Is the EFI car taxiing in neutral or in gear to save fuel?

Fuel-saving of EFI car sliding with gear. Regardless of safety or fuel economy, you should choose to slide with gears. The following is the principle of EFI vehicle and carburetor engine. You'll understand when you read it.

Which way is more fuel efficient, neutral taxiing or gear taxiing? At present, there are still a large number of carburetor models in driving vehicles, but due to the different working principles of carburetor engine and EFI engine, carburetor engine is more fuel-efficient when taxiing in neutral, while EFI engine is more fuel-efficient when taxiing in gear.

Extended data:

EFI vehicle refers to a vehicle equipped with an electronically controlled fuel injection system. Is the abbreviation of "electronically controlled gasoline injection engine"; Gasoline injection is to spray gasoline into the intake manifold, air inlet or cylinder in a mist at low pressure (260~350kPa), and then mix with air to form a combustible mixture.

Since 1999, all the cars produced in China are EFI cars.

The difference between EFI engine and carburetor engine

There are great differences between EFI engine and carburetor engine, and their operation methods are also very different.

EFI vehicle refers to a vehicle equipped with an electronically controlled fuel injection system.

The electronically controlled fuel injection system is controlled by the micro-integrated circuit according to various working conditions of the automobile and the engine, which promotes the complete combustion of the fuel in the engine, thus greatly reducing the exhaust pollution. Generally speaking, compared with carburetor truck, EFI truck has the advantages of high power, fuel saving, low noise and high primary ignition rate. Therefore, EFI car is the first choice for economy, practicality and environmental protection.

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. Because the EFI engine has the functions of cold start and enrichment, automatic cold start and fast idle, the engine can be started smoothly whether it is cold or hot. Before and during the engine start-up, it is ineffective to repeatedly and quickly step on the accelerator pedal to increase the fuel injection amount like starting a carburetor engine.

Because the accelerator pedal only controls the throttle opening, the fuel injection quantity of EFI engine is completely determined by the computer according to the intake parameters. When the fuel tank is short of oil, the EFI engine should not run for a long time. Because the electric gasoline pump is cooled by the fuel flowing through the gasoline pump. Running the engine for a long time without oil in the fuel tank will cause the electric gasoline pump to burn out due to overheating, so if your car is an EFI car, you should refuel as soon as possible with the fuel warning light on the dashboard. Do not unplug any sensor plug when the engine is running, otherwise there will be artificial fault codes in the computer, which will affect the correct judgment and troubleshooting of maintenance personnel.

References:

Baidu encyclopedia-EFI automobile