Device for regulating the cooling of a motor-vehicle internal-combustion engine in a hot-starting state
AssigneeValeo Thermique Moteur
InventorsNgy Srun Ap, Mathieu Chanfreau, Arnaud Maire
Life of this patent
Estimating the term…
Abstract
A cooling circuit for a vehicle engine, traveled by fluid under pump action, comprises a cooling branch with a radiator associated with a motor-driven fan unit, and a heating branch containing an air heater. A first device establishes a hot-starting state of the engine as a function of chosen conditions; and a second device, active in this hot-starting state, controls the speed of the pump and the speed of the motor-driven fan unit under chosen conditions, as a function of a first magnitude representative of the temperature of the fluid and of a second magnitude representative of the heating demand.
Claims11
A device for regulating the cooling of a motor-vehicle internal-combustion engine comprising a cooling circuit carrying a fluid driven by a pump, said circuit comprising a cooling branch containing a cooling radiator associated with a motor-driven fan unit, as well as a heating branch containing an air heater, wherein the pump and motor-driven fan unit are each actuated by a variable-speed electric motor, and which comprises:
- first means for establishing a hot-starting state of the engine as a function of chosen conditions;
- and
- second means, active in said hot-starting state, for controlling the speed of the pump and the speed of the motor-driven fan unit as a function of a first magnitude representative of the temperature of the fluid and of a second magnitude representative of the heating demand,
- wherein said second means further controls the speed of the pump and the motor-driven fan unit based on speed of the engine and load on the engine.
Dependencies are inferred from the claim text.