Patent ID: 7156115

Claim:
A flow control system, comprising: a first fluid flowing at a first fluid flow rate; a flow control valve through which a second fluid flows, the flow control valve having a coil and a spool, such that an electric current flowing through the coil generates an electromagnetic force on the spool; a temperature sensor operable to sense a temperature of the second fluid; a control system coupled to the temperature sensor and the coil, the control system operable to determine a desired flow rate of the second fluid based on the first fluid flow rate; a flow sensor coupled to the control system, the control system operable to determine a measured flow rate of the second fluid based on the flow sensor, the control system further operable to compare the measured flow rate of the second fluid to an expected flow rate of the second fluid and to establish a scaling factor based on the comparison of the measured and expected flow rates of the second fluid, such that the control system is operable to adjust the electromagnetic force on the spool based on the temperature of the second fluid and on the scaling factor to substantially achieve the desired flow rate of the second fluid.