Resources Contact Us Home
Engine assembly with valve seat vent passages and method of forming

Image Number 4 for United States Patent #8127735.

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.

  Recently Added Patents
Semiconductor device manufacture in which minimum wiring pitch of connecting portion wiring layer is less than minimum wiring pitch of any other wiring layer
Stacked type semiconductor memory device and chip selection circuit
Methods of forming semiconductor devices having diffusion regions of reduced width
Non-intrusive processor tracing
Memory elements with increased write margin and soft error upset immunity
Methods, systems, and products for providing communications services
Metal melting apparatus and method for melting metal
  Randomly Featured Patents
Coating compositions and method for improving the properties of coated substrates
Distributed processing system, method of distributed processing, terminals and storage media
Loop fastener
Thiazolylacetamido compounds
Interrupt balancing for multi-core and power
Iron-base sintered alloy for valve seat and its manufacture
Metal programmable integrated circuit capable of utilizing a plurality of clock sources and capable of eliminating clock skew
Yarn treatment jet
Points for a feeding system, especially a gravity roller table
Data storage media and methods utilizing a layer adjacent the storage layer