The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2013
Filed:
Jul. 25, 2011
Byong Young Choi, Incheon, KR;
Young Hong Kwak, Suwon, KR;
Gee-wook Shin, Hwaseong, KR;
Yoonsik Woo, Yongin-si, KR;
Jin Kook Kong, Suwon-si, KR;
Soo-hyung Woo, Yongin-si, KR;
Byong Young Choi, Incheon, KR;
Young Hong Kwak, Suwon, KR;
Gee-Wook Shin, Hwaseong, KR;
Yoonsik Woo, Yongin-si, KR;
Jin Kook Kong, Suwon-si, KR;
Soo-Hyung Woo, Yongin-si, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A variable valve lift apparatus includes a high cam and a low cam fixed side by side to a camshaft, an outer body pressed by the rotation of the high cam, and has a crossbar formed at the bottom of the front end, an inner body, of which the front end protrudes further than the outer body, the lower front end is provided with a valve member, the upper rear end is hinged to a lost motion hinge shaft coaxially with the rear end of the outer body, and the lower rear end is pivotally connected to a hinge member, and a latching portion inserted into the inner body and selectively connected to the crossbar of the outer body to move the inner body dependent on movement of the front end of the outer body, wherein the lost motion hinge shaft is disposed in the same direction as a hinge point between the inner body and the hinge member with respect to the camshaft. Dynamic characteristics can be obtained by reducing the moment of inertia of the variable valve lift apparatus, and the dynamic characteristics can be further improved by inserting the latching portion into the inner body so as to be closer to the camshaft.