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Methods and systems for an exhaust gas recirculation cooler

A technology of recirculation system and exhaust system, used in exhaust gas recirculation, coolant flow control, liquid cooling, etc., to achieve the effect of low exhaust mass flow and low turbine pressure ratio

Inactive Publication Date: 2017-10-27
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] A disadvantage of the previous examples of EGR coolers is that, by virtue of the principles involved, the exhaust gas energy (eg heat removed from the exhaust gas in the cooler by means of the coolant) is only available and usable if the exhaust gas is recirculated

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  • Methods and systems for an exhaust gas recirculation cooler
  • Methods and systems for an exhaust gas recirculation cooler
  • Methods and systems for an exhaust gas recirculation cooler

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Embodiment Construction

[0104] The following description relates to systems and methods for an EGR cooler having a first cooling jacket fluidly separated from a second cooling jacket. The second cooling jacket is smaller than the first cooling jacket and is located at the interface between the EGR cooler and the outlet of the particulate filter. this is in figure 1 shown in . The first cooling jacket is configured to cool exhaust gases and is fluidly coupled to a first coolant system configured to regulate engine combustion and engine oil temperature as known in the art. The secondary cooling jacket may be used in a variety of situations including, but not limited to, mitigating condensate formation, increasing engine oil and / or engine combustion temperatures, and reducing primary cooling jacket temperature, as in Figure 4-7 shown in . exist figure 2 An engine having at least one combustion chamber coupled to an exhaust passage with the EGR cooler described above is shown in . exist image 3 ...

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Abstract

Methods and systems are provided for an EGR cooler having first and second coolant jackets fluidly coupled to first and second coolant systems, respectively. In one example, the first and second coolant jackets are hermetically sealed from one another. Furthermore, the second coolant jacket protrudes into a portion of an exhaust gas passage directly downstream of an exhaust aftertreatment device.

Description

technical field [0001] The present invention generally relates to exhaust gas recirculation coolers having two or more cooling jackets. Background technique [0002] Internal combustion engines are more and more frequently fitted with forced induction systems, where forced induction is primarily a method for enhancing power, in which the charge air required for the combustion process in the engine is compressed, thus allowing greater A mass of charge air is supplied to each cylinder in each operating cycle. As a result, the fuel mass and thus the average pressure can be increased. [0003] Forced induction is a suitable means of increasing the power of an internal combustion engine while keeping the displacement the same or reducing the displacement for the same power. In either case, forced induction results in an increase in power per unit volume and in a more favorable power-to-weight ratio. If the displacement is reduced, it is possible, under the same vehicle boundar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/23F02M26/28F02M26/25F02M26/06F02B29/04F01N5/02
CPCF01N5/02F02B29/0406F01P3/20F01P7/165F02M26/06F02M26/24F02M26/28F02M26/29F02M26/33F02M26/35F01N3/043
Inventor A·库斯克H·G·奎科斯F·A·萨默霍夫J·克默林V·斯米利亚诺夫斯基H·M·金德尔H·弗里德里希斯
Owner FORD GLOBAL TECH LLC