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公开(公告)号：US12071869B2
公开(公告)日：2024-08-27
申请号：US17598091
申请日：2020-03-24
Applicant: THYSSENKRUPP PRESTA TECCENTER AG , thyssenkrupp AG
Inventor： Marcel Weidauer , Jens Schirmer
CPC classification number: F01L13/0036 , F01L1/047 , F01L1/46 , F01L13/0015 , F01L2001/0473 , F01L2013/001 , F01L2013/0052 , F01L2013/0078 , F01L2820/031
Abstract: A slide cam system includes a camshaft comprising a carrier shaft with slide cam elements that each comprise a slotted switching member having a switching groove. The slide cam elements are displaceable axially relative to the carrier shaft by an actuator pin. A displacement element is arranged parallel with a longitudinal axis of the carrier shaft, and the displacement element is axially displaceable in a direction of the longitudinal axis. The displacement element has a first coupling pin arranged in a region of the first slide cam element and a second coupling pin arranged in a region of the second slide cam element. The coupling pins cooperate with a slotted switching member of the associated slide cam element such that as a result of the displacement element a movement initiated by the actuator pin of the first slide cam element can be transmitted to the second slide cam element.
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公开(公告)号：US20240247599A1
公开(公告)日：2024-07-25
申请号：US18415051
申请日：2024-01-17
Applicant: KTM AG
Inventor： Tobias Karl
CPC classification number: F01L1/047 , F01L1/08 , F01L7/18 , F01L2820/041
Abstract: A valve train device includes a shaft, wherein a number of actuation contours for actuating at least one actuation means of a valve of a combustion engine is arranged on the shaft so as to rotate therewith. A sensor unit with a number of sensors is provided, and each sensor of the number of sensors has a spatial sensing area for sensing a physical variable. In at least one axial position, at least one actuation contour of the number of actuation contours is arranged at least in part in the spatial sensing area of at least one sensor of the number of sensors.
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公开(公告)号：US11976578B2
公开(公告)日：2024-05-07
申请号：US18487033
申请日：2023-10-13
Inventor： Lap Lam Chui
Abstract: The present disclosure provide a driving device for a composite engine valve of a dedicated driving cam. The driving device includes a valve bridge, a dedicated driving cam, a driver, and a driving oil circuit. The driving oil circuit is configured to be intermittently in communication with a main piston hole and an auxiliary piston hole through a closure and disconnection of the driving oil circuit. The driver is fixedly mounted on a rocker arm shaft, which is simple in structure and low in cost. No motion friction between the driver and the rocker arm shaft, and the dedicated driving cam separating from the main piston when the driver is not in operation effectively reduce wear and noise between the dedicated driving cam and the main piston and improve engine power utilization. When the driver is in operation, the dedicated driving cam automatically adjusts a driving valve through a hydraulic gap, and a driving lift is not affected by an initial gap setting. The driving oil circuit is automatically drained once per revolution of a positive power cam, thus, a circulating flow of oil may not cause accumulation of impurities when the oil is too dirty, which improves working stability and reliability.
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4.发明授权公开(公告)号：US11946393B2
公开(公告)日：2024-04-02
申请号：US17756550
申请日：2020-11-26
Applicant: Piaggio & C. S.p.A.
Inventor： Walter Mariotti
CPC classification number: F01L1/34409 , F01L1/022 , F01L1/047
Abstract: A camshaft for a multi-cylinder internal combustion engine with poppet valves, comprising a main body, which is rotatable with respect to a first rotation axis, a first disk and means of the hydraulic type for varying the timing of said first disk with respect to said main body.
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公开(公告)号：US11913363B2
公开(公告)日：2024-02-27
申请号：US18211976
申请日：2023-06-20
Applicant: MAHLE International GmbH
Inventor： Tilo Hentschel , Mathias Rummel , Christoph Steinmetz
CPC classification number: F01L1/047 , B21D53/264 , F01L2301/00 , F01L2303/00
Abstract: A method for manufacturing a position indicator sensor wheel for a camshaft is disclosed. The position indicator includes an axially extending passage for connecting to the camshaft and at least one radially projecting tooth. The method includes providing a sheet from a sheet material; introducing the passage into the sheet; and roughening a radial inner surface of the passage in at least one rough portion.
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Patent Agency Ranking
公开(公告)号：US11872630B2
公开(公告)日：2024-01-16
申请号：US17145525
申请日：2021-01-11
Applicant: Miba Sinter Austria GmbH
Inventor： Alexander Mueller , Karl Dickinger , Wolfgang Siessl
CPC classification number: B22F5/08 , B22F3/10 , B22F3/162 , B22F5/00 , F01L1/047 , F01L1/3442 , B22F2998/10 , F01L2001/34426 , F01L2303/00
Abstract: A method without a calibration step produces a camshaft adjuster including a stator, a rotor rotatable relative thereto and a control valve, wherein the rotor and/or the stator is or are produced according to a powder-metallurgical process, wherein the stator in the region of a fitting surface for contacting the camshaft and/or the rotor in the region of a fitting surface for contacting the camshaft and/or in the region of a fitting surface for contacting the control valve and/or the control valve in the region of a sealing surface is or are produced having a tolerance so that a clearance fit with a maximum clearance of 100 μm is formed between the fitting surface for the camshaft and the camshaft and/or between the fitting surface for contacting the sealing surface of the control valve and the sealing surface of the control valve.
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公开(公告)号：US11859570B2
公开(公告)日：2024-01-02
申请号：US17793228
申请日：2021-02-15
Applicant: VITESCO TECHNOLOGIES GMBH
Inventor： Fabien Joseph , Stéphane Eloy
CPC classification number: F02D41/009 , F01L1/46 , F02D13/0215 , F01L1/047 , F01L2013/111 , F01L2013/113 , F01L2201/00 , F01L2820/041 , F01L2820/042 , F02D2041/0092
Abstract: A toothed wheel forming a target for a camshaft position sensor includes a circular body provided with two opposite main faces and is provided on its circumference with teeth. The series of teeth includes eight teeth, each tooth having, for a given first direction of rotation of the wheel, a rising edge and a falling edge and two neighboring teeth being separated by a recessed part. The edges of a first type, rising or falling, are evenly distributed at the periphery of the toothed wheel. The angular length of the recessed parts is greater than or equal to arctan(Llow/R)°CAM, where R is the radius and Llow is the minimum distance between two teeth to detect a low level, except for one recessed part, and the angular length of a tooth is greater than arctan(Lhigh/R)°CAM, except for one tooth, where Lhigh is the minimum length of a tooth allowing detection.
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公开(公告)号：US20230323797A1
公开(公告)日：2023-10-12
申请号：US18020888
申请日：2021-08-10
Applicant: thyssenkrupp Dynamic Components GmbH , thyssenkrupp AG
Inventor： Jens SCHIRMER
Abstract: The present invention relates to a sliding-cam camshaft assembly for an internal combustion engine, comprising at least a first sliding-cam camshaft with a longitudinal axis and a second sliding-cam camshaft with a longitudinal axis. The first sliding-cam camshaft comprises a support shaft and at least one sliding cam. The sliding-cam comprises a first cam and at least one second cam, and a shift gate. The second sliding-cam camshaft comprises a support shaft and at least one sliding cam. The sliding cam comprises a first cam and at least one second cam, and a shift gate. The first sliding-cam camshaft and the second sliding-cam camshaft are arranged parallel to one another. A transmission means for transmitting the switching state of the sliding-cam of the first sliding-cam camshaft to the sliding-cam of the second sliding-cam camshaft is arranged between the first sliding-cam camshaft and the second sliding-cam camshaft.
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公开(公告)号：US11761356B2
公开(公告)日：2023-09-19
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
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.
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公开(公告)号：US11746690B2
公开(公告)日：2023-09-05
申请号：US17724633
申请日：2022-04-20
Applicant: AIRDAPTIVE LLC
Inventor： Arjen Teake De Jong
Abstract: A combustion engine is provided having combustion chambers with reciprocating pistons, intake ports and exhaust ports. Transfer ports may be provided between adjacent combustion chambers to provide a transfer channel that closes during a high load mode of operation of the engine and opens during a partial load mode of operation. Also provided are embodiments in which exhaust ports of adjacent combustion chambers are joined into a common exhaust channel that communicates with an exhaust header of the engine through valve means that open during the high load mode of operation of said engine and close during a partial load mode of operation.
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