Delta Current Control

<body> <p align="left"><font face="Times New Roman">Delta Current Control varies the speed of the fan in order to keep engine temperatures constant. This is particularly useful on modern OBDII systems, as the controller can be set just above the cold-mode algorithm of the computer, negating the need to reprogram the system in order to attain a lower operating temperature. The controller is completely transparent, requiring no other modifications.</font></p> <p><font face="Times New Roman">During continuous high-speed operation, a clutched fan works fine. The transition time, however, is incredibly slow in that it is dependent on the cooling of the fairly large mass of a clutch assembly. In other words, the clutch will eventually disengage as engine speed increases, but don’t expect this to happen before the end of a quarter mile run.</font></p> <p align="left"><font face="Times New Roman">An electric fan is most efficient, a typical application drawing less than one horsepower. Indirect losses, however, can result byway of poor fan control. For every 30° C change in air temperature at the intake valve, a 10 % reduction is realized (ideal gas law) in volumetric efficiency. Other controllers cycle the cooling fan over a wide temperature cycle, varying both engine and compartment temperature, causing both lowered and inconsistent performance.</font></p> <p align="left"> </p> <p>This page uses frames, but your browser doesn't support them.</p> <p> </p> </body>