ENGINE COOLING SYSTEM

摘要

An engine cooling system may include a main intake line for supplying external air to an intake manifold attached to an engine including a cylinder block and a cylinder head, a supplementary intake line branched from one side of the main intake line and joined to the other side of the main intake line, an intake route control valve in the main intake line, a main exhaust line for flowing exhaust gas from an exhaust manifold, an exhaust route control valve in the main exhaust line, a turbocharger, an intercooler mounted to the supplementary intake line on a downstream side of the turbocharger, an EGR cooler branched from the exhaust manifold for recirculating the exhaust gas and provided in an EGR line connected to the main intake line; and a cooling line for flowing a coolant supplied from a water pump to cool the EGR cooler, the exhaust route control valve and/or the turbine housing of the turbocharger.

主权项

1. An engine cooling system comprising:
a main intake line for supplying external air to an intake manifold attached to an engine comprising a cylinder block and a cylinder head; a supplementary intake line branched from one side of the main intake line and joined to the other side of the main intake line; an intake route control valve provided in the main intake line; a main exhaust line for flowing exhaust gas from an exhaust manifold provided in the cylinder block; an exhaust route control valve provided in the main exhaust line; a turbocharger including:
a turbine housing and a turbine wheel to be rotated by the exhaust gas flowing in the supplementary exhaust line,a compressor housing and a compressor wheel to be rotated by rotation force of the turbine wheel and supercharging intake air flowing in the supplementary intake line,a shaft connecting the turbine wheel and the compressor wheel, anda bearing for rotatably supporting the shaft; an intercooler mounted to the supplementary intake line on a downstream side of the turbocharger; an exhaust gas recirculation (EGR) cooler branched from the exhaust manifold for recirculating the exhaust gas and provided in an EGR line connected to the main intake line; and a cooling line for flowing a coolant supplied from a water pump to cool the EGR cooler, the exhaust route control valve, and/or the turbine housing.