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Method for starting coolant fluid circuit comprising liquid pump

A coolant, circuit technology, used in fluid circulation arrangements, heating/cooling equipment, refrigerators, etc., can solve problems such as frequent maintenance, pump wear, etc., to simplify design and integration, eliminate the risk of wear and damage, pressure drop reduced effect

Inactive Publication Date: 2020-08-14
VALEO SYST THERMIQUES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coolant, which includes an excess of gas, causes cavitation as it circulates through the pump, which causes premature pump wear
This premature wear leads to failure and thus requires more frequent maintenance

Method used

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  • Method for starting coolant fluid circuit comprising liquid pump
  • Method for starting coolant fluid circuit comprising liquid pump
  • Method for starting coolant fluid circuit comprising liquid pump

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0052] At the outset, it should be noted that the accompanying drawings disclose the invention in detail for carrying out the invention. Of course, the drawings can be used to better define the invention if necessary.

[0053] In the remainder of the description, the terms upstream and downstream are used to describe the arrangement of components with respect to the flow direction of the fluid under consideration. Similarly, the arrangement of the constituent elements of a fluid circuit is provided with respect to the direction of flow of the fluid in the circuit.

[0054] An element described hereinafter as being located between two other elements does not mean that the element is physically located between the other two elements, but that the fluid passes first through one of the two elements and then through the element under consideration .

[0055] Throughout this specification, some elements or parameters may be referenced, such as a first element or a second element a...

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PUM

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Abstract

A method for starting a coolant circuit (100, 200, 300), comprises at least a first sub-circuit (120, 220, 320) in which there are arranged at least one compressor (122, 222, 322), a first heat exchanger (124, 224, 324) and a first expansion member (126, 226, 326), a second sub-circuit (140, 240, 340) in which there are arranged at least one second expansion member (142, 242, 342), a second heat exchanger (144, 244, 344) associated with a drivetrain of the vehicle and a pump (146, 246, 346), a third heat exchanger (162, 262, 362) common to the first sub-circuit (120, 220, 320) and to the second sub-circuit (140, 240, 340). The start-up method comprises at least one initial step of stopping the pump (146, 246, 346) and the compressor (122, 222, 322), and a step of starting the compressor (122, 222, 322) for a duration of less than 2 minutes. The method is applied to motor vehicles.

Description

technical field [0001] The field of the invention is that of coolant circuits for cooling devices of the engine or drive train of a vehicle with at least partially electric propulsion. Background technique [0002] Motor vehicles are often equipped with thermodynamic systems for cooling their engines and changing the air conditions inside them. The thermodynamic system operates through two circuits, in one of which the coolant circulates and in the other a heat transfer liquid. Each circuit includes one or more heat exchangers for transferring heat between the induction air and the fluid circulating within the circuit. The coolant circuit allows the temperature of the air inside to be changed, while the purpose of the heat transfer liquid circuit is to cool down the engine. These circuits are independent or connected together through a common heat exchanger. Most elements of the thermodynamic system are installed in the engine compartment of the vehicle. [0003] Regardl...

Claims

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Application Information

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IPC IPC(8): F25B6/04F25B5/04F25B49/02F25B41/04B60H1/00
CPCB60H1/00885F25B5/04F25B6/04F25B49/02F25B49/022F25B2500/26F25B2600/01F25B2600/02F25B2600/11F25B2600/13B60H1/00278B60H1/004B60H1/322B60H2001/00307B60H2001/3272F25B41/385F25B41/20
Inventor R.阿奇奇R.哈勒S.卡尔M.雅西亚
Owner VALEO SYST THERMIQUES
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