Catalyzes the conversion of dTDP-4-amino-4,6-dideoxy-D-glucose (dTDP-D-Qui4N) to dTDP-4-acetamido-4,6-dideoxy-D-glucose (dTDP-D-Qui4NAc). acetyl-CoA + dTDP-4-amino-4,6-dideoxy-alpha-D-glucose = CoA + dTDP-4-acetamido-4,6-dideoxy-alpha-D-glucose + H(+) Bacterial outer membrane biogenesis; lipopolysaccharide biosynthesis. Belongs to the transferase hexapeptide repeat family.