Controlling method of intercooler and cooling system of vehicle
A method controls an intercooler of a vehicle including a bypass valve that is disposed between an inlet and an outlet connected to the ends of a U-shaped cooling part and is opened/closed such that compressed air is directly bypassed from the inlet to the outlet, without passing through the cooling part. The method includes determining whether to bypass compressed air injected in the intercooler by measuring one or more of engine load, vehicle speed, engine revolution speed, and gear stage, closing the bypass valve to block the flow between the inlet and the outlet when the compressed air needs to be bypassed, and opening the bypass valve such that the compressed air directly flows between the inlet and the outlet when it is smaller than the cooling reference value, when the compressed air does not need to be bypassed.
1. A method of controlling an intercooler of a vehicle, wherein the intercooler is disposed in front of a radiator, the method comprising:
providing a bypass valve disposed between an inlet and an outlet connected to opposing ends of a U-shaped cooling part of the intercooler, wherein the cooling part includes a U-shaped channel through which a compressed air flows to be cooled by exchanging heat with wind when the bypass valve is closed or partially opened and the compressed air is directly bypassed from the inlet to the outlet, without passing through the cooling part when the bypass valve is fully opened;
determining whether the intercooler or the radiator requires more cooling by measuring one or more of engine load, vehicle speed and gear stage;
closing the bypass valve when the intercooler requires more cooling than the radiator; and
opening the bypass valve when the radiator requires more cooling than the intercooler;
when the intercooler requires more cooling than the radiator, the engine is under a first predetermined vehicle speed and under a first predetermined load, and when the radiator requires more cooling than the intercooler the engine is under a second predetermined vehicle speed and a second predetermined load;
wherein the first predetermined vehicle speed is higher than the second predetermined vehicle speed; and
wherein the first predetermined vehicle load is lower than the second predetermined vehicle load.
2. The method as defined in claim 1 , wherein the determining of whether the bypass is required determines that the bypass is required when high load is applied to an engine at a low vehicle speed.
3. The method as defined in claim 1 , wherein the determining of whether to bypass determines that the bypass is required when the amount of fuel consumption is large and the vehicle travels at a low gear stage.
4. The method as defined in claim 1 , wherein when the bypass valve is open, a portion of the compressed air is injected in the inlet passes through the cooling part,
wherein the compressed air cooled through the cooling part and the compressed air flowing at high temperature in the inlet are mixed and flows out from the outlet.