A vehicle includes: an engine; auxiliary equipment that is driven by the engine; a display device; and a control device. The control device includes: an engine control unit that controls the engine in such a manner that an actual idle speed of the engine in an idle state becomes a target idle speed that changes with a load of the auxiliary equipment on the engine; an acquisition unit that acquires the actual idle speed; a change determination unit that determines whether an accelerator operation amount is zero and the target idle speed is changing; a calculation unit that calculates a slowly changing idle speed obtained by smoothing the actual idle speed with a predetermined degree of smoothing when a determination of the change determination unit is affirmative; and a display control unit that displays the slowly changing idle speed on the display device.

A vehicle includes: an engine; auxiliary equipment that is driven by the engine; a display device; and a control device. The control device includes: an engine control unit that controls the engine in such a manner that an actual idle speed of the engine in an idle state becomes a target idle speed that changes with a load of the auxiliary equipment on the engine; an acquisition unit that acquires the actual idle speed; a change determination unit that determines whether an accelerator operation amount is zero and the target idle speed is changing; a calculation unit that calculates a slowly changing idle speed obtained by smoothing the actual idle speed with a predetermined degree of smoothing when a determination of the change determination unit is affirmative; and a display control unit that displays the slowly changing idle speed on the display device.

A fluid supply device for improving combustion efficiency is provided. The fluid supply device includes a controller and a fluid supply unit coupled to the controller. The fluid supply unit includes an outer housing and a container body having a resonance material, wherein the container body is configured in the outer housing and has a containing space for accommodating a target liquid, and the resonance material is configured adjacent to the target liquid. The resonance material has an infrared ray wavelength to rearrange molecules of the target liquid in the container body to small molecules to increase the combustion efficiency of an internal/external combustion machine, and the controller can adjust the supply volume of the target liquid according to a predefined rule based on an obtained information from the fluid supply unit and/or the internal/external combustion machines, so that the internal/external combustion machine can achieve the best combustion efficiency.

A fluid supply device for improving combustion efficiency is provided. The fluid supply device includes a controller and a fluid supply unit coupled to the controller. The fluid supply unit includes an outer housing and a container body having a resonance material, wherein the container body is configured in the outer housing and has a containing space for accommodating a target liquid, and the resonance material is configured adjacent to the target liquid. The resonance material has an infrared ray wavelength to rearrange molecules of the target liquid in the container body to small molecules to increase the combustion efficiency of an internal/external combustion machine, and the controller can adjust the supply volume of the target liquid according to a predefined rule based on an obtained information from the fluid supply unit and/or the internal/external combustion machines, so that the internal/external combustion machine can achieve the best combustion efficiency.

A vehicle includes: an engine; auxiliary equipment that is driven by the engine; a display device; and a control device. The control device includes: an engine control unit that controls the engine in such a manner that an actual idle speed of the engine in an idle state becomes a target idle speed that changes with a load of the auxiliary equipment on the engine; an acquisition unit that acquires the actual idle speed; a change determination unit that determines whether an accelerator operation amount is zero and the target idle speed is changing; a calculation unit that calculates a slowly changing idle speed obtained by smoothing the actual idle speed with a predetermined degree of smoothing when a determination of the change determination unit is affirmative; and a display control unit that displays the slowly changing idle speed on the display device.

A vehicle includes: an engine; auxiliary equipment that is driven by the engine; a display device; and a control device. The control device includes: an engine control unit that controls the engine in such a manner that an actual idle speed of the engine in an idle state becomes a target idle speed that changes with a load of the auxiliary equipment on the engine; an acquisition unit that acquires the actual idle speed; a change determination unit that determines whether an accelerator operation amount is zero and the target idle speed is changing; a calculation unit that calculates a slowly changing idle speed obtained by smoothing the actual idle speed with a predetermined degree of smoothing when a determination of the change determination unit is affirmative; and a display control unit that displays the slowly changing idle speed on the display device.