Abstract: A control system for a hydraulic variable valve. The control system may include an OCV configured with a housing, a flow passage defined in the housing, a main port, first and second drain ports, a spool, and a relief valve; a main line connecting the main port and the oil pump to each other; a control line connecting the control port and the lash adjuster to each other; an orifice provided between the main line and the control line; and a controller controlling the OCV to allow at least one combination of the main port and the first drain port, the control port and the second drain port, and the main port and the control port to communicate with each other.

Abstract: A product for participating in a block chain system includes: a network interface configured to communicate, by using a first network, with participants of the block chain system to share block chain data, the block chain data including at least one of an ownership record block and an ownership registration block for the product; an output circuitry configured to output a notification signal; and a processor configured to determine, during a booting operation of the product, whether ownership of the product is registered in the block chain data through the network interface and to control the output circuitry to output a message requesting registration of an ownership of the product based on a determination that the ownership of the product is not registered in the block chain data.

Abstract: A variable-compression-ratio engine may include a piston pin configured to interconnect a piston and an end portion of a connecting rod; an eccentric cam rotatably provided around the end portion of the connecting rod so that the piston pin is provided eccentrically to the eccentric cam, the eccentric cam serving to eccentrically rotate the piston pin via rotation thereof to vary a height of a top dead point of the piston; a latching plate configured to eject an oil, supplied thereinto, outwards in a circumferential direction through an oil ejection hole formed in an external peripheral surface thereof, to be rotated by an ejection pressure of the oil, the latching plate being rotated with the eccentric cam; and an oil supply device configured to selectively supply the oil into the latching plate.

Abstract: A variable-compression-ratio engine may include a piston pin configured to interconnect a piston and an end portion of a connecting rod; an eccentric cam rotatably provided around the end portion of the connecting rod so that the piston pin is provided eccentrically to the eccentric cam, the eccentric cam serving to eccentrically rotate the piston pin via rotation thereof to vary a height of a top dead point of the piston; a latching plate configured to eject an oil, supplied thereinto, outwards in a circumferential direction through an oil ejection hole formed in an external peripheral surface thereof, to be rotated by an ejection pressure of the oil, the latching plate being rotated with the eccentric cam; and an oil supply device configured to selectively supply the oil into the latching plate.

Abstract: Disclosed is a variable compression ratio engine. When it is desired to change a compression ratio of fuel/air mixture, a first latching pin or a second latching pin is moved to restrict or allow rotation of a first connecting rod so that the first connecting rod moves linearly with respect to a second connecting rod, thereby variably adjusting the entire length of the connecting rod assembly and changing the compression ratio.

Abstract: A variable valve control system may include a variable valve mechanism having latching pins for performing variable valve lift by a pressure difference of oil, an oil control circuit block having a low-pressure oil line and a high-pressure oil line to control ON/OFF of the latching pins, and a rotation shaft valve having oil passages for switching the low-pressure oil line and the high-pressure oil line.

Abstract: A system for controlling a variable valve apparatus may include a plurality of oil control valves (OCVs) configured to respectively supply oil from an oil pump to a plurality of variable valve apparatuses or block the supply of the oil, and a single relief valve coupled to the plurality of oil control valves, wherein pressure in a plurality of control galleries for providing an oil supply path from the plurality of oil control valves to the plurality of variable valve apparatuses is maintained constant by only the single relief valve.

Abstract: A system for controlling a variable valve apparatus may include a plurality of oil control valves (OCVs) configured to respectively supply oil from an oil pump to a plurality of variable valve apparatuses or block the supply of the oil, and a single relief valve coupled to the plurality of oil control valves, wherein pressure in a plurality of control galleries for providing an oil supply path from the plurality of oil control valves to the plurality of variable valve apparatuses is maintained constant by only the single relief valve.

Abstract: A variable valve control system may include a variable valve mechanism having latching pins for performing variable valve lift by a pressure difference of oil, an oil control circuit block having a low-pressure oil line and a high-pressure oil line to control ON/OFF of the latching pins, and a rotation shaft valve having oil passages for switching the low-pressure oil line and the high-pressure oil line.

Abstract: Disclosed herein is a method including: performing eddy current testing on a steam generator tube material by using a motorized rotating pancake coil (MRPC) probe, evaluating a test signal measured using the eddy current testing, and predicting the corrosion rate of the steam generator tube material from a noise value in the MRPC inspection signal of the steam generator tube obtained from the evaluating. When the prediction method of a corrosion rate of a steam generator tube according to the present invention is used, the steam generator tube material which has low corrosion rate can be selected at the material selecting step because the corrosion rate can be predicted and the criterions on the corrosion rate of the steam generator tube can be established as the requirements through an eddy current MRPC noise inspection of the steam generator tube material.

Abstract: A variable compression ratio apparatus may include a plunger configured to move up and down in response to rotation of a crank shaft, a piston having a chamber formed thereinside, into which the plunger is inserted, and configured to move up and down with the plunger, the chamber including an upper chamber formed above the plunger and a lower chamber formed below the plunger, a spool valve configured to selectively supply oil to the upper chamber or to the lower chamber, and a controller configured to control the spool valve so that the piston moves up and down with respect to the plunger.

Abstract: A variable compression ratio apparatus may include a plunger configured to move up and down in response to rotation of a crank shaft, a piston having a chamber formed thereinside, into which the plunger is inserted, and configured to move up and down with the plunger, the chamber including an upper chamber formed above the plunger and a lower chamber formed below the plunger, a spool valve configured to selectively supply oil to the upper chamber or to the lower chamber, and a controller configured to control the spool valve so that the piston moves up and down with respect to the plunger.

Abstract: A broadcast receiving apparatus and a method for controlling the same are provided. According to the exemplary embodiment of the present disclosure, the broadcast receiving apparatus includes: a broadcast signal receiver receiving a broadcast signal; a memory storing the received broadcast signal; an interface unit communicating with an external authentication device; and a memory controller controlling the interface unit to transmit the broadcast signal stored in the memory to the authentication device in a chunk having the a preset size, when a size of the broadcast signal stored in the memory exceeds the preset size.

Abstract: Provided are a tube sheet of a steam generator installed to support a tube of the steam generator, and a manufacturing method thereof, particularly, a tube sheet of a steam generator having an anticorrosive layer and a manufacturing method thereof.

Abstract: Disclosed herein is a method including: performing eddy current testing on a steam generator tube material by using a motorized rotating pancake coil (MRPC) probe, evaluating a test signal measured using the eddy current testing, and predicting the corrosion rate of the steam generator tube material from a noise value in the MRPC inspection signal of the steam generator tube obtained from the evaluating. When the prediction method of a corrosion rate of a steam generator tube according to the present invention is used, the steam generator tube material which has low corrosion rate can be selected at the material selecting step because the corrosion rate can be predicted and the criterions on the corrosion rate of the steam generator tube can be established as the requirements through an eddy current MRPC noise inspection of the steam generator tube material.

Abstract: A supersonic injection nozzle comprises: nozzle body part provided with inflow chamber in the inner portion; nozzle sleeve equipped in the nozzle body part and injection liquid being supplied in the inner portion; ultrasonic oscillator installed at the inflow chamber and vibrating the nozzle sleeve with ultrasonic waves and making the injected liquid passing through the inner portion of the nozzle sleeve atomized particles; compression air guide part installed in the front side of the nozzle body part and of which the front part of the nozzle sleeve is exposed from the front end and which has at least two liquid ejection holes provided at symmetrical position, wherein the ejection holes are connected to the inflow chamber of the nozzle body part and inclinedly supply the compressed air to the section of the liquid ejection holes provided at the front end of the nozzle sleeve.

Abstract: An electronic apparatus is provided, which includes a central processing unit (CPU), a first memory unit which performs communication with the CPU, and a second memory unit which stores therein conditional access system (CAS) software and platform software. According to the method of controlling the apparatus, upon booting, the CPU copies the CAS software to an internal memory area which may be within the CPU, copies the platform software to the first memory unit and executes the CAS and platform software, and executes CAS operations through communication between the CAS software and the platform software.

Abstract: A broadcast reception system, apparatus, and method for a Conditional Access System (CAS) function without a cablecard are provided. A security processor for performing a CAS function without using a cablecard includes a security processor for receiving Entitlement Control Message (ECM) information and Entitlement Management Message (EMM) information from a set-top box, extracting a Control Word (CW) using the ECM information and the EMM information, encrypting the CW, and transmitting the encrypted CW to the set-top box.

Abstract: An electronic apparatus is provided, which includes a central processing unit (CPU), a first memory unit which performs communication with the CPU, and a second memory unit which stores therein conditional access system (CAS) software and platform software. According to the method of controlling the apparatus, upon booting, the CPU copies the CAS software to an internal memory area which may be within the CPU, copies the platform software to the first memory unit and executes the CAS and platform software, and executes CAS operations through communication between the CAS software and the platform software.

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.