Device for controlling the ventilating means of an internal combustion engine
AssigneeAciers et Outillage Peugeot
InventorJean Barge
Life of this patent
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Abstract
The device comprises a temperature sensor placed in contact with a heat-carrying fluid circulating in the engine and a control device responsive to the sensor for the purpose of supplying power to the motor or motors driving the ventilator or ventilators in accordance with variations in the temperature of the heat-carrying fluid. The temperature sensor comprises a component which is sensitive to a continuous range of temperatures and this component is connected, as an input element, to a continuous regulating loop regulating the power supplied to the motor or motors. This loop comprises a threshold circuit which determines the lower value of the temperature range.
Claims18
A device for controlling ventilating means of a radiator of an internal combustion engine comprising a temperature sensor placed in contact with a heat-carrying fluid circulating in said engine and control means responsive to said sensor for supplying power to motor means drivingly connected to the ventilating means as a function of variations in the temperature of the heat-carrying fluid, said temperature sensor comprising a component including a thermistor sensitive to a continuous range of temperatures and a continuous regulating loop for regulating the power supplied to said motor means, said temperature sensitive component being connected, as an input element, to said loop, and said loop comprising a threshold circuit determining a lower value of said temperature range, and an operational amplifier which is arranged as a comparator and has an input connected to said temperature sensitive component, said operational amplifier being moreover provided with a negative feedback circuit having a negative feedback level which is defined by a fixed reference voltage which determines a threshold beyond which said loop effects the temperature regulation.
A ventilating unit for an internal combustion engine, said unit comprising fan means, motor means drivingly connected to said fan means, and a device for controlling operation of said motor means and comprising a temperature sensor placed in contact with a heat-carrying fluid circulating in said engine and control means responsive to said sensor for supplying power to said motor means as a function of variations in the temperature of the heat-carrying fluid, said temperature sensor comprising a component sensitive to a continuous range of temperatures and a continuous regulating loop for regulating the power supplied to said motor means, said temperature sensitive component being connected, as an input element, to said loop, and said loop comprising a threshold circuit determining a lower value of said temperature range, and wherein said motor means have a case and said control device is mounted on a printed circuit board disposed in said case.
Dependencies are inferred from the claim text.