Engine cooling system having EGR cooler
First Claim
1. An engine cooling system provided with an exhaust gas recirculation (EGR) cooler, comprising:
- a cylinder block;
a cylinder head provided over the cylinder block;
a coolant pump configured to pump coolant to a coolant inlet of the cylinder block;
an EGR cooler in fluid communication with the coolant pump;
a first coolant temperature sensor configured to sense a first temperature of coolant discharged from the cylinder head;
a second coolant temperature sensor configured to sense a second temperature of coolant flowing from the coolant pump to the cylinder block; and
a coolant control valve unit that is provided downstream a coolant outlet of the cylinder head, wherein the coolant control valve unit is configured to receive coolant from the cylinder head,wherein the coolant control valve unit is configured to control a coolant flow to at least one part based on the first temperature and the second temperature.
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Accused Products
Abstract
An engine cooling system having an EGR cooler is disclosed. The system includes a cylinder head provided on a cylinder block, a coolant pump that pumps a coolant to a coolant inlet side of the cylinder block, an EGR cooler that is branched from a coolant line between the coolant pump and the cylinder block, and is provided in a circulation line through which a coolant is recirculated to an inlet of the coolant pump, and a coolant control valve unit that is provided in a coolant output side of the cylinder head to receive a coolant exhausted from the cylinder head and a coolant exhausted from the cylinder block and controls coolants distributed to coolant parts.
10 Citations
12 Claims
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1. An engine cooling system provided with an exhaust gas recirculation (EGR) cooler, comprising:
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a cylinder block; a cylinder head provided over the cylinder block; a coolant pump configured to pump coolant to a coolant inlet of the cylinder block; an EGR cooler in fluid communication with the coolant pump; a first coolant temperature sensor configured to sense a first temperature of coolant discharged from the cylinder head; a second coolant temperature sensor configured to sense a second temperature of coolant flowing from the coolant pump to the cylinder block; and a coolant control valve unit that is provided downstream a coolant outlet of the cylinder head, wherein the coolant control valve unit is configured to receive coolant from the cylinder head, wherein the coolant control valve unit is configured to control a coolant flow to at least one part based on the first temperature and the second temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification