This　paper　proposed　a　way　for　realizing　the　load　control　of　a　hydrogen-blended　gasoline　engine　running　at　the　wide　open　throttle　(WOT)　condition　through　lean　combustion.　The　engine　performance　of　the　original　gasoline　engine　and　a　3%　hydrogen-blended　gasoline　engine　running　at　the　WOT　and　lean　conditions　under　various　loads　at　a　constant　engine　speed　of　1400　rpm　was　compared.　The　experimental　results　showed　that　because　of　the　reduced　residual　gas　fraction　and　throttling　loss,　brake　thermal　efficiency　of　the　3%　hydrogen-blended　gasoline　engine　running　at　the　WOT　and　lean　conditions　was　obviously　higher　than　that　of　the　pure　gasoline　engine.　The　3%　hydrogen-blended　gasoline　engine　running　at　the　WOT　and　lean　conditions　produced　much　lower　particulate　and　CO　emissions　than　the　original　gasoline　engine.　Besides,　NOx　emissions　at　part　load　conditions　were　also　reduced　for　the　3%　hydrogen-blended　gasoline　engine　running　at　the　WOT　and　lean　conditions.　Copyright　(C)　2014,　Hydrogen　Energy　Publications,　LLC.　Published　by　Elsevier　Ltd.　All　rights　reserved.