Coolant circuit

Abstract

A coolant circuit, particularly a coolant circuit comprising a plurality of partial circuits 1, 2 and 3 of an internal combustion engine 11 having a main coolant circuit 1 and a heating circuit 2, and a coolant delivery pump 5 disposed at a rotating actuator 4, wherein the rotating actuator 4 comprises a rotary slide housing 20 having a plurality of connections 8a, 8b, 9a, 9b, 10a through which a coolant can flow, and a first and at least one second rotary slide 6 and 7 which is rotatably mounted in the rotary slide housing 20 and has at least one rotary slide flow opening 8, 9, 10 forming a flow path, and wherein the connections 8a, 8b, 9a, 9b, 10a can be brought into an at least partial overlap with the rotary slide openings 8, 9, 10 by a rotating movement of the respective rotary slide 6 and / or 7, wherein a first branch 1a of the main coolant circuit 1, which leads from the internal combustion engine 11 via a main cooler 12 to the main cooler connection 8b of the first rotary slide, can be controlled by the first rotary slide 6, and a second branch 1b of the main coolant circuit 1, which leads from an outlet 21 of the coolant delivery pump 5 to the internal combustion engine 11, can be controlled by the second rotary slide 7.

Description

technical field [0001] A coolant circuit of a motor vehicle engine with a plurality of subcircuits has devices for the operation of this coolant circuit, in particular for controlling the flow of coolant into the individual subcircuits. Background technique [0002] Coolant circuits of this type are preferably used for thermal management of the engine, wherein the coolant flow is distributed between the sub-circuits of the coolant circuit by means of operating the coolant circuit in such a way that the engine is regulated as quickly as possible optimized operating temperature. [0003] DE 602 09 019 T2 discloses a control valve for an engine cooling circuit through which coolant flows and has a first branch comprising the engine cooling system, a second branch forming a cooler branch line and a or a plurality of third branches each with at least one hot air generator for heating the passenger compartment. The control valve is configured as a base body having a fluid inlet,...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this type of engine cooling system is that the structure of the rotary valve imposes restrictions on the switchable circuits

The introduction of other loops will inevitably cause the control of individual loops to deteriorate

As a result, it is no longer possible to adjust the coolant temperature to the desired value with sufficient precision and speed, which makes it more difficult to reach the operating temperature of the engine

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