Enclosure e.g. gear box case, sealing control device for vehicle, has suction system maintaining enclosure at threshold pressure, and flowmeter that measures quantity of air aspirated per time unit for calculating leakage flow

摘要

The device has a suction system (5) e.g. vacuum pump, placed between a regulator (4) and a compressed air source (7), for maintaining an enclosure (1) at a threshold pressure. A solenoid valve (6) is provided for suction. The suction is performed, when the valve is open, such that an internal pressure of the enclosure is identical to the threshold pressure. A pressure sensor measures the enclosure`s internal pressure. A flowmeter (3) measures the quantity of air aspirated per time unit during the regulation of the pressure by the regulator, for calculating a leakage rate. An independent claim is also included for a method for controlling sealing of a housing implementing an enclosure sealing control device.