Volkswagen Ag

Volkswagen Akiihngesellschaft

Bernd Hupfeld

Stefan Paukner

Falk-Christian Baron Von Ceumern-Lindenstjerna

Michael Kaack

Asmus Carstensen

Artur Semke

Uwe Kammann

Andreas Herr

Thomas Maischik

Thomas Schulenburg

André Horn

Lars Schlüter

Marcus Dallmann

Jörg Volkmann

Falk-Christian Baron Von Ceumern-Lindenst Jerna

Holger Lange

The invention relates to an exhaust gas aftertreatment system for a spark ignition internal combustion engine based on the Otto principle. The internal combustion engine is connected on the outlet side to an exhaust gas system, wherein an electrically heatable three-way catalytic converter, a four-way catalytic converter downstream from the electrically heatable three-way catalytic converter, and a further three-way catalytic converter downstream from the four-way catalytic converter are situated in the exhaust gas system in the flow direction of an exhaust gas through the exhaust gas system. Before the internal combustion engine is started, the electrically heatable three-way catalytic converter and preferably also the four-way catalytic converter are heated to allow efficient exhaust gas aftertreatment of the untreated emissions of the internal combustion engine upon starting the internal combustion engine. The exhaust gas aftertreatment system is also configured to allow efficient conversion of the pollutants also during a regeneration of the four-way catalytic converter, and thus, to ensure particularly low emissions in all operating states of the motor vehicle.

System and method for exhaust-gas aftertreatment of an internal combustion engine

An axial piston motor having a cylinder housing, in which a plurality of cylinders are formed, and having pistons which are movably guided in the cylinders, wherein the pistons are attached to a swash plate and wherein a flow of a fluid that has entered via an inlet into the axial piston motor is controlled into and out of the cylinders by means of inlet and outlet valves, wherein the inlet and/or outlet valves comprise fluid change openings which are formed in a cylinder head plate and which can be temporarily released and covered by means of a rotary slide, for which purpose the rotary slide forms at least one passage opening.

Axial-piston motor and cyclic process device

Growing community of inventors

Gifhorn, Germany

Bernd Hupfeld