Patent ID: 6748162
Filing Date: 2004-06-08
Classification: F01P,F04D,Y02B

Abstract:
A ventilation assembly for a motor vehicle, the assembly comprising first and second electrically-powered motor fan units (1, 2), each having a respective maximum operating power (PM1, PM2), and a control device (5) adapted to vary the ventilation power (P1+2) developed by the assembly formed by the two motor fan units (1, 2) according to a desired total ventilation power value (PTC), the control device (5) comprising an electric power variator (7) with continuous power variation, connected to the first motor fan unit (1), and a means (9) for cutting-off the electric power supply of the second motor fan unit (2), wherein the ventilation power (P2) developed by the said second motor fan unit (2) is either zero or equal to its maximum operating power (PM2).