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Heat exchangers (H4, H3, H2, H1) disposed in an exhaust port (18) provided in the exhaust passage (33) of an internal combustion engine, in the pre-catalytic device (34) thereof, and on the downstream side of the main catalytic device (35) thereof, respectively, wherein the density of heat transfer...

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Bibliographische Detailangaben
Hauptverfasser:	SHINOHARA, MASASHI, KOMATSU, HARUHIKO, TAKAHASHI, TSUTOMU, IZUMI, HIDEHARU, NISHIMOTO, SEIJI
Format:	Patent
Sprache:	ger
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEAT EXCHANGE IN GENERAL HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS STEAM ENGINES TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Heat exchangers (H4, H3, H2, H1) disposed in an exhaust port (18) provided in the exhaust passage (33) of an internal combustion engine, in the pre-catalytic device (34) thereof, and on the downstream side of the main catalytic device (35) thereof, respectively, wherein the density of heat transfer surface (heat transfer surface/volume) of the heat exchanger (H4) on the upstream side of the exhaust passages (33) is minimum and that of the heat exchanger (H1) on the downstream side thereof is maximum among the densities of heat transfer surfaces of all heat exchangers, whereby, because the density of heat transfer surface is reduced on the upstream side of the exhaust gas passages (33) at the portions where the temperature of the exhaust gases is high, and the density of it is increased on the downstream side of the exhaust gas passages (33) at the portions where the temperature of the exhaust gases is low, a uniform heat transfer performance can be assured through the entire area of each of the heat exchangers (H4, H3, H2, H1).