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Heat exchanger

A technology of heat exchangers and exchangers, applied in the direction of heat exchange equipment, heat exchangers, heat exchanger types, etc., can solve problems such as process and material limitations, increased cooling liquid, and increased specific power of heat exchangers

Active Publication Date: 2008-12-31
BEHR GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the specific power of the heat exchanger increases, so does the risk of the coolant boiling, which significantly reduces power and service life
[0005] Finally, due to the presence of strongly corrosive media, such as condensed water from the exhaust gas in the exhaust gas heat exchanger, the processes and materials used are severely restricted, which leads to greater big problem

Method used

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Embodiment Construction

[0021] The exhaust gas heat exchanger 1 has a two-part housing 2 and a plurality of tubes 3 arranged in the housing 2 . Between the tubes 3 and between the housing 2 and the tubes 3 there are finned plates 4 as structural elements, where the finned plates 4 have a saw-toothed structure according to the above-described embodiment, as shown in FIG. 3 , and will This will be described in detail later. Here, the tube 3 is a flat tube.

[0022] Exhaust gas from the engine to be cooled (gaseous first medium) flows in the pipe 3 , and in FIG. 2 the direction of flow is indicated by two arrows drawn in solid lines. The tube 3 is arranged in the housing 2 and consists of a U-shaped first housing part 2' and a housing cover 2", wherein the cover is placed on the first housing part 2' from above .In order to allow the coolant (liquid second medium) to flow in and out, two coolant connections 5 are provided in the housing cover 2 ", while in Fig. 2 the flow direction of the coolant in t...

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Abstract

The exhaust gas heat exchanger (1) for a road vehicle internal combustion engine has a square- or rectangular-section housing (2). It is made of a U-section (2') with a shallow inverted U- section lid (2''). The interior contains an array of flattened rectangular-section tubes (3) with fins (4) made of corrugated metal sheet between them. Cooling fluid may flow past the fins to cool hot exhaust gas before entering silencers and catalysers. The exhaust gas may flow straight through and the cooling fluid may flow through side connections (5).

Description

technical field [0001] The invention relates to a heat exchanger for automobiles. Background technique [0002] Today's engines are increasingly required to reduce emissions and fuel consumption. To meet these demands, measures such as increased boosting and more precise influence of combustion conditions are required. For automotive heat exchangers, this creates higher operating conditions, such as increased gas and coolant pressure, temperature and flow. At the same time, the requirements for specific power (Leistungsdichten) and service life are increasing. Therefore, it is necessary to adopt a new cooling concept locally. Thus, in the charge air cooler, the traditionally used air / air cooler is at least partly replaced by an air / liquid cooler in order to achieve the power and specific power required by the high supercharging of the engine. In exhaust gas heat exchangers, the exhaust gas recirculation rate is constantly increasing under increasing operating conditions s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/16F28F1/04F28F1/12F28F1/14F28F27/02
CPCF28D7/1653F28D21/0003F28F1/126F28F1/14F28F9/026F28F9/0268F28F2215/04
Inventor 彼得·格斯克斯丹尼尔·亨德里克斯赖纳·卢茨乌尔里希·毛赫尔延斯·里希特马丁·申德勒米夏埃尔·施密特
Owner BEHR GMBH & CO KG
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