Patent ID: 6152687
Filing Date: 2000-11-28
Classification: F04D

Abstract:
A liquid fuel feed pump with a driven impeller (2) which rotates in a pump casing (1) and which has, on at least one of it's end faces (3,4), a ring of guide vanes (6, 6a, 6b) delimiting vane chambers (10, 10a, 10b), and with part-annular channels (8, 9) which is arranged in the pump casing (1) in the region of the guide vanes (6, 6a, 6b), and which forms, with the vane chambers (10, 10a, 10b) a feed chamber (11, 12) providing for feeding a liquid from an inlet port (18) to an outlet port (19) and has a compression region (22) with a cross section tapering over a limited angular sector, characterized in that the part-annular channels have a calming region (21) extending over an angular sector of about 50.degree., starting at the inlet port (18) which is then followed by a compression region (22) that extends over an angular sector of about 70.degree..