Patent attributes
The invention relates to an engine cooling system monitoring system. There is a need for a cooling system monitoring system for an engine system wherein the coolant is maintained at a precise temperature. Thus, a cooling system monitoring system is provided for an engine system having internal combustion engine, a fan driven by a variable speed fan drive, and a radiator for cooling coolant circulating through the engine. The monitoring system includes a fan speed sensor generating a fan speed signal, a control unit and a display device controlled by the control unit. The control unit generates a cooling system status signal as a function of the fan speed signal and a maximum fan speed value. The display device has visible position range associated with a normal engine operating temperature, and has an indicator movable within said position range in response to the cooling system status signal to indicate a status of the engine cooling system.
