Emcon Technologies LLC

Arvin Meritor Technology, LLC

Arvin Technologies, Inc.

Emcon Tehnologies Germany (augsburg) Gmbh

Faurecia Emissions Control Technologies Usa, LLC

Gregg Speer

Marco Ranalli

Andreas Mayr

Peter Kroner

Stefan Schmidt

Clive D Telford

David Herranz

A Steven Walleck

Helmut Venghaus

Lee Watts

Shan Shih

Markus Engelbertz

Egon Hassel

Johannes Hartick

Winfried Willeke

Claus Gellermann

Jose-Luis Eguizabal

An exhaust gas heat exchanger system of a combustion engine has a bypass duct and a heat exchanger duct with a heat exchanger. A valve is controlled by determining when heat is to be transferred from exhaust gas flowing through the exhaust system to the heat exchanger. When heat is to be transferred, the valve is switched into a first position in which all of the exhaust gas flows through the heat exchanger duct. A pressure drop across the heat exchanger system is monitored either directly or indirectly. If the pressure drop reaches a predefined limit, the valve is switched into an intermediate position, resulting in a smaller portion of the exhaust gas flowing through the heat exchanger duct than when the valve is in the first position and a remaining portion flowing through the bypass duct, thereby reducing the pressure drop across the heat exchanger system. If the pressure drop again reaches a predefined limit, the valve is switched into a second position, resulting in an even smaller portion of the exhaust gas flowing through the heat exchanger duct, thereby further reducing the pressure drop across the heat exchanger system.

Method for controlling a valve for an exhaust system

An apparatus comprises an emissions trap and a loading determination device. The emissions trap is configured to trap emissions present in exhaust gas and comprises a first local region and a second local region. The loading determination device is configured to determine emissions loading of the first local region and emissions loading of the second local region. An associated method is disclosed.

Method and apparatus for determining local emissions loading of emissions trap

An apparatus comprises an emissions trap and a transfer function device. The transfer function device is configured to determine a transfer function of the emissions trap wherein the transfer function is representative of loading of the emissions trap. An associated method is disclosed.

Method and apparatus for determining loading of an emissions trap by use of transfer function analysis

An apparatus comprises an exhaust system and an injection system. The injection system is configured to vaporize a first liquid portion of an agent into at least one bubble so as to inject a second liquid portion of the agent into the exhaust system by use of the at least one bubble for delivery of the agent to an emission abatement device of the exhaust system. An associated method is disclosed.

Method and apparatus for bubble injection of agent into exhaust gas for use with emission abatement device

An exhaust gas system of a vehicular internal combustion engine comprises a plurality of exhaust gas catalytic converters having different working temperature ranges. Depending on the temperature of the exhaust gas the latter is directed to the one or those converters into whose working temperature range the exhaust gas temperature falls.

Exhaust gas system and method of directing a flow of exhaust gas of a vehicular internal combustion engine

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Dachau, Germany

Gregg Speer