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. 20, 2023
Filed:
Dec. 20, 2019
Applicant:
Eaton Intelligent Power Limited, Dublin, IE;
Inventor:
Dale Arden Stretch, Novi, MI (US);
Assignee:
Eaton Intelligent Power Limited, Dublin, IE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/18 (2006.01); F01L 1/46 (2006.01); F01L 1/24 (2006.01);
U.S. Cl.
CPC ...
F01L 1/185 (2013.01); F01L 1/46 (2013.01); F01L 1/2405 (2013.01); F01L 2001/186 (2013.01); F01L 2001/2444 (2013.01); F01L 2810/01 (2013.01); F01L 2820/031 (2013.01);
Abstract
A valvetrain includes a rocker arm assembly having a rocker arm and an electromagnetic latch assembly. An electromagnet of the latch assembly is housed within a chamber formed by the rocker arm. Passageways suitable for oil cooling of the electromagnet are formed through and inside the rocker arm. In some embodiments, oil for cooling is supplied through a pivot. In some embodiments, oil for cooling is obtained from oil splash. Oil cooling may allow modes of operation such as of dynamic cylinder deactivation and dynamic variable valve actuation to be used without overheating the electromagnet.