Audi Ag

Fev Motorentechnik Gmbh

Jorg Ballauf

Daniel Beese

Jose Geiger

Holger Braun

Siegmar Lampe

Martin Winter

A method for controlling boost pressure in an internal combustion engine is provided. The method includes a boost pressure control device, which is used to control the boost pressure in an internal combustion engine. The boost pressure control device includes a bypass unit, preferably in the exhaust gas flow of the internal combustion engine. The bypass unit includes an actuating device which enables the bypass unit when a predetermined actuating device setpoint value is reached. An adapted value is established as the correction value (pwgad) as a function of preset and/or detected internal combustion engine parameters (rlsol, nmot). The adapted value is used to adapt the setpoint value for the actuating device, which is specified as a function of the operating point, for a predetermined control deviation between a boost pressure actual value and a boost pressure setpoint value.

Method for controlling boost pressure in an internal combustion engine for motor vehicles

A reciprocating internal-combustion engine having at least two gas intake ports () with gas intake valves (), at least one gas exhaust port () with a gas exhaust valve () and at least one ignition device () per cylinder () is provided. The engine can also include a combustion chamber () formed by a cylinder cover () and a crown () of a piston (). A trough-shaped recess () can be provided in the piston crown () and is bounded by a trough base () and side walls (). The recess () can intersect a roof ridge () on the piston crown () and the trough base () slopes towards a fuel injection nozzle () and ends in a wall zone () extending steeply upwards on its side facing the fuel injection nozzle ().

Reciprocating internal-combustion engine with direct fuel injection by means of an injector arranged on the intake side

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Wettstetten, Germany

Jorg Ballauf