To provide a ship propulsion machine which can reduce noise and is reducible in a size and changeable in a layout.SOLUTION: An outboard engine 100 of the present embodiment comprises an engine main body 122 and an intake device 200 for supplying air to the engine main body 122. The intake device 200 comprises: a main intake pipe 240 which has a first intake pipe 220A and a second intake pipe 230 connected to a downstream-side end of the first intake pipe 220A and extending with an angle formed with respect to an axial line Ai direction of the first intake pipe 220A and which makes air supplied to the engine main body 122 circulate therein; and an extension pipe 220B extending from a connecting position between the first intake pipe 220A and the second intake pipe 230 and having a resonance chamber R1 therein. The extension pipe 220B comprises an extension peripheral wall 221B and an end wall 222 for separating an entire portion except for a region adjoining the main intake pipe 240 in the resonance chamber R1 from an external space.SELECTED DRAWING: Figure 6

    【課題】騒音を低減でき、小型化および設計変更が容易な船舶推進機を提供する。【解決手段】本実施形態の船外機100は、エンジン本体122と、エンジン本体122に空気を供給する吸気装置200と、を備え、吸気装置200が、第1の吸気管220Aと、第1の吸気管220Aの下流端に接続され、第1の吸気管220Aの軸線Ai方向に対して角度をなして延びる第2の吸気管230と、を備えてエンジン本体122に供給される空気が流通するメイン吸気管240と、第1の吸気管220Aと第2の吸気管230との接続位置から延び、内部に共鳴室R1を備える延長管220Bと、を備え、延長管220Bが、共鳴室R1においてメイン吸気管240と隣接する部位を除く全体を外部空間から隔てる延長周壁221Bおよび端壁222を備えている。【選択図】図6


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    Title :

    SHIP PROPULSION MACHINE


    Additional title:

    船舶推進機


    Contributors:

    Publication date :

    2024-05-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / 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



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