Abstract: A combustion air intake apparatus for a truck, tractor, or bus vehicle for highway use includes an air deflecting element that is selectively deployable to cause dynamic air pressure created by vehicle motion to increase static air, pressure within the intake apparatus under appropriate conditions. Deployment or retraction of the air deflecting element is responsive to at least one of forward speed of the vehicle, air pressure downstream of an air inlet opening, or throttle position, and may further be responsive to detection of precipitation and/or particulate material. An air deflecting element may include a moveable plate or flap, moveable louvers, or a moveable duct.

Abstract: A combustion air intake apparatus for a truck, tractor, or bus vehicle for highway use includes an air deflecting element that is selectively deployable to cause dynamic air pressure created by vehicle motion to increase static air, pressure within the intake apparatus under appropriate conditions. Deployment or retraction of the air deflecting element is responsive to at least one of forward speed of the vehicle, air pressure downstream of an air inlet opening, or throttle position, and may further be responsive to detection of precipitation and/or particulate material. An air deflecting element may include a moveable plate or flap, moveable louvers, or a moveable duct.

Abstract: An aerodynamic device is arranged for mounting to a vehicle or a trailer for reducing its wind resistance. The aerodynamic device includes at least one sheet material arranged to be mounted to the vehicle/trailer and associated with a corresponding wall portion of the vehicle/trailer. Each wall portion has an outer surface and an inner surface and extends towards the rear of the vehicle/trailer. In a deployed first state, each sheet material is arranged to at least partly extend beyond a rearmost position of the wall portion. In a stored second state, each sheet material is arranged to be inserted such that is faces towards the inner surface. A vehicle or a trailer including the aerodynamic device is also provided.

Abstract: An aerodynamic device is arranged for mounting to a vehicle or a trailer for reducing its wind resistance. The aerodynamic device includes at least one sheet material arranged to be mounted to the vehicle/trailer and associated with a corresponding wall portion of the vehicle/trailer. Each wall portion has an outer surface and an inner surface and extends towards the rear of the vehicle/trailer. In a deployed first state, each sheet material is arranged to at least partly extend beyond a rearmost position of the wall portion. In a stored second state, each sheet material is arranged to be inserted such that is faces towards the inner surface. A vehicle or a trailer including the aerodynamic device is also provided.

Abstract: An aerodynamic device for reducing the wind resistance of a vehicle or a trailer is provided. The aerodynamic device is intended to be mounted to a vehicle structure at or close to the rear end of a vehicle. The device includes a flexible sheet material arranged to the vehicle or trailer such that it is hanging along the vehicle structure when it is in a resting position and arranged to extend beyond the rear end of the vehicle or trailer when deployed. The flexible sheet material includes an inner side and an outer side. The flexible sheet material is attached to the vehicle structure such that it deploys as a result of the coanda effect inducing a lower pressure on the outer side than on the inner side of the flexible sheet material when the vehicle or trailer is moving. The flexible sheet material is further attached to the vehicle structure by at least one restrictor such that the restrictor by the restriction shapes the flexible sheet material in its deployed state to a desired shape.

Abstract: A tractor cabin includes a frame with an upper cabin portion, a front cabin portion, a rear cabin portion and side cabin portions and at least one fairing connected to the frame. The at least one fairing includes at least one air deflector. The deflector is adjustable in its tilt angle with respect to the frame. The deflector includes a deflector body with a variable deflection along a longitudinal elongation of the deflector body. An air deflector is also provided.

Abstract: A tractor cabin includes a frame with an upper cabin portion, a front cabin portion, a rear cabin portion and side cabin portions and at least one fairing connected to the frame. The at least one fairing includes at least one air deflector. The deflector is adjustable in its tilt angle with respect to the frame. The deflector includes a deflector body with a variable deflection along a longitudinal elongation of the deflector body. An air deflector is also provided.