EP 0811765 A2 19971210 - Internal combustion engine with two-stage internal gear pump
Title (en)
Internal combustion engine with two-stage internal gear pump
Title (de)
Brennkraftmaschine mit zweistufiger Innenläufer--Zahnradpumpe
Title (fr)
Moteur à combustion interne avec pompe à engrenages internes à deux étages
Publication
Application
Priority
DE 19622688 A 19960605
Abstract (en)
The engine comprises a two-stage internal runner gear wheel pump (1) with an intermediate runner (3), with separate pressure connections (6,7). Each pressure chamber (8,9) via a pressure limiting valve (7,20) integrated in the pump housing (4) is connected with the suction chamber (10,11). The second hydraulic circuit is used for the control and regulation of a valve drive-adjustment device, particularly a camshaft rotary angle adjustment device. The control and regulating pressure (P2) is greater than the delivery pressure (P1) for the lubrication system. The lubricating system hydraulic circuit, when a predetermined minimal pressure is not reached, is connectable via a controllable 4/2 path valve with the hydraulic circuit of the adjustment device. The path valve is integrated in the pump housing (4).
Abstract (de)
Für eine Brennkraftmaschine mit mittels Schmieröl versorgten gesonderten Hydraulikkreisen mit jeweils einer Pumpe wird zur Antriebsvereinfachung bei reduziertem Einbauraum vorgeschlagen, anstelle der gesonderten Pumpen eine mittels eines Zwischenläufers zweistufige Innenläufer-Zahnradpumpe zu verwenden. <IMAGE>
IPC 1-7
IPC 8 full level
F04C 2/10 (2006.01); F04C 11/00 (2006.01); F04C 14/26 (2006.01); F04C 15/06 (2006.01)
CPC (source: EP)
F04C 2/103 (2013.01); F04C 11/001 (2013.01); F04C 15/06 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0811765 A2 19971210; EP 0811765 A3 19980610; EP 0811765 B1 20020828; DE 19622688 A1 19971211; DE 59708039 D1 20021002
DOCDB simple family (application)
EP 97106781 A 19970424; DE 19622688 A 19960605; DE 59708039 T 19970424