An apparatus and method to detect abnormal combustion conditions for use as a feedback control of a lean burn reciprocating engine using ionization signals is presented. The system receives a succession of ionization signals for successive cycles of a runn...

An ignition apparatus including a primary (22) and a secondary (24) winding for producing a spark voltage, an ion current detection circuit (32) for producing an ion current signal (33), a slope detector (36) and a knock detector (34). The slope detector (...

The method involves igniting the engine with a 360 degree crankshaft sensor offset on the same cylinders (1-4), detecting the primary side voltage, detecting combustion duration, evaluating spark duration, determining camshaft position from spark duration ...

The method involves applying an alternating electrical voltage, or a voltage with an alternating component, to two electrodes (3,6) inside at least one cylinder. The measurement value is evaluated as a voltage across a measurement resistance. An ion curren...

The method involves deriving the ignition delay from the offset of a local maximum (104,109) in the variation of the ion current signal (101) wrt. an injection time (105,107). The parameters for a main injection are controlled depending on evaluation of th...

The procedure for the governing of an internal combustion engine entails establishing a series of measured values describing the pre-combustion in one of the cylinders produced by a pre-injection taking place before the main fuel injection. The series of m...

The arrangement has a measurement device (12) on at least one cylinder of the engine for forming a series of measurement values describing the combustion and an evaluation unit (20) connected to the measurement device for evaluating the measurement values....

The procedure for determining the commencement of a combustion in the cylinder in internal combustion engine includes taking a series of measured values and storing them, and which describe a physical characteristic of the gas and fuel mixture in the cylin...

During an internal combustion procedure over a fixed period of time a sequence of conductivity values is defined that is based on a portion of particles loaded as positive in an internal combustion gas. This sequence of conductivity values is evaluated in ...