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US 2006/0130818 A1Published application
Egr cooler
AssigneeT. Rad Co., Ltd.
InventorsTakazi Igami, Toshimichi Kobayashi, jyohei Yamamoto, Hiroshi Saitoh
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Abstract
The present invention provides an EGR cooler that is easy to manufacture and can accelerate heat exchange. Round in section tubes are plastically deformed in one plane crossing centerlines thereof such that corrugated exhaust gas flow paths are formed inside the tubes.
Claims8
An EGR cooler comprising a multiplicity of round in section tubes which are juxtaposed spaced apart from each other, with both ends of the tubes leading to a pair of headers, with exhaust gases to be cooled circulating within the tubes, and with a cooling fluid circulating around outer surfaces of the tubes,
- wherein the round in section tubes are plastically deformed in one plane crossing centerlines of the tubes such that corrugated exhaust gas flow paths are formed inside the tubes.
Dependencies are inferred from the claim text.