Abstract: The present disclosure provides an oil pressure supply system of an automatic transmission for a vehicle. The system may include: a mechanical oil pump; a line regulator valve configured to stably control the oil pressure supplied through the line pressure path and to supply the oil pressure to a first path; a torque converter control valve configured to control the oil pressure supplied through the first path and to supply the oil pressure to a second path and a third path; a torque converter lockup clutch control valve; an electric oil pump; a switch valve disposed on the seventh path and configured to open and close the oil pressure supplied to an eighth path; and a flow control valve configured to control a portion of the oil pressure supplied to the eighth path and to supply the portion of the oil pressure to the cooling/lubricating unit through a ninth path.

Abstract: A transmission for an electric vehicle may include an input shaft connect with a motor; a planetary gear set having a first rotation element directly connected to the input shaft, a second rotation element and a third rotation element; an output shaft having an output gear; a first drive gear provided in the third rotation element of the planetary gear set; a first driven gear disposed at the output shaft to be rotatable to engage with the first drive gear; a second drive gear connected to or disconnected from the input shaft; a second driven gear engaged with the second drive gear and directly connected to the first driven gear; a third drive gear directly connected to the second rotation element of the planetary gear set; and a third driven gear engaged with the third drive gear and directly connected to the output shaft.

Abstract: The present disclosure relates to a protein having the activity of exporting O-acetylhomoserine and a novel modified protein thereof, a microorganism capable of producing O-acetylhomoserine with enhanced expression of the protein, and a method for producing O-acetylhomoserine using the microorganism.

Abstract: Disclosed is a microorganism of Escherichia sp. producing O-acetyl homoserine, and a method of producing O-acetyl homoserine in high yield using the microorganism.

Abstract: A transmission for an electric vehicle, may include a concentric deceleration device for receiving power from a motor shaft and for decelerating; an output shaft disposed in parallel with the input shaft; a hollow shaft rotatably provided on the input shaft; a clutch device provided to switch the transmission state of power from the input shaft to the hollow shaft; a first synchronizer having a hub fixed to the input shaft; a second synchronizer having a hub fixed to the hollow shaft; a plurality of driving gears having different sizes and provided on the input shaft and the hollow shaft to be engaged with at least one of the first synchronizer and the second synchronizer; and a plurality of driven gears provided on the output shaft to be engaged with the plurality of driving gears to form different shift ratios, respectively.

Abstract: Disclosed is a hydraulic pressure supply system of a dual clutch transmission for a vehicle in which by independently configuring a low pressure supply route and a high pressure supply route, the hydraulic pressure supply system can enable a low hydraulic pressure that is generated in a hydraulic pump for a low pressure to be supplied to a gear lubrication device and a clutch cooling/lubrication device and enable a low hydraulic pressure that is generated in a hydraulic pump for a high pressure to be supplied to a gear control device and a clutch control device.

Abstract: A hydraulic control system may include control valve to selectively supply line pressure to first and second ejection flow channels, first shift valve converting flow channel, second shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of first and second actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of the first and second actuators, third shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chamber of third actuator and to selectively supply hydraulic pressure of the second ejection path to second chamber of third actuator, and fourth shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of fourth and fifth actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of fourth and fifth actuators.

Abstract: An apparatus for automatic shifting of a vehicle may include a rotation shaft connected to an output shaft to rotate together; first connecting members each having a first end portion to which a first link disposed on the rotation shaft is hinged and a second end portion to which a centrifugal weight is disposed, to pivot about the first end portions by centrifugal force; second connecting members each having a first end portion hinged to the middle portion of the first connecting member and a second end portion hinged to a second link disposed on the rotation shaft; a slider disposed on the rotation shaft to be coupled to any one of the first link and the second link and sliding in an axial direction of the rotation shaft; and a shift fork connected to the slider to engage a synchronizer with a shift stage gear.

Abstract: The present disclosure relates to a protein having the activity of exporting O-acetylhomoserine and a novel modified protein thereof, a microorganism capable of producing O-acetylhomoserine with enhanced expression of the protein, and a method for producing O-acetylhomoserine using the microorganism.

Abstract: The present disclosure relates to a novel O-acetylhomoserine sulfhydrylase variant, a polynucleotide encoding the same, a vector comprising the polynucleotide, a strain capable of expressing the variant, and a method for producing L-methionine using the variant.

Abstract: The present invention relates to a recombinant microorganism producing quinolinic acid, more particularly, a microorganism producing quinolinic acid and having attenuated activity or eliminated activity of a protein having a sequence of SEQ ID NO: 1 and a method of producing quinolinic acid by using the recombinant microorganism.

Abstract: An oil supply system of an automatic transmission for vehicle may include low-pressure oil pump discharging the oil to low-pressure passage; torque converter control valve controlling flow of the low-pressure passage while recirculating some of surplus flow rate and supplying the controlled flow rate to an operating-side chamber of torque converter and downstream valve; torque converter lock-up clutch switch valve supplying the flow rate of the torque converter control valve and circulation flow rate of the operating-side chamber of the torque converter to lubrication passage; torque converter pressure control valve supplying the flow rate to non-operating side chamber of the torque converter; high-pressure oil pump boosting some of the flow rate of the low-pressure passage and discharging the boosted flow rate to high-pressure passage; and line regulator valve supplying the surplus flow rate during control process to the low-pressure passage and supplying the controlled flow rate to high-pressure portion.

Abstract: A hydraulic control system of double piston clutch device configured for an automatic transmission, which includes clutch drum connected to one rotation element, a clutch configured in the clutch drum and configured to transmit rotation power in connection with another rotation element through a clutch hub, and a double piston in which first and second pistons are disposed in series to operate the clutch by hydraulic pressure while a front end is disposed to correspond to the clutch, may include a first hydraulic chamber formed between the first piston and the clutch drum to receive the hydraulic pressure through a first passage hole in a sealed state; and a second hydraulic chamber formed between the first and second pistons to receive the hydraulic pressure through a second passage hole in the sealed state and the hydraulic pressure separately controlled is supplied to the first and second hydraulic chambers, respectively.

Abstract: A power delivery device for an automatic transmission may include a clutch drum connected to an input shaft, a clutch disposed in the clutch drum and including a friction member connected to a planet carrier of a planetary gear set through a clutch hub, and a piston device disposed corresponding to the clutch and operating the clutch by hydraulic pressure.

Abstract: A clutching device of an automatic transmission may include a clutch drum connected to a first rotation element, a clutch connected to the clutch drum and a second rotation element, and a piston device to operate the clutch, wherein the piston device may include a first piston forming a first sealed space with the first rotation element and the clutch drum and moving toward the clutch by a hydraulic pressure supplied to the first sealed space, a second piston forming a second sealed space with the first piston and moving toward the clutch to directly press the clutch by a hydraulic pressure supplied to the second sealed space, a spring retainer disposed on the first rotation element and forming a third space with the second piston and the first rotation element, and a return spring stored in the third space and abutted by the spring retainer and the second piston.

Abstract: A power delivery device configured for an automatic transmission may include a brake disposed between a rotation element connected to a brake hub and a transmission housing, and a piston device disposed corresponding to the brake and operating the brake by hydraulic pressure, wherein the power delivery device configured for an automatic transmission selectively connects the rotation element to the transmission housing by use of dual pistons.

Abstract: The present invention relates to a polypeptide having a resistant to feedback inhibition by methionine and an activity of homoserine O-succinyltransferase, a O-succinyl homoserine-producing microorganism expressing the polypeptide, and a method for producing O-succinyl homoserine using the same.

Abstract: An oil circuit includes an oil pan in which oil is stored, an oil supply line extending from the oil pan, a cooling oil supply line branched from the oil supply line and connected to the dual clutch of the dual clutch transmission, a lubricating oil supply line branched from the oil supply line and connected to the gearbox of the dual clutch transmission, a distribution valve disposed in the oil supply line and configured to distribute the oil to the cooling oil supply line and the lubricating oil supply line, and an oil pump configured to pump the oil from the oil pan, and a control device configured to control an operation of the oil pump and to control an opening degree of the distribution valve.

Abstract: A hydraulic control system may include control valve to selectively supply line pressure to first and second ejection flow channels, first shift valve converting flow channel, second shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of first and second actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of the first and second actuators, third shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chamber of third actuator and to selectively supply hydraulic pressure of the second ejection path to second chamber of third actuator, and fourth shift valve converting path to selectively supply hydraulic pressure of the first ejection path to first chambers of fourth and fifth actuators and to selectively supply hydraulic pressure of the second ejection path to second chambers of fourth and fifth actuators.

Abstract: An oil pressure supply system distributes lubrication for a dual clutch transmission and an includes a mechanical oil pump pumping oil stored in a sump while being driven by an engine; a line regulator valve directly supplying a lubrication flow rate to an input shaft and a counter shaft by controlling the oil pressure supplied from the mechanical oil pump and simultaneously supplying the lubrication flow rate to a gear train and clutch through another path; a line pressure control valve variably exhausting the lubrication oil pressure when the lubrication oil pressure supplied to the input shaft and the counter shaft is a predetermined value or more; an electric oil pump pumping the oil depending on a control of a transmission control unit; a first lubrication switch valve selectively blocking oil pressure supplied from the electric oil pump to the gear train and the clutch; and a second lubrication switch valve switching a flow path so that oil pressure supplied from the line regulator valve and the first l