公开(公告)号：US10550738B2

公开(公告)日：2020-02-04

申请号：US16169578

申请日：2018-10-24

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： You Sang Son ,  Ingee Suh ,  Kiyoung Kwon ,  In Sang Ryu ,  Kyoung Pyo Ha ,  Dongheon Park ,  Wootae Kim ,  Back Sik Kim ,  Seung Jae Lee

IPC: F01L13/00 ,  F01L1/352 ,  F01L1/053 ,  F01L1/08 ,  F01L1/34 ,  F01L1/047 ,  F02D41/00

Abstract: A continuously variable valve duration apparatus may include: a camshaft; a cam unit on which a cam is formed, and the camshaft inserted to the cam; an inner wheel for transmitting rotation of the camshaft to the cam unit; a wheel housing into which the inner wheel is rotatably inserted and movable perpendicular to the camshaft; a guide shaft on which a guide screw thread is formed and disposed perpendicular to the camshaft; a worm wheel formed with an inner screw thread for engaging with the guide screw thread, and the worm wheel disposed within the wheel housing; and a control shaft on which a control worm for engaging with the worm wheel is formed.

公开(公告)号：US10473000B2

公开(公告)日：2019-11-12

申请号：US15834755

申请日：2017-12-07

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Soo Hyung Woo ,  Heechang Oh ,  Seung Kook Han ,  Ju Hun Lee ,  Wootae Kim

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02 ,  F01L13/00 ,  F01L1/047 ,  F01L1/053 ,  F01L1/08 ,  F01L1/18

Abstract: A multiple variable valve lift apparatus disposed at an intake part and an exhaust part of an engine includes: a moving cam rotating together with a camshaft, being movably disposed in an axial direction of the camshaft, and forming a plurality of cams for realizing valve lift to be different from each other and a cam guide protrusion; an operating unit selectively guiding the cam guide protrusion so as to move the moving cam in an axial direction of the camshaft; a controller controlling an operation of the operating unit; and a valve opening/closing unit opened/closed by contacting any one among the plurality of cams.

公开(公告)号：US10465573B2

公开(公告)日：2019-11-05

申请号：US15888563

申请日：2018-02-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shigehiro Sugihira ,  Noriyasu Adachi ,  Keisuke Sasaki ,  Takayoshi Kawai ,  Kaoru Otsuka ,  Shinji Sadakane ,  Hiroyuki Sugihara

IPC: F01L1/34 ,  F01L13/00 ,  F01L1/08

Abstract: In a system that selects a large-cam as a driving cam at a time of a start of an engine, when an engine stop request is output, it is determined whether there is a small-cam cylinder for which a small-cam is selected as the driving cam. In a case where it is determined that there is a small-cam cylinder, a switching command for switching the driving cam from the small-cam to the large-cam is output. When an engine start request is output, the above determination is performed again. In a case where it is determined that there is a small-cam cylinder, the switching command is output to all solenoid actuators again. In addition, the drive of the fuel injector is suspended until the switching operation of the driving cam is completed for all cylinders.

公开(公告)号：US10400640B2

公开(公告)日：2019-09-03

申请号：US15634164

申请日：2017-06-27

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Roland Eckinger

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

Abstract: A camshaft has a decompression device for an internal combustion engine, wherein a valve lifter is rotatably supported in a base circle of a cam, which can be brought into operative connection with a gas exchange valve via rotation. The valve lifter is operatively connected to a centrifugal fly weight, which is arranged coaxially to the camshaft and which is rotatably supported, in such a way that the valve lifter forms a contour of the base circle in the region of action with the gas exchange valve from a certain rotational speed of the camshaft. The camshaft has a cavity in the region of the centrifugal fly weight, to which cavity lubricant pressure can be applied. A radial first bore from the cavity to the centrifugal fly weight is arranged in the camshaft. A slideable element that can be displaced by the lubricant pressure is arranged in the first bore. By way of the design of the camshaft, an unstable centrifugal fly weight is stabilized and thus acoustics are improved.

公开(公告)号：US20190249606A1

公开(公告)日：2019-08-15

申请号：US16333249

申请日：2016-10-06

Applicant: VOLVO TRUCK CORPORATION

Inventor： Anders MOHLIN

IPC: F02D13/04 ,  F02D9/06 ,  F02D13/02 ,  F02D41/00 ,  F02D9/02 ,  F01L1/08 ,  F01L1/18 ,  F01L1/344 ,  F01L13/06

CPC classification number: F02D13/04 ,  F01L1/08 ,  F01L1/181 ,  F01L1/34 ,  F01L1/344 ,  F01L13/065 ,  F01L2013/105 ,  F01L2105/00 ,  F01L2800/00 ,  F01N13/107 ,  F01N2240/36 ,  F01N2590/08 ,  F02D9/02 ,  F02D9/06 ,  F02D13/0249 ,  F02D13/0276 ,  F02D41/0007 ,  F02D41/12 ,  F02D2009/0242 ,  F02D2700/04

Abstract: An internal combustion engine includes a cylinder including a piston connected to a rotatable crankshaft, an air guide arranged to guide an air flow to the cylinder an adjustable air flow restriction element arranged to restrict the How through the air guide, an exhaust guide being arranged to guide a gas flow from the cylinder, an adjustable exhaust flow restriction element arranged to restrict the flow through the exhaust guide, an exhaust valve arranged to control a communication between the cylinder and the exhaust guide, and an exhaust valve actuation assembly for actuating the exhaust valve so as to perform in each of a plurality of cycles of the cylinder an exhaust valve actuation sequence, wherein the exhaust valve actuation assembly is adapted to control the commencement of the exhaust valve actuation sequence to occur selectively at any crankshaft angle within a non-zero crankshaft angle interval.

公开(公告)号：US10352200B2

公开(公告)日：2019-07-16

申请号：US15763306

申请日：2016-07-25

Applicant: HONDA MOTOR CO., LTD.

Inventor： Fumio Sato ,  Hiroshi Takeda ,  Takuro Yoshimura ,  Koji Saito

IPC: F01L1/047 ,  F01L1/053 ,  F01L13/00 ,  F01L1/08 ,  B23K101/00 ,  B21D53/84 ,  F01L1/344

Abstract: The present invention provides a camshaft capable of suppressing an increase in the number of parts and the number of places to be processed, preventing scratching on a sliding surface that is a part of an outer peripheral surface of an outer shaft and on which an inner cam is rotated, and preventing occurrence of deformation in the entire camshaft after final assembly. A camshaft includes an inner cam that is attached from a radial direction of an outer shaft and that is fixed to an inner shaft with a pin inserted into the inner cam from the radial direction of the outer shaft in a cam surface of the inner cam.

公开(公告)号：US10337365B2

公开(公告)日：2019-07-02

申请号：US15884662

申请日：2018-01-31

Applicant: Bayerische Motoren Werke Aktiengesellschaft

Inventor： Sebastian Sperrhacke ,  Ferdinand Weidinger ,  Alexander Hiereth ,  Timo Klees

IPC: F01L1/34 ,  F01L13/00 ,  F02D41/24 ,  F01L1/053 ,  F02D13/06 ,  F01L1/18 ,  F01L1/46 ,  F02B75/20 ,  F02D41/00 ,  F01L1/08 ,  F02B75/18 ,  F01L1/24

Abstract: A control shaft of a cam shaft adjustment unit has axially spaced adjustment cams, which are designed in a first axial section of the control shaft for a continuous operation of a cylinder and in a second axial section for a cylinder shut-off. The adjustment cams for the continuous operation of a cylinder have, over the entire circumference of the cam circle, a radial extension which is greater than a zero stroke extension and the adjustment cams for the cylinder shut-off have, around their circumference, a shut-off section of the cam circle with a radial extension which is less than or equal to the zero stroke extension. The control shaft has a stop that reduces the rotation in both circumferential directions and functions as the calibration point for an engine electronics system.

公开(公告)号：US10329972B2

公开(公告)日：2019-06-25

申请号：US15569453

申请日：2015-06-08

Applicant: Shanghai Universoon Auto Parts Co., Ltd.

Inventor： Yong Xi ,  Zheng Xi

IPC: F01L9/02 ,  F01L13/06 ,  F02D13/04 ,  F01L1/08 ,  F01L1/18 ,  F01L1/26

Abstract: A single valve compression release bridge brake is provided. The single valve compression release bridge brake includes a braking piston (160) integrated into an inner end of a valve bridge (400) which is located under a rocker arm (210) of an engine. The braking piston (160) is slidably disposed in a braking piston bore (190) opened downwards from the inner end of the valve bridge (400). The lower end of the braking piston (160) is connected to the inner exhaust valve (3001). Oil is supplied to the braking piston bore (190) in the valve bridge (400). The inner end of the valve bridge (400) above the braking piston (160) is pushed upwards against the rocker arm (210) by oil pressure, and a hydraulic linkage is formed between the braking piston (160) and the valve bridge (400). A braking cam lobe (232, 233) actuates the rocker arm (210), the inner end of the valve bridge (400), the hydraulic linkage, the braking piston (160), and finally the inner exhaust valve (3001) for the single valve compression release bridge brake.

公开(公告)号：US10316711B2

公开(公告)日：2019-06-11

申请号：US15375968

申请日：2016-12-12

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Davide Di Nunno

IPC: F01L13/00 ,  F01L1/46 ,  F02D13/02 ,  F01L1/08 ,  F01L1/18 ,  F02M26/05 ,  F02M26/25 ,  F01L1/053

Abstract: An internal combustion engine includes a cam shifting system having a shifting unit rotatably fixed and axially moveable with respect to a camshaft. The shifting unit includes at least two cams configured to be selectively brought in contact with a cam follower and provided with a base circle and with at least one cam lobe. The shifting unit is provided with at least one groove having a shifting portion. A driving pin is operable to be selectively engaged with and disengaged from the shifting portion of the groove. Engagement between the driving pin and the shifting portion of the groove moves the shifting unit with respect to the camshaft. During the movement of the shifting unit the cam follower engages at least a portion of at least one cam lobe.

公开(公告)号：US20190153913A1

公开(公告)日：2019-05-23

申请号：US16169578

申请日：2018-10-24

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： You Sang SON ,  Ingee SUH ,  Kiyoung KWON ,  In Sang RYU ,  Kyoung Pyo HA ,  Dongheon PARK ,  Wootae KIM ,  Back Sik KIM ,  Seung Jae LEE

IPC: F01L13/00 ,  F01L1/053 ,  F01L1/08 ,  F01L1/34

CPC classification number: F01L13/0015 ,  F01L1/0532 ,  F01L1/08 ,  F01L1/34 ,  F01L1/352 ,  F01L2001/0476 ,  F01L2001/0537 ,  F01L2013/0084 ,  F01L2013/103 ,  F02D41/009

Abstract: A continuous variable valve duration apparatus may include: a camshaft; a cam unit on which a cam is formed, and the camshaft inserted to the cam; an inner wheel for transmitting rotation of the camshaft to the cam unit; a wheel housing into which the inner wheel is rotatably inserted and movable perpendicular to the camshaft; a guide shaft on which a guide screw thread is formed and disposed perpendicular to the camshaft; a worm wheel formed with an inner screw thread for engaging with the guide screw thread, and the worm wheel disposed within the wheel housing; and a control shaft on which a control worm for engaging with the worm wheel is formed.