US 2003/0111209 A1Published application

EGR cooler

AssigneeHino Motors, Ltd.

InventorsMakoto Tsujita, Keiichi Nakagome, Katsuji Inoue, Yoji Yamashita

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Abstract

An EGR cooler including a cylindrical shell having a cooling water inlet for introducing cooling water into the shell at one axial end, a cooling water outlet for discharging the cooling water from the shell at the other axial end, and a bypass outlet for pulling out part of the cooling water at a position diametrically opposed to the cooling water inlet, plates positioned at axial ends of the shell so as to close the axial ends of the shell, hoods positioned at sides of the plates away from the shell so as to enclose end faces of the plates, and tubes extending axially within the shell and having ends penetrating through the plates. The tubes passes exhaust gas from one of the hoods to the other hood for thermal exchange of the exhaust gas with the cooling water.

Claims2

Dependent claims

An EGR cooler comprising:

a cylindrical shell having a cooling water inlet for introducing cooling water into the cylindrical shell at one of axial ends thereof, a cooling water outlet for discharging the cooling water out of the cylindrical shell at the other axial end of the cylindrical shell, and a bypass outlet for pulling out part of the cooling water introduced via the cooling water inlet at a position diametrically opposed to the cooling water inlet at the one axial end of the cylindrical shell;
a plurality of plates positioned at axial ends of the cylindrical shell so as to close the axial ends of the cylindrical shell;
a plurality of hoods positioned at sides of the plates, respectively, away from the cylindrical shell so as to enclose end faces of the plates;
and
a plurality of tubes extending axially within the cylindrical shell and having ends penetrating through the plates, the tubes being configured to pass exhaust gas from one of the hoods to the other hood for thermal exchange of the exhaust gas with the cooling water.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/356,610Filed 3 Feb 2003
Priority: JP 11-1177620 Jan 1999
Published: 19 Jun 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F28D 7/1653
With conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features;…
F02M 26/32
Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials: liquid-cooled heat exchangers
F28F 1/405
The means being only inside the tubular element: and being formed of wires
F28F 1/42
Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses: the means…