A vessel propulsion apparatus includes an exhaust passage guiding an exhaust, discharged from combustion chambers into an exhaust collecting passage, to a catalyst housed in a catalyst housing passage, and a cooling water passage guiding cooling water. The cooling water passage includes an upstream water passage, guiding the cooling water taken into the interior of the vessel propulsion apparatus by a water pump, and a first and second parallel water passage connected in series to the upstream water passage and connected in parallel to each other. The cooling water passage supplies the cooling water from the upstream water passage to each of the first and second parallel water passages to cool the catalyst housing passage by the first parallel water passage disposed along the catalyst housing passage and cool the exhaust collecting passage by the second parallel water passage disposed along the exhaust collecting passage.
Vessel propulsion apparatus and vessel
2016-02-16
Patent
Electronic Resource
English
IPC: | F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen |
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