초록 ▼

This invention provides a controller for controlling the combustion of an internal combustion engine. The controller comprises pressure sensors for detecting the pressure in a set of cylinders. The detected pressure profile in the cylinders is used to determine the combustion parameters, based on wh

This invention provides a controller for controlling the combustion of an internal combustion engine. The controller comprises pressure sensors for detecting the pressure in a set of cylinders. The detected pressure profile in the cylinders is used to determine the combustion parameters, based on which the drive control parameters are determined. The combustion of the engine is normally controlled with those drive control parameters while the control is performed by means of predetermined parameters in the event of no combustion occurring. In determining the combustion parameters, the controller in accordance with this invention calibrates the pressure profile detected by the pressure sensor to eliminate the modulus and the offset of the pressure sensor from the pressure profile. The modulus and the offset are renewed on a proper basis to make up for the drawback that the modulus and the offset fluctuate in response to changes in temperature.

대표청구항 ▼

In a controller for an internal combustion engine operating on the basis of drive control parameters comprising: pressure sensing means, having a variable transducing modulus and pressure offset between an actual pressure and a detected pressure in the cylinders of the engine, for detecting pressure

In a controller for an internal combustion engine operating on the basis of drive control parameters comprising: pressure sensing means, having a variable transducing modulus and pressure offset between an actual pressure and a detected pressure in the cylinders of the engine, for detecting pressure in the cylinders of the engine and for generating an output representing a detected pressure profile; calibrating means comprising (i) means for generating a renewed modulus and a renewed offset of said pressure sensing means, (ii) means for calibrating the output from said pressure sensing means on the basis of said renewed modulus and renewed offset of said pressure sensing means to produce a calibrated pressure profile in the cylinders, and (iii) means for determining the combustion parameters of the engine on the basis of said calibrated pressure profile; and control means responsive to said calibrating means comprising means for determining the drive control parameters of the engine on the basis of said combustion parameters, and means for controlling combustion of the engine normally on the basis of said drive control parameters but, in predetermined operating conditions of the engine, on the basis of predetermined parameters.