The　Wankel　rotary　engine　(WRE)　is　widely　used　in　the　fields　of　unmanned　aerial　vehicles　and　range　extenders　due　to　its　superior　power-to-weight　ratio.　However,　the　rotor　piston　bears　an　intense　thermal　load　during　operation.　This　study　focuses　on　the　implementation　of　the　coupled　1D-3D　model.　The　influence　of　ECFs　on　WRE　performance　characteristics　and　emissions　and　improving　WRE　performance　characteristics　and　emissions　at　different　operating　parameters　(speeds　and　hydrogen　enrichment)　with　ECFs　are　studied.　The　simulation　results　demonstrated　that　radial-fins　have　a　more　significant　effect,　reducing　the　fire-face＇s　average　temperature　by　49.03　K　and　increasing　the　in-cylinder　mass　by　6.4　%.　Compared　with　no-fins,　radial-fins　can　increase　pressure　by　4.4　%　and　HRR　by　5.6　%.　At　the　same　time,　the　NOx　is　reduced　by　15.60　%,　and　the　CO　is　slightly　increased　by　0.93　%.　At　different　speeds,　the　ECF　structure　can　improve　the　engine　performance.　The　ECFs　are　more　evident　at　low　speeds,　which　can　increase　the　indicated　power　by　3.13　%　compared　with　the　original　engine.　Compared　with　the　gasoline-fueled　WREs,　using　radial-fins　can　lead　to　more　apparent　performance　improvement　for　hydrogen-enriched　WREs.　This　paper　will　provide　insight　into　the　feasibility　of　ECF　configuration　to　improve　the　performance　of　WREs　in　engineering　applications.