The　hydrogen-fueled　Wanke　rotary　engine　is　a　promising　power　system　that　has　both　high　power　and　eco-friendly　properties.　This　work　investigated　the　effect　of　ignition　timing　on　a　dual-spark　plugs　synchronous-ignition　hydrogen-fueled　Wankel　rotary　engine　under　low　speed,　part　load　and　lean　combustion.　The　results　show　that　with　delaying　the　ignition　timing,　CA0-10　is　shortened　first　and　then　lengthened　and　CA10-90　is　consistently　shortened.　When　the　CA50　is　located　between　35　and　40　degrees　CA　ATDC,　the　maximum　brake　torque　can　be　realized.　Besides,　the　selection　of　ignition　timing　needs　to　consider　the　＂trade-off＂　relationship　between　the　combustion　phase　and　corresponding　in-cylinder　pressure.　The　maximum　brake　torque　ignition　timing　is　between　5　and　10　degrees　CA　ATDC.　And　there　is　also　a　＂trade-off＂　relationship　between　stability　and　thermal　load　when　ignition　timing　is　selected.　In　addition,　HC　and　NO　emissions　will　not　become　the　problem　limiting　the　power　performance　of　hydrogen-fueled　Wankel　rotary　engine　under　this　operating　condition.　(c)　2022　Published　by　Elsevier　Ltd　on　behalf　of　Hydrogen　Energy　Publications　LLC.