INTERNAL COMBUSTION ENGINE

• Main Authors: TAKEICHI KAYOKO, MIMURA MASAHIDE, SUGIO DAISUKE, KOBAYASHI TOMOKAZU, TAKAHASHI RYOTA, NAKANO YASUHIKO, OCHIAI SHUICHI
• Format: Patent
• Language: English; Japanese
• Published: 03.08.2015
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CRANKCASE VENTILATING; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To restrict influence against surrounding environment by releasing intentionally pressure from a prescribed location even if an internal pressure in the main body of an internal combustion engine is increased by the blow-by gas in the engine in which a breather chamber for use in separating gas and liquid from blow-by gas generated in the main body of the engine is formed inside a head cover connected to a cylinder head while a gasket is held between it and the cylinder head and one end of a hose for guiding blow-by gas to an air cleaner side is connected to an outlet pipe provided in the head cover so as to derive the blow-by gas from the breather chamber.SOLUTION: There is provided a releasing mechanism 43 at an outlet pipe 39 so as to release blow-by gas outside by removing a hose 41 from the outlet pipe 39 in response to a state in which a pressure of blow-by gas in the main body of an internal combustion engine becomes a prescribed pressure or more. 【課題】シリンダヘッドとの間にガスケットを挟持するようにしてシリンダヘッドに結合されるヘッドカバーの内側に、機関本体内で生じたブローバイガスの気液分離を行うためのブリーザ室が形成され、ブリーザ室からのブローバイガスを導出するようにしてヘッドカバーに設けられる出口管に、ブローバイガスをエアクリーナ側に導くホースの一端部が接続される内燃機関において、ブローバイガスによる機関本体の内圧が高くなってしまっても、意図的に所定部位から圧抜きを行うようにして周囲環境に及ぼす影響を小さく抑える。【解決手段】出口管３９に、機関本体内のブローバイガスの圧力が所定圧以上となるのに応じて出口管３９からホース４１を離脱させてブローバイガスを外部に逃がす逃がし機構４３が設けられる。【選択図】 図７