Abstract: A rotary jig for rotation of a crank shaft of a vehicle and a measuring system using the same are disclosed herein. The measuring system includes: a rotary jig for rotating a crank shaft by opening only a bonnet in a vehicle stop state; a probe joined to the position where a spark plug of an engine is separated and having an extension rod located at the center of a piston to check a top dead point and to output signal values when the crank shaft is rotated according to rotation of the rotary jig; a pump for supplying air to a cylinder chamber of the engine through a tube connected to the probe to move the piston; a terminal for outputting the signal value of the probe to a display unit through wireless communication; and a control unit for controlling the signal values.

Abstract: The present invention relates to a rotary jig for rotation of a crank shaft of a vehicle and a measuring system using the same. The measuring system includes: a rotary jig (100) for rotating a crank shaft (C) by opening only a bonnet in a vehicle stop state; a probe (700) joined to the position where a spark plug of an engine is separated and having an extension rod located at the center of a piston to check a top dead point and to output signal values when the crank shaft is rotated according to rotation of the rotary jig; a pump (810) for supplying air to a cylinder chamber of the engine through a tube connected to the probe (700) to move the piston; a terminal (900) for outputting the signal value of the probe (700) to a display unit through wireless communication; and a control unit (800) for controlling the signal values.

Abstract: 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.

Abstract: A cam target wheel for a vehicle may include a camshaft; and a lobe, formed on an outer circumferential surface of the camshaft, for recognizing a ridge and valley of a cam vibration waveform.

Abstract: 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.

Abstract: A cam target wheel for a vehicle may include a camshaft; and a lobe, formed on an outer circumferential surface of the camshaft, for recognizing a ridge and valley of a cam vibration waveform.

Abstract: An electro-hydraulic variable valve lift apparatus may include a valve unit housing of which a guide protrude portion is formed therein, a main piston which is slidably disposed in the valve unit housing and defines a valve adjusting oil chamber with the valve unit housing, a main spring which is disposed within the valve adjusting oil chamber and elastically supports the main piston on the guide protrude portion, a dependent piston which is slidably disposed within the valve unit housing, is guided along the guide protrude portion, reciprocates according to reciprocation of the main piston, and opens a valve, and a main oil supply portion which selectively supplies hydraulic pressure to the valve adjusting oil chamber.

Abstract: A variable compression ratio apparatus for varying a compression ratio, may include a connecting rod that is connected to a piston to take a combustion force; a pin link, one end of which is eccentrically connected to a crankshaft and the other end of which is pivotally connected to the connecting rod to form a connection portion therebetween; a slot link including a control slot to receive and guide the connection portion along the control slot; and a driving unit coupled to the slot link and configured to move the control slot to control a position of the connection portion.

Abstract: A variable compression ratio apparatus is disclosed. An upper connecting rod has one end rotatably connected to a piston so as to reciprocate motion of the piston. A lower connecting rod has one end rotatably connected to the other end of the upper connecting rod. A crankshaft is rotatably mounted at an eccentric position of the lower connecting rod. A control rod has one end rotatably connected to the other end of the lower connecting rod, to control the position of that end of the lower connecting rod. A control shaft is connected to the other end of the control rod, to control the position of that end of the control rod.

Abstract: A balance shaft function may be realized without employing a balance shaft, when an oil pump includes an inner rotor fixed to the rotation shaft and an outer rotor that rotates with the inner rotor if at least one rotor of the inner and outer rotors has a mass center formed apart from a rotation center.

Abstract: An electro-hydraulic variable valve lift apparatus may include a valve unit housing of which a guide protrude portion is formed therein, a main piston which is slidably disposed in the valve unit housing and defines a valve adjusting oil chamber with the valve unit housing, a main spring which is disposed within the valve adjusting oil chamber and elastically supports the main piston on the guide protrude portion, a dependent piston which is slidably disposed within the valve unit housing, is guided along the guide protrude portion, reciprocates according to reciprocation of the main piston, and opens a valve, and a main oil supply portion which selectively supplies hydraulic pressure to the valve adjusting oil chamber.

Abstract: 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.

Abstract: 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.

Abstract: A balance shaft module according to the present invention includes a first balance shaft equipped with a first eccentric balance weight, a second balance shaft equipped with a second eccentric balance weight, and a hydraulic pump that is operated by the first balance shaft and the second balance shaft, wherein the hydraulic pump includes a first gear equipped on the first balance shaft and a second gear equipped on the second balance shaft and externally meshed with the first gear.

Abstract: A device for preventing distal migration of a LAG screw used for hip joint fracture surgery is disclosed. A locking support (10) has a Side Plate and Nail Rod (11) and a LAG Screw Insertion Opening (13) which are bent relative to each other. The Side Plate and Nail Rod (11) has a plurality of Plate and nail screw hole (12). The LAG Screw Insertion Opening (13) has a LAG Screw Sliding Hole (14). A Depressed Stop Groove (15) is defined on one side or on each of opposite sides on the inner surface of the LAG Screw Insertion Opening (13). A Shank of LAG screw (20) to be inserted into the LAG Screw Sliding Hole (14) has a Screw Thread (21) which is formed on the proximal end thereof and a Sliding Stop Apparatus (Elevated Knot) (22) which is formed on one side or on each of opposite sides on the outer surface of the Shank of LAG screw (20) to prevent migration of the distal end of the Shank of LAG screw (20).

Abstract: An exhaust heat recirculation apparatus is capable of improving fuel mileage by heating lubricant using exhaust heat. The exhaust gas recirculation apparatus has a heat exchanger that is mounted at an exhaust line of an engine for heating coolant using the exhaust gas. The exhaust gas recirculation apparatus may include a main line allowing exhaust gas exhausted from each cylinder of the engine to communicate to a exhaust gas inlet, a bypass line communicated to a downstream side of the main line, a bypass valve mounted inside the bypass line, and a heat exchanger selectively communicated to the bypass line by way of the bypass valve.

Abstract: A variable compression ratio apparatus for varying a compression ratio, may include a connecting rod that is connected to a piston to take a combustion force; a pin link, one end of which is eccentrically connected to a crankshaft and the other end of which is pivotally connected to the connecting rod to form a connection portion therebetween; a slot link including a control slot to receive and guide the connection portion along the control slot; and a driving unit coupled to the slot link and configured to move the control slot to control a position of the connection portion.

Abstract: A variable compression ratio apparatus is disclosed. An upper connecting rod has one end rotatably connected to a piston so as to reciprocate motion of the piston. A lower connecting rod has one end rotatably connected to the other end of the upper connecting rod. A crankshaft is rotatably mounted at an eccentric position of the lower connecting rod. A control rod has one end rotatably connected to the other end of the lower connecting rod, to control the position of that end of the lower connecting rod. A control shaft is connected to the other end of the control rod, to control the position of that end of the control rod.

Abstract: A balance shaft function may be realized without employing a balance shaft, when an oil pump includes an inner rotor fixed to the rotation shaft and an outer rotor that rotates with the inner rotor if at least one rotor of the inner and outer rotors has a mass center formed apart from a rotation center.

Abstract: A balance shaft module according to the present invention includes a first balance shaft equipped with a first eccentric balance weight, a second balance shaft equipped with a second eccentric balance weight, and a hydraulic pump that is operated by the first balance shaft and the second balance shaft, wherein the hydraulic pump includes a first gear equipped on the first balance shaft and a second gear equipped on the second balance shaft and externally meshed with the first gear.