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 method and apparatus for downloading a Secure Micro (SM) bootloader of a receiver in a Downloadable Conditional Access System (DCAS) is provided. The method includes generating, by a transmitter, an SM bootloader for the receiver and adding the generated SM bootloader to firmware to be transferred to the receiver, sending, by the transmitter, the firmware to the receiver, and performing, by the receiver, registration by receiving the firmware, locating an SM bootloader in the firmware, and registering the located SM bootloader. In the DCAS, a receiver may download or install an SM bootloader through an online or offline procedure.

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: A method of manufacturing a mold for producing a catalyst carrier, which has a circular cross-sectional cell structure to realize high cell density and form a very thin web, compared to conventional arts, using a bundle of I-shaped pins.

Abstract: Provided is an apparatus for concurrently detecting a defect occurring in a heat exchanger tube and a geometric transition of the heat exchanger tube. The apparatus for detecting the state of a heat exchanger tube, including: the first detection unit detecting a defect of the heat exchanger tube; and the second detection unit detecting a geometric transition of the heat exchanger tube, in which the first detection unit and the second detection unit are disposed at the same circumferential position of a cylindrical body separately, installed to have a certain distance in the lengthwise direction of the cylindrical body, and inserted inside the heat exchanger tube. According to the present invention, not only a defect but also the type of geometric transition, which may accelerate the initiation and growth of a defect, is identified and the size of the geometric transition is concurrently measured, thereby improving the reliability in early detection of a defect.

Abstract: A method of manufacturing a mold for producing a catalyst carrier, which has a circular cross-sectional cell structure to realize high cell density and form a very thin web, compared to conventional arts, using a bundle of I-shaped pins.

Abstract: Provided is an apparatus for concurrently detecting a defect occurring in a heat exchanger tube and a geometric transition of the heat exchanger tube. The apparatus for detecting the state of a heat exchanger tube, including: the first detection unit detecting a defect of the heat exchanger tube; and the second detection unit detecting a geometric transition of the heat exchanger tube, in which the first detection unit and the second detection unit are disposed at the same circumferential position of a cylindrical body separately, installed to have a certain distance in the lengthwise direction of the cylindrical body, and inserted inside the heat exchanger tube. According to the present invention, not only a defect but also the type of geometric transition, which may accelerate the initiation and growth of a defect, is identified and the size of the geometric transition is concurrently measured, thereby improving the reliability in early detection of a defect.

Abstract: A catalyst carrier having a circular cell honeycomb structure formed from a plurality of cell passages whose inner surfaces are substantially circular and are coated with a catalyst for oxidizing and/or deoxidizing exhaust gas of a vehicle, wherein the circular-cross-section cells are integrally formed with the catalyst carrier by extrusion. The catalyst carrier allows the catalyst layer to be uniformly coated on the inner surface of the cell while reducing the amount of catalyst consisting of precious metals, and the cell-density can be increased by minimizing the height between the centers of the cells vertically disposed.

Abstract: Disclosed herein is a method of discriminating a through-wall crack and measuring the through-wall length of the crack in a steam generator tube of a nuclear power plant. The method of the present invention is characterized in that the through-wall crack is discriminated and the through-wall length of the crack is measured in such a way that there are measured the number and positions of inflection points of a graph that is plotted by relating characteristic amplitude values of eddy current signals, which are generated whenever a coil of a motorized rotating probe passes the crack while being spirally rotated, to the positions in the length of the crack.

Abstract: An engine control method for reducing emissions during cold start and idling is provided, which includes: opening an ISA with a predetermined opening rate such that an air/fuel ratio becomes higher than a stoichiometric air/fuel ratio, and minimizing an engine load caused by an automatic transmission; performing air/fuel ratio control and ignition timing control based on engine speed and engine load, and controlling an amount of fuel injected in consideration of a quantity of wetting fuel; and determining an air flow rate according to an engine speed and coolant temperature, and performing air/fuel ratio control and ignition timing control to control an engine speed fluctuation.

Abstract: The present invention provides an engine oil circulation system comprising an oil temperature sensor installed in a lower part of an oil pan that detects temperature of oil stored in the oil pan; an oil pressure sensor that detects pressure of oil discharged from an oil pump; an engine state sensor that detects an engine speed and an engine load; an oil pressure relief valve that is installed in one side of the oil pump and bypasses oil to the oil pan when pressure of oil supplied from the oil pump is higher than a predetermined pressure, the predetermined pressure being a minimum pressure above which the engine operates properly; a solenoid valve that is installed in a bypass tube and controls oil bypass; and a solenoid valve controller that controls an operation of the solenoid valve by a predetermined control logic on the basis of data input from the above oil temperature, oil pressure and engine state sensors.

Abstract: An engine control method for reducing emissions during cold start and idling is provided, which includes: opening an ISA with a predetermined opening rate such that an air/fuel ratio becomes higher than a stoichiometric air/fuel ratio, and minimizing an engine load caused by an automatic transmission; performing air/fuel ratio control and ignition timing control based on engine speed and engine load, and controlling an amount of fuel injected in consideration of a quantity of wetting fuel; and determining an air flow rate according to an engine speed and coolant temperature, and performing air/fuel ratio control and ignition timing control to control an engine speed fluctuation.

Abstract: Disclosed herein is a method of detecting a through-wall crack and measuring the through-wall length of the crack in a steam generator tube of a nuclear power plant. The method of the present invention is characterized in that the through-wall crack is detected and the through-wall length of the crack is measured in such a way that there are measured the number and positions of inflection points of a graph that is plotted by relating characteristic amplitude values of eddy current signals, which are generated whenever a coil of a motorized rotating probe passes the crack while being spirally rotated, to the positions in the length of the crack.

Abstract: The present invention provides an engine oil circulation system comprising an oil temperature sensor installed in a lower part of an oil pan that detects temperature of oil stored in the oil pan; an oil pressure sensor that detects pressure of oil discharged from an oil pump; an engine state sensor that detects an engine speed and an engine load; an oil pressure relief valve that is installed in one side of the oil pump and bypasses oil to the oil pan when pressure of oil supplied from the oil pump is higher than a predetermined pressure, the predetermined pressure being a minimum pressure above which the engine operates properly; a solenoid valve that is installed in a bypass tube and controls oil bypass; and a solenoid valve controller that controls an operation of the solenoid valve by a predetermined control logic on the basis of data input from the above oil temperature, oil pressure and engine state sensors.

Abstract: Disclosed is a method to determine a failure status of a cylinder and for controlling an air fuel ratio for each cylinder by a simple method using a wide range oxygen sensor. When the engine in a car is in normal status, output values of the wide range oxygen sensor are determined. These measures detect the density of oxygen in the exhaust gasses during a predetermined cycle at specific crank angles, the ensemble average values are found, and the maximum and minimum values of the computed ensemble average values are detected. If the difference between the maximum and minimum values is greater than a set reference value, it is determined that there is a failure of a cylinder, and the position of the cylinder at the maximum or minimum value is determined.

Abstract: A power steering system for a vehicle having a gear box and an intermediate shaft connected thereto, includes first and second sensors for detecting a speed of the vehicle and a pressure within a cylinder connected to the gear box, and a limiting mechanism for limiting the steering force of the vehicle according to the detection by the first and second sensors.