COMBUSTION-CHAMBER PRESSURE SENSOR, INTERNAL COMBUSTION ENGINE, AND METHOD FOR MEASURING A COMBUSTION CHAMBER PRESSURE IN A COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a combustion-chamber pressure sensor (21) for measuring a combustion-chamber pressure in a combustion chamber of an internal combustion engine, which combustion-chamber pressure sensor comprises a sensor element (10), which converts a pressure (p) acting on the sensor element (10) into an electrically measurable quantity. The sensor element (10) is designed as an electrically conductive powder that experiences a change in the electrical resistance (R) thereof when the pressure (p) acting on the sensor element (10) changes, and the sensor element (10) is arranged within a pressure tube (8) in such a way that a change in the combustion-chamber pressure acting on the pressure tube (8) causes a change in the pressure (p) acting on the sensor element (10). The invention also relates to an internal combustion engine that comprises at least one combustion-chamber pressure sensor (21, 22, 23, 24) according to the invention. The invention further relates to a method for measuring a combustion-chamber pressure in a combustion chamber of an internal combustion engine, wherein an electrical resistance (R) of a sensor element (10) is measured, wherein the sensor element (10) is designed as an electrically conductive powder that experiences a change in the electrical resistance (R) thereof when the pressure (p) acting on the sensor element (10) changes, and wherein the the sensor element (10) is arranged within a pressure tube (8), which protrudes into the combustion chamber, in such a way that a change in the combustion-chamber pressure acting on the pressure tube (8) causes a change in the pressure (p) acting on the sensor element (10).