The Application of Interferometry to Air Fuel Ratio Measurement in Quiescent Chamber Diesel Engines

Applying holographic interferometry, local instantaneous air fuel ratio has been measured in the evaporating fuel spray injected into the quiescent combustion space of a motored engine cylinder.

Application of similarity principles indicate how the technique might be applied to the scaling of actual engine processes, thereby facilitating their study on smaller experimental engines and isothermal “bombs”.