Patent application number | Description | Published |
20090090320 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus according to an exemplary embodiment of the present invention may include an outer part, an inner part disposed in the outer part and connected to a valve, a latching part that is disposed in the outer part and selectively connects the outer part and the inner part, a camshaft supplying torque, a low lift cam that is configured to the camshaft and selectively supplies torque to the inner part, and a high lift cam that is configured to the camshaft and supplies torque to the outer part. | 04-09-2009 |
20090151669 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus of an engine includes: a control shaft; a driving arm rotatable around the control shaft by a cam of a camshaft; a first rocker arm rotatable around the control shaft, that is operated by the driving arm so as to drive a first valve through a first swing arm; a second rocker arm rotatable around the control shaft, that is operated by the driving arm so as to drive a second valve through a second swing arm; and a mediating device rotatable around the control shaft, that transmits a movement of the driving arm to the first and second rocker arms. | 06-18-2009 |
20090151676 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus includes a camshaft with a first cam lobe and a second cam lobe, a cam follower with a first follower contacting the first cam lobe and a second follower contacting the second cam lobe, a connection rotatably connecting the first follower to the second follower, a main body supporting the first follower and the second follower, a connector selectively connecting the first follower and the second follower to the main body, a lost motion elastic member provided on the main body for supplying restoring force to the first follower and the second follower, and a valve configured to be opened and closed by the cam follower. | 06-18-2009 |
20090183703 | Continuous Variable Valve Lift Apparatus - The present invention relates to a continuously variable valve lift apparatus that includes an output cam driving unit for transmitting a rotation, an output cam that receives the rotation from the output cam driving unit and rotates about an axis at a predetermined angle, an output cam position controlling unit for controlling the axis of rotation of the output cam, and a valve opening unit that is operated by the output cam. | 07-23-2009 |
20090241876 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus includes an input cam disposed to a input shaft, a valve opening unit, a control shaft parallel to the input shaft, an input link rotatably coupled to the control shaft and contacting the input cam, a control link connected with the input link and eccentrically connected to the control shaft, a connecting link connected with the control link, and a lift arm that is rotatably coupled to the control shaft, is connected with the connecting link, and drives the valve opening unit. | 10-01-2009 |
20090272345 | CONTINUOUS VARIABLE VALVE LIFT APPARATUS - A continuously variable valve lift apparatus includes an input cam disposed to a camshaft and rotating, a follower supporting portion rotatably disposed to the camshaft for changing a relative angle of the follower with respect to the camshaft, a follower that includes a center shaft, is connected with the follower supporting portion via the center shaft, and pivots around the center shaft by receiving rotation movement of the input cam, a straight line guide, an output cam that contacts the follower and reciprocates along the straight line guide, and a valve opening unit that is opened by pushing of the output cam. | 11-05-2009 |
20100139589 | Variable Valve Lift Apparatus - A variable valve lift apparatus may include an inner body of which an end is pivotally connected to an anchor, an outer body of which an end is pivotally connected to the anchor, a roller finger follower of which an end is pivotally connected to a hydraulic lash adjuster, wherein a portion of the roller finger follower is pivotally connected to the outer body, a valve disposed to the other end of the roller finger follower, and a connecting unit selectively connecting the inner body and the outer body. | 06-10-2010 |
20130146006 | Continuous Variable Valve Duration Apparatus - A continuous variable valve duration apparatus may vary an opening duration of a valve. The continuous variable valve duration apparatus may include a camshaft in which a camshaft slot is formed, a cam portion of which a cam and a cam slot are formed thereto and of which a rotation center is identical to a rotation center of the camshaft and the cam portion of which a phase angle to the cam shaft is variable, and a duration control portion which varies the phase angle between the camshaft slot and the cam slot. | 06-13-2013 |
20140182530 | INSPECTION SYSTEM FOR CONTINUOUS VARIABLE VALVE LIFT DEVICE - An inspection system for a continuous variable valve lift device includes: a drive motor configured to rotate a cam; a sensor unit including at least one sensor configured to output an electrical signal corresponding to rotational displacements at both ends of a swing arm which opens and closes a valve by receiving rotational motion of the cam through the continuous variable valve lift device; and an inspector configured to measure and inspect a valve lift of the continuous variable valve lift device by receiving and calculating the electrical signal of the sensor unit, and is installed in a vehicle engine assembly line to accurately measure and inspect the valve lift after the continuous variable valve lift device is assembled. | 07-03-2014 |
Patent application number | Description | Published |
20150024887 | HYDRAULIC TIMING CHAIN TENSIONER AND TIMING CHAIN SYSTEM - The present invention relates to a timing chain system including a hydraulic pressure timing chain tensioner autonomously controlling a hydraulic pressure for maintaining tension of a timing chain to effectively operate. The system may include: a crankshaft sprocket; a camshaft sprocket controlling exhaust or intake timing of the engine; a timing chain operably connecting the crankshaft and camshaft sprockets; a chain guide for the timing chain; a chain tensioner pushing the chain guide inward; and an oil supply unit for the chain tensioner. The chain tensioner may include a housing, an operating unit case fixed to the housing, a reciprocating plunger inserted into the operating unit case, a high pressure chamber, a low pressure chamber, a supply hydraulic path supplying oil from the oil supply unit to the low pressure chamber, and a regulator controlling hydraulic pressure of the low pressure chamber. | 01-22-2015 |
20150059668 | CONTINUOUS VARIABLE VALVE LIFT DEVICE - A continuous variable valve lift device includes a rotatable input shaft, an input cam rotating with the input shaft, a control shaft rotatably disposed parallel to the input shaft, an input rocker mounted to, and rotatable round, the control shaft so as to be in contact with the input cam to have a torque forwarded thereto from the input cam, a control link mounted to the control shaft eccentrically, an input link having one end connected to the input rocker, a connecting rod connected between the other end of the input link and the control link, and a valve operating unit mounted to rotate as one unit with the control shaft for operating the valve, the valve operating unit having a control long hole for movably inserting the connecting rod therein, for improving the fuel consumption at a low load operation range of the engine. | 03-05-2015 |
20160090877 | CONTINUOUS VARIABLE VALVE DURATION APPARATUS AND ENGINE PROVIDED WITH THE SAME - A continuous variable valve duration apparatus includes a camshaft. A slider, which is mounted to the camshaft, has a camshaft sliding key and a cam portion of which a cam and a cam sliding key are formed thereto. The camshaft is inserted into the cam portion, and a relative phase between the cam and the camshaft is variable. A roller ring is connected with the camshaft sliding key and the cam sliding key. The roller ring is rotatably inserted into a roller ring guider, and the roller ring guider slidably inserted into a cylinder head. A control portion selectively changes a position of the roller ring guider to control a rotation center position of the roller ring. | 03-31-2016 |