EP 1276992 A1 20030122 - GEAR-WHEEL PUMP, IN PARTICULAR FOR A HIGH-PRESSURE FUEL PUMP
Title (en)
GEAR-WHEEL PUMP, IN PARTICULAR FOR A HIGH-PRESSURE FUEL PUMP
Title (de)
ZAHNRADPUMPE, INSBESONDERE FÜR EINE HOCHDRUCK-KRAFTSTOFFPUMPE
Title (fr)
POMPE A ENGRENAGES, EN PARTICULIER POUR POMPE A CARBURANT HAUTE PRESSION
Publication
Application
Priority
- DE 0101146 W 20010324
- DE 10018348 A 20000413
Abstract (en)
[origin: WO0179699A1] The invention relates to a gear-wheel pump comprising a housing (18), two gear-wheels (14, 16) which are located in said housing and which intermesh and at least one groove (22) which is configured in the housing on the pressure side of the gear-wheel pump. The aim of the invention is to prevent cavitation damage at high speeds. To achieve this, the groove has a first section (24), extending from the pressure side, in which the base of the groove (22) is a short distance away from the tips of the teeth (20) of the gear-wheel and a second section (26), which adjoins the first section and in which the base of the groove (22) is a maximum distance away from the tips of the teeth, said maximum distance being greater than the distance in the first section. The first section extends over a smaller angular range ( alpha ) than the second section and overall the groove extends over an angular range ( alpha , beta ) which is slightly greater than the angular range between two teeth (20).
IPC 1-7
IPC 8 full level
F04C 2/18 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP KR US)
F04C 2/18 (2013.01 - KR); F04C 15/0049 (2013.01 - EP US)
Citation (search report)
See references of WO 0179699A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 0179699 A1 20011025; BR 0105929 A 20020312; BR 0105929 B1 20090505; DE 10018348 A1 20011025; DE 50112762 D1 20070906; EP 1276992 A1 20030122; EP 1276992 B1 20070725; JP 2003531339 A 20031021; KR 100691209 B1 20070309; KR 20020025076 A 20020403; RU 2267650 C2 20060110; TW 468002 B 20011211; US 2002106296 A1 20020808; US 6527530 B2 20030304
DOCDB simple family (application)
DE 0101146 W 20010324; BR 0105929 A 20010324; DE 10018348 A 20000413; DE 50112762 T 20010324; EP 01927598 A 20010324; JP 2001577066 A 20010324; KR 20017015991 A 20011212; RU 2002100359 A 20010324; TW 90107937 A 20010403; US 949002 A 20020328