Internal combustion engine having aluminum alloy cylinder block

Patent · Tue Mar 24 04:00:00 EST 1987

OSTI ID:6608362

Ogawa, N

An internal combustion engine is described comprising: a cylinder block formed of aluminium alloy and having main bearing bulkheads each of which is formed with a bearing surface; main bearing caps formed of aluminium alloy and securely connected, respectively, with the bearing bulkheads, the bearing caps being formed with bearing surfaces which are located, respectively, in opposition to the bearing surfaces of the bearing bulkhead; a crankshaft formed of iron alloy and rotatably supported by the bearing bulkheads and the bearing caps. The main journal of the crankshaft is located between the bearing surfaces of the bearing bulkheads and the bearing caps. The surface of the crankshaft main journal is in direct contact with the bearing surfaces of the bearing bulkheads and the bearing caps; and means defining an oil groove on the bearing surface of each bearing bulkhead for supplying engine lubricating oil between the crankshaft main journal and the bearing surfaces of the bearing bulkheads and the bearing caps. The oil groove extends along the periphery of the bearing bulkhead bearing surfaces, the bearing surfaces of the bearing caps being free of oil grooves so as to provide maximum contacting area with the main crankshaft journal to absorb greater explosive force.

• Assignee: Nissan Motor Co., Ltd., Yokohama
• Patent Number(s): US 4651691
• OSTI ID: 6608362
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
ALLOYS
ALUMINIUM ALLOYS
BEARINGS
CYLINDERS
ENGINES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
IRON ALLOYS
JOURNAL BEARINGS
LUBRICANTS
LUBRICATING OILS
MACHINE PARTS
MATERIALS
MOTION
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
ROTATION
SHAFTS
SURFACES