SELF-IGNITION TYPE INTERNAL COMBUSTION ENGINE AND PISTON

• Main Authors: AOKI SEIHEI, SAKURAI TORU, OKAMOTO YOSHITOMO, OZAWA DAISUKE, YAMASHITA HITOSHI, YAMANOUCHI DAISUKE, IKENO RYO
• Format: Patent
• Language: English; Japanese
• Published: 09.05.2019
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

To provide a self-ignition type internal combustion engine capable of enhancing utilization efficiency of air in a squish area.SOLUTION: A self-ignition type internal combustion engine of this invention includes a combustion chamber N which is defined and formed between a cavity 11 on a top surface of a piston 10 and a cylinder head 20. The combustion chamber N includes a lip 12 which is formed in an opening end of the cavity 11 and protrudes from an inner peripheral side surface of the cavity 11 toward a central area, and a reverse squish flow peeling portion 13 which is formed in an outer peripheral area of the lip 12 so as to peel a reverse squish flow directed from an inside of the cavity 11 to an outer peripheral area of the cavity 11.SELECTED DRAWING: Figure 3 【課題】スキッシュ領域の空気の利用効率を高めることを可能とする自己着火式の内燃機関を提供すること。【解決手段】ピストン１０の頂面のキャビティ部１１とシリンダヘッド部２０との間に区画形成される燃焼室Ｎを備えた自己着火式の内燃機関であって、前記燃焼室Ｎは、前記キャビティ部１１の開口縁部に形成され、前記キャビティ部１１の内周側面から中心領域に向かって張り出すリップ部１２と、前記リップ部１２の外周領域に形成され、前記キャビティ部１１内から当該キャビティ部１１の外周領域に向かう逆スキッシュ流を剥離する逆スキッシュ流剥離部１３と、を有する。【選択図】図３