What is the difference between a carburetor car and an EFI car?

One, the working principle is different

1, carburetor car: in the engine work under the action of the vacuum, a certain proportion of gasoline mixed with air.

2, EFI cars: the use of injectors at low pressure (260~350kPa) will be sprayed into the intake manifold, intake tract or cylinder gasoline in mist, and then mixed with air to form a combustible mixture.

Second, the composition is different

1, carburetor car: by the upper and lower parts of the three components, the upper part of the intake and float chamber, the middle part of the throat, the amount of holes and nozzle, and the lower part of the throttle and so on.

2, EFI car: consists of electric fuel pump, fuel filter, oil pressure regulator, injector and so on.

Three, the operation method is different

1, carburetor cars: carburetor cars need to step on the gas.

2, EFI cars: no need to step on the gas. Because the EFI engines have a cold start thickening, automatic cold car fast idle function, can ensure that the engine whether in cold or hot car state smooth start.

Baidu Encyclopedia - Electric Injection Vehicles

Baidu Encyclopedia - Carburetor