Device for measuring fuel consumption of main engine of ship in unit distance and implementation method thereof

The invention discloses a device for measuring the fuel consumption of a main engine of a ship in unit distance and an implementation method thereof. The device comprises a unit time fuel consumption measurement unit, a rotation speed sensor, a ship unit distance main engine fuel consumption measurement main unit and a ship speed measurement unit, wherein the unit time fuel consumption measurement unit is used for measuring the fuel consumption of the main engine in unit time; the rotation speed sensor is installed on the main engine of the ship and used for measuring the rotation speed of the main engine; and the ship speed measurement unit is directly connected with the ship unit distance main engine fuel consumption measurement main unit to transmit a ship speed signal to the ship unit distance main engine fuel consumption measurement main unit, and the ship unit distance main engine fuel consumption measurement main unit calculates and displays the fuel consumption of the main engine of the ship in unit distance. The invention provides timely and visual fuel-saving reference for ship navigation, and provides support for effectively realizing management of shipping enterprises in ship operation, energy conservation, cost reduction and emission reduction, thereby having favorable value of generalization and wide application range.