| 摘要 |
PURPOSE: A structure of a valve seat of an LPG engine is provided to achieve improved abrasion resistance and durability of valve seat by absorbing the impact applied from the valve during opening/shutting operation of the valve. CONSTITUTION: A seat coupling portion(11) for coupling with a ring-shaped seat(13) is formed at the edge of outlet or inlet side of an intake/exhaust port(10). The ring-shaped seat is coupled onto the seat coupling portion, and a leaf spring(16) is interposed between the seat coupling portion and the seat. The seat has a top surface with a top groove(14) and a side surface with a side groove(15). The first seal ring(17) is inserted into the top groove so as to seal the top surface of the seat, and the second seal ring(19) is inserted into the side groove in such a manner that the second seal ring is protruded outward, so as to seal the side surface of the seat.
|
