초록 ▼

A method is disclosed for the recognition of irregular combustion processes in an internal combustion engine. In this method, a parameter characterizing the course of combustion－for example, pressure, light in the combustion chamber, sound and the like－is detected by means of a sensor, and the senso

A method is disclosed for the recognition of irregular combustion processes in an internal combustion engine. In this method, a parameter characterizing the course of combustion－for example, pressure, light in the combustion chamber, sound and the like－is detected by means of a sensor, and the sensor signal is integrated within a predetermined crankshaft angle range or time interval of the combustion cycle and compared with a signal integral obtained in a previous cycle. The signal integrals of cycles directly following one another are compared, and monitoring is performed as to whether a signal increase above a predetermined threshold is occurring, in the case where combustion has heretofore been regular, or the signal is decreasing by more than a predetermined amount, in the case where irregular combustion has been taking place. In the first case, the result is the recognition of irregular combustion; in the second case, the result is the recognition of the end of the irregular combustion.

대표청구항 ▼

A method for recognizing the knocking of an internal combustion engine, in which a sensor signal is integrated within an interval of the combustion cycle to produce an intelligence signal, at least one intelligence signal associated with the knocking process is compared with at least one reference s

A method for recognizing the knocking of an internal combustion engine, in which a sensor signal is integrated within an interval of the combustion cycle to produce an intelligence signal, at least one intelligence signal associated with the knocking process is compared with at least one reference signal corresponding to the background noise and a recognition signal is emitted whenever the intelligence signal exceeds the reference signal in a prespecified manner, wherein, in accordance with the invention, the intelligence signal occurring during one combustion cycle is stored and, during the next combustion cycle, this stored intelligence signal is used as a reference signal and is compared with the intelligence signal appearing at that time, and wherein, in the event of the emission of the recognition signal for knocking combustion during a combustion cycle, the reference signal used during this combustion cycle is also used during the following combustion cycle.