METHOD FOR AVOIDING PRE-IGNITIONS DURING THE OPERATION OF AN INTERNAL COMBUSTION ENGINE

摘要

A method for avoiding pre-ignitions during the operation of an internal combustion engine includes measuring a noise level of a combustion process using an acceleration sensor. An amplitude an amplitude of the measured noise level is measured to detect pre-ignitions. If, in the analysis, the measured noise level of a combustion cycle exceeds a limiting value n times, a safety operating mode of the internal combustion engine for reducing an effecting compression in the combustion chamber is activated. The safety operating mode is maintained if exceeding of the amplitude limiting value is also detected in subsequent combustion cycles of the internal combustion engine.

主权项

1. A method for avoiding pre-ignitions during the operation of an internal combustion engine, the method comprising:
measuring a noise level of a combustion process using an acceleration sensor; analyzing an amplitude of the measured noise level to detect pre-ignitions; activating a safety operating mode of the internal combustion engine for reducing an effective compression in a combustion chamber of the internal combustion engine on a sustained basis if, in the analysis, the measured noise level of a combustion cycle exceeds a limiting value n times; and maintaining the safety operating mode activated if exceeding of the amplitude limiting value is also detected in subsequent combustion cycles of the internal combustion engine.