Patent ID: 8757110

Claim:
A coolant circuit of an internal combustion engine, comprising: a primary cooling circuit having a first branch leading from the internal combustion engine, and a second branch leading to the internal combustion engine; a main radiator disposed in the first branch; a rotary actuator; and a coolant delivery pump disposed on the rotary actuator and having an outlet fluidly connectable to the internal combustion engine via the second branch, said rotary actuator including: a rotary-slide housing, a first rotary slide having at least one rotary-slide pass-through opening and being supported in the rotary-slide housing for rotation to allow at least partial coincidence of the at least one rotary-slide pass-through opening with a main radiator port of the rotary-slide housing to thereby control a flow of coolant through the first branch from the internal combustion engine via the main radiator to the at least one rotary-slide pass-through opening of the first rotary valve; and a second rotary slide having at least one rotary-slide pass-through opening and being supported in the rotary-slide housing for rotation to allow at least partial coincidence with a further port of the rotary-slide housing to thereby control a flow of coolant through to the second branch from the outlet of the coolant delivery pump to the internal combustion engine.