Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Volkswagen Ag

Markus Timmer

Sebastian Hemminger

Lukas Engin

Jens Gockel

Rico Fischer

Stephan Becker

Steffen Leicht

An exhaust gas system for a motor vehicle includes an exhaust gas burner and a pressure sensor for sensing flame formation in the exhaust gas burner.

Exhaust gas system for a motor vehicle, method for operating an exhaust gas system, and motor vehicle

A method for diagnosis of a tank ventilation valve in a tank ventilation system for an internal combustion engine of a motor vehicle includes actuating a tank ventilation valve via a control unit, and checking the functionality of the tank ventilation valve in a manner dependent on a pressure oscillation measured by the pressure sensor. The tank ventilation system includes a filter having a first feed line from a fuel tank, a second feed line with a connection to a surrounding atmosphere, and a third feed line to a tank ventilation valve, wherein the tank ventilation valve has a connection to two different introduction points at an intake pipe, wherein the connection has a first line system and a second line system, wherein the tank ventilation system further includes at least one pressure sensor installed in the second line system between tank ventilation valve and intake pipe.

Method for diagnosis of a tank ventilation valve based on pressure oscillations

A tank ventilation valve has a housing (), a closing member (), a sealing seat () and a first space (). A second space () is connected to the first space () via a control opening () that surrounds the sealing seat (). A spring () pretensions the closing member () against the sealing seat () and closes the control opening (). The closing member () opens as a function of a pressure difference between the first and second spaces (). The opened closing member () opens the control opening () so that the first space () is connected to a first line () connects to fresh air. The second space () is connected to a second line () that is attachable to a filter. Structure is provided to exert a further negative pressure on the closing member () to move the closing member () into the open position.

Valve for ventilation of a tank

Growing community of inventors

Leonberg, Germany

Markus Timmer