Abstract: The present disclosure provides a device for preventing the backward air flow of a reservoir tank for a vehicle, which may mount an backward air flow prevention tube extending to coolant on a connector of a reservoir tank to which a degassing hose is connected, and form an air collection slit hole communicating with an upper space of the reservoir tank in the upper portion of the tube to be openable or closable, thereby easily preventing the phenomenon in which the air within the reservoir tank flows back toward an engine, and easily collecting the air introduced from the engine side.

Abstract: A control method of an air conditioning system for compressor protection includes, when an air conditioner turn-on request is present, determining, by a controller, whether a compressor operating condition is satisfied from a refrigerant state of an air conditioner, when the compressor operating condition is determined as being satisfied, determining, by the controller, whether the vehicle is in a state of being unattended for a long period of time using information collected from a vehicle, when the vehicle is determined as being in a state of being unattended for a long period of time, performing, by the controller, pre-run control for operating the compressor in a predetermined minimum load condition; and when a pre-run operating time for which the compressor is operated in a minimum load condition reaches a predetermined pre-run holding time, interrupting, by the controller, the pre-run control with respect to the compressor.

Abstract: The present disclosure provides a device for preventing the backward air flow of a reservoir tank for a vehicle, which may mount an backward air flow prevention tube extending to coolant on a connector of a reservoir tank to which a degassing hose is connected, and form an air collection slit hole communicating with an upper space of the reservoir tank in the upper portion of the tube to be openable or closable, thereby easily preventing the phenomenon in which the air within the reservoir tank flows back toward an engine, and easily collecting the air introduced from the engine side.

Abstract: Disclosed is a method of manufacturing a sound absorbing material for a vehicle, which may include: (a) preparing a mixed fiber including an amount of about 55 to 75 wt % of microfiber polyethylene terephthalate staple fiber having fineness of about 0.3 to 0.7 denier, an amount of about 20 to 40 wt % of low-melt polyethylene terephthalate staple fiber having a fineness of about 1 to 3 denier and a melting point of about 100 to 110° C., and an amount of about 1 to 20 wt % of hollow staple fiber having a fineness of about 13 to 17 denier and a diameter of about 38 to 43 ?m, based on the total weight of the mixed fiber. The method may suitably further comprise (b) forming a plurality of webs comprising the mixed fiber; (c) forming a web layer comprising a plurality of webs; and (d) forming non-woven felt comprising the web layer.

Abstract: A method of controlling cooling fans for a vehicle is configured to control operation speeds of first and second cooling fans depending on a running state and operation of an air conditioner of the vehicle in a cooling module including a stack radiator, an electrical equipment radiator disposed in front of the stack radiator, a condenser disposed in parallel with reference to a width direction of the electrical equipment radiator and the vehicle, and the first and second cooling fans being provided at positions respectively corresponding to the electrical equipment radiator and the condenser in the rear of the stack radiator, including: independently controlling operation of each cooling fan by comparing required speeds of the cooling fans of constituent elements when operating the cooling fans provided as a pair in the cooling module depending on the running state and the operation of the air conditioner in the electric vehicle.

Abstract: A pressurized coolant reservoir tank assembly may include a tank having an injection port formed at an upper portion thereof, storing coolant for cooling an engine of a vehicle therein, and having a discharge hole formed to penetrate a side surface of the injection port such that steam or coolant is discharged to an outside through the discharge hole, a pressure cap fastened to the injection port such that the discharge hole is opened when the pressure in the tank reaches a predetermined pressure or the pressure cap begins to be rotated, and a burn prevention cover fitted to an outer surface of the tank with a gap between a bottom surface of the burn prevention cover and a surface of the tank such that the steam or coolant discharged through the discharge hole flows downward of the tank along the surface of the tank.

Abstract: A method of controlling cooling fans for a vehicle is configured to control operation speeds of first and second cooling fans depending on a running state and operation of an air conditioner of the vehicle in a cooling module including a stack radiator, an electrical equipment radiator disposed in front of the stack radiator, a condenser disposed in parallel with reference to a width direction of the electrical equipment radiator and the vehicle, and the first and second cooling fans being provided at positions respectively corresponding to the electrical equipment radiator and the condenser in the rear of the stack radiator, including: independently controlling operation of each cooling fan by comparing required speeds of the cooling fans of constituent elements when operating the cooling fans provided as a pair in the cooling module depending on the running state and the operation of the air conditioner in the electric vehicle.

Abstract: A pressurized coolant reservoir tank assembly may include a tank having an injection port formed at an upper portion thereof, storing coolant for cooling an engine of a vehicle therein, and having a discharge hole formed to penetrate a side surface of the injection port such that steam or coolant is discharged to an outside through the discharge hole, a pressure cap fastened to the injection port such that the discharge hole is opened when the pressure in the tank reaches a predetermined pressure or the pressure cap begins to be rotated, and a burn prevention cover fitted to an outer surface of the tank with a gap between a bottom surface of the burn prevention cover and a surface of the tank such that the steam or coolant discharged through the discharge hole flows downward of the tank along the surface of the tank.