Macro‐Cellular Silicon carbide Reactors for Nonstationary Combustion Under Piston Engine‐Like Conditions

Strut lattice structures of reaction‐bonded silicon infiltrated silicon carbide ceramics (RB‐SiSiC) for air–fuel mixture formation and for nonstationary lean‐burn under pressure applications were fabricated. The lattice design with a high porosity >80% was shaped by indirect three‐dimensional printing. It was shown that pre‐ignition processes in the porous reactor are much faster than in a free combustion, especially at lower temperatures. Interaction of high velocity diesel jets with cylindrical strut ligaments of the SiSiC lattice structure offers a new possibility for quick and efficient fuel distribution (multi‐jet splitting) in space.