Misfire Detection by Evaluating Crankshaft Speed - A Means to Comply with OBDII

Active torsional vibration control of reciprocating engines

“…Klenk, Moser, Mueller, & Wimmer, 1993;Azzoni et al, 1995;Williams, 1996), and subsequently for detecting and isolating nonuniform cylinder contributions and estimation of cylinderwise torque contributions (e.g. Kiencke & Nielsen, 2005; Taraza et al, 1998;Moskwa & Wang, 2000;Straky, 1997;Lee et al, 2001).…”

A methodology for increasing the signal to noise ratio for the misfire detection at high speed in a high performance engine

“…For misfire detection, it has been used the well-known LU misfire index proposed by Klenk, Plapp, and Moser (1990), Klenk, Moser, Muller, and Wimmer (1993), defined as…”

Multivariate statistical analysis strategy for multiple misfire detection in internal combustion engines

“…However, these methods require calculating and saving characteristic waveforms for various misfire patterns. Moreover, predefined threshold values are often indispensable to the identification of misfiring cylinders [8,16,20,21]; thus additional experiments should be carried out in advance.…”

“…Although this method provides sufficient information about the engine combustion conditions, it is time-consuming and requires an accurate dynamic model. It would be more efficient to evaluate the crankshaft kinetic energy variation caused by the combustions with the time periods, which are spent on the rotation of predefined angular sectors [16][17][18]. To distinguish misfire events from compression faults, two energy indices were extracted from an energy model of crankshaft [19].…”