Coolant passage system of internal combustion engine
An internal combustion engine is described which consists of: a cylinder block comprising a row of cylinders, a cylinder block water jacket, a coolant distributor passage which extends along the cylinder row on a first side of the cylinder row in proximity to a top of the cylinder block and which is fluidly connected with the cylinder block water jacket for supplying a coolant to the cylinder block jacket, a first side portion defining first communication holes lying on the first side of the cylinder row, and a second side portion defining a plurality of second communication holes lying on a second side of the cylinder row opposite to the first side, end a cylinder head mounted on the top of the cylinder block for the cylinder row, the cylinder head comprising a cylinder head water jacket, a coolant collector passage which extends along the cylinder row on the second side, and is fluidly connected with the cylinder head water jacket for allowing the coolant to go out from the cylinder head jacket, a first side portion defining the first communication holes together with the first side portion of the cylinder block, and a second side portion defining the second communication holes together with the second side portion of the cylinder block, the first and second communication holes making a fluid communication between the cylinder block water jacket and the cylinder head water jacket, the first and second communication holes being so sized that the total opening area of the first communication holes is greater than the total opening area of the second communication holes, the cylinder head having at least one intake port and at least one exhaust port associated with the cylinder, the coolant flowing parallel to a line joining the centers of respective inner ends of the intake and exhaust ports.
- Assignee:
- Nissan Motor Co., Ltd., Yokohama
- Patent Number(s):
- US 4590894
- OSTI ID:
- 5635645
- Resource Relation:
- Patent File Date: Filed date 18 Mar 1985
- Country of Publication:
- United States
- Language:
- English
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