Patent ID: 7984700

Claim:
A control valve of a cooling circuit of a motor vehicle combustion engine, the circuit being traversed by a cooling fluid and comprising a first branch ( 70 ) which contains an engine cooling radiator ( 72 ) for cooling the engine ( 62 ), a second branch ( 76 ) which constitutes a bypass of the engine cooling radiator ( 72 ), and one or more third branches ( 78 ), each of which contains at least one unit heater ( 80 ) for heating a motor vehicle cabin, wherein the valve ( 10 ) comprises a body having a fluid inlet ( 28 ), a first outlet ( 18 ) connected to the second branch ( 76 ), a second outlet ( 20 ) connected to the first branch ( 70 ) and at least one third outlet ( 22 ) connected to the third branch or branches ( 78 ), as well as an adjustment member ( 34 ) mounted rotatably in the valve body so as to selectively control the outlets ( 18 , 20 , 22 ), and wherein the adjustment member ( 34 ) takes the following positions occurring in a sequence when rotated in a given direction: a “bypass” position (P 1 ), at which the first outlet ( 18 ) is open, followed in the sequence by; a “radiator+bypass” position (P 2 ; P 3 ), at which the first outlet ( 18 ) and the second outlet ( 20 ) are open, followed in the sequence by; a “radiator” position (P 9 ; P 10 ′), at which the second outlet ( 20 ) is open, followed in the sequence by; a “radiator+unit heater” position (P 4 ; P 10 ), at which the second outlet ( 20 ) and the third outlet ( 22 ) are open, followed in the sequence by; a “radiator+bypass+unit heater” position (P 6 ; P 7 ), at which the first outlet ( 18 ), the second outlet ( 20 ) and the third outlet ( 22 ) are open, followed in the sequence by; a “unit heater+bypass” position (P 5 ), at which the first outlet ( 18 ) and the third outlet ( 22 ) are open, and followed in the sequence by; a “unit beater” position (P 5 ′; P 8 ), at which the third outlet ( 22 ) is open.