EP 1963637 B1 20090603 - CONTROLLABLE COOLANT PUMP
Title (en)
CONTROLLABLE COOLANT PUMP
Title (de)
REGELBARE KÜHLMITTELPUMPE
Title (fr)
POMPE A REFRIGERANT REGLABLE
Publication
Application
Priority
- DE 2006001405 W 20060811
- DE 102005062200 A 20051223
Abstract (en)
[origin: US2008317609A1] The invention relates to a controllable coolant pump for internal combustion engines which is driven by torque transmission elements. It is an object of the invention to develop a driven, controllable coolant pump of this type for internal combustion engines, which ensures further functioning of the coolant pump (failsafe) if the control means fails, is distinguished by a high degree of efficiency and a very compact, simple, robust design, and, even in the case of operating medium which is loaded with dirt, ensures high operational safety and reliability and makes active control of the coolant delivery amount possible, in order firstly to ensure optimum warming up of the engine by "zero leakage" and in order secondly, after warming up of the engine, to influence the engine temperature during continuous operation so exactly that both the emission of pollutants and the friction losses and fuel consumption can be reduced considerably over the entire operating range of the engine. According to the invention, this object is achieved by a controllable coolant pump having a pump housing (1), a driven shaft (2) which is mounted in the pump housing (1), an impeller wheel (3) which is arranged fixedly in terms of rotation on a free, flow-side end of the shaft (2), and a pressure-activated valve slide (4) having-an outer cylinder (5) which covers the outflow region of the impeller wheel (3) in a variable manner, which controllable coolant pump is characterized in that the valve slide (4) is of annular configuration and is arranged on a plurality of piston rods (6) which are mounted displaceably in the pump housing (1), wherein an annular piston (12) which is mounted in an annular groove (10) in the pump housing (1) and can be moved in a defined manner in the annular groove (10) by means of excess pressure or vacuum is arranged on the piston rods (6) in a manner lying opposite the valve slide(4).
IPC 8 full level
F01P 7/16 (2006.01); F04D 13/02 (2006.01); F04D 15/02 (2006.01)
CPC (source: EP KR US)
F01P 7/16 (2013.01 - KR); F04D 13/02 (2013.01 - KR); F04D 15/0038 (2013.01 - EP US); F04D 15/02 (2013.01 - KR); F05D 2270/64 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2008317609 A1 20081225; US 8038419 B2 20111018; AT E433046 T1 20090615; BR PI0612567 A2 20101123; BR PI0612567 B1 20180626; CN 101351631 A 20090121; CN 101351631 B 20100616; DE 102005062200 B3 20070222; DE 112006003760 A5 20081120; DE 502006003911 D1 20090716; EP 1963637 A1 20080903; EP 1963637 B1 20090603; ES 2327780 T3 20091103; JP 2009520899 A 20090528; JP 5044569 B2 20121010; KR 101281679 B1 20130703; KR 20080075772 A 20080819; WO 2007071217 A1 20070628
DOCDB simple family (application)
US 88501006 A 20060811; AT 06761838 T 20060811; BR PI0612567 A 20060811; CN 200680048870 A 20060811; DE 102005062200 A 20051223; DE 112006003760 T 20060811; DE 2006001405 W 20060811; DE 502006003911 T 20060811; EP 06761838 A 20060811; ES 06761838 T 20060811; JP 2008546084 A 20060811; KR 20077022880 A 20060811