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:
Jan. 14, 2020
Filed:
Nov. 09, 2018
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Myungsik Choi, Seoul, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Abstract
A variable compression ratio apparatus is provided. The apparatus includes a connecting rod, a small end forming an aperture to be rotatably connected with a piston pin moving together with a piston, a larger end rotatably connected with a crankpin eccentrically arranged with respect to the crankshaft. An acting oil passage allows hydraulic pressure to be supplied from the larger end to the small end. An eccentric cam is concentrically arranged and rotatably disposed in the aperture of the small end. The piston pin is inserted thereinto and rotatably connected therewith. A latching pin is disposed in the small end to generate a reciprocal rectilinear motion in a direction of a rotation axis of the small end and selectively latches the small end with the eccentric cam in one of at least two relative positions between the small end and the eccentric cam by hydraulic pressure.