Patent application number | Description | Published |
20090025667 | VARIABLE VALVE LIFT APPARATUS - A variable valve lift apparatus includes an end lever; a variable lift body connected to the end lever, and rotatable around the end lever, a valve mounted on the variable lift body; and a low lift cam operable to open and close the valve. The variable lift body includes a high lift body, and a low lift body rotatable around the high lift body. A low lift connecting portion selectively connects the low lift body and the high lift body. | 01-29-2009 |
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 |
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 |
20130146037 | MILLER CYCLE ENGINE SYSTEM AND CONTROL METHOD THEREOF - A miller cycle engine system is provided, which includes a motorized supercharger, and a miller cycle engine (having low compression and high explosion) having the motorized supercharger mounted thereon to improve a low-revolution performance of an engine using a scavenging phenomenon due to an operation of a variable valve device (variable valve timing, variable valve lift and variable valve duration) during an operation of the motorized supercharger and to improve a fuel efficiency through down-speeding of a gear ratio of a vehicle. | 06-13-2013 |
20130333360 | SECONDARY AIR INJECTION SYSTEM - A secondary air injection system supplying some of air introduced into an intake manifold to an exhaust manifold may include: an electric supercharger compressing air introduced through an air duct; throttle valves installed at an upstream of the intake manifold and controlling the amount of air introduced into the intake manifold by controlling the amount of air passing through the electric supercharger; secondary air valves installed on branching paths branched from intake, lines that link the electric supercharger and the throttle vales and controlling the amount of air for secondary air injection; and an injector that post-combusts exhaust gas discharged from an engine by injecting secondary air passing through the secondary air valve to a runner of the manifold. | 12-19-2013 |
20140165959 | ENGINE HAVING VARIABLE VALVE TIMING DEVICE AND VARIABLE TUMBLE DEVICE - An engine having a variable valve timing device and a variable tumble device, may include the variable valve timing device advancing or delaying a rotation of an intake camshaft or an exhaust camshaft, an intake valve or an exhaust valve configured to be operated by the intake camshaft or the exhaust camshaft respectively to open and close an intake port or an exhaust port, and the variable tumble device that may be disposed on an upstream side of the intake valve in the intake port and changes a flow of a gas being suck to form a tumble in a combustion chamber. | 06-19-2014 |
20140165960 | VARIABLE INTAKE MANIFOLD FOR INTERNAL COMBUSTION ENGINE AND VARIABLE AIR INTAKE DEVICE USING THE SAME - A variable intake manifold apparatus for an internal combustion engine, may include an inlet drawing in outside air and being connected to a main passage, first and second outlets branched from the main passage and fluid-connected to the inlet through the main passage and releasing the outside air drawn through the main passage through the first and second outlets, and a partition dividing the main passage and one of the first and second intake passages. | 06-19-2014 |
20140172271 | METHOD OF CONTROLLING ELECTRIC CONTINUOUS VARIABLE VALVE TIMING APPARATUS - A method of controlling an electric continuous variable valve timing apparatus improves starting performance of an engine by a simplified phase control for the camshaft. The method, in which intake and exhaust timing of an engine is changed in accordance with a phase of the camshaft, may include: determining whether starting off of the engine is required during driving; recognizing a target phase of the camshaft for next starting of the engine; controlling the phase of the camshaft so that the intake timing of the engine is advanced in accordance with the target phase; and ending the phase control of the camshaft in accordance with a state of the engine or the camshaft. | 06-19-2014 |
20140182565 | BRAKE NEGATIVE PRESSURE GENERATING DEVICE FOR VEHICLE - A brake negative pressure generating device of a vehicle includes: an electrically-driven supercharger for drawing in, compressing, and supplying outside air; a vacuum chamber connected to an inlet opening of the electrically-driven supercharger and supplying negative pressure for brake force boosting; a negative pressure supply passage for connecting the inlet opening of the electrically-driven supercharger and the vacuum chamber; and a first negative pressure control valve for opening and closing an inlet passage. Accordingly, the electrically-driven supercharger is run to supplement brake negative force if the brake negative force is not sufficient. | 07-03-2014 |
20140216422 | METHOD OF CONTROLLING ENGINE - A method of engine control includes: determining and comparing actual and target supply amounts of EGR gas; sensing an open rate of an EGR valve to control the actual supply amount supplied to an intake line; if the actual supply amount is smaller than the target supply amount and if the EGR-valve open rate is at a maximum, fixing an open rate of a bypass valve installed at a bypass line that bypasses an electrodynamic turbocharger to a minimum open rate; and controlling the EGR-valve open rate in a state in which the bypass-valve open rate is fixed to a minimum open rate. Therefore EGR gas can be more precisely and stably supplied. | 08-07-2014 |
20140230417 | EXHAUST GAS COMBUSTION SYSTEM - An exhaust gas combustion system advances exhaust timing by using an electric CVVT apparatus. The system may include: an air supply passage adapted to provide for passing air to be supplied to an engine; an exhaust manifold adapted to transmit exhaust gas of the engine to an exhaust passage; an air injection passage adapted to connect the air supply passage with the exhaust manifold so as to supply a part of air passing through the air supply passage to the exhaust manifold; and an air valve disposed at the air injection passage so as to selectively open or close the air injection passage. Unburned gas melded in exhaust gas may be combusted according to air supplied to the exhaust manifold. | 08-21-2014 |
20140238016 | SUPERCHARGING SYSTEM FOR ENGINE - A supercharging system for an engine includes: a cylinder block forming a combustion chamber; an intake manifold connected to the cylinder block to supply ambient air thereto; an exhaust manifold collecting exhaust gas discharged from the combustion chamber and guiding the same to the environment; a third supercharge path connecting an inlet of the intake manifold to the exhaust manifold; and an electric supercharger supplying compressed air to the exhaust manifold through the third supercharge path. Responsiveness of an engine is enhanced and stabilization of the engine is promoted. | 08-28-2014 |
20140238017 | NEGATIVE PRESSURE FORMING DEVICE FOR BRAKE OF VEHICLE - A brake vacuum pressure forming device for a motor vehicle may include a vacuum chamber supplying a vacuum pressure boosting a break operating force, an electric supercharger connected to the vacuum chamber to supply vacuum pressure thereto, a first vacuum pressure supply path connecting the electric supercharger and the vacuum chamber, and a vacuum pressure control valve mounted on the first vacuum pressure supply path and opening and closing the first vacuum pressure supply path. | 08-28-2014 |
20150020522 | ENGINE SYSTEM - An engine system may include a first intake line connected to an intake manifold and supplying the intake manifold disposed on a cylinder block with outside air, an intake bypass valve disposed on the first intake line, a second intake line that bypasses the first intake bypass valve to the intake manifold, a first exhaust line through which exhaust gas flows from an exhaust manifold disposed on the cylinder block, an exhaust bypass valve disposed on the first exhaust line, a second exhaust line connected to the exhaust manifold and bypasses the exhaust bypass valve, a turbo charger disposed between the second intake line and the second exhaust line and operated by exhaust gas passing the second exhaust line to pump intake air flowing the second intake line, and a control portion that controls the intake bypass valve and the exhaust bypass valve depending on a driving condition. | 01-22-2015 |
20150068204 | ENGINE SYSTEM - An engine system may include a main intake line, a supplementary intake line branched from the main intake line and joined to the main intake line, an intake bypass valve mounted to the main intake line, a main exhaust line mounted to an exhaust manifold, a supplementary exhaust line branched from the exhaust manifold and joined to the main exhaust line, an exhaust bypass valve mounted to the main exhaust line and selectively opening the main exhaust line, a turbocharger disposed adjacent to the supplementary exhaust line and operated by exhaust gas passing through the supplementary exhaust line, and a control unit for controlling the intake bypass valve and the exhaust bypass valve depending on an operation condition, wherein the exhaust gas is re-circulated from an upstream side of the exhaust bypass valve to the main intake line passing through an EGR (Exhaust Gas Recirculation) cooler and an EGR valve. | 03-12-2015 |