Three-pass heat exchanger for an EGR system
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United States of America Patent
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Apr 26, 2011
Grant Date -
Oct 22, 2009
app pub date -
Nov 22, 2006
filing date -
Nov 22, 2005
priority date (Note) -
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Abstract
The present invention relates to a three-pass heat exchanger for an EGR system, comprising a casing housing at least one cooling chamber for gas circulating through a plurality of pipes and heads on its ends coupled to the gas inlet pipe coming from the exhaust manifold and to the gas outlet pipe connected to the intake manifold of the engine, which is configured as a three-pass heat exchanger, i.e. with three differentiated areas for gas circulation from the inlet pipe to the outlet pipe, the inlet pipe and the outlet pipe being located at opposite ends of the exchanger. The exchanger can include a bypass valve and two cooling chambers at different temperatures.
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