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The main metering device
Importantly, the metering device provides a smooth the depletion of the combustible mixture during the transition from small on- burden of the engine to the middle. In the domestic carburetors apply system with pneumatic braking fuel consisting of fuel and air nozzles the diffuser is of constant cross section. As the opening of the throttle increases the speed airflow and increasing the vacuum on the end of the sprayer. The amount of fuel flowing through the fuel putt, ler will increase. However, the enrichment of the mixture prevents the flow of air through the air nozzle, reducing the discharge from the fuel nozzle. As a result of those using the sprayer in the mixing chamber of the carburetor is not gasoline, and the emulsion (a mixture of gasoline with non- lots of air) and in the range of mode idle to full load the fuel mixture will not- need depleted composition. The idle system is designed to ha- tion of the combustible mixture at low speed of the crankshaft engine. Due to the fact that the throttle valve is honor is closed, the negative pressure at the nozzle is so small, The main metering system with pneumatic tormore- of fuel the fuel from the main metering system to do not will. At idle the cylinders remains great the amount of exhaust gas in relation to postupala- th charge of the combustible mixture. Such a working mixture is burning honey- Lenno, therefore, for stable operation of the engine it is necessary Dimo enrich fuel. This is achieved by inlet top Liwa behind the throttle, in the region of higher time- disguising. |
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