Patent application number | Description | Published |
20090277405 | CONTINUOUS VARIABLE VALVE LIFT DEVICE - A continuous variable valve lift (CVVL) device opens and closes a valve by pressing a rocker arm through a rotational force transmitted from a drive cam. The CVVL device includes a drive arm, which is pivotably mounted such that one side thereof presses a rocker arm, a variable arm, which is pivotably mounted, and pushes and pivots the drive arm when pivoted, and a transmission arm, which is coupled with a transmission roller, which is located between the drive cam and the variable arm, at one end thereof and is pivoted such that a position where the transmission roller comes into contact with both the drive cam and the variable arm is changed. | 11-12-2009 |
20090288622 | CONTINUOUS VARIABLE VALVE LIFT DEVICE - The CVVL device includes a rocking cam having a rolling face contacting a rocker arm is formed to press the rocker arm when pivoted, a rocking roller, which is disposed above the drive cam and rolls on an outer circumference of the drive cam, a control apparatus, which changes a position of the rocking roller rolling on the outer circumference of the drive cam; and a rocking apparatus, which pivots the rocking cam according to a position of the rocking roller such that a position where the rocker arm is contacted with the rolling face is changed depending on the position of the rocking roller. | 11-26-2009 |
20100077974 | CONTINUOUSLY VARIABLE VALVE LIFT DEVICE AND OPERATION LOGIC THEREOF - A continuously variable valve lift device may include a vibration link having one end eccentrically and rotatably coupled to a rotation shaft, a rocker arm having a middle portion pivotally coupled to the other end of the vibration link, an advance lever having one end coupled to the one end of the rocker arm to select advance or delay, a swivel cam link having one end pivotally coupled to the other end of the rocker arm, and a swivel cam, one end of which is pivotally coupled to the other end of the swivel cam link and the other end of which is pivotally coupled to a stationary shaft to open and close a valve. | 04-01-2010 |
20120000444 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a connecting rod rotatably connected to the piston and the other end being eccentrically and rotatably connected to the crankshaft, an eccentric bearing link, a control link having both ends and a middle portion, the one end being rotatably connected to the other end of the eccentric bearing link, a first shake link having both ends, the one end being rotatably connected to the middle portion of the control link, a second shake link having both ends, the one end being rotatably connected to the other end of the control link, and a control shaft eccentrically connected to a first eccentric cam rotatably connected to the other end of the first shake link and a second eccentric cam rotatably connected to the other end of the second shake link respectively, and rotating together with the first and second eccentric cams. | 01-05-2012 |
20120012090 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include an external piston, a piston pin mounted in the external piston and a connecting rod, including an internal piston including a slot and sliding in an interior circumference of the external piston, wherein the piston pin passes through the internal piston and the external piston, a latching pin passing through the piston pin and selectively sliding therein, variable sliders disposed to selectively contact one of both ends of the latching pin, at both sides thereof to push the one of the both ends to the opposite side, and a support plate slidably supporting the variable sliders such that the variable sliders reciprocate perpendicular to length direction of the latching pin, wherein one end of a connecting arm selectively rotating may be connected to the variable slider and a sliding direction of the variable sliders may be controlled by rotation of the connecting arm. | 01-19-2012 |
20120042854 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus may include a connecting rod provided with one end formed of a mounting hole and the other end eccentrically and rotatably connected to a crankshaft, wherein a piston pin may be inserted in the mounting hole and the connecting rod may be rotatably connected to the piston through the piston pin, an eccentric link provided with an eccentric bearing concentrically and rotatably mounted in the mounting hole may be connected and, the piston pin being eccentrically and rotatably mounted in the eccentric bearing, a variable link pivotally connected to the eccentric link, a variable gear link pivotal with respect to a fixed shaft and having a first gear teeth at an exterior circumference thereof, an external circumferential portion thereof being rotatably connected to the variable link, and a control shaft formed of a second gear teeth engaged to the first gear teeth. | 02-23-2012 |
20120118270 | Variable Compression Ratio Apparatus - A variable compression ratio apparatus may be mounted at an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and may change compression ratio of the air-fuel mixture. The variable compression ratio apparatus includes a connecting rod having a small end and a big end, the small end being formed of an eccentric bearing hole concentrically so as to be rotatably connected to the piston through a piston pin, and the crankshaft is rotatably mounted at the big end, an eccentric link having one end to which an eccentric bearing rotatably mounted in the eccentric bearing hole concentrically is connected, an eccentric link slot being formed along a length direction thereof, a variable bar formed of a variable bar gear at one end portion thereof, and connected to the eccentric link through a variable bar pin movable along the eccentric link slot, and a variable gear engaged with the variable bar gear so as to move the variable bar to a predetermined direction reciprocally, wherein a piston pin hole is formed at the eccentric bearing eccentrically, and the piston pin is inserted in the piston pin hole such that the piston, the connecting rod, and the eccentric link are rotatably connected to each other. | 05-17-2012 |
20120125297 | VARIABLE COMPRESSION RATIO APPARATUS - A variable compression ratio apparatus for an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and for changing compression ratio of the air-fuel mixture. The apparatus may include a connecting rod including one end with a mounting hole and an other end eccentrically and rotatably connected to the crankshaft, an eccentric link including one end connected to an eccentric bearing concentrically and rotatably mounted in the mounting hole, a piston pin eccentrically and rotatably mounted in the eccentric bearing, a variable link including one end rotatably connected to an other end of the eccentric link, a variable gear link pivoting with respect to a fixed shaft and formed of first gear teeth at an exterior circumference, an external circumferential portion rotatably connected to an other end of the variable link, a control shaft including second gear teeth engaged to the first gear teeth and rotating to pivot the variable gear link, and a guide bar, together with the connecting rod, limiting horizontal movement of the eccentric link. | 05-24-2012 |