Patent ID: 7946812

Claim:
An air blower for cooling an internal-combustion engine of a motor vehicle being tested on a roller-type test rig, including an air blower fan configured to blow air toward an air inlet opening of the vehicle to direct an air stream toward engine cooling components, comprising: a nozzle mounted between an outlet opening of the air blower fan and the air inlet opening of the vehicle, the nozzle having a cross section at right angles to the air stream that decreases progressively between the outlet opening of the fan and the air inlet opening of the vehicle; and two straps, wherein a first end of each of the two straps is configured to be fixed to the vehicle and a second end of each of the two straps is configured to be fixed to a fixed vertical wall positioned near the outlet opening of the fan, wherein the nozzle comprises two side walls, each having an opening for passage of one of the two straps, and wherein, on each of the two side walls of the nozzle, the opening includes a series of parallel vertical slots, each slot having a width configured for passage of one of the two straps.