To enhance an oil separation effect by using a simple structure.SOLUTION: A breather chamber structure 41 comprises: partition walls 51-53 for partitioning a breather space 42 surrounded by an outer wall into a chamber A, a chamber B, and a chamber C; an inlet 55 for allowing gas in an engine to flow into the chamber A; a first communication passage 56 for allowing communication between the chamber A and the chamber B; a second communication passage 57 for allowing communication between the chamber B and the chamber C; an outlet 58 for allowing the gas in the chamber C to the outside of the breather space 42; and an oil discharge port 60 for returning oil separated from the gas in the breather space 42 to an oil storage part of the engine. The chamber C has a capacity equal to or larger than half of the capacity of the breather space 42, and the chamber A has a capacity smaller than the capacity of the chamber C and larger than a capacity of the chamber B.SELECTED DRAWING: Figure 4
【課題】簡単な構造により、オイル分離効果を高める。【解決手段】ブリーザ室構造41は、外壁に囲まれたブリーザ空間42を室A、室Bおよび室Cに仕切る仕切壁51〜53と、エンジン内のガスを室A内に流入させる入口55と、室A内と室B内との間を連通させる第1の連通路56と、室B内と室C内との間を連通させる第2の連通路57と、室C内のガスをブリーザ空間42外へ流出させる出口58と、ブリーザ空間42内においてガスから分離されたオイルをエンジンのオイル貯留部に戻すためのオイル排出口60とを備え、室Cはブリーザ空間42の容積の半分以上の容積を有し、室Aは、室Cの容積よりも小さく、かつ室Bの容積よりも大きい容積を有している。【選択図】図4
BREATHER CHAMBER STRUCTURE AND ENGINE
ブリーザ室構造およびエンジン
2020-07-09
Patent
Electronic Resource
Japanese
IPC: | F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES , Zylinder, Kolben oder Gehäuse für Brennkraftmaschinen |
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