PRESSURE-MEASURING DEVICE WITH ADDITIONAL DIAPHRAGM

摘要

The invention relates to a pressure-measuring device for sensing a pressure in a combustion chamber (26) of an internal combustion engine with a force-transmitting body (12) which is arranged in a housing (14) and is exposed to the combustion chamber (26), and transmits the combustion chamber pressure to a pressure-measuring unit (50) at least indirectly by means of an axial movement, and having a flexurally elastic diaphragm (16) which is arranged between the force-transmitting body (12) and the housing (14). The flexurally elastic diaphragm (16) is of spring design in order to implement the axial movement of the force-transmitting body (12) within the housing (14). The flexurally elastic diaphragm (16) is arranged in front of a flexurally elastic additional diaphragm (30) on the combustion chamber side, which additional diapragm (30) seals the flexurally elastic diaphragm (16) with respect to the combustion chamber (26).