Supplied by both main jet and slow running jet. When the throttle is opened slightly, some air will flow through venturi. It affects the air intake in B and thus, the quality of mixture is controlled. A knob is provided for idle adjustment which controls the opening of B. For idling and slow speed running, a throttle valve is closed and the air enters through holes A and B which mixes with the fuel in idling passage and then the mixture passes to the idling jet. The annular space between main jet and outer cover forms the delivery tube for compensating jet.
An outer cover is provided for the main jet. It consists of three jets namely, main jet, compensating jet and idling jet. It is an old type of Zenith carburetor but in modem Zenith carburetors, economy devices as well as accelerating pumps are also provided. Zenith carburetors ,Zenith Carburetor Ientification and Codes Carb Identification for Zenith Carburetors Zenith Z1-28 33 68 69 161 267 1 Since it was founded in 1911, Zenith Carburetor Company of Detroit, Michigan has been synonymous with. A standard model of a Zenith carburetor is shown in Figure 2.23. It is most popular due to its easy starting, slow running, better economy as well as simple to adjust and requiring noĪdjustment once set. Instead of employing two side by side jets in other types, a compound jet consists of an inner main jet and a concentric outer jet is used in this carburetor. Similarly, an extremely rich mixture having a ratio of 9:1 is required during cold starting. For idling, a richer mixture of about 14:I is needed. A leaner mixture of air-fuel ratio of 16:1 is sufficient while running on levelled roads. Relatively rich mixture of air fuel ratio of 12:1 is required by the engine while accelerating or running at high speeds. The carburetor is supposed to supply the fuel air mixture in correct proportion under different conditions of temperature, speed and load on engine.
Vaporization is a change of state of the fuel from liquid to vapour whereas atomization is a mechanical breaking-up of the liquid into small particles so that every minute particle of the fuel is surrounded by the air. The term vapourization and atomization should be understood clearly. The process of breaking up and mixing the fuel with the air is called carburetion. What is Zenith Carburetor – Diagram and Working Introduction To Carburetor :Ĭarburetor is a device used for atomizing and vapourizing the fuel and mixing it with the air in varying proportions to suit for changing the operating conditions of engines. What is Zenith Carburetor – Diagram and Working.
0 kommentar(er)
