Robert Boschgmbh

Mohamed Youssef

Matthias Schueler

Michael Kessler

Jens Damitz

Axel Loeffler

Arnold Engber

Ruediger Fehrmann

Vincent Dautel

Wolfgang Fischer

Haris Hamedovic

Andreas Rupp

Franz Raichle

Peter Skala

Tobias Kress

Christian Mader

Joerg Breuninger

Christian Hugel

Methods for ascertaining the combustion noises of an internal combustion engine need only a structure-borne noise sensor and may be carried out using little computing power.

Method for ascertaining the noise emission of an internal combustion engine

A method for determining cylinder-specific combustion features of an internal combustion engine, the cylinder-specific combustion features being ascertained from a variable which represents the crankshaft speed, especially being ascertained from a signal of a crankshaft sensor or camshaft sensor. The cylinder-specific combustion features include a combustion position of at least one cylinder and/or a torque of the crankshaft.

Method for determining cylinder-specific combustion features of an internal combustion engine

A method for controlling an internal combustion engine calculates the generated internal torque for each cylinder on the basis of the signal generated by an angle of rotation sensor for detecting the angle of rotation of the crankshaft, so that a rapid and precise regulation of the torque supplied by the internal combustion engine may be achieved.

Method and device for operating an internal combustion engine

A method and a device for controlling an internal combustion engine, in which a noise variable is compared to a setpoint value, and an actuating variable is specified based on the comparison. The noise variable is computed using a weighted summation of at least two characteristics.

Method and device for controlling an internal combustion engine

A device and a method for controlling and/or regulating an internal combustion engine, in particular an internal combustion engine having direct injection. A regulation adjusts a combustion state variable, that characterizes the combustion state, to a setpoint value. A control and/or a regulation influences a torque variable that characterizes the torque of the internal combustion engine and/or the noise variable that characterizes the noise of the internal combustion engine, using a control variable.

Method and device for controlling and/or regulating an internal combustion engine

In an internal combustion engine, a structure-borne noise generated in a combustion chamber is detected by a structure-borne noise sensor. A quantity is ascertained on the basis of the structure-borne noise signal. A reference quantity of an undrifted structure-borne noise sensor is ascertained for a certain reference operating state for the combustion chamber, during continuous operation of the engine the quantity is ascertained for the reference operating state, and from a change over time of the ascertained quantity with respect to the reference quantity, a drift of the structure-borne noise sensor is ascertained.

Method for operating an internal combustion engine

A device and a method for controlling an internal combustion engine, in particular a diesel engine, are described. Based on the signal from a structure-borne noise detector, parameters are determined which are used to regulate the internal combustion engine. At least one parameter is determined through an analysis that includes a filtering which selects at least two angular ranges.

A method and device for controlling an internal combustion engine. A first variable is predefined on the basis of a signal of a combustion chamber pressure sensor or a structure-borne noise sensor. This first variable characterizes the combustion process in the combustion chamber of at least one cylinder of the engine. A second variable is read from a characteristics map; a manipulated variable for influencing the combustion process is predefinable from this second variable. The characteristics map and/or the second variable read from the characteristics map are adapted as a function of at least one feature which is determined on the basis of the first variable.

Growing community of inventors

Nufringen, Germany

Mohamed Youssef