Method and device for charge detection in a cylinder of an internal combustion engine
An internal combustion engine and cylinder technology, applied in electrical control, mechanical equipment, engine control, etc., can solve the problems of limited charge detection accuracy and large amount of calculation, and achieve the effect of reducing errors and improving stability
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[0082] An embodiment according to the invention for charge detection in an internal combustion engine is in Figures 1 to 4D shown in . The exemplary embodiment relates to determining a fresh air mass in a cylinder of an internal combustion engine.
[0083] figure 1 A flow chart of the method according to the invention for carrying out the inflation detection 10 is shown. In a first step 100, fresh air mass measurements are provided as a function of the exhaust backpressure. exist figure 2 An example of measured data is shown in . figure 2 At constant speed n=1300 per minute and constant inlet valve position -20°KW and outlet valve position 5°KW for different intake manifold pressures p s1 =1400mbar,p s2 =1600mbar,p s3 =1800mbar,p s4 = 2200mbar and p s5 =2600mbar shows fresh air quality m fl The measured value of 30 is related to the exhaust back pressure p ag Relationship. Parts of the data set are displayed in each case for the measured values of the constant...
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