Patent ID: 7072760
Filing Date: 2006-07-04
Classification: F02D,G01M

Abstract:
1. A method of detecting misfires of a mixture between a fuel and an oxidizing agent, in any one of the cylinders of an internal combustion engine having multiple-stroke operating cycles, such as two-stroke or four-stroke cycles, this method comprising the following steps: a) during at least some of the combustion phases in at least one of the cylinders, at an instant (t) of the engine operating cycles, a current value of an index I b) while the engine is operating, and on the basis of the current value at the instant t of the index I c) the current value of G(t) is compared with a predetermined threshold (S) dependent on the engine load (C) and/or speed (N), and d) a misfire is diagnosed when the value of G(t) crosses the threshold (S), characterized in that: the observation function G(t) is such that: Ī and E