Porous burner diesel engine

[cicididi]

In the engines of this invention the fuel is spread out over the interior pore area of a porous burner diesel volume and the large area of contact with air needed for rapid burning is obtained in this way. The fuel may burn in three ways: partial burning of evaporated fuel in the pore spaces; partial burning of solid carbon fuel deposits in the pore spaces; complete burning of the partial oxidation products outside the pore spaces during expansion.
Several engine cycles can be used to burn up any solid carbon deposits formed from the fuel so these engines can efficiently utilize high viscosity residual fuels and slurries of solid char fuels in oil even at very small piston diameters.