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Directory:Exhaust Heat Exchanger

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Directory of methods of harnessing heat energy from exhaust to pre-heat incoming cold fluid or gas.

Contents

Products

  • Honda has received a patent on an exhaust heat exchanger that harnesses the heat energy from the exhaust through a thermal exchange, which can then be converted into electrical energy through a thermal electric process or to drive a turbine/generator.

Patents

US 7055315

Summary 
The present invention relates to a heat exchanger for carrying out heat exchange between a heat medium and an exhaust gas from a multicylinder internal combustion engine.
Abstract 
First heat exchangers (H4, H3, H2) are disposed within an exhaust port (18), within a pre-catalytic device (34), and on the downstream of a main catalytic device (35); the exhaust port (18), the pre-catalytic device (34), and the main catalytic device (35) being provided in each exhaust passage (33) of a multicylinder internal combustion engine. These first heat exchangers (H4, H3, H2) are independently provided for each of the exhaust passages (33), and a second heat exchanger (H1) is disposed in a section where these exhaust passages (33) are combined. Since the first heat exchangers (H4, H3, H2) are disposed on the upstream side of the exhaust passage (33), high heat exchange efficiency can be obtained by high temperature exhaust gas, and, moreover, the occurrence of exhaust interference can be avoided, thereby preventing any decrease in the output of the internal combustion engine.

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