Methods and systems are provided for a cooling assembly for a vehicle. In one example, the cooling assembly may be a non-rectangular cooler positioned in a front end of the vehicle with an entry duct continuous with the non-rectangular cooler and arranged upstream of the non-rectangular cooler and an exit duct also continuous with the non-rectangular cooler and arranged downstream of the non-rectangular cooler.

An apparatus for irradiating air flow in a vehicle includes a filter unit configured to couple to a recirculating-air conduit connected to a manifold of an air circulation system, the filter unit having an inlet end, and a filter disposed in the inlet end of the filter unit, including an outer High Efficiency Particulate Air (HEPA) media. The apparatus further includes a plurality of ultraviolet light transmissive strands that each have distal ends disposed in a spaced apart manner in an interface region between the outer HEPA media filter and an inner activated carbon filter or HEPA filter, and proximal ends connectable to an ultraviolet light emitting source such that ultraviolet light is transmitted by the transmissive strands into the interface region. The transmissive strands are configured to receive emitted ultraviolet light that is substantially between 222 nm and 265 nm for irradiating air passing through the filter.

Methods and systems are provided for a cooling assembly for a vehicle. In one example, the cooling assembly may be a non-rectangular cooler positioned in a front end of the vehicle with an entry duct continuous with the non-rectangular cooler and arranged upstream of the non-rectangular cooler and an exit duct also continuous with the non-rectangular cooler and arranged downstream of the non-rectangular cooler.

A filter device for a filter system of a motor vehicle includes a filter element which is securable to a filter module. A filter element securing structure is disposed on the filter element where the filter element securing stricture interacts with a respective securing structure disposed on the filter module to form a bayonet closure. The filter element securing structure is an arc-shaped guide groove in a base of the filter element, where the arc-shaped guide groove has an insertion opening at a first end and a latching contour at a second end. The respective securing structure disposed on the filter module is a head pin that is receivable in the arc-shaped groove, An edge region of the arc-shaped guide groove slopes from the insertion opening to the latching contour.

A filter device for a filter system of a motor vehicle includes a filter element which is securable to a filter module. A filter element securing structure is disposed on the filter element where the filter element securing stricture interacts with a respective securing structure disposed on the filter module to form a bayonet closure. The filter element securing structure is an arc-shaped guide groove in a base of the filter element, where the arc-shaped guide groove has an insertion opening at a first end and a latching contour at a second end. The respective securing structure disposed on the filter module is a head pin that is receivable in the arc-shaped groove, An edge region of the arc-shaped guide groove slopes from the insertion opening to the latching contour.

An apparatus for irradiating air flow in a vehicle includes a filter unit configured to couple to a recirculating-air conduit connected to a manifold of an air circulation system, the filter unit having an inlet end, and a filter disposed in the inlet end of the filter unit, including an outer High Efficiency Particulate Air (HEPA) media. The apparatus further includes a plurality of ultraviolet light transmissive strands that each have distal ends disposed in a spaced apart manner in an interface region between the outer HEPA media filter and an inner activated carbon filter or HEPA filter, and proximal ends connectable to an ultraviolet light emitting source such that ultraviolet light is transmitted by the transmissive strands into the interface region. The transmissive strands are configured to receive emitted ultraviolet light that is substantially between 222 nm and 265 nm for irradiating air passing through the filter.