How is the variable displacement of the new Honda Accord 8th generation engine converted?

1, Accord's six-cylinder engine has cylinder closing function. Under different working conditions, ECU controls the fuel injectors of the relevant cylinders to stop fuel injection, so that the number of working cylinders is switched between three, four and six, and the change of working cylinder number means the change of engine displacement.

2. Usually, in order to obtain high power, it is necessary to increase the displacement of the engine. For example, 8-cylinder and 12-cylinder engines are very powerful. But the price paid is the increase in fuel consumption. Especially when idling and other working conditions do not require high power output, fuel will be wasted, and variable displacement can solve the contradiction well.

Variable displacement, as the name implies, is that the displacement of the engine is not fixed (that is, the number of cylinders participating in work is changing), but can be changed according to the needs of working conditions. How does the engine change its displacement? Simply put, it is to open or close a cylinder by controlling the intake valve and oil circuit. For example, a 6-cylinder variable displacement engine can realize three working modes of 3-cylinder, 4-cylinder and 6-cylinder according to actual working conditions, thus reducing fuel consumption and improving fuel economy.