Grille for a vehicle, in particular a commercial vehicle as well as a vehicle

1. A vehicle, comprising:

an engine hood, wherein the engine hood defines a primary cooling air inlet on a leading surface of the engine hood;

at least one heat exchanger, wherein the at least one heat exchanger has a front surface against which air is flowable due to a forward movement of the vehicle and wherein the front surface extends in a plane extending diagonally to a longitudinal direction of the vehicle; and

a grille with a plurality of grille bars, wherein the plurality of grille bars are disposed at a distance from one another, wherein a respective portion of each of the plurality of grille bars is airfoil-shaped, wherein the grille is installed onto the engine hood at the leading surface and functions as an integral part of the primary cooling air inlet and is disposed in front of the at least one heat exchanger, wherein, in a closed position, the plurality of grille bars create a continuous surface with the engine hood, and wherein, in an open position, the plurality of grille bars guide the air such that the air flows substantially perpendicularly to the plane extending diagonally to the longitudinal direction of the vehicle.

2. The vehicle according to claim 1 , wherein the plurality of grille bars are configured to guide the air such that a flow of the air is homogenously distributed on the at least one heat exchanger.

3. The vehicle according to claim 1 , wherein at least one of the plurality of grille bars is pivotable about a pivot axis such that an angle between the longitudinal direction of the vehicle and the at least one of the plurality of grille bars is adjustable.

4. The vehicle according to claim 1 , wherein the plurality of grille bars are disposed on top of each other in relation to a vertical direction of the vehicle.

5. The vehicle according to claim 1 , wherein the plurality of grille bars are pivotable in a graduated manner.