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

Thomas Laube

Michael Wessels

Erwin Rutschmann

Bernd Müller

Frank Repphun

A method and a corresponding apparatus are provided for preconditioning an exhaust gas system () for discharging and purifying combustion exhaust gases of an internal combustion engine (), in particular an internal combustion engine () of a motor vehicle (). The method includes operating, air being heated by a heating element () in the exhaust gas system () to heat air in the exhaust gas system (), operating a fan in the exhaust gas system () for producing a hot air stream with the heated air, using the hot air stream for heating a first catalytic converter () of the exhaust gas system () to a minimum operating temperature.

Exhaust gas system with preconditioning

An exhaust gas system () has a main flow path () with an exhaust gas aftertreatment device (), and a bypass flow path () that has a fan () and a heating apparatus (). The bypass flow path () has opposite ends connected to the main flow path () in regions upstream and downstream of the exhaust gas aftertreatment device (). A shut-off () is arranged in the main flow path () upstream of the bypass flow path, and a further shut-off () is arranged in the main flow path downstream of the bypass flow path.

Exhaust gas system and method for operating an exhaust gas system

An air guiding arrangement is integrated into a rear underbody of a motor vehicle that is driven by an internal combustion engine. The air guiding arrangement includes a final silencer () in an exhaust system (). The final silencer () has an underside that faces an underlying surface on which the vehicle is supported. The underside of the final silencer () is shaped in an aerodynamic fashion with at least one duct () that runs essentially in the direction of travel (X). The duct () has an inverted U shape or inverted V-shape that is open in the underside of final silencer (). Air deflector elements () may partly cover the air duct () for guiding the air flow.

Aerodynamically acting final silencer for a motor vehicle

An exhaust system for an internal combustion engine having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, the first exhaust tract and the second exhaust tract being coupled to one another by a connecting line. A common bypass line branches off from the connecting line coupling the exhaust tracts.

Exhaust system for an internal combustion engine

A device for cooling charge air, specifically for cooling charge air which is compressed in a compressor of at least one exhaust-gas turbocharger and which is to be supplied to an internal combustion engine, wherein at least two charge-air coolers are arranged in a common housing, specifically in such a way that charge air to be cooled can be supplied separately to the charge-air coolers arranged in the common housing via in each case one separate incoming-air chamber provided by the common housing, and that cooled charge air can be discharged jointly from the charge-air coolers arranged in the common housing via a common outgoing-air chamber provided by the common housing.

Device for cooling charge air

An exhaust system for an internal combustion engine, having a first exhaust tract assigned to a first group of cylinders of the internal combustion engine, and having a second exhaust tract assigned to a second group of cylinders of the internal combustion engine, each exhaust tract comprising an exhaust gas purification device, a first silencer arranged on the outlet side of the respective exhaust gas purification device, and a second silencer arranged on the outlet side of the respective first silencer. Each exhaust tract includes a bypass line, it being possible for exhaust gas to be diverted via each bypass line, starting from the respective first silencer, bypassing the second silencers, and the bypass lines and hence the first silencers of both exhaust tracts being connected to one another by a mixing line.

Growing community of inventors

Leonberg, Germany

Thomas Laube