Variable valve lift apparatus
AssigneeHyundai Motor Company
InventorsYoung Hong Kwak, Kiyoung Kwon, Ki Uk Shin, Jin Kook Kong
Life of this patent
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Abstract
A variable valve lift apparatus according to an exemplary embodiment of the present invention includes a low lift cam, a high lift cam in parallel with the low lift cam, a low lift tappet body that selectively contacts the low lift cam, a high lift tappet body disposed within the low lift tappet body and constantly contacting the high lift cam, a guide portion that is connected with a valve and selectively connects the low lift tappet body and the high lift tappet body, and a lost motion spring that is disposed between the guide portion and the low lift tappet body and supplies restoring force to the low lift tappet body.
Claims14
A variable valve lift apparatus comprising:
- a low lift cam;
- a high lift cam disposed co-axially and in parallel with the low lift cam;
- a low lift tappet body selectively contacting the low lift cam;
- a high lift tappet body disposed within the low lift tappet body and constantly contacting the high lift cam;
- a guide portion that is connected with a valve and selectively connects the low lift tappet body and the high lift tappet body;
- and
- a lost motion spring that is disposed between the guide portion and the low lift tappet body, and supplies restoring force to the low lift tappet body.
A variable valve lift apparatus comprising:
- at least a low lift cam;
- a high lift cam disposed co-axially and in parallel with the low lift cam;
- at least a low lift tappet body selectively contacting the low lift cam, wherein the at least a low lift tappet body are connected by at least a connecting bracket;
- a high lift tappet body disposed between the at least a low lift tappet body and constantly contacting the high lift cam;
- a guide portion connected with a valve and selectively connecting the low lift tappet body and the high lift tappet body;
- and
- a lost motion spring that is disposed between the guide portion and the low and high lift tappet bodies, and supplies restoring force to the low lift tappet body in a low life mode.
Dependencies are inferred from the claim text.