What's the difference between EFI and carburetor?

The biggest difference between carburetor truck and EFI truck is that the oil supply mode has changed from "suction" to "spray". Compared with the traditional carburetor car, the electronic fuel injection system replaces the carburetor with a fuel injection device. The so-called electronic fuel injection system is to measure the amount of air inhaled into the engine through microelectronics technology, and then supply the engine with appropriate amount of fuel through high-pressure injection. The computer control process of controlling the mixture ratio of air and fuel is called electronic fuel injection system. This technology can increase the engine power by 10% and the torque by more than 20% under the same fuel consumption. Fuel consumption decreased10-12%; Tail gas emission can be reduced by 30%-50%.

The carburetor truck relies on the negative pressure generated when the air flows through the carburetor waiting tube to suck the gasoline in the float chamber to the throat and form a combustible mixture with the gas mist. Its disadvantage is that if the gas path is blocked, it will produce incomplete combustion, increase fuel consumption and cause serious exhaust pollution. China has long banned the manufacture and sale of carburetor cars.

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EFI vehicle: It measures the amount of air inhaled into the engine, and then supplies an appropriate amount of gasoline to the engine through high-pressure injection. The computer-controlled process of controlling the mixture ratio of air and gasoline is called electronically controlled fuel injection. There are great differences between EFI engine and carburetor engine, and their operation methods are also very different. When EFI engine starts (including cold start), it is generally unnecessary to step on the accelerator. And the carburetor car should have a little throttle when it starts.

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Carburetor truck: The carburetor relies on the negative pressure generated when the air flows through the waiting tube of the carburetor to suck the gasoline in the float chamber to the throat and atomize it into a combustible mixture with the airflow.