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US 2020/0182146 A1Published application
Variable compression ratio engine
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorKyoung Chan Han
Life of this patent
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Abstract
A variable compression ratio engine includes an extra chamber formed at a cylinder head, an extra valve being able to open/close the extra chamber, and an actuator being able to open/close the extra chamber by driving the extra valve.
Claims7
A variable compression ratio engine comprising:
- an extra chamber formed at a cylinder head;
- an extra valve being able to open/close the extra chamber;
- and
- an actuator being able to open/close the extra chamber by driving the extra valve,
- wherein the extra valve has a valve stem extending upward from the cylinder head through the extra chamber, wherein a return spring, which applies elasticity in a direction in which the extra valve closes the extra chamber, is disposed between the extra valve and the cylinder head, and wherein the actuator presses a stem end of the extra valve so that the extra valve can open the extra chamber against the elasticity of the return spring.
2 more elements
Dependencies are inferred from the claim text.