Abstract: A method for producing a 2-octylglycine ester having optical activity from a racemic 2-octyl-DL-glycine ester and, more particularly, to a method for producing a 2-octyl-L-glycine ester or a 2-octyl-D-glycine ester by using a chiral mandelic acid as an optical resolution agent.

Abstract: A cooling system may include an intercooler configured to heat-exchange a coolant and air, a radiator configured to cool a coolant heated in an engine through heat-exchange with air, a low temperature radiator configured to cool the coolant of the intercooler, a thermostat selectively fluid-connected to the radiator or the intercooler to supply the coolant from the radiator or the intercooler to the engine, a first control valve configured to selectively supply the coolant which has passed through the intercooler to the radiator, a second control valve configured to selectively supply the coolant which has passed through the engine to the intercooler or the first control valve, and a controller configured to control operations of the thermostat, the first control valve, and the second control valve according to a temperature of the coolant of the engine and a temperature of intake air.

Abstract: A cooling system may include an intercooler configured to heat-exchange a coolant and air, a radiator configured to cool a coolant heated in an engine through heat-exchange with air, a low temperature radiator configured to cool the coolant of the intercooler, a thermostat selectively fluid-connected to the radiator or the intercooler to supply the coolant from the radiator or the intercooler to the engine, a first control valve configured to selectively supply the coolant which has passed through the intercooler to the radiator, a second control valve configured to selectively supply the coolant which has passed through the engine to the intercooler or the first control valve, and a controller configured to control operations of the thermostat, the first control valve, and the second control valve according to a temperature of the coolant of the engine and a temperature of intake air.

Abstract: An engine system having two cooling loops may include a first coolant loop in which a first coolant circulates through an engine and a first radiator, a second coolant loop in which a second coolant circulates through a water-cooled intercooler and a second radiator, a first branch line that branches from one side of the first coolant loop, a second branch line that branches from one side of the second coolant loop, a mixture line allowing the first coolant and the second coolant to be mixed to flow therein, and branching to the first coolant loop and the second coolant loop, a temperature adjusting valve configured to control a temperature of the mixture coolant flowing in the mixture line, and a mixture coolant line allowing the mixture coolant to flow, and branching to the first coolant loop and the second coolant loop.

Abstract: An engine system having two cooling loops may include a first coolant loop in which a first coolant circulates through an engine and a first radiator, a second coolant loop in which a second coolant circulates through a water-cooled intercooler and a second radiator, a first branch line that branches from one side of the first coolant loop, a second branch line that branches from one side of the second coolant loop, a mixture line allowing the first coolant and the second coolant to be mixed to flow therein, and branching to the first coolant loop and the second coolant loop, a temperature adjusting valve configured to control a temperature of the mixture coolant flowing in the mixture line, and a mixture coolant line allowing the mixture coolant to flow, and branching to the first coolant loop and the second coolant loop.

Abstract: A cooling system may include an intercooler configured to heat-exchange a coolant and air, a radiator configured to cool a coolant heated in an engine through heat-exchange with air, a low temperature radiator configured to cool the coolant of the intercooler, a thermostat selectively fluid-connected to the radiator or the intercooler to supply the coolant from the radiator or the intercooler to the engine, a first control valve configured to selectively supply the coolant which has passed through the intercooler to the radiator, a second control valve configured to selectively supply the coolant which has passed through the engine to the intercooler or the first control valve, and a controller configured to control operations of the thermostat, the first control valve, and the second control valve according to a temperature of the coolant of the engine and a temperature of intake air.

Abstract: An intake air cooling system in an engine may include: an intake manifold; a connection passage in communication with the intake manifold; an intake passage provided in communication with the connection passage; a compressor provided for compressing the outdoor air passed through the intake passage and forwarding the outdoor air compressed thus to the connection passage as the intake air; an intercooler arranged on the connection passage for cooling the outdoor air compressed by the compressor with cooling water; a low temperature radiator for dispersing heat remaining in the cooling water passed through the intercooler to air; a cooling water passage arranged to circulate the cooling water while passing through the low temperature radiator, the compressor, and the intercooler in succession, and a water pump for pumping the cooling water to circulate it along the cooling water passage.

Abstract: A process for preparing a compound of formula (1) in which P1 and P2 are protecting groups; comprising a) reaction of a compound of formula (5) wherein P1 is as defined for formula (1); with a Raney-nickel catalyst in a solvent under hydrogen to produce a compound of formula (6) wherein P1 is as defined for formula (1); b) protecting the amino group to produce a compound of formula (7) wherein P1 and P2 are as defined for formula (1); and c) selective reduction of the double bond to produce the compound of formula (1).