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:
Mar. 02, 2021
Filed:
May. 08, 2015
Audi Ag, Ingolstadt, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Dietmar Schuller, Altmannstein, DE;
Andreas Deimel, Ingolstadt, DE;
Michael Schöffmann, Lenting, DE;
Roland Meyer, Nürtingen, DE;
Oliver Rang, Kassel, DE;
Christian Corell, Oberjossa, DE;
AUDI AG, Ingolstadt, DE;
VOLKSWAGEN AKTIENGESELLSCHAFT, Wolfsburg, DE;
Abstract
An electromagnetic valve for a hydraulic system for an automatic transmission of a vehicle. An armature chamber is filled with hydraulic medium and fluidically connected to hydraulic lines of the hydraulic system. An armature is mounted in the armature chamber such that its stroke is adjustable. The armature includes a shut-off body and divides the armature chamber into an opening-side chamber facing the flow opening and into an inner chamber facing away from the flow opening. During a stroke of the armature, an oil exchange occurs, and a displacement volume of the hydraulic medium overflows from the opening-side chamber into the inner chamber. A hydraulic line leading to the opening-side chamber or to the inner chamber of the armature chamber includes a dirt collecting element that is designed as a permanent magnet and that retains contaminations in the hydraulic medium that flows through the hydraulic line during an oil exchange.