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:
Apr. 07, 2020
Filed:
Dec. 04, 2017
Applicant:
Eco Holding 1 Gmbh, Marktheidenfeld, DE;
Inventor:
Daniel Stanhope, Nunica, MI (US);
Assignee:
ECO Holding 1 GmbH, Marktheldenfeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01); F01L 1/344 (2006.01); F01L 1/047 (2006.01);
U.S. Cl.
CPC ...
F01L 1/3442 (2013.01); F01L 1/047 (2013.01); F01L 1/34409 (2013.01); F01L 2001/0475 (2013.01); F01L 2001/054 (2013.01); F01L 2001/3443 (2013.01); F01L 2001/3445 (2013.01); F01L 2001/34433 (2013.01); F01L 2001/34459 (2013.01); F01L 2101/00 (2013.01); F01L 2103/00 (2013.01);
Abstract
An oil control valve for a cam phaser of an internal combustion engine where the spool is positioned by an external actuator. The pressure enters the end of the oil control valve where the resultant pressure force is balanced by the differential area of the spool. The spool contains two plate check valves enabling cam torque recirculation of oil from A to B or B to A depending upon the spool position. In mid position, the spool lands block A and B to hold the cam phaser position. Three or five positions may be utilized.