STROMBERG CDSE Type 1-Barrel: Description

The Stromberg CDSE type carburetor is a development of the constant depression carburetor, which operates on principle of varying effective areas of choke and jet orifice, in accordance with degree of throttle opening, engine speed and engine load. Fuel passes into float chamber, via a needle valve, where flow is controlled by needle valve and twin floats mounted on a common arm. Fuel in jet orifice is controlled, at same level as that in float chamber, by means of cross drillings in jet assembly. Clearance around piston in its vertical bore permits air to "leak" into mixing chamber and thus lower vacuum. A drilling is made in atmospherically vented region beneath diaphragm to meet a second drilling that breaks into mixing chamber downstream of piston. An adjusting screw with a conical tip is inserted into drilling, and is adjusted by manufacturer to bring each carburetor to a common "leak" status.