Patent GB-405800-A (GB)
Title: Improvements in vaporizers for internal combustion engines
IPC: F02M21/10
Filed: 1933-02-09
Abstract: 405,800. Carburetters and vaporizers. SOC. DES CARBURATEURS OILGAZ, 45, Rue de Colombes, Courbevoie, Seine, France. Feb. 9, 1933, No. 4034. Convention date, Feb. 9, 1932. [Class 7 (iii).] The exhaust gases pass through tubes 58 of oblong section arranged in staggered formation with their longer sides perpendicular to the direction of the flow of the mixture to compel the heavy fuel combustible mixture to follow a sinuous course. Each row of tubes is mounted in a frame 65 and the frames are bolted together with the interposition of copper &c. sheets 66, the whole forming a removable unit. A valve controlled bypass 70 may determine the amount of heat supplied to the tubes. The Specification as open to inspection under Sect. 91 describes also a carburetter of which Figs. 6 (Cancelled) and 8 (Cancelled) show respectively vertical and horizontal sections. Float chambers 1, 2 for light and heavy fuel each contain a float excessive rise or fall of which is prevented by spring blades 3a. Passages 21, 22, Fig. 11 (Cancelled), lead from the chambers 1, 2 to a conical recess, for a control plug 19, disposed in the body portion 3 of the carburetter in which the float chambers are formed and a main or power nozzle 5 is provided. Passages 25, 26 connect the opposite side of the recess to the main nozzle 5. A diametrical passage 27 near one end of the control plug is adapted to connect the passages 21, 25 and supply light fuel to the main nozzle 5, a radial passage 28 leading from the passage 27 simultaneously supplying a passage 23 leading to an idling nozzle 6, Fig. 6 (Cancelled). A quarter turn of the plug, cuts off the passage 21 from the passage 25 and brings a port 33, leading to the hollow interior 29 of the plug, into line with the heavy fuel passage 22. Simultaneously, another port 31 makes connection between the interior 29 and the passage 26 to the main nozzle and a port 32 opens the way to a heavy fuel idling nozzle 7. The next quarter turn cuts off both fuel supplies and a final one registers a port 34 with the passage 22, a port 30 with the passage 26 and the passages 28, 27 connect the passage 21 to the nozzle 6, the arrangement providing for the supply of heavy fuel to main nozzle and light fuel to the idling nozzle 6. The nozzles 6, 7 operate in a by-pass 8, parallel to a choke tube 4 containing the main nozzle 5, the effective cross section of which is adjusted by a screw 14, and an air bypass 15 is controlled similarly by a screw 18. In another form, the light and heavy fuel nozzles, 5p, 5q, Fig. 23, (Cancelled) are disposed in separate tubes 11p, 11q controlled by valves 104 mounted in a common plane on a common spindle 105 and similar valves govern the air inlets. A common rotary plug 106 having passages 107, 108 at right angles to one another, determine the supply of light or heavy fuel or both, and a pair of valves 110, 111 in the plug move therewith but may be independently rotated therein. Pilot nozzles 6, 7 are controlled by a conical plug 118 having passages adapted to register alternatively with by-passes 114, 115. This subject-matter does not appear in the Specification as accepted.