Method and equipment for detecting misfire of diesel engine
A diesel engine and equipment technology, applied in the direction of internal combustion engine testing, etc., can solve problems such as inaccurate judgment, achieve the effects of improving judgment accuracy, resisting signal interference, and improving accuracy
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[0042] In order to enable those skilled in the art to better understand and implement the technical solution provided by the present invention, several technical terms in this field are introduced below.
[0043] Misfire: A phenomenon in which the fuel injector does not inject fuel or the fuel injected basically does not burn.
[0044] Acceleration between cylinders: calculate the angular acceleration between cylinders = (the average angular velocity of the current cylinder - the average angular velocity of the previous cylinder) / the sum of the time of the corresponding teeth of the two cylinders;
[0045] For example: for a crankshaft with 60 teeth in one circle, spray 3 times; then, the average angular velocity: extract the instantaneous rotational speed corresponding to 20 teeth of the current cylinder, multiply it by 2π and divide by 60 to get the instantaneous angular velocity corresponding to 20 teeth, and then take the average value;
[0046] Note: For the first cylin...
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