Device null in order to detect the pressure fluctuation in the combustion chamber of the internal combustion engine

摘要

in the combustion chamber of a brennkraftmaschine pressure fluctuations with the help of a spark plug to be determined between the mittelelektrode (11) and (12) masseelektrode meu00dfspannung (um) is created. the meu00dfspannung () is a meu00dfkreis is generated, via a diode (20) or a resistance of zu00fcndkreis decoupled.the result of the meu00dfspannung (to) specific ionenstrom (ii) is a measure of the pressure fluctuations. zu00fcndkreis and meu00dfkreis lead the to the masseelektrode (12) smaller mittelelektrode (11) in a positive light. meu00dfspannung, which compared to conventional facilities with a negative voltage, a significant signalverbesserung is achieved (figure 1).