Efficient clean combustion

AVL X-ion™ Optical Combustion Analysis

Visualize your development with our modular Visiolution acquisition platform

In the past, conventional and optical combustion analysis were carried out separately, resulting in an increase in workload, time, and cost. Now there is AVL X-ionTM, our innovative AVL data acquisition system that brings together both tasks into a single solution.

Featuring high-precision photodiodes and a 24-bit AD converter, X-ion can manage 32 light-signals per base unit. This enables the use of Visio spark plugs for the local analysis of in-cylinder combustion events.

The modular data acquisition platform allows up to ten modules to be combined, resulting in an 80-channel system that can be used for knock, pre-ignition and particle source analysis. The high sensitivity and high dynamic range of the photodiodes allows the measurement of varied flame phenomena in spark ignition engines.

This data are then analyzed in AVL IndiCom 2TM software, along with cylinder pressure data. Combined with real-time calculations and trigger data, the platform provides detailed understanding of dynamic combustion scenarios.

A unique optical combustion analysis solution
X-ion enables crank angle-based in-cylinder flame radiation measurement. This facilitates the identification of soot particle formation in both stationary and transient engine states.

Sporadic or irregular self-ignition events are detected and localized by combining X-ion’s cylinder pressure and flame detection routines. With such an array of features, X-ion is a powerful and versatile powertrain development tool.

Additional benefits include:

  • Flame kernel formation detection
  • Flame kernel propagation pattern detection
  • Detection of self-ignition knock centers