Daimler Chrysler Ag

Daimler Ag

Rolf Hutmacher

Siegfried Sumser

Wolfram Schmid

Alois Raab

Gerhard Koenig

Alfred Küspert

Karl Maderthaner

In an internal combustion engine having at least one cylinder, in which a combustion chamber is delimited between a piston and a cylinder head, a fuel injector, is arranged in the cylinder head and has an injection nozzle with a plurality of injection bores. A piston depression is arranged in the piston, and a compression projection, with a projection cone angle, is positioned opposite the injection nozzle in the piston depression. The injection bores are formed such that, during a fuel injection in a range from 20&#xb0; CA before top dead center to 35&#xb0; CA after top dead center, the fuel jets emerging from the injection bores with a fuel cone angle impinge on the piston depression and are guided by a piston depression surface. The injection bores and the compression projection are formed such that a generated ratio of fuel cone angle to projection cone angle is in a range between 0.95 and 1.36, so that the injected fuel mass is distributed uniformly within the piston depressions, and a mixture of fuel with combustion air is intensified.

Internal combustion engine

In an internal combustion engine having an exhaust system with a turbocharger including an exhaust gas turbine disposed in the engine exhaust duct, a bypass line connected to the exhaust duct upstream of the turbine including a valve for diverting exhaust gas flow and bypassing the turbine, the valve includes a valve body having first and second exhaust gas flow control openings of different flow cross-sections and being adjustable between a first position in which the first flow control openings is in communication with the exhaust gas duct, a second position in which the second flow control opening is in communication with the exhaust gas duct and a blocking position in which exhaust gas bypass flow through the valve is blocked.

Internal combustion engine having an exhaust-gas turbocharger

An internal combustion engine has compression ignition, in which fuel is injected as a pre-injection and main injection directly into a working space by means of an injection nozzle having a plurality of injection holes, with the pre-jection taking place in a clocked manner. In order to minimize the moistening of the walls of the combustion chamber, a combustion chamber is provided, in which are arranged an injection nozzle in the region of a cylinder center axis in the cylinder head and a piston recess arranged in the piston head, with an approximately centrally situated piston recess projection being arranged in the piston recess. The stroke of a nozzle needle of the injection nozzle is set in such a manner that a restricting of the range of the injected fuel jets is obtained.

Self-igniting internal combustion engine

Growing community of inventors

Remshalden, Germany

Rolf Hutmacher