Heat exchanger with variable turbulence generators

Details Heat exchanger with variable turbulence generators Heat exchanger with variable turbulence generators

2011-04-19

2011-04-19

Wolfe, Jr., Willis R (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C165S174000

Reexamination Certificate

active

07926471

ABSTRACT:
An exhaust gas recirculation cooler may include a housing and a first wall. The housing may include an exhaust gas region, a coolant region, an exhaust gas inlet, and an exhaust gas outlet. The first wall may be fixed within the housing and may separate the exhaust gas region from the coolant region. The first wall may include a first region facing the exhaust gas region and a first tab having a fixed end coupled to the first region and a free end generally opposite the fixed end. The free end may be displaceable between first and second positions based on an operating temperature of the exhaust gas. The free end may be displaced in a direction generally perpendicular to the first region when in the second position.

REFERENCES:
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patent: 7478630 (2009-01-01), Maucher et al.
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patent: 7797937 (2010-09-01), Endicott et al.
patent: 2006/0174611 (2006-08-01), Dilley et al.
patent: 2009/0056682 (2009-03-01), Okawa et al.
patent: 2009/0313972 (2009-12-01), Freese, V

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