Which is more expensive, slamming on the accelerator or driving at a constant speed?

There is no doubt that slamming on the accelerator is more expensive than driving at a constant speed.

Why do you think so?

Now domestic cars use EFI engines, and some luxury cars use direct injection engines. The accelerator pedal does not control the fuel injection quantity, but the electronic signal that controls the air intake quantity, that is, the opening of the accelerator.

When we lightly step on the accelerator, the throttle opening is narrow, the air intake of the engine is small, the negative pressure of the intake manifold is large, and the air intake is small. On the contrary, when we step on the accelerator again, the throttle opening increases, the engine intake increases, the intake manifold negative pressure is low, and the engine is easy to inhale. The intake manifold and throttle have sensors and flowmeters. When we step on the accelerator pedal, these signal data will be transmitted to the automobile computer, and the automobile computer will calculate the fuel injection quantity of the engine according to the actual air intake, so as to achieve the purpose of refueling the automobile.

So:

When the driver slams on the accelerator pedal, the throttle opening increases, the intake air volume increases, and the intake air flow increases. The sensors on the intake manifold and the throttle transmit data to the automobile computer, and the automobile computer calculates the driver's acceleration desire. At this time, the automobile computer will control the increase of fuel injection to meet the driver's acceleration purpose. Since it is to increase fuel consumption, it will definitely increase fuel consumption.

If the driver steps on the accelerator at a uniform speed, the vehicle speed is kept in a very reasonable range, the accelerator is kept open, and the on-board computer does not receive the signal that the driver wants to speed up, then the on-board computer will reduce the fuel intake and keep the car at a uniform speed, thus reducing the fuel consumption of the car.

When the engine is running at a constant speed, the fuel consumption is the lowest. A car slamming on the accelerator must be particularly fuel-intensive. It also belongs to the scope of violent driving. Everyone should try to reduce the process of slamming on the accelerator in daily driving, save fuel consumption and reduce the wear and tear of automobile engines.