Daimler Chrysler Ag

Daimler-benz Ag

Daimler Ag

Gerd Tiefenbacher

Georg Georgs

Gerd D&uuml;rr

Gerd Duerr

Hans-Dieter Schuster

Pierre Bonny

Hans-Joachim Langer

Martin Schlegl

Erwin Strohmer

Thorsten Sternal

Wolfgang Kizler

Anton Waltner

Roland Huss

Peter Raitschev

Friedhelm Nunnemann

Holger Nuhn

Thomas H&uuml;lsberg

Johann Kr&auml;mer

Hans-J&ouml;rg Kaifel

J&uuml;rgen Schmidt

Hans A H&auml;rle

Joachim Karwath

Johannes Kipp

Stefan Schaible

Gerd DÜRR

A crash-tolerant system arrangement in an engine compartment situated in the front end region of a motor vehicle includes an exhaust emission control system having an essentially cylindrical first catalytic converter housing situated in front of the exhaust gas turbocharger in the travel direction. The exhaust gas turbocharger is mechanically connected to an exhaust gas manifold via a first fastening device, and to an engine block via a second fastening device, the first and the second fastening devices being designed in such a way that a detachment of the connection of the exhaust gas turbocharger to the exhaust gas manifold and/or a detachment of the connection of the exhaust gas turbocharger to the engine block take(s) place within a predefined upper value range for the pressure force.

Crash-tolerant system arrangement in a motor-vehicle engine compartment

An exhaust gas cleaning system for an internal combustion engine for a motor vehicle has a catalytic converter housing with an associated exhaust catalytic converter and an inlet opening for connecting an exhaust pipe. A throttle element is arranged in the catalytic converter housing, in such a manner that a first reaction chamber, which lies between the throttle element and the inlet opening, and a second reaction chamber, which lies between throttle element and exhaust catalytic converter, are formed by the throttle element.

Exhaust gas cleaning system for an internal combustion engine, for a motor vehicle

In an exhaust manifold to be mounted on a cylinder head of an internal combustion engine which cylinder head includes a plurality of exhaust passages, the exhaust manifold includes a gas collector housing with a mounting flange, a gas conducting duct arranged in spaced relationship within the gas collector housing and having a mounting collar, and a hold-down element mounted together with the flange onto the cylinder head and including a recess receiving the collar of the gas conducting duct for retaining the gas conducting duct in engagement with the cylinder head but permitting relative movement thereto.

Exhaust manifold

An air gap insulated exhaust manifold for an internal combustion engine of a motor vehicle that has a catalytic converter. The exhaust manifold includes an inner pipe and an outer pipe with a connecting flange on the cylinder head side of the outer pipe. The outer pipe encloses the inner pipe and is spaced therefrom at a distance. A pipe end of the inner pipe protrudes in a guided manner into the cylinder head and only the outer pipe is fastenable to the cylinder head by way of the connecting flange.

Air gap insulated exhaust manifold assembly for an internal combustion engine and a method of making same

An apparatus and method of attaching an exhaust manifold to an engine's cylinder head utilizing an oversized hole in the manifold, a stud fastener extending through the oversized hole, a spacer element around the stud fastener, and a nut adapted to be tightened to engage the spacer element and the flange wherein a flat gasket is compressed to a desired extent which is not so excessive that it inhibits sliding movement caused by thermal growth of the manifold.

Fastening an exhaust manifold to an engine cylinder head

A method for operating an internal combustion engine system includes operating the internal combustion engine system in a desulfurization mode each time following a cold-start of the engine prior to the transition to a normal operating mode. The internal combustion engine system includes (1) an exhaust line; (2) a sulfur-rich exhaust purification component comprising at least two exhaust purification units connected in series in the exhaust line; and (3) a secondary air supply having separate branches for the sulfur-rich exhaust purification units.

Method for operating an internal combustion engine and system and with sulfur-rich exhaust gas purification component and an internal combustion engine system operable therewith

A pipe clamp with a headed bolt for securing a pipe connection, in particular pipes of the exhaust system of a motor vehicle which are to be connected to one another, in the case of which the end of a first pipe is pushed into an axially slit end of a second pipe and, when the headed bolt is tightened, the pipe clamp, fitted on the slit pipe end, connects the two pipe ends to one another in a frictionally locking manner, is to be secured against a reduction in clamping force. For this purpose, the pipe clamp is formed of a material which has a higher coefficient of expansion than does the material of the pipes which are to be connected. The head of the headed bolt is elongated, in order to avoid impermissibly high local stressing during tightening of the pipe clamp. Due to the elongate form of the head of a headed bolt, the forces on the pipe clamp which support the tightening torque are reduced by a lengthening of the lever arm with respect to the axis of the headed bolt.

Pipe clamp with a headed bolt for securing a pipe connection

A soot burn-off filter including a monolithic filter block made of porous ceramic with a multiplicity of channels which extend in the direction of flow of the exhaust gases of a combustion engine. The channels are sealed alternately at the ends by plugs and are separated from one another by porous partition walls. The partition walls are provided with a catalytic coating and have an increased flow resistance in a region at the downstream end of the filter, the partition walls in this region being of gastight design and the catalytic coating of the partition walls ending in a region upstream of the gastight region of the partition walls.

Gas filter with catalytic coating and a gastight downstream region

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Stuttgart, Germany

Gerd Tiefenbacher