Patent ID: 6095436
Filing Date: 2000-08-01
Classification: B05B,F23D

Abstract:
A nozzle of an engine for atomizing liquid fuels prior to combustion, said nozzle comprising:a cylindrical hollow tube forming a venturi having inlet and outlet ends;a cylindrical hollow barrel; anda fuel catheter having a guide tube;said fuel catheter having a pressure drop induced in said catheter by means of viscous drag which drop can be adjusted by varying the length and diameter of said catheter;said venturi having a retainer head and a vena contracta at its inlet end, said vena contracts being formed by an inwardly extending annular ridge at said inlet end of said venturi, said retainer head extendable into and longitudinally of said venturi approximately one third the total length of said venturi,said barrel being approximately equal in length to that of said venturi and having a first internal diameter greater than the lateral dimension of said retainer head and a second internal diameter smaller than said first internal diameter, said first diameter extending from the inlet end of said barrel a distance approximately equal to the longitudinal dimension of said retainer head, said second internal dimension extending the remainder of the distance into said exhaust end of said barrel, a support shoulder being formed at the junction of said first and second diameters, and said barrel being flared inwardly a short distance at its exhaust end;said venturi being insertable into the inlet end of said barrel until said retainer head of said venturi rest against the shoulder formed by the function between said first and said second internal diameters of said barrel,whereby when said venturi is installed inside said barrel two air paths are formed with the first air path extending from said inlet end of said venturi through the hollow interior of said venturi and said second air path extending from said inlet end to said exhaust end and through the spaces between said retainer head of said venturi and the inside cylindrical surface of said barrel, and through the space between the outside circumference of the remainder of said venturi and the inside diameter of the remainder of said barrel and exiting through the opening between the outer circumference of said venturi and the inside circumference of said inwardly flared end of said barrel; andsaid fuel catheter and guide tube extending laterally through aligned bores in said barrel and in said retainer head of said venturi, positioned and directed so that when said fuel catheter is inserted into said guide tube it enters said venturi tangentially to the inner cylindrical surface of said venturi;whereby when air is supplied at an appropriate pressure at the inlet end of said nozzle and when liquid fuel is supplied to said fuel catheter, said air passes at high velocity through said first and said second air paths, the air that flows through said first air path forming a recirculation torus as it passes through said vena contracta of said venturi.