Home > News > Fuel injection nozzle for better engine performance
Fuel injection nozzle for better engine performance - 2012-11-21 22:38:02
To complete this process, the carburetor is set to mix the correct amount of air as the exciting gas engine runs smoothly. If there is not enough fuel mixed with the air, the engine "runs lean" and either will not run or will possibly damage the engine. Having too much fuel mixed with the air makes the engine "runs rich" and: unimplemented (during floods) runs very smoky, poorly run (pure stand down peatlands) or up Even fuel will be lost. Mixture carburetors will make the correct amount.
Fuel injection nozzle are still found in small engines and in older or specialized automobiles such as those designed for stock car racing. However, fuel injector which was first introduced in the late 1950s and first successfully marketed in the early 1970s, became almost universal site offers improved energy efficiency and reduce emissions. But almost all older cars and other equipment such as lawnmowers and chainsaws small carburetors used because of its simplicity and low cost compared to fuel injection.
Running idle or when it is cold, the engine is being supplied by the carburetor, with a small amount of very rich fuel mixture. As the throttle plate is closed and air from the air filter is not limited by the suction plate shock closed circuit engine idling, is being enlarged nozzle. The vacuum draws fuel through thick float bowl spray nozzle, whose fuel line shut-backed float needle valve. More fuel is being supplied to the gas pedal for low acceleration. Touch the throttle plate opening and plate shock to send air rushing through the barrel. Link can also decrease the pump trigger, by offering additional gasoline nozzle circuit quickening. As air passes through the narrow barrel center, called "venturi" vacuum circuit occurs that draws the spray nozzle cruise. Float level drops and causes the needle valve and float bowl on top to open the fuel line.
When a liquid or air passes through the venturi, flow velocity increases restrictions. Therefore, the air pressure is low, creating a growing "vacuum" or decrease in ambient pressure. This will allow fuel to be drawn into the barrel. This venturi is used to maintain the correct air fuel across the range of engine speeds and loads.
Fuel in the carburetor float circuit maintains certain level, even in the toughest conditions. It supports fuel level. When forcing the closure lever attached needle valve, fuel flow from the delivery valve is stopped. Needle valve opens and fuel flows into the bowl again. In this way, the fuel will open the main discharge nozzle. The float level should be determined with high precision. If the level is too low, it will not be enough fuel will be provided in the system and turns the engine block. If the level is too high, too much fuel will flow from the nozzle.