公开(公告)号：US09869253B2

公开(公告)日：2018-01-16

申请号：US15157257

申请日：2016-05-17

Applicant: Hyundai Motor Company

Inventor： Byong Young Choi ,  Seung Kook Han ,  Soo Hyung Woo ,  Wootae Kim

IPC: F01L1/04 ,  F02D13/02 ,  F01L1/053 ,  F01L1/047 ,  F01L1/344 ,  F01L13/00 ,  F01L1/08 ,  F01L1/18 ,  F01L1/26

CPC classification number: F02D13/0207 ,  F01L1/053 ,  F01L1/08 ,  F01L1/185 ,  F01L1/267 ,  F01L1/34413 ,  F01L13/0005 ,  F01L13/0036 ,  F01L13/0042 ,  F01L2001/0473 ,  F01L2013/0052 ,  F01L2013/101 ,  F01L2105/00 ,  Y02T10/18

Abstract: A multiple variable valve lift apparatus may include a first moving cam provided to rotate together with a camshaft and move in an axial direction of the camshaft, and configured to form a first cam guide protrusion and a plurality of cams realizing different valve lifts from each other, a second moving cam provided to rotate together with a second camshaft and move in an axial direction of the second camshaft, and configured to form a second cam guide protrusion and a plurality of cams realizing different valve lifts from each other, a first operating device operated to move the first moving cam in a first direction, a second operating device operated to move the second moving cam in a second direction, a controller configured to control operations of the first operating device and the second operating device, and a valve opening/closing device.

公开(公告)号：US20170362971A1

公开(公告)日：2017-12-21

申请号：US15695627

申请日：2017-09-05

Applicant: PACBRAKE COMPANY

Inventor： Vincent Meneely ,  Robert Price

IPC: F01L13/06 ,  F01L1/26 ,  F01L1/18 ,  F02D13/04 ,  F02B75/02

CPC classification number: F01L13/065 ,  F01L1/08 ,  F01L1/146 ,  F01L1/18 ,  F01L1/181 ,  F01L1/20 ,  F01L1/26 ,  F01L13/06 ,  F01L2001/054 ,  F01L2013/105 ,  F01L2105/00 ,  F01L2820/01 ,  F02B75/02 ,  F02B2075/027 ,  F02D13/04

Abstract: A compression-release brake system is provided that includes a lost motion exhaust rocker assembly, an actuation piston, and a reset device. The actuation piston includes an actuation piston body that is slidably received by the rocker arm to define a piston cavity in the rocker arm and is movable between piston retracted and extended positions. The actuation piston is configured to be operatively associated with the exhaust valve to permit unseating of the exhaust valve from the seated state. An actuation piston check valve is configured to move between closed and open positions to permit hydraulic fluid flow through an actuation piston communication port to the piston cavity. The reset device includes a reset check valve and a reset pressure control spring for applying a biasing force to the reset check valve to urge the reset check valve toward an open position.

公开(公告)号：US09840943B2

公开(公告)日：2017-12-12

申请号：US15232678

申请日：2016-08-09

Applicant: Ford Global Technologies, LLC

Inventor： John Eric Rollinger ,  Paul A. Pietrzyk ,  Ed Badillo ,  Jamie Charles Hanshaw

IPC: F01L1/34 ,  F01L1/344 ,  F01L1/08 ,  F01L1/053

CPC classification number: F01L1/34409 ,  F01L1/08 ,  F01L1/344 ,  F01L1/3442 ,  F01L2001/0535 ,  F01L2001/3443 ,  F01L2001/34433 ,  F01L2001/34453 ,  F01L2250/02 ,  F01L2250/04 ,  F01L2250/06 ,  F01L2800/00

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.

公开(公告)号：US09790819B2

公开(公告)日：2017-10-17

申请号：US14864841

申请日：2015-09-24

Applicant: HYUNDAI MOTOR COMPANY

Inventor： JangSu Lee ,  Hyo Sang Cho ,  Hyoung Hyoun Kim

IPC: F01L1/14 ,  F01L1/24 ,  F01L1/047

CPC classification number: F01L1/24 ,  F01L1/047 ,  F01L1/053 ,  F01L1/08 ,  F01L1/185 ,  F01L1/2405 ,  F01L13/0031 ,  F01L2001/467

Abstract: A variable valve lift system may include a roller finger follower having an end connected with a valve and a roller mounted thereto. A hydraulic lash adjuster supports another end of the roller finger follower and has operating modes which are changed to a high lift mode or a low lift mode according to supplied hydraulic pressure to change a height of the hydraulic lash adjuster. A hydraulic pressure supplying portion supplies the hydraulic pressure to the hydraulic lash adjuster. A cam is mounted to a camshaft and contacts the roller of the roller finger follower. The cam has a first ramp and a second ramp formed thereon.

公开(公告)号：US20170284314A1

公开(公告)日：2017-10-05

申请号：US15366101

申请日：2016-12-01

Applicant: Hyundai Motor Company

Inventor： You Sang SON ,  Woong Kim ,  Kyoung Pyo Ha ,  Back Sik Kim ,  Dongheon Park

IPC: F02D13/02 ,  F01L1/08 ,  F01M9/10 ,  F01M11/02 ,  F01L1/053 ,  F01L1/344

CPC classification number: F02D13/0219 ,  F01L1/047 ,  F01L1/053 ,  F01L1/08 ,  F01L1/12 ,  F01L1/34413 ,  F01L13/0015 ,  F01L2001/0537 ,  F01M9/10 ,  F01M9/102 ,  F01M9/109 ,  F01M11/02 ,  F01M2011/026 ,  Y02T10/18

Abstract: A continuous variable valve timing apparatus may include a camshaft, a cam device on which a cam is formed respectively and of which the camshaft is inserted thereto, wherein a relative phase angle with respect to the camshaft is variable, an inside bracket configured to transmit rotation of the camshaft to the cam device, a lifter in which the inside bracket is rotatably inserted therein and on which a cylinder opening and a shaft opening are formed thereon, a control shaft parallel to the camshaft and to which a control rod, inserted into the shaft opening, is eccentrically formed, a control cylinder on which a control rod opening where the control rod is inserted therein is formed and inserted into the cylinder opening, a guide portion guiding movement of the lifter and a controller selectively rotating the control shaft, wherein the lifter may move.

公开(公告)号：US20170248073A1

公开(公告)日：2017-08-31

申请号：US15484388

申请日：2017-04-11

Applicant: Eaton Corporation

Inventor： James E. McCarthy

IPC: F02B39/04 ,  F16J1/10

CPC classification number: F01L13/0005 ,  F01L1/08 ,  F01L1/18 ,  F01L1/185 ,  F01L1/2405 ,  F01L13/0036 ,  F01L2001/186 ,  F01L2013/001 ,  F01L2101/00 ,  F01L2201/00 ,  F01L2800/11 ,  F01L2820/01 ,  F01L2820/043 ,  F01L2820/045

Abstract: A modified rocker assembly having an offset end is designed for engine heads having an obstruction preventing use of a symmetric switching rocker arm. The modified rocker assembly has an obstructed side and a non-obstructed side and has an outer structure with a first end, and an inner rocker structure fitting within the outer structure, the inner structure also having a first end. The modified rocker assembly has an axle pivotally connecting the first ends of inner structure to the outer structure, such that the inner structure pivots within the outer structure around the axle. At least one torsion spring on one side of the axle rotationally biases the inner structure relative to the outer structure. The outer structure is offset on the obstructed side as it extends from the second end toward the first end, creating the first offset portion to provide additional clearance on the obstructed side.

公开(公告)号：US09745875B2

公开(公告)日：2017-08-29

申请号：US14422501

申请日：2012-08-22

Applicant: Toshiyuki Yano ,  Yoshiaki Miyazato ,  Motohiro Yuge

Inventor： Toshiyuki Yano ,  Yoshiaki Miyazato ,  Motohiro Yuge

IPC: F01L1/34 ,  F01L13/00 ,  F01L1/08 ,  F01L1/26 ,  F01L1/18 ,  F01L1/24 ,  F01L1/047

CPC classification number: F01L13/0057 ,  F01L1/08 ,  F01L1/185 ,  F01L1/2405 ,  F01L1/267 ,  F01L13/0005 ,  F01L2001/0473 ,  F01L2820/035

Abstract: A variable valve gear for an internal combustion engine includes: a cam base portion integrally or separately provided in a camshaft, and immovably fixed to the camshaft; a cam lobe portion connected to the cam base portion so as to swing and shift between a first state where the cam lobe portion is positioned to project from an outer circumference of the base portion and a second state where the cam lobe portion is positioned to be lower than the cam base portion in the first state; a lock mechanism locking the cam lobe portion in the first and second state; and a biasing member biasing the cam lobe portion to be shifted to the first state, to such an extent that the cam lobe portion is shifted to the second state by reaction force from a cam follower when the locking mechanism is unlocked.

公开(公告)号：US20170191386A1

公开(公告)日：2017-07-06

申请号：US15464158

申请日：2017-03-20

Applicant: Ford Global Technologies, LLC

Inventor： Paul A. Pietrzyk ,  Ed Badillo ,  John Eric Rollinger

IPC: F01L1/344 ,  F01L1/047

CPC classification number: F01L1/3442 ,  F01L1/047 ,  F01L1/08 ,  F01L1/344 ,  F01L1/34409 ,  F01L2001/34426 ,  F01L2001/3443 ,  F01L2001/3444 ,  F01L2001/34453 ,  F01L2001/34459 ,  F01L2001/34463 ,  F01L2250/02 ,  F01L2250/04 ,  F01L2250/06 ,  F01L2800/01 ,  F01L2800/02 ,  F01L2800/03

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.

公开(公告)号：US20170159790A1

公开(公告)日：2017-06-08

申请号：US15324410

申请日：2015-05-28

Applicant: SEOJINCAM CO., LTD.

Inventor： Yong Kyoon KIM ,  Yung Sang PARK ,  Jun Ho SONG ,  Keun Ho KANG ,  Jong Hun SONG

IPC: F16H53/02 ,  B21D53/84 ,  B23K20/02 ,  F01L1/047

CPC classification number: F16H53/025 ,  B21D53/845 ,  B23K20/02 ,  F01L1/047 ,  F01L1/08 ,  F01L13/0036 ,  F01L2001/0471 ,  F01L2001/0473 ,  F01L2103/00

Abstract: Provided is a concentric camshaft and a method of manufacturing the same, in which at least one of a fixed cam and a rotatable cam is a sintered cam configured to fix the cam and an inner piece through diffusion bonding, capable of reducing a machining amount, simplifying a manufacturing process because a heat treatment process for improving cam surface hardness is unnecessary, and being applied to an engine having a small space because the weight is reduced through a weight-reducing structure of a surface of the cam and a width of the inner piece is reduced.

公开(公告)号：US09638074B1

公开(公告)日：2017-05-02

申请号：US14321177

申请日：2014-07-01

Applicant: Kevin Ploughe

Inventor： Kevin Ploughe

IPC: F01L1/04 ,  F01L1/34

CPC classification number: F01L1/022 ,  F01L1/047 ,  F01L1/08 ,  F01L2001/054 ,  F01L2250/02 ,  F01L2250/04 ,  F01L2820/01

Abstract: A dual-lobed cam for a camshaft of an internal combustion engine is presented herein. The camshaft includes an elongated shaft rotationally disposed in relation to a crankshaft via a timing assembly. The dual-lobed cam includes an enlarged base circle region circumferentially disposed around the camshaft, with two oppositely disposed lobes extending therefrom. The lobes define lift regions off of the base circle which drivingly engage a valve assembly. The camshaft disclosed herein may include a rotational speed of one-fourth the rotational speed of a crankshaft or crankshaft sprocket, thereby preserving power and increasing efficiency of the overall engine.