| 摘要 |
According to an embodiment of the present invention, an engine cooling system comprises: a main intake line to supply outdoor air to an intake manifold installed in an engine including a cylinder block and a cylinder head; an auxiliary intake line branched from one side of the main intake line and converging to the other side thereof; an intake route control valve installed in the main intake line; a main exhaust line wherein exhaust gas discharged from an exhaust manifold installed in the cylinder block flows; an exhaust route control valve installed in the main exhaust line; a turbocharger including a turbine housing having a turbine wheel rotated by exhaust gas flowing through an auxiliary exhaust line, a compressor housing having a compressor wheel to charge intake air flowing through the auxiliary intake line by rotating with the turbine wheel, a shaft to connect the turbine wheel to the compressor wheel, and a bearing to support the shaft to be rotated; an intercooler installed in the downstream part of the turbocharger in the auxiliary intake line; an EGR cooler installed in an EGR line connected to the main intake line and branched from the exhaust manifold in order to recirculate the exhaust gas; and a cooling line wherein coolant supplied from a water pump flows in order to cool the EGR cooler, the exhaust route control valve, and the turbine housing. The present invention has effects of reducing manufacturing costs of an engine system and simplifying a passage by forming a cooling passage for cooling an exhaust route control valve, a turbine housing, and an EGR cooler. |
