Patent ID: 7694656
Filing Date: 2010-04-13
Classification: F01L,Y10T

Abstract:
1. A cylinder head for an axial flow rotary valve engine, said head comprising a bore having an axis and adapted to house an axial flow rotary valve, a window in said bore through which at least one port in said valve periodically communicates with a combustion chamber as said valve rotates, at least two axially extending slots in said bore, adjacent opposite sides of said window, each of said slots being adapted to locate a floating elongate gas sealing element, and at least one spark plug hole adjacent to said bore and adapted for mounting a spark plug associated with said valve, characterised in that said head further comprises at least one elongate axially extending cooling passage disposed between said bore and said spark plug hole, adjacent to one of said slots, said passage having a substantially constant cross section and extending axially at least over the length of said slots.