公开(公告)号：US08127735B2

公开(公告)日：2012-03-06

申请号：US12400373

申请日：2009-03-09

申请人： Edward P. Becker ,  David L Moore

发明人： Edward P. Becker ,  David L Moore

IPC分类号： F01L3/00 ,  B21K1/24

CPC分类号： F01L3/22 ,  F01L3/06 ,  F01L2103/00 ,  Y02T10/146 ,  Y10T29/49298 ,  Y10T29/493 ,  Y10T29/49306

摘要： An engine assembly may include an engine block defining a cylinder bore, a cylinder head fixed to the engine block, and a valve seat insert. The cylinder head may include an intake port, defining an inlet in fluid communication with an air source and an outlet in fluid communication with the cylinder bore. The valve seat may be defined at the outlet of the intake port and may include a stepped region. The stepped region may define a seating surface extending radially outward from the intake port. The seating surface may include a series of protrusions circumferentially spaced from one another around the outlet and forming a series of recesses therebetween. The valve seat insert may be located within the stepped region and may include a first axial end surface abutting the protrusions on the seating surface.

摘要翻译： 发动机组件可以包括限定气缸孔的发动机缸体，固定到发动机缸体的气缸盖和阀座插入件。 气缸盖可以包括进气口，其限定与空气源流体连通的入口和与气缸孔流体连通的出口。 阀座可以限定在进气口的出口处，并且可以包括阶梯区域。 台阶区域可以限定从进气口径向向外延伸的座面。 座位表面可以包括围绕出口周向间隔开的一系列突起，并在它们之间形成一系列凹槽。 阀座插入件可以位于阶梯区域内，并且可以包括抵靠在座表面上的突起的第一轴向端面。