EGR cooler

Details EGR cooler EGR cooler

2006-07-25

2006-07-25

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C165S179000, C165S184000

Reexamination Certificate

active

07080634

ABSTRACT:
An EGR cooler has tubes and a shell for enclosing the tubes. Cooling water is supplied into and discharged from the shell and exhaust gas from a diesel engine is guided into each of the tubes so as to conduct heat exchange of the exhaust gas with the cooling water. An inner periphery of each of the tubes is formed with spiral protrusions each having an inclination angle in a range of 26°–50° to a plane perpendicular to an axis of the tube.

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