Avl List Gmbh

Gabor Hrauda

Hans Felix Seitz

Wolfgang Kriegler

Klaus Landfahrer

Robert Roithinger

Wolfgang Cartellieri

Christian Auer

Hans Aufinger

Walter Reczek

Gernot Graf

Ulrich Veit

Rolf Dreisbach

The invention relates to a method for carrying out an internal exhaust gas recirculation to the combustion chamber of a Diesel internal combustion engine according to which the inlet valve is briefly opened during the exhaust cycle. According to the invention, the start (H) of the inlet valve approach stroke (H) lies in the range of 180&#xb0; to 210&#xb0; crank angle (KW) after the upper dead center (OTZ) of ignition, thereby improving emission performance in the low speed range and in the medium and high speed range.

Method for carrying out an internal exhaust gas recirculation to the combustion chamber of an internal combustion engine

The invention relates to a multicylinder internal combustion engine with an engine braking system including intake and exhaust valves and at least one additional brake valve for each cylinder, the exhaust valves opening into an exhaust system. Further a preferably tubular pressure reservoir with a pressure regulating valve is provided, into which braking channels departing from the brake valves are leading, so that a gas exchange between the individual cylinders is possible upon actuation of the brake valves.

Multicylinder internal combustion engine with an engine braking system

An internal combustion engine, especially a diesel engine, with at least one combustion chamber, an intake system having at least one intake manifold, an exhaust system having at least one common exhaust line, and an exhaust gas recirculation system for reintroducing exhaust gas into the intake system, the exhaust gas recirculation system including at least one exhaust gas recirculation line with an exhaust gas recirculation valve the exhaust gas recirculation line branching off directly from the combustion chamber, the EGR valve being positioned preferably at the branch-off, in order to reduce Nox emissions and ensure good fuel economy.

Internal combustion engine, especially diesel-internal combustion engine

In an internal combustion engine with an exhaust gas turbocharger comprising a charge-air pipe and an exhaust gas recirculation pipe for a partial stream of the exhaust gas, a nozzle-diffuser unit is provided in the charge-air pipe, into which unit the recirculation pipe opens in a passage of restricted cross-section. In order to achieve high turbine efficiency as well as high exhaust quality, it is provided in the invention that the exhaust gas turbocharger be configured at least as a twin-entry unit, and that at least two exhaust gas flow paths be conducted separately to the entrance into the exhaust gas turbocharger, and that an exhaust gas recirculation branch depart from each exhaust gas flow path, and further that a control valve be positioned in each recirculation branch for regulation of the exhaust gas recirculation.

Internal combustion engine with an exhaust gas turbocharger

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Graz, Austria

Gabor Hrauda