fig1 l is a section view of the variable geometry nozzle 150 described in fig1 i referring generally to fig1 a 11d fig1 a 11d are detailed section views of an example of the variable geometry nozzle 150 where the movable element 400 is having at least one spherical surface and is biased by a resilient element 405 in connection between the movable element 400 and the body 200 the movable element 400 is placed such that it interact with the inner flow passage 152 when in different positions causing the downstream passage 800 to have different geometry fig1 a and fig1 b are showing the movable element 400 in two different positions with the downstream passage 800 in fig1 b is of more restricted geometry when compared to the downstream passage 800 of fig1 a fig1 c and fig1 d are similar to fig1 a and fig1 b except that the downstream passage 800 of fig1 c and 11d are of larger area caused by the placement of flow enlargement conduit 845 permanently in communication between the inner flow passage 152 and the orifice 425 referring generally to fig1 a 12c fig1 a 12c are detailed section views of an example of the.