Engine system having turbocharger

An engine system having a turbocharger, comprising:

• a cylinder head, at which an intake manifold and an exhaust manifold are positioned;
• the turbocharger which is connected to the exhaust manifold and compresses intake air using exhaust gas discharged from the exhaust manifold;
• an intake line which is formed between the turbocharger and the intake manifold so as to supply compressed air, which is compressed by the turbocharger, through the cylinder head;
• an intercooler which is disposed to be adjacent to the intake manifold so as to cool the compressed air that is supplied through the intake line;
• an Exhaust Gas Recirculation (EGR) line connecting the exhaust manifold and the intake manifold and recirculating the exhaust gas, which is discharged from the exhaust manifold, to the intake manifold through the cylinder head;
• and
• an EGR cooler which is disposed to be adjacent to the intake manifold so as to receive an EGR gas from the EGR line and cool the EGR gas,
• wherein a low-temperature coolant that is supplied from a low temperature radiator to pass through the cylinder head cools the compressed air and the EGR gas that pass through the cylinder head,
• wherein the low-temperature coolant that is supplied from the low temperature radiator circulates through a coolant line independently of an engine coolant for cooling the cylinder head, and
• wherein the coolant line through which the low temperature coolant that is supplied from the low temperature radiator passes through the intercooler and the EGR cooler, and then
• passes through the cylinder head so as to cool the compressed air and the EGR gas that pass through the cylinder head, and circulates through a coolant pump and the low temperature radiator.

An engine system having a turbocharger, comprising:

• a cylinder head, at which an intake manifold and an exhaust manifold are positioned;
• the turbocharger which is connected to the exhaust manifold and compresses intake air using exhaust gas discharged from the exhaust manifold;
• an intake line which is formed between the turbocharger and the intake manifold so as to supply compressed air, which is compressed by the turbocharger, through the cylinder head;
• an intercooler which is disposed to be adjacent to the intake manifold so as to cool the compressed air that is supplied through the intake line;
• an Exhaust Gas Recirculation (EGR) line connecting the exhaust manifold and the intake manifold and recirculating the exhaust gas, which is discharged from the exhaust manifold, to the intake manifold through the cylinder head;
• and
• an EGR cooler which is disposed to be adjacent to the intake manifold so as to receive an EGR gas from the EGR line and cool the EGR gas,
• wherein a low-temperature coolant that is supplied from a low temperature radiator to pass through the cylinder head cools the compressed air and the EGR gas that pass through the cylinder head,
• wherein the intercooler and the EGR cooler are coupled to the intake manifold, and
• wherein the EGR cooler and the intercooler are sequentially disposed in series in a flow direction in which the intake air passes through the intercooler.

An engine system having a turbocharger, comprising:

• a cylinder head, at which an intake manifold and an exhaust manifold are positioned;
• the turbocharger which is connected to the exhaust manifold and compresses intake air using exhaust gas discharged from the exhaust manifold;
• an intake line which is formed between the turbocharger and the intake manifold so as to supply compressed air, which is compressed by the turbocharger, through the cylinder head;
• an intercooler which is disposed to be adjacent to the intake manifold so as to cool the compressed air that is supplied through the intake line;
• an Exhaust Gas Recirculation (EGR) line connecting the exhaust manifold and the intake manifold and recirculating the exhaust gas, which is discharged from the exhaust manifold, to the intake manifold through the cylinder head;
• and
• an EGR cooler which is disposed to be adjacent to the intake manifold so as to receive an EGR gas from the EGR line and cool the EGR gas,
• wherein a low-temperature coolant that is supplied from a low temperature radiator to pass through the cylinder head cools the compressed air and the EGR gas that pass through the cylinder head,
• wherein the intercooler and the EGR cooler are coupled to the intake manifold, and
• wherein the EGR cooler and the intercooler are disposed side by side and in parallel with a flow direction in which the intake air passes through the intercooler.

An engine system having a turbocharger, comprising:

• a cylinder head, at which an intake manifold and an exhaust manifold are positioned;
• the turbocharger which is connected to the exhaust manifold and compresses intake air using exhaust gas discharged from the exhaust manifold;
• an intake line which is formed between the turbocharger and the intake manifold so as to supply compressed air, which is compressed by the turbocharger, through the cylinder head;
• an intercooler which is disposed to be adjacent to the intake manifold so as to cool the compressed air that is supplied through the intake line;
• an Exhaust Gas Recirculation (EGR) line connecting the exhaust manifold and the intake manifold and recirculating the exhaust gas, which is discharged from the exhaust manifold, to the intake manifold through the cylinder head;
• and
• an EGR cooler which is disposed to be adjacent to the intake manifold so as to receive an EGR gas from the EGR line and cool the EGR gas,
• wherein a low-temperature coolant that is supplied from a low temperature radiator to pass through the cylinder head cools the compressed air and the EGR gas that pass through the cylinder head,
• wherein the low-temperature coolant that is supplied from the low temperature radiator circulates through a coolant line independently of an engine coolant for cooling the cylinder head,
• wherein a compressed air passage, which passes through the cylinder head, is formed in a cylindrical shape so as to correspond to the intake line,
• wherein an EGR gas passage, which passes through the cylinder head, is formed in a cylindrical shape so as to corresponding to the EGR line, and
• wherein a low-temperature coolant passage through which the low-temperature coolant passes that is supplied from the low temperature radiator is formed at a periphery of the compressed air passage and the EGR gas passage.