ENGINE

• Main Authors: SATO HIRONAO, YAMAMOTO KYOHEI
• Format: Patent
• Language: English; Japanese
• Published: 26.06.2023
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

To efficiently take a measure against noise of an engine.SOLUTION: An engine includes: a first piston that is accommodated in a first cylinder bore formed in a first cylinder bank and to which a first piston pin is attached; and a second piston that is accommodated in a second cylinder bore formed in a second cylinder bank and to which a second piston pin is attached. A central axis of the first piston pin is separated from a central axis of the first piston to a thrust side. Offset amount between the central axis of the first piston and the central axis of the first piston pin is larger than that between a central axis of the second piston and the central axis of the second piston pin.SELECTED DRAWING: Figure 5 【課題】エンジンの騒音対策を効率的に実施する。【解決手段】第１シリンダバンクに形成される第１シリンダボアに収容され、第１ピストンピンが組み付けられる第１ピストンと、前記第２シリンダバンクに形成される第２シリンダボアに収容され、第２ピストンピンが組み付けられる第２ピストンと、を有する。前記第１ピストンピンの中心線は、前記第１ピストンの中心線からスラスト側に離れている。前記第１ピストンの中心線と前記第１ピストンピンの中心線とのオフセット量は、前記第２ピストンの中心線と前記第２ピストンピンの中心線とのオフセット量よりも大きい。【選択図】図５