Patent Number: 6,167,755

Title: Device for determining load in an internal combustion engine

Abstract: The device for determining load in internal combustion engines includes a pressure sensor connected with a combustion chamber of an internal combustion engine which produces an output signal depending on a combustion chamber pressure, a crankshaft angle sensor for detection of a crankshaft angle of the internal combustion engine and a processor for determining a load of the engine from relative values of the output signal of the pressure sensor at predetermined crankshaft angles. The processor includes a device for determining the load from a pressure difference between combustion chamber pressures measured at two different predetermined crankshaft angles (x1, x2) or from two integrated pressure values. The integrated relative pressure values are obtained by integration of a pressure-proportional output signal of the pressure sensor between two different predetermined crankshaft angles.

Inventors: Damson; Eckhart (Gerlingen, DE), Denz; Helmut (Stuttgart, DE), Klenk; Martin (Backnang, DE), Herden; Werner (Gerlingen, DE), Moser; Winfried (Ludwigsburg, DE), Kuesell; Matthias (Kornwestheim, DE)

Assignee: Robert Bosch GmbH

International Classification: F02D 41/18 (20060101); F02D 35/02 (20060101); F02D 41/32 (20060101); G01M 15/08 (20060101); G01M 15/04 (20060101); G01M 015/00 ()

Expiration Date: 01/02/2018