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:
Aug. 14, 2007
Filed:
Dec. 12, 2005
Dong Chul Han, Seoul, KR;
Hyeong Joon Ahn, Seoul, KR;
Jee Uk Chang, Seoul, KR;
Sang Yong Kwak, Seoul, KR;
Dong Chul Han, Seoul, KR;
Hyeong Joon Ahn, Seoul, KR;
Jee Uk Chang, Seoul, KR;
Sang Yong Kwak, Seoul, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
A linear EMV actuator uses a permanent magnet and an electromagnet in which EMV operation for opening/closing an exhaust valve and an intake valve makes valve operations linear. As a result, the valve undergoes a soft landing and active control of an amount of opening of the valve. The linear EMV actuator includes an upper core and a lower core, an armature, an actuator spring and a valve spring. Also included are a permanent magnet, an upper coil and a lower coil connected to each other in series thereby forming one electromagnet, a displacement sensor, and a position controller.