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Method and system for a dual loop coolant system

A coolant, circuit technology, used in coolant flow control, liquid cooling, engine cooling, etc., to solve problems such as operational failures or system failures that are not robust, complex and expensive

Active Publication Date: 2016-05-25
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is not robust against operational failures or system failures where the coolant from the two circuits can mix
Additionally, these systems are complex and expensive

Method used

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  • Method and system for a dual loop coolant system
  • Method and system for a dual loop coolant system
  • Method and system for a dual loop coolant system

Examples

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Embodiment Construction

[0009] The following description generally relates to systems and methods for controlling transmission oil temperature using a dual circuit coolant flow system. Increased transmission oil temperature control can be accomplished by providing two separate transmission oil heat exchangers, one in the high temperature coolant circuit and the other in a separate low temperature coolant circuit middle. figure 1 A vehicle system including an engine and a transmission is shown. like figure 2 As shown in , the engine transmission system can allow oil to flow from the engine transmission through the first heat exchanger, through the bypass valve, into the second heat exchanger, and back to the engine transmission. image 3 A method for transmission oil temperature control is shown in .

[0010] figure 1 is a block diagram of the vehicle driveline 20 . Driveline 20 may be powered by engine 22 . In one example, engine 22 may be a gasoline engine. In alternative embodiments, other ...

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Abstract

Methods and systems are provided for a dual loop coolant system used to control an engine transmission oil temperature. In one example, a high temperature coolant loop comprises a first heat exchanger and a control valve positioned upstream of the first heat exchanger whose coolant flow is separate from a second, low temperature coolant loop containing a second heat exchanger. An engine fluid circuit fluidically coupling the first heat exchanger, second heat exchanger, and an engine system component via a bypass valve positioned between the first heat exchanger and the second heat exchanger.

Description

technical field [0001] The present description generally relates to methods and systems for dual circuit coolant systems. Background technique [0002] The coolant system provides a mechanism for heat transfer between engine components and a heat transfer fluid. Historically, coolant systems have been used to reduce the temperature of the engine block, however the systems have evolved over time and there is a need to control the temperature of engine components beyond cooling. For example, it may be advantageous to heat the engine and / or other engine components during engine startup, but cool the engine and components during high load conditions. Additionally, the engine may have different heating and / or cooling needs than other engine components. [0003] To meet this need, dual circuit coolant systems have been introduced and typically include a high temperature coolant circuit and a low temperature coolant circuit to manage the temperature of the system components. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P3/20F01P7/14F16H57/04
CPCF01P3/20F01P7/165F01P2060/045
Inventor R·戈帕尔
Owner FORD GLOBAL TECH LLC