GB191078A - A process and device for the automatic checking or restraining of petrol or other fuel, in carburetters - Google Patents

Abstract

191,078. Lamoureux, G. Dec. 29, 1921, [Convention date.]. Void [Published under Sect. 91 of the Act]. Spray carburettors.-The fuel supply is controlled and the fuel atomized by admitting a current of air to the nozzle chamber which is fed through a submerged restricted orifice. Fuel is supplied to the nozzle M through a restricted orifice G and chamber L, air being admitted to the chamber through an inlet Y<1>; part of the air passes through an orifice N immediately below the nozzle M, and part passes through orifices E and is constrained by a baffle L<1> to pass down to the bottom of the chamber and then up over the orifice G as indicated by the arrows S. The nozzle M is controlled by a needle valve D, and the main air supply enters at U. A slow-running nozzle R opens into the induction pipe on the engine side of the throttle A and is supplied from a cup B<1> fed through an orifice B from the chamber L. At starting, the fuel stands at the level X - - X, but during running the chamber L empties and the fuel falls to the level Y - - Y. The construction is particularly applicable to a Holley carburettor, in which case the usual nozzle device is replaced by one as shown in Fig. 2, an orifice f<1>, Fig. 5, is formed in the bottom of the plug g<1> to which the float chamber is attached, and the nut securing the float chamber is replaced by a cap e<1>. The air reaches the bottom of the nozzle chamber through the duct Y<2> existing in Holley carburettors.