nvironmental issues and lower fuel conE sumption require improved combustion engines. Several trends point toward use of feedback control directly from combustion, instead of using indirect measurements (as is mostly done today). One such trend is based on new sensors or improved interpretation of available sensor signals. An example is ionization current sensing, obtained by applying a sense v...

In order to detect knock in spark plug engines generally structure–borne sound signals measured by acceleration sensors mounted on the engine housing are used. At test bed engines additional pressure sensors measuring the pressure inside the combustion chamber deliver a reference signal to adjust the parameters of knock detection based on the sound signal. We show by experimental results that t...

Nowadays, many data analytics and machine learning problems contain millions or billions of training data and parameter data, it is obvious that the Distributed Processing mode is the only choice for many applications. Within DAAL's framework, the communication layer of the Distributed Processing mode is left to the users, which could be Hadoop, Spark, MPI, or any of the user-defined middleware...

We propose two virtual sensors which estimate the location of the pressure peak and the air-fuel ratio from measurements of the ionization current across the spark plug gap. The location of pressure peak virtual sensor produces estimates on a cycle-by-cycle basis for each of the cylinders. These estimates are twice as good as estimates obtained from a linear model. The air-fuel ratio virtual se...

The application of ion current signals is one of the most recent approaches in engine management systems. By applying a small constant DC voltage across the electrodes of the spark plug and measuring the current through the electrode gap, the state of gas may be measured and investigated. In this paper a computer code is developed in order to analyze the state of gas during the combustion p...

Knock research is an essential study because knock limits spark-ignition (SI) engine power output, durability, noise, fuel consumption, and emission performance. The thermal efficiency of can be improved by increasing the compression ratio, but at same time it leads to possibility end gas autoignition inside chamber. objective this work was show effect three different ratios (CRs) 8.5, 9.5, 10....