Variable Compression Ratio Apparatus for Vehicle Engine
AssigneeHyundai Motor Company
InventorsJae Sang Lee, Ki Wook Byeon
Life of this patent
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Abstract
A variable compression ratio apparatus for a vehicle engine that is mounted at the engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft mounted between upper and lower cylinder blocks, and that changes compression ratio of the air-fuel mixture by changing a mounting height of the crankshaft according to a driving condition of the engine, may include a bearing having a hollow space eccentric to a center thereof and rotatably mounted between the upper and lower cylinder blocks, the crankshaft being rotatably inserted in the hollow space; and an operating unit provided at the lower cylinder block and controlling a rotational displacement of the bearing.
Claims17
A variable compression ratio apparatus for a vehicle engine that is mounted at the engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft mounted between upper and lower cylinder blocks, and that changes compression ratio of the air-fuel mixture by changing a mounting height of the crankshaft according to a driving condition of the engine, the variable compression ration apparatus comprising:
- a bearing having a hollow space formed eccentric to a center thereof and rotatably mounted between the upper and lower cylinder blocks, the crankshaft being rotatably inserted in the hollow space;
- and
- an operating unit provided at the lower cylinder block and coupled to the bearing so as to control a rotational displacement of the bearing.
Dependencies are inferred from the claim text.