# US 2018/0320694 A1 · Control arrangement for a mechanically controllable coolant pump of an internal combustion engine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0320694 A1 - Document ID: US20180320694A1 - Status: Published application - Kind: A1 - Application number: 15/772,815 - Filed: 2016-10-19 - Published: 2018-11-08 - Earliest claimed: 2015-11-06 - Assignees: Pierburg GmbH - Applicants: Pierburg GmbH - Inventors: STEPHAN ZIELBERG; MICHAEL-THOMAS BENRA; MICHAEL SANDERS; STEFAN ROTHGANG; ANDREAS BURGER; SVEN NIGRIN - Web page: https://patentgrep.com/patent/US20180320694A1 ## CPC - F04D 15/0038: {by varying the effective cross-sectional area of flow through the rotor} - F01P 5/10: Pumping liquid coolant; Arrangements of coolant pumps - F04D 13/12: Combinations of two or more pumps (combinations with priming pumps or booster pumps to counteract vapour-lock F04D9/04) - F01P 2005/105: {Using two or more pumps} - F05D 2270/64: Hydraulic actuators - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS ## Abstract A control arrangement for a coolant pump of an internal combustion engine includes a control slide which controls a throughflow cross-section of an annular gap arranged between an outlet of a coolant pump impeller and a surrounding delivery duct. A control pump adapts a hydraulic pressure generated in a flow duct. An electromagnetic valve includes a first and second valve seat, a first, second and third flow connection, a closing member and an armature. The first flow connection is fluidically connected to an outlet of the control pump. The second flow connection is fluidically connected to a first pressure chamber of the control slide. The third flow connection is fluidically connected to an inlet of the coolant pump. The first valve seat is arranged between the first flow connection and the second flow connection. The second valve seat is arranged between the second flow connection and the third flow connection. ## Claims ### Claim at position 1 1-10. (canceled) ### Claim 11 A control arrangement for a coolant pump configured to be mechanically controllable of an internal combustion engine, the control arrangement comprising: a control slide configured to be adjustable so as to control a throughflow cross-section of an annular gap which is arranged between an outlet of a coolant pump impeller and a surrounding delivery duct, the control slide comprising a first pressure chamber formed on a first axial side of the control slide; a control pump configured to adapt a hydraulic pressure which is generated in a flow duct, the control pump comprising an outlet; and an electromagnetic valve comprising a first valve seat, a second valve seat, a first flow connection, a second flow connection, a third flow connection, a closing member and an armature, the closing member being connected to the armature so that each are movable axially, wherein, the first flow connection is fluidically connected to the outlet of the control pump, the second flow connection is fluidically connected to the first pressure chamber of the control slide, the third flow connection is fluidically connected to an inlet of the coolant pump, the first valve seat is arranged between the first flow connection and the second flow connection, and the second valve seat is arranged between the second flow connection and the third flow connection. ### Claim 12 (depends on 11) The control arrangement as recited in claim 11, wherein, the electromagnetic valve further comprises a flow housing and an electromagnetic actuator which comprises a core, flow-conducting elements, a coil carrier, a winding arranged on the coil carrier, and the armature, and the closing member is configured to be movable in the flow housing between the first valve seat and the second valve seat. ### Claim 13 (depends on 12) The control arrangement as recited in claim 12, wherein, the coolant pump comprises a housing part which comprises an accommodation opening, and at least the flow housing of the electromagnetic valve is arranged in the accommodation opening. ### Claim 14 (depends on 13) The control arrangement as recited in claim 13, wherein, the housing part further comprises a first duct arranged, and the first pressure chamber is connected to the second flow connection via the first duct. ### Claim 15 (depends on 14) The control arrangement as recited in claim 14, wherein, the control pump further comprises a control pump housing, the housing part further comprises a second duct arranged therein, and the second duct is connected to the first flow connection of the electromagnetic valve and is arranged to continue in the control pump housing to the outlet of the control pump. ### Claim 16 (depends on 15) The control arrangement as recited in claim 15, wherein, the housing part further comprises a third duct arranged therein, and further comprising: a radially inner through-going opening arranged in the third duct, to continue inside the control pump housing, and to extend through the drive shaft of the coolant pump, wherein, the third duct is connected to the third flow connection of the electromagnetic valve and is arranged to extend into the radially inner through-going opening of the housing part, and the coolant pump impeller comprises at least one axial bore arranged therein, the at least one axial bore being arranged to extend to the inlet of the coolant pump. ### Claim 17 (depends on 15) The control arrangement as recited in claim 15, wherein, the control pump further comprises an inlet and a flow duct, and further comprising: a second pressure chamber; and a connecting duct arranged in the control pump housing in an area of the inlet of the control pump, the connecting duct being configured to fluidically connect the second pressure chamber to the flow duct of the control pump. ### Claim 18 (depends on 15) The control arrangement as recited in claim 15, further comprising: a valve rod, wherein, the closing member comprises a first closing surface arranged at a first axial end and a second closing surface arranged at a second axial end, the closing member of the electromagnetic valve is fastened to the valve rod, the closing surface at the first axial end of the closing member is associated with the first valve seat, and the second closing surface at the second axial end is associated with the second valve seat. ### Claim 19 (depends on 11) The control arrangement as recited in claim 11, wherein the electromagnetic valve is a proportional valve. ### Claim 20 (depends on 11) The control arrangement as recited in claim 11, wherein the electromagnetic valve is configured to be driven in a variably clocked manner.