EP 0133497 B1 19910710 - REGENERATIVE PUMP FOR TRANSFERRING A FUEL
Title (en)
REGENERATIVE PUMP FOR TRANSFERRING A FUEL
Publication
Application
Priority
DE 3327922 A 19830803
Abstract (en)
[origin: EP0133497A2] A regenerative pump is proposed which serves in particular for conveying fuel to a fuel supply system for internal combustion engines. The pump comprises an impeller (1) which is rotatably mounted in a pump housing (3), the outer circumferential area of which impeller has blades forming blade grooves (21). A first characteristic geometric feature for obtaining optimum pump dimensions is the value Rm = SL which should lie within a range of 0.4 to 2 mm. At the same time, S signifies the cross-sectional area enclosed between the conveying channel wall (22, 24) and the impeller circumference (5, 6, 7, 8) and L signifies the circumferential length (5, 6, 7, 8) of the impeller (1) dipped into the conveying channel (2). A second characteristic geometric feature Rs = B/E and a third characteristic geometric feature Ra = A2/A1 of the pump should lie within a range of 0.5 to 1.5. Here, B is the axial width of the impeller (1), E is the radial blade height of the impeller (1), A1 is the sum of the two partial surfaces of the cross-sectional area S extending to the side of the impeller (1) and A2 is the remaining partial area of the cross-sectional area S. <IMAGE>
IPC 1-7
IPC 8 full level
F04D 5/00 (2006.01); F04D 29/18 (2006.01)
CPC (source: EP US)
F04D 29/188 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0133497 A2 19850227; EP 0133497 A3 19860716; EP 0133497 B1 19910710; DE 3327922 A1 19850214; DE 3327922 C2 19940210; DE 3484783 D1 19910814; JP S6047894 A 19850315; US 4938659 A 19900703
DOCDB simple family (application)
EP 84108575 A 19840720; DE 3327922 A 19830803; DE 3484783 T 19840720; JP 14771184 A 19840718; US 62348684 A 19840622