In a mixing bowl, combine flour,2 cups sugar,baking powder and salt. Combine eggs,oil,orange juice and vanilla:add to flour mixture and mix well. In a bowl, toss apples with cinnamon and remaining sugar. Spread a third of the batter into a greesed 10 in tube pan. Top with half apples. Repeat layers. Carefully spead remaining batter over apples. Bake at 180ºC or 5565 minutes or until wooden pick inserted near center comes out clean. Cool in pan 15 minutes before removing to a wire rack: cool. Dust with confectioners' sugar