| 摘要 |
<p>An internal combustion engine comprises a sub-chamber that communicates with a combustion chamber, and a variable capacity device that changes the capacity of the sub-chamber. The variable capacity device is disposed on a cylinder head and comprises a communication unit formed in a cylindrical shape, a movement member that is formed in a cylindrical shape so as to fit into the communication unit, the end section on the side facing the combustion chamber being sealed, and a support unit having a projection that fits into the movement member. The variable capacity device is constituted so that the movement member partitions the space inside the communication unit, forming a sub-chamber and a gas chamber. The movement member is formed so that the end section on the side opposite from the side facing the combustion chamber is open, and so that gas-chamber gas leaking from the section where the movement member and the projection come into contact with each other is released outside the cylinder head.</p> |
