The combustion process design includes the complete alternation of load and combustion process, as both affects each other. The intake process creates the basis of the Turbulent Kinetic Energy (TKE) of the chamber when the valves are closed and the piston moves up. During the compression stroke TKE is changing, the flow regime disolve in smaller vortexes and friction. This lead to further homogeneity of fuel and air. Shortly before Top Dead Center (TDC) a bigger amount of the Vortex regime is lost and now the geometrical design introduce further combustion process supporting TKE. During that the ignition inflammed the mixture, the flame front starts from there and run down the chamber until the chamber wall are reached and quenches the flame. The exhaust stroke has itself a further huge impact on the combustion process and it's efficiency, but that is another story. If you want to know more how we improve your engine performance, contact us.

What do we do to improve the combustion process? The process of the combustion process design and cylinder pressure indication measurement is:

• to measure (mobile measurement setup) the actual status of the combustion pressure curve to be able to calculate the combustion characteristics, e.g. combustion duration, heat release curve, Indicated Mean Effective Pressure and so on
• to analyse the combustion chamber geometry and essential combustion influencing design aspects like the squish height and area
• to compare the application demands with the given geometrical characteristics and to derive measures - geometrical-wise - to improve the combustion process design
• to calculate the differences based on a 1D-simulation with the actual engine setup and measured combustion characteristics and an improved combustion process design to show what effect improvements can have on the e.g. wide open throttle performance (torque and power curve)
• to derive further measures of the combustion chamber and intake and exhaust port design to improve the combustion process design
• to specify and if necessary to design the new combustion chamber in 3D and if needed intake and exhaust port as well
• to assemble the engine according specifications, blue print it and re-measure it.

No matter what fuel, fuel-air-mixing-concept, 2- or 4-stroke, natural aspirated or boosted, we optimize your combustion system allways in a haulistic application dependend approach to get the best efficiency and performance out of it.