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

Illinois Tool Works Inc.

Michael Wessels

Thomas Laube

Juergen Schorn

Lukas Engin

Joachim Kappich

Peter Rothenberger

Bernd Müller

Harald Mann

Manfred Hein

J&uuml;rgen Schorn

Jürgen Schorn

Ingo De Wilde

Rouven Voehringer

G&uuml;nter Weimert

Frank Schürg

Andreas Weißhaar

Bernd Mueller

Roger Holle

A method for operating a supercharged internal combustion engine. Before a cold start of the engine, an electric drive device of an electrically assisted exhaust-gas turbocharger of the engine is activated such that fresh air is compressed by a compressor of the turbocharger and, in the process, is heated and is conveyed via an open overrun air recirculation valve arranged downstream of the compressor, through a short circuit back to a suction side of the compressor of the turbocharger. A proportion of the air that is heated by way of the short-circuit operation of the compressor is, downstream of the compressor and upstream of a closed throttle flap of the engine, conducted via a secondary air system into an exhaust manifold and from there via a wastegate of the turbocharger into the catalytic converters of an exhaust-gas aftertreatment device of the engine.

Method of operating a supercharged internal combustion engine

An exhaust system () of an internal combustion engine, prior to a first heating-up of the exhaust system (), has a particle filter () and an exhaust line () upstream of the particle filter (). The exhaust system () has a carrier element () with ash-forming components or ash applied thereto. The carrier element () may be on a side of the particle filter () facing toward the exhaust line (). Alternatively, the exhaust system () may have a catalytic converter () upstream of the particle filter (), the carrier element () that with the ash-forming components or the ash may be applied to the catalytic converter ().

Exhaust system of an internal combustion engine

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

A method is provided for producing at least one ash-forming element () for a particulate filter of an exhaust gas system of a gasoline engine or diesel engine. The method includes providing of a strip-shaped center layer (), and making receiving holes () in the center layer (). The method continues by providing of a strip-shaped bottom layer (), and permanently connecting of the bottom layer () to the center layer (). The method proceeds by filling the receiving holes () of the center layer () with ash-forming components (), providing a strip-shaped top layer (), and permanently connecting the top layer () to the center layer (). The method then includes punching out of at least one ash-forming means () from the wafer, and making throughflow openings () in regions where there are no ash-forming components ().

Method for producing at least one ash-forming means for a particulate filter of an exhaust gas system of a gasoline engine

A method for producing a gasoline engine exhaust gas system having a particulate filter includes using at least one spacer for positioning at least two components provided for the passage of exhaust gas from the engine. The spacer includes ash-forming constituents. The method then includes permanently connecting the components, and burning the spacer element during a first heating up of the exhaust gas system, thereby releasing the ash-forming constituents and depositing the ash-forming constituents on the particulate filter. An exhaust gas system of a gasoline engine also is provided in a state before a first heating up of the exhaust gas system. The exhaust gas system includes a burnable spacer element between two exhaust gas system components that are provided for the passage of exhaust gas. The burnable spacer elements include ash-forming constituents.

Method for producing a gasoline engine exhaust gas system having a particulate filter, and exhaust gas system of a gasoline 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.

Exhaust system for an internal combustion engine

A double-flow exhaust system for an internal-combustion engine, having exhaust-gas-carrying pipes and at least one muffler and catalyst housing. A separate end muffler is provided for each exhaust line, on which the end mufflers are both fluidically connected by at least one preferably mountable connection pipe.

Double-flow exhaust system for an internal-combustion engine

A vibration adjustment of a drive assembly is achieved by way of a pivoted mount about a longitudinal vehicle axis of an articulated column. An exhaust system with exhaust mufflers and catalytic converters is used to shift a total powertrain vibration to a lower engine speed, and a significantly improved vibrational behavior can be achieved at idle speed.

Device for coupled attachment of an exhaust system to an internal combustion engine

A mountable discharge pipe for an end muffler has devices for fastening the discharge pipe to an end muffler housing. A hook provided on the discharge pipe can be suspended at the end muffler housing, and a holding lug provided with an opening is arranged at the discharge pipe. The holding lug can be fastened by way of a nut-bolt connection on the end muffler housing. As a result, an easily mountable fastening of a discharge pipe on an end muffler is achieved.

Mountable discharge pipe for an end muffler as well as an end muffler for motor vehicle

An air filter for an internal combustion engine includes an air filter housing, the walls of which encompass a filter compartment in which a filter element is positioned, having an intake and an exhaust. Openings that can be sealed off or opened up based upon the operating conditions of the internal combustion engine are provided in a least one wall of the air filter housing. In this way, effective modulation of induction noise (sound modulation) can be achieved in a simple way and manner.

Air filter for an internal combustion engine

An exhaust system is provided which is intended for a power unit formed by the transmission and the internal-combustion engine which is installed into a motor vehicle having a body. The exhaust system, which has a muffler constructed as an oblong pipe body, is connected with the internal-combustion engine and is disposed by means of elastic elements. For achieving a defined advantageous vibration behavior of the exhaust system, a suspension arrangement is provided on the muffler, which suspension arrangement comprises the elastic elements, is applied to different wall areas of the muffler and is held on the transmission and/or the internal-combustion engine of the power unit by fastening devices, and preferably independently of the vehicle body.

Growing community of inventors

Bietigheim-Bissingen, Germany

Michael Wessels