01L13/06 ,  F01L1/053 ,  F01L1/047 ,  F01L13/00

Abstract: 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 dedicated cam environments including Type II valvetrain architectures. In one implementation, a lash adjuster loading component, which may comprise a stroke-limited spring biased piston associated with the main event valvetrain keeps the lash adjuster under a constant compressive force to prevent jacking.

公开(公告)号：US20220010702A1

公开(公告)日：2022-01-13

申请号：US16922638

申请日：2020-07-07

Applicant: Ford Global Technologies, LLC

Inventor： Brad Alan VanDerWege ,  Michael Shelby

IPC: F01L13/08 ,  F01L9/02 ,  F02N11/08 ,  F01L1/08 ,  F01L13/00

Abstract: Methods and systems are provided for providing compression release during a stop/start event in an engine. In one example, a method includes: responsive to a request for a stop/start event in an engine with a continuously variable valve lift (CVVL) system including a compression release hydraulic valve actuator coupled to a valve of a first cylinder, determining a desired stop position of the engine; and prior to restarting the engine during the stop/start event, adjusting the compression release hydraulic valve actuator to open the valve during a compression stroke of the first cylinder. In this way, an amount of torque used to restart the engine may be reduced.

公开(公告)号：US20210388741A1

公开(公告)日：2021-12-16

申请号：US17270394

申请日：2019-08-08

Applicant: Daimler AG

Inventor： Johannes ERNST ,  Franz HUBER ,  Jochen HUFENDIEK ,  Christian LORENZ ,  Tilmann ROEMHELD ,  Frank STRAUSS ,  Ruediger WEISS ,  Hardy WEYMANN

IPC: F01L1/24 ,  F01L1/047 ,  F01L1/08 ,  F01L13/08

Abstract: An internal combustion engine for a motor vehicle includes a crankshaft, a camshaft, a cylinder, a piston movably disposed in the cylinder and coupled to the crankshaft for driving the crankshaft, a first gas exchange valve which is assigned to the cylinder, a first valve clearance compensation device, where via the first valve clearance compensation device the first gas exchange valve is displaceable between a first open position and a first closed position by a first cam of the camshaft, and a control unit. The control unit is configured to align the camshaft such that the first valve clearance compensation device is pressure-loaded in the idle state of the crankshaft by a plateau area assigned to the first cam to hold the first gas exchange valve in the first open position.

公开(公告)号：US11028736B2

公开(公告)日：2021-06-08

申请号：US16094492

申请日：2017-04-21

Applicant: EATON INTELLIGENT POWER LIMITED

Inventor： Nicola Andrisani ,  Fabiano Contarin ,  Emanuele Raimondi ,  Majo Cecur ,  Alessio Lorenzon

IPC: F01L1/18 ,  F01L13/00 ,  F01L1/08 ,  F01L1/24

Abstract: A valve train assembly includes: a first group of one or more dual body rocker arms and a second group of one or more dual body rocker arms, the first group for controlling one or more valves of a first cylinder and the second group for controlling one or more valves of a second cylinder, each of the dual body rocker arms including a first body, a second body, and a latching arrangement for latching and unlatching the first body and the second body; and an actuator arrangement external to the dual body rocker arms for controlling the latching arrangement, the actuator arrangement including a shaft having a first set of one or more cams for controlling the latching arrangements of the first group of one or more dual body rocker arms and a second set of one or more cams for controlling the latching arrangements of the second group.

公开(公告)号：US20210115886A1

公开(公告)日：2021-04-22

申请号：US17068032

申请日：2020-10-12

Applicant: Volvo Car Corporation

Inventor： Mats Morén

IPC: F02M39/02 ,  F01L1/053 ,  F01L1/08

Abstract: A force transfer arrangement for transferring a force from a rotating camshaft to an output device, that is able to reduce the transversal force on the camshaft. The proposed connection device force transfer arrangement is configured to cause forces to act on the camshaft from substantially opposite directions which effectively produces a resultant force on the camshaft to be close to zero, or at least be reduced compared to prior art force transfer solutions. Thus, the transverse forces on the camshaft and therefore on e.g. bearings supporting the camshaft are reduced thereby the lifetime of the bearings is prolonged.

公开(公告)号：US20210095584A1

公开(公告)日：2021-04-01

申请号：US17118647

申请日：2020-12-11

Applicant: Eaton Intelligent Power Limited

Inventor： Mark Vanwingerden

IPC: F01L13/06 ,  F01L1/047 ,  F01L1/08 ,  F01L1/18 ,  F01L13/00

Abstract: A switching rocker arm assembly includes an inner arm, an outer arm pivotably secured to the inner arm, and a camshaft having a first lobe to contact one of the outer arm and the inner arm to perform a normal valve motion, and a second lobe to contact the other of the outer arm and the inner arm to perform at least one of: a full cycle bleeder brake exhaust valve motion, a partial cycle bleeder brake exhaust valve motion, an additional engine brake intake valve motion, and a compression relief braking exhaust valve motion.

公开(公告)号：US10941680B2

公开(公告)日：2021-03-09

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

IPC: F01L13/00 ,  F01L1/08 ,  F01L1/18 ,  F01L1/24 ,  F01L1/46 ,  F01L13/06 ,  F01L1/14

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.

公开(公告)号：US10557385B2

公开(公告)日：2020-02-11

申请号：US15804901

申请日：2017-11-06

Applicant: BorgWarner Inc.

Inventor： Larry A. Pritchard ,  Thomas R. Benner ,  Christopher J. Pluta

IPC: F01L13/00 ,  F01L1/348 ,  F01L1/047 ,  F01L1/352 ,  F01L1/08 ,  F01L1/34 ,  F01L1/344

Abstract: An engine variable camshaft timing phaser (10) includes a sprocket (12) and a planetary gear assembly (14). The sprocket (12) receives rotational drive input from an engine crankshaft. The planetary gear assembly (14) includes two or more ring gears (26, 28), multiple planet gears (24), a sun gear (22), and a wrap spring (76). One of the ring gears (26, 28) receives rotational drive input from the sprocket (12) and one of the ring gears (26, 28) transmits rotational drive output to an engine camshaft. The sun gear (22) engages with the planet gears (24). The wrap spring (76) experiences expansion and contraction exertions to permit advancing and retarding engine valve opening and closing, and to prevent advancing and retarding engine valve opening and closing.