To　investigate　the　effects　of　PODEn　(a　new　alternative　fuel　with　high　oxygen　content　and　cetane　number)　addition　on　fuel　economy,　combustion　and　emission　characteristics　of　a　China-　emission　standard　diesel　engine,　experiments　are　conducted　on　a　turbocharged　intercooled　high-pressure　common-rail　WP12.460　diesel　engine　fueled　with　PODEn/diesel　mixture　in　different　PODEn　blending　ratios　(volume　fractions　of　10%,　20%,　and　30%).　The　results　show　that　with　increasing　PODEn　blending　ratio,　the　peak　values　of　in-cylinder　pressure,　in-cylinder　temperature　and　transient　heat　release　rate　decrease　and　the　corresponding　combustion　phases　appear　in　advance.　The　combustion　duration　shortens　by　0.6°-2.1°　(crank　angle),　the　brake　thermal　efficiency　increases　by　2.43%,　and　the　equivalent　fuel　consumption　decreases　by　4.23%;　NOx　emission　increases　while　CO,　HC　and　soot　emissions　decrease.　Especially,　under　high　load　condition,　CO　and　soot　emissions　decrease　by　64.5%　and　75.8%,　respectively.　©　2020,　Editorial　Office　of　Journal　of　Xi＇an　Jiaotong　University.　All　right　reserved.