| Patent application number | Description | Published |
|---|
| 20090145389 | ROCKER ARM FOR VARIABLE VALVE LIFT, AND VARIABLE VALVE LIFT APPARATUS HAVING THE SAME - The present invention provides a variable valve lift including a housing, a plurality of swing arms that are rotatably arranged at the housing, and a plurality of latching mechanisms for selectively latching the plurality of swing arms. | 06-11-2009 |
| 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 |
| 20090151673 | VARIABLE VALVE SYSTEM - A variable valve system includes a variable valve lifter for changing a first lift amount of one or more valves at a predetermined engine speed; a variable valve timing portion for controlling opening and closing timing of one or more valves; and a cylinder deactivation portion that changes a second lift amount of two or more valves in an alternating pattern. | 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 |
| 20090255496 | CONTINUOUS VARIABLE VALVE LIFT DEVICE - A continuous variable valve lift device includes a valve, which opens/closes a channel by means of reciprocation, a control shaft, which is mounted so as to be able to move toward or away from a reciprocation central axis of the valve, a pivotable shoe, which is pivotably coupled to the control shaft, includes a cam insertion part in a recess or through-hole shape and a slide face slidably contacting an end of the valve, and reciprocates the valve when pivoted, and a drive cam, which comes into contact with an inner wall of the cam insertion part, and pivots the pivotable shoe. Thereby, the continuous variable valve lift device can freely adjust a lift amount and a lift time of the valve without changing positions of the drive cam and camshaft, and thus be easily applied to an existing engine. | 10-15-2009 |
| 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 |
| 20100139588 | Continuously Variable Valve Lift Apparatus - A continuously variable valve lift apparatus may include a control shaft, a camshaft in which a cam is formed thereto, an eccentric member connected to the control shaft, a follower slidably contacting the cam, a follower arm that is extended from a follower ring mounted around the eccentric member, a variable ring slidably mounted on the eccentric member and a variable arm extended from the variable ring, an output ring slidably mounted on the control shaft and an output arm extended from the output ring, wherein an output cam is integrally formed to the output arm and an end portion of the output cam is pivotally coupled to one end portion of the output arm, a first link pivotally connecting the follower arm and the variable arm, and a second link pivotally connecting the variable arm and the output arm. | 06-10-2010 |
| 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 |
| 20110132297 | ELECTRO-HYDRAULIC VARIABLE VALVE LIFT APPARATUS - An electro-hydraulic variable valve lift apparatus may include a housing, a master portion which is slidably disposed to the housing and contacts a cam, a first oil supply portion which supplies hydraulic pressure, a slave piston which is slidably disposed within the housing and defines an oil chamber with the master portion, a latching portion which is supplied the hydraulic pressure from the first oil supply portion and selectively connects the slave piston and the master portion, a second oil supply portion which selectively supplies hydraulic pressure to the oil chamber so as to control relative distances between the master portion and the slave piston when the slave piston is disengaged with the master portion, and a stepped portion formed to the housing between the master portion and the slave piston to elastically support the master portion. | 06-09-2011 |
| 20110132299 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus may include a variable valve lift housing, a master piston which is slidably disposed in the variable valve lift housing and contacts a cam, a slave piston which is slidably disposed in the variable valve lift housing, defines an oil chamber with the master piston therebetween, and opens a valve connected to the slave piston according to reciprocative motion of the master piston, and a lift control portion which supplies oil to the oil chamber or exhausts oil in the oil chamber selectively to control a relative distance between the master piston and the slave piston. | 06-09-2011 |
