An auxiliary cooling system which is provided separately from an engine cooling passage in a vehicle provided with a turbo engine. The auxiliary cooling system includes a first line which connects a radiator and an intercooler to each other and on which an electric water pump is installed. A second
An auxiliary cooling system which is provided separately from an engine cooling passage in a vehicle provided with a turbo engine. The auxiliary cooling system includes a first line which connects a radiator and an intercooler to each other and on which an electric water pump is installed. A second line connects the intercooler and an intake manifold. A third line connects the intake manifold and the radiator, and a bypass valve selectively directly transfers cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transfers the cooling water to the radiator via an engine block or a heater. Cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit.
대표청구항▼
1. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising: a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that
1. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising: a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that cooling water flows from the radiator toward the intercooler through the first line;a second line connecting the intercooler and an intake manifold to each other and allowing the cooling water to flow therethrough;a third line connecting the intake manifold and the radiator to each other and allowing the cooling water to flow therethrough; anda bypass valve that selectively directs transferring cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transferring the cooling water to the radiator via an engine block or a heater,wherein cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit, andwherein the third line supplies cooling water discharged from the intake manifold to an EGR (exhaust gas recirculation) cooler and supplies cooling water discharged from the EGR cooler to the turbine housing. 2. The auxiliary cooling system according to claim 1, wherein the third line supplies cooling water discharged from the intake manifold to a compressor housing and supplies cooling water discharged from the compressor housing to the turbine housing. 3. The auxiliary cooling system according to claim 1, wherein the third line supplies cooling water discharged from the intake manifold to a bearing housing and supplies cooling water discharged from the bearing housing to the turbine housing. 4. The auxiliary cooling system according to claim 1, wherein the third line supplies cooling water discharged from the intake manifold to an EGR cooler, supplies cooling water discharged from the EGR cooler to a compressor housing, supplies cooling water discharged from the compressor housing to a bearing housing, and supplies cooling water discharged from the bearing housing to the turbine housing. 5. The auxiliary cooling system according to claim 1, wherein the water pump starts operation 15 to 20 seconds after ignition of the vehicle is turned on and stops the operation 20 to 30 seconds after the ignition of the vehicle is turned off, and the bypass valve selectively bypasses cooling water heated while passing through the turbine housing to the engine block or the heater, wherein until the engine block is heated after the ignition of the vehicle is turned on, the cooling water is bypassed to the engine block, or when the heater is operated, the heated cooling water is bypassed to the heater, and when the engine block is in a heated state and the heater is not in operation, the heated cooling water is directly transferred to the radiator without being bypassed. 6. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising: a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that cooling water flows from the radiator toward the intercooler through the first line;a second line connecting the intercooler and an intake manifold to each other and allowing the cooling water to flow therethrough;a third line connecting the intake manifold and the radiator to each other and allowing the cooling water to flow therethrough; anda bypass valve that selectively directs transferring cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transferring the cooling water to the radiator via an engine block or a heater,wherein cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit, andwherein the third line supplies cooling water discharged from the intake manifold to an EGR cooler, supplies cooling water discharged from the EGR cooler to a compressor housing, supplies cooling water discharged from the compressor housing to a bearing housing, and supplies cooling water discharged from the bearing housing to the turbine housing. 7. An auxiliary cooling system installed separately from an engine cooling passage in a vehicle provided with a turbo engine, the auxiliary cooling system comprising: a first line connecting a radiator and an intercooler to each other, with an electric water pump installed on the first line so that cooling water flows from the radiator toward the intercooler through the first line;a second line connecting the intercooler and an intake manifold to each other and allowing the cooling water to flow therethrough;a third line connecting the intake manifold and the radiator to each other and allowing the cooling water to flow therethrough; anda bypass valve that selectively directs transferring cooling water, heated while passing through a turbine housing provided on a path of the third line, to the radiator or transferring the cooling water to the radiator via an engine block or a heater,wherein cooling water discharged from the intake manifold passes through an ETC (electronic throttle control) unit and thus reduces a temperature of intake air passing through the ETC unit,wherein the water pump starts operation 15 to 20 seconds after ignition of the vehicle is turned on and stops the operation 20 to 30 seconds after the ignition of the vehicle is turned off, andthe bypass valve selectively bypasses cooling water heated while passing through the turbine housing to the engine block or the heater, wherein until the engine block is heated after the ignition of the vehicle is turned on, the cooling water is bypassed to the engine block, or when the heater is operated, the heated cooling water is bypassed to the heater, and when the engine block is in a heated state and the heater is not in operation, the heated cooling water is directly transferred to the radiator without being bypassed.
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이 특허에 인용된 특허 (4)
Pantow, Eberhard; Rogg, Stefan, Circuit for cooling charge air, and method for operating such a circuit.
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Levijoki, Stephen Paul; Knieper, Christopher Harold, System and method for controlling torque output of an engine when a water pump coupled to the engine is switched on or off.
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