Patent Number: 6,309,173

Title: Delivery pump

Abstract: A feed pump (2) designed for feeding fuel in a motor vehicle, with an impeller (7) having vane chambers (10, 10a, 11, 11a) delimited by guide vanes (12, 13), and in casing parts (3, 4) adjacent to the impeller (7) and having part-annular channels (14, 15) arranged in the region of the vane chambers (10, 10a, 11, 11a), has a degassing duct (19), the start of which is arranged downstream of an inlet port (8). Some of the vane chambers (10) are connected to the degassing duct (19) via pockets (20) worked into the impeller (7). By means of this degassing duct (19), gas bubbles present in the fuel are discharged reliably from the feed pump (2).

Inventors: Marx; Peter (Kassel, DE)

Assignee: Mannesmann VDO AG

International Classification: F04D 9/00 (20060101); F04D 5/00 (20060101); F04D 29/18 (20060101); F04D 029/42 ()

Expiration Date: 10/30/2018