Aspin valve

Last updated

An Aspin valve consists of a cone-shaped metal part fitted to the cylinder head in an internal combustion engine. Aspin valves were first patented by Frank Metcalf Aspin in 1939, [1] although the idea was devised before this time.[ citation needed ]

The valve rotates to provide the opening and closing necessary for intake and exhaust. It is attached to the engine, vertical to the cylinder block, via a shaft at its top; this allows the valve to rotate horizontally above the cylinder and when it turns. The valve is hollow, and has a large cut-out opening in one side. This alternately allows gases into the combustion chamber, and out to the exhaust system by lining up holes in the valve shaft with the cylinder-head ports which allows the gases to pass. [2]

References

  1. ↑ US2245743A,Metcalf, Aspin Frank,"Rotary valve",issued 1941-06-17
  2. ↑ "Spin Doctors: The Rotary Valve Cylinder Head". Old Bike Australasia. 2019-07-05. Retrieved 2020-06-21.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.