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:
Oct. 06, 2026
Filed:
Apr. 22, 2024
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Mathias Hauptvogel, Weferlingen, DE;
Stephan Wassmann, Isenbuettel, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
Abstract
A system for diagnosing a crankcase ventilation system of an internal combustion engine. The system includes an internal combustion engine with at least one combustion chamber. The combustion chamber is bounded by a cylinder head, a cylinder in an engine block, and a piston. The piston is connected via a connecting rod to a crankshaft, which is disposed in a crankcase. An air supply system feeds fresh air into the combustion chamber of the internal combustion engine. At least one aeration line connects the air supply system to the crankcase. At least one vent line, which is different from the aeration line, connect the crankcase to the air supply system. A pressure sensor is disposed in the crankcase or the aeration line. A method for diagnosing a crankcase ventilation system and a control device for carrying out such a method are also provided.