Apparatus for controlling the cooling system of a motor-vehicle drive

摘要

A motor-vehicle drive engine has a cooling system to which it is connected via a transmission so that it can drive its own cooling system. A controller responsive to various parameters of the engine, particularly load power requirements, operates the cooling-system transmission through a cutout circuit so as to disconnect the cooling system from the engine when the engine temperature is below a predetermined level so that the full engine output power can be applied to a load. Thus the engine loading, engine output speed, engine heat, accelerator-pedal setting, and/or similar parameters are detected and fed to the controller which automatically cuts the cooling system off for a predetermined fixed interval (controlled by a timer) whenever it is possible for the engine to operate for this interval without the cooling system and the work produced by the engine is otherwise needed. A temperature sensor may reconnect the engine and the fan when the engine temperature rises impermissibly.